Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 1 | /* |
Ingo Molnar | 57c0c15 | 2009-09-21 12:20:38 +0200 | [diff] [blame] | 2 | * Performance events: |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 3 | * |
Ingo Molnar | a308444 | 2009-06-11 14:44:26 +0200 | [diff] [blame] | 4 | * Copyright (C) 2008-2009, Thomas Gleixner <tglx@linutronix.de> |
Ingo Molnar | e7e7ee2 | 2011-05-04 08:42:29 +0200 | [diff] [blame] | 5 | * Copyright (C) 2008-2011, Red Hat, Inc., Ingo Molnar |
| 6 | * Copyright (C) 2008-2011, Red Hat, Inc., Peter Zijlstra |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 7 | * |
Ingo Molnar | 57c0c15 | 2009-09-21 12:20:38 +0200 | [diff] [blame] | 8 | * Data type definitions, declarations, prototypes. |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 9 | * |
Ingo Molnar | a308444 | 2009-06-11 14:44:26 +0200 | [diff] [blame] | 10 | * Started by: Thomas Gleixner and Ingo Molnar |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 11 | * |
Ingo Molnar | 57c0c15 | 2009-09-21 12:20:38 +0200 | [diff] [blame] | 12 | * For licencing details see kernel-base/COPYING |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 13 | */ |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 14 | #ifndef _LINUX_PERF_EVENT_H |
| 15 | #define _LINUX_PERF_EVENT_H |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 16 | |
Paul Mackerras | f3dfd26 | 2009-02-26 22:43:46 +1100 | [diff] [blame] | 17 | #include <linux/types.h> |
| 18 | #include <linux/ioctl.h> |
Paul Mackerras | 9aaa131 | 2009-03-21 15:31:47 +1100 | [diff] [blame] | 19 | #include <asm/byteorder.h> |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 20 | |
| 21 | /* |
Ingo Molnar | 9f66a38 | 2008-12-10 12:33:23 +0100 | [diff] [blame] | 22 | * User-space ABI bits: |
| 23 | */ |
| 24 | |
| 25 | /* |
Peter Zijlstra | 0d48696 | 2009-06-02 19:22:16 +0200 | [diff] [blame] | 26 | * attr.type |
Peter Zijlstra | b8e8351 | 2009-03-19 20:26:18 +0100 | [diff] [blame] | 27 | */ |
Peter Zijlstra | 1c432d8 | 2009-06-11 13:19:29 +0200 | [diff] [blame] | 28 | enum perf_type_id { |
Ingo Molnar | a308444 | 2009-06-11 14:44:26 +0200 | [diff] [blame] | 29 | PERF_TYPE_HARDWARE = 0, |
| 30 | PERF_TYPE_SOFTWARE = 1, |
| 31 | PERF_TYPE_TRACEPOINT = 2, |
| 32 | PERF_TYPE_HW_CACHE = 3, |
| 33 | PERF_TYPE_RAW = 4, |
Frederic Weisbecker | 24f1e32c | 2009-09-09 19:22:48 +0200 | [diff] [blame] | 34 | PERF_TYPE_BREAKPOINT = 5, |
Peter Zijlstra | b8e8351 | 2009-03-19 20:26:18 +0100 | [diff] [blame] | 35 | |
Ingo Molnar | a308444 | 2009-06-11 14:44:26 +0200 | [diff] [blame] | 36 | PERF_TYPE_MAX, /* non-ABI */ |
Peter Zijlstra | b8e8351 | 2009-03-19 20:26:18 +0100 | [diff] [blame] | 37 | }; |
| 38 | |
| 39 | /* |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 40 | * Generalized performance event event_id types, used by the |
| 41 | * attr.event_id parameter of the sys_perf_event_open() |
Ingo Molnar | a308444 | 2009-06-11 14:44:26 +0200 | [diff] [blame] | 42 | * syscall: |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 43 | */ |
Peter Zijlstra | 1c432d8 | 2009-06-11 13:19:29 +0200 | [diff] [blame] | 44 | enum perf_hw_id { |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 45 | /* |
Ingo Molnar | 9f66a38 | 2008-12-10 12:33:23 +0100 | [diff] [blame] | 46 | * Common hardware events, generalized by the kernel: |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 47 | */ |
Peter Zijlstra | f4dbfa8 | 2009-06-11 14:06:28 +0200 | [diff] [blame] | 48 | PERF_COUNT_HW_CPU_CYCLES = 0, |
| 49 | PERF_COUNT_HW_INSTRUCTIONS = 1, |
| 50 | PERF_COUNT_HW_CACHE_REFERENCES = 2, |
| 51 | PERF_COUNT_HW_CACHE_MISSES = 3, |
| 52 | PERF_COUNT_HW_BRANCH_INSTRUCTIONS = 4, |
| 53 | PERF_COUNT_HW_BRANCH_MISSES = 5, |
| 54 | PERF_COUNT_HW_BUS_CYCLES = 6, |
Ingo Molnar | 8f62242 | 2011-04-29 13:19:47 +0200 | [diff] [blame] | 55 | PERF_COUNT_HW_STALLED_CYCLES_FRONTEND = 7, |
| 56 | PERF_COUNT_HW_STALLED_CYCLES_BACKEND = 8, |
Stephane Eranian | c37e174 | 2011-12-11 00:28:52 +0100 | [diff] [blame^] | 57 | PERF_COUNT_HW_REF_CPU_CYCLES = 9, |
Ingo Molnar | 9f66a38 | 2008-12-10 12:33:23 +0100 | [diff] [blame] | 58 | |
Ingo Molnar | a308444 | 2009-06-11 14:44:26 +0200 | [diff] [blame] | 59 | PERF_COUNT_HW_MAX, /* non-ABI */ |
Peter Zijlstra | b8e8351 | 2009-03-19 20:26:18 +0100 | [diff] [blame] | 60 | }; |
Ingo Molnar | 6c594c2 | 2008-12-14 12:34:15 +0100 | [diff] [blame] | 61 | |
Peter Zijlstra | b8e8351 | 2009-03-19 20:26:18 +0100 | [diff] [blame] | 62 | /* |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 63 | * Generalized hardware cache events: |
Ingo Molnar | 8326f44 | 2009-06-05 20:22:46 +0200 | [diff] [blame] | 64 | * |
Peter Zijlstra | 89d6c0b | 2011-04-22 23:37:06 +0200 | [diff] [blame] | 65 | * { L1-D, L1-I, LLC, ITLB, DTLB, BPU, NODE } x |
Ingo Molnar | 8326f44 | 2009-06-05 20:22:46 +0200 | [diff] [blame] | 66 | * { read, write, prefetch } x |
| 67 | * { accesses, misses } |
| 68 | */ |
Peter Zijlstra | 1c432d8 | 2009-06-11 13:19:29 +0200 | [diff] [blame] | 69 | enum perf_hw_cache_id { |
Ingo Molnar | a308444 | 2009-06-11 14:44:26 +0200 | [diff] [blame] | 70 | PERF_COUNT_HW_CACHE_L1D = 0, |
| 71 | PERF_COUNT_HW_CACHE_L1I = 1, |
| 72 | PERF_COUNT_HW_CACHE_LL = 2, |
| 73 | PERF_COUNT_HW_CACHE_DTLB = 3, |
| 74 | PERF_COUNT_HW_CACHE_ITLB = 4, |
| 75 | PERF_COUNT_HW_CACHE_BPU = 5, |
Peter Zijlstra | 89d6c0b | 2011-04-22 23:37:06 +0200 | [diff] [blame] | 76 | PERF_COUNT_HW_CACHE_NODE = 6, |
Ingo Molnar | 8326f44 | 2009-06-05 20:22:46 +0200 | [diff] [blame] | 77 | |
Ingo Molnar | a308444 | 2009-06-11 14:44:26 +0200 | [diff] [blame] | 78 | PERF_COUNT_HW_CACHE_MAX, /* non-ABI */ |
Ingo Molnar | 8326f44 | 2009-06-05 20:22:46 +0200 | [diff] [blame] | 79 | }; |
| 80 | |
Peter Zijlstra | 1c432d8 | 2009-06-11 13:19:29 +0200 | [diff] [blame] | 81 | enum perf_hw_cache_op_id { |
Ingo Molnar | a308444 | 2009-06-11 14:44:26 +0200 | [diff] [blame] | 82 | PERF_COUNT_HW_CACHE_OP_READ = 0, |
| 83 | PERF_COUNT_HW_CACHE_OP_WRITE = 1, |
| 84 | PERF_COUNT_HW_CACHE_OP_PREFETCH = 2, |
Ingo Molnar | 8326f44 | 2009-06-05 20:22:46 +0200 | [diff] [blame] | 85 | |
Ingo Molnar | a308444 | 2009-06-11 14:44:26 +0200 | [diff] [blame] | 86 | PERF_COUNT_HW_CACHE_OP_MAX, /* non-ABI */ |
Ingo Molnar | 8326f44 | 2009-06-05 20:22:46 +0200 | [diff] [blame] | 87 | }; |
| 88 | |
Peter Zijlstra | 1c432d8 | 2009-06-11 13:19:29 +0200 | [diff] [blame] | 89 | enum perf_hw_cache_op_result_id { |
| 90 | PERF_COUNT_HW_CACHE_RESULT_ACCESS = 0, |
| 91 | PERF_COUNT_HW_CACHE_RESULT_MISS = 1, |
Ingo Molnar | 8326f44 | 2009-06-05 20:22:46 +0200 | [diff] [blame] | 92 | |
Ingo Molnar | a308444 | 2009-06-11 14:44:26 +0200 | [diff] [blame] | 93 | PERF_COUNT_HW_CACHE_RESULT_MAX, /* non-ABI */ |
Ingo Molnar | 8326f44 | 2009-06-05 20:22:46 +0200 | [diff] [blame] | 94 | }; |
| 95 | |
| 96 | /* |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 97 | * Special "software" events provided by the kernel, even if the hardware |
| 98 | * does not support performance events. These events measure various |
Peter Zijlstra | b8e8351 | 2009-03-19 20:26:18 +0100 | [diff] [blame] | 99 | * physical and sw events of the kernel (and allow the profiling of them as |
| 100 | * well): |
| 101 | */ |
Peter Zijlstra | 1c432d8 | 2009-06-11 13:19:29 +0200 | [diff] [blame] | 102 | enum perf_sw_ids { |
Ingo Molnar | a308444 | 2009-06-11 14:44:26 +0200 | [diff] [blame] | 103 | PERF_COUNT_SW_CPU_CLOCK = 0, |
| 104 | PERF_COUNT_SW_TASK_CLOCK = 1, |
| 105 | PERF_COUNT_SW_PAGE_FAULTS = 2, |
| 106 | PERF_COUNT_SW_CONTEXT_SWITCHES = 3, |
| 107 | PERF_COUNT_SW_CPU_MIGRATIONS = 4, |
| 108 | PERF_COUNT_SW_PAGE_FAULTS_MIN = 5, |
| 109 | PERF_COUNT_SW_PAGE_FAULTS_MAJ = 6, |
Anton Blanchard | f7d7986 | 2009-10-18 01:09:29 +0000 | [diff] [blame] | 110 | PERF_COUNT_SW_ALIGNMENT_FAULTS = 7, |
| 111 | PERF_COUNT_SW_EMULATION_FAULTS = 8, |
Ingo Molnar | 6c594c2 | 2008-12-14 12:34:15 +0100 | [diff] [blame] | 112 | |
Ingo Molnar | a308444 | 2009-06-11 14:44:26 +0200 | [diff] [blame] | 113 | PERF_COUNT_SW_MAX, /* non-ABI */ |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 114 | }; |
| 115 | |
Ingo Molnar | 9f66a38 | 2008-12-10 12:33:23 +0100 | [diff] [blame] | 116 | /* |
Peter Zijlstra | 0d48696 | 2009-06-02 19:22:16 +0200 | [diff] [blame] | 117 | * Bits that can be set in attr.sample_type to request information |
Peter Zijlstra | 8a057d8 | 2009-04-02 11:11:59 +0200 | [diff] [blame] | 118 | * in the overflow packets. |
| 119 | */ |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 120 | enum perf_event_sample_format { |
Ingo Molnar | a308444 | 2009-06-11 14:44:26 +0200 | [diff] [blame] | 121 | PERF_SAMPLE_IP = 1U << 0, |
| 122 | PERF_SAMPLE_TID = 1U << 1, |
| 123 | PERF_SAMPLE_TIME = 1U << 2, |
| 124 | PERF_SAMPLE_ADDR = 1U << 3, |
Peter Zijlstra | 3dab77f | 2009-08-13 11:47:53 +0200 | [diff] [blame] | 125 | PERF_SAMPLE_READ = 1U << 4, |
Ingo Molnar | a308444 | 2009-06-11 14:44:26 +0200 | [diff] [blame] | 126 | PERF_SAMPLE_CALLCHAIN = 1U << 5, |
| 127 | PERF_SAMPLE_ID = 1U << 6, |
| 128 | PERF_SAMPLE_CPU = 1U << 7, |
| 129 | PERF_SAMPLE_PERIOD = 1U << 8, |
Peter Zijlstra | 7f453c2 | 2009-07-21 13:19:40 +0200 | [diff] [blame] | 130 | PERF_SAMPLE_STREAM_ID = 1U << 9, |
Frederic Weisbecker | 3a43ce6 | 2009-08-08 04:26:37 +0200 | [diff] [blame] | 131 | PERF_SAMPLE_RAW = 1U << 10, |
Peter Zijlstra | 974802e | 2009-06-12 12:46:55 +0200 | [diff] [blame] | 132 | |
Frederic Weisbecker | f413cdb | 2009-08-07 01:25:54 +0200 | [diff] [blame] | 133 | PERF_SAMPLE_MAX = 1U << 11, /* non-ABI */ |
Peter Zijlstra | 8a057d8 | 2009-04-02 11:11:59 +0200 | [diff] [blame] | 134 | }; |
| 135 | |
| 136 | /* |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 137 | * The format of the data returned by read() on a perf event fd, |
Peter Zijlstra | 3dab77f | 2009-08-13 11:47:53 +0200 | [diff] [blame] | 138 | * as specified by attr.read_format: |
| 139 | * |
| 140 | * struct read_format { |
Ingo Molnar | 57c0c15 | 2009-09-21 12:20:38 +0200 | [diff] [blame] | 141 | * { u64 value; |
Vince Weaver | d7ebe75 | 2011-06-03 17:59:51 -0400 | [diff] [blame] | 142 | * { u64 time_enabled; } && PERF_FORMAT_TOTAL_TIME_ENABLED |
| 143 | * { u64 time_running; } && PERF_FORMAT_TOTAL_TIME_RUNNING |
Ingo Molnar | 57c0c15 | 2009-09-21 12:20:38 +0200 | [diff] [blame] | 144 | * { u64 id; } && PERF_FORMAT_ID |
| 145 | * } && !PERF_FORMAT_GROUP |
Peter Zijlstra | 3dab77f | 2009-08-13 11:47:53 +0200 | [diff] [blame] | 146 | * |
Ingo Molnar | 57c0c15 | 2009-09-21 12:20:38 +0200 | [diff] [blame] | 147 | * { u64 nr; |
Vince Weaver | d7ebe75 | 2011-06-03 17:59:51 -0400 | [diff] [blame] | 148 | * { u64 time_enabled; } && PERF_FORMAT_TOTAL_TIME_ENABLED |
| 149 | * { u64 time_running; } && PERF_FORMAT_TOTAL_TIME_RUNNING |
Ingo Molnar | 57c0c15 | 2009-09-21 12:20:38 +0200 | [diff] [blame] | 150 | * { u64 value; |
| 151 | * { u64 id; } && PERF_FORMAT_ID |
| 152 | * } cntr[nr]; |
| 153 | * } && PERF_FORMAT_GROUP |
Peter Zijlstra | 3dab77f | 2009-08-13 11:47:53 +0200 | [diff] [blame] | 154 | * }; |
Paul Mackerras | 53cfbf5 | 2009-03-25 22:46:58 +1100 | [diff] [blame] | 155 | */ |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 156 | enum perf_event_read_format { |
Ingo Molnar | a308444 | 2009-06-11 14:44:26 +0200 | [diff] [blame] | 157 | PERF_FORMAT_TOTAL_TIME_ENABLED = 1U << 0, |
| 158 | PERF_FORMAT_TOTAL_TIME_RUNNING = 1U << 1, |
| 159 | PERF_FORMAT_ID = 1U << 2, |
Peter Zijlstra | 3dab77f | 2009-08-13 11:47:53 +0200 | [diff] [blame] | 160 | PERF_FORMAT_GROUP = 1U << 3, |
Peter Zijlstra | 974802e | 2009-06-12 12:46:55 +0200 | [diff] [blame] | 161 | |
Ingo Molnar | 57c0c15 | 2009-09-21 12:20:38 +0200 | [diff] [blame] | 162 | PERF_FORMAT_MAX = 1U << 4, /* non-ABI */ |
Paul Mackerras | 53cfbf5 | 2009-03-25 22:46:58 +1100 | [diff] [blame] | 163 | }; |
| 164 | |
Peter Zijlstra | 974802e | 2009-06-12 12:46:55 +0200 | [diff] [blame] | 165 | #define PERF_ATTR_SIZE_VER0 64 /* sizeof first published struct */ |
| 166 | |
Paul Mackerras | 53cfbf5 | 2009-03-25 22:46:58 +1100 | [diff] [blame] | 167 | /* |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 168 | * Hardware event_id to monitor via a performance monitoring event: |
Ingo Molnar | 9f66a38 | 2008-12-10 12:33:23 +0100 | [diff] [blame] | 169 | */ |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 170 | struct perf_event_attr { |
Peter Zijlstra | 974802e | 2009-06-12 12:46:55 +0200 | [diff] [blame] | 171 | |
Peter Zijlstra | f4a2deb4 | 2009-03-23 18:22:06 +0100 | [diff] [blame] | 172 | /* |
Ingo Molnar | a21ca2c | 2009-06-06 09:58:57 +0200 | [diff] [blame] | 173 | * Major type: hardware/software/tracepoint/etc. |
| 174 | */ |
| 175 | __u32 type; |
Peter Zijlstra | 974802e | 2009-06-12 12:46:55 +0200 | [diff] [blame] | 176 | |
| 177 | /* |
| 178 | * Size of the attr structure, for fwd/bwd compat. |
| 179 | */ |
| 180 | __u32 size; |
Ingo Molnar | a21ca2c | 2009-06-06 09:58:57 +0200 | [diff] [blame] | 181 | |
| 182 | /* |
| 183 | * Type specific configuration information. |
Peter Zijlstra | f4a2deb4 | 2009-03-23 18:22:06 +0100 | [diff] [blame] | 184 | */ |
| 185 | __u64 config; |
Ingo Molnar | 9f66a38 | 2008-12-10 12:33:23 +0100 | [diff] [blame] | 186 | |
Peter Zijlstra | 60db5e0 | 2009-05-15 15:19:28 +0200 | [diff] [blame] | 187 | union { |
Peter Zijlstra | b23f332 | 2009-06-02 15:13:03 +0200 | [diff] [blame] | 188 | __u64 sample_period; |
| 189 | __u64 sample_freq; |
Peter Zijlstra | 60db5e0 | 2009-05-15 15:19:28 +0200 | [diff] [blame] | 190 | }; |
| 191 | |
Peter Zijlstra | b23f332 | 2009-06-02 15:13:03 +0200 | [diff] [blame] | 192 | __u64 sample_type; |
| 193 | __u64 read_format; |
Ingo Molnar | 9f66a38 | 2008-12-10 12:33:23 +0100 | [diff] [blame] | 194 | |
Paul Mackerras | 2743a5b | 2009-03-04 20:36:51 +1100 | [diff] [blame] | 195 | __u64 disabled : 1, /* off by default */ |
Paul Mackerras | 0475f9e | 2009-02-11 14:35:35 +1100 | [diff] [blame] | 196 | inherit : 1, /* children inherit it */ |
| 197 | pinned : 1, /* must always be on PMU */ |
| 198 | exclusive : 1, /* only group on PMU */ |
| 199 | exclude_user : 1, /* don't count user */ |
| 200 | exclude_kernel : 1, /* ditto kernel */ |
| 201 | exclude_hv : 1, /* ditto hypervisor */ |
Paul Mackerras | 2743a5b | 2009-03-04 20:36:51 +1100 | [diff] [blame] | 202 | exclude_idle : 1, /* don't count when idle */ |
Peter Zijlstra | 0a4a939 | 2009-03-30 19:07:05 +0200 | [diff] [blame] | 203 | mmap : 1, /* include mmap data */ |
Peter Zijlstra | 8d1b2d9 | 2009-04-08 15:01:30 +0200 | [diff] [blame] | 204 | comm : 1, /* include comm data */ |
Peter Zijlstra | 60db5e0 | 2009-05-15 15:19:28 +0200 | [diff] [blame] | 205 | freq : 1, /* use freq, not period */ |
Peter Zijlstra | bfbd338 | 2009-06-24 21:11:59 +0200 | [diff] [blame] | 206 | inherit_stat : 1, /* per task counts */ |
Paul Mackerras | 57e7986 | 2009-06-30 16:07:19 +1000 | [diff] [blame] | 207 | enable_on_exec : 1, /* next exec enables */ |
Peter Zijlstra | 9f498cc | 2009-07-23 14:46:33 +0200 | [diff] [blame] | 208 | task : 1, /* trace fork/exit */ |
Peter Zijlstra | 2667de8 | 2009-09-17 19:01:10 +0200 | [diff] [blame] | 209 | watermark : 1, /* wakeup_watermark */ |
Peter Zijlstra | ab60834 | 2010-04-08 23:03:20 +0200 | [diff] [blame] | 210 | /* |
| 211 | * precise_ip: |
| 212 | * |
| 213 | * 0 - SAMPLE_IP can have arbitrary skid |
| 214 | * 1 - SAMPLE_IP must have constant skid |
| 215 | * 2 - SAMPLE_IP requested to have 0 skid |
| 216 | * 3 - SAMPLE_IP must have 0 skid |
| 217 | * |
| 218 | * See also PERF_RECORD_MISC_EXACT_IP |
| 219 | */ |
| 220 | precise_ip : 2, /* skid constraint */ |
Eric B Munson | 3af9e85 | 2010-05-18 15:30:49 +0100 | [diff] [blame] | 221 | mmap_data : 1, /* non-exec mmap data */ |
Arnaldo Carvalho de Melo | c980d10 | 2010-12-04 23:02:20 -0200 | [diff] [blame] | 222 | sample_id_all : 1, /* sample_type all events */ |
Paul Mackerras | 3b6f9e5 | 2009-01-14 21:00:30 +1100 | [diff] [blame] | 223 | |
Joerg Roedel | a240f76 | 2011-10-05 14:01:16 +0200 | [diff] [blame] | 224 | exclude_host : 1, /* don't count in host */ |
| 225 | exclude_guest : 1, /* don't count in guest */ |
| 226 | |
| 227 | __reserved_1 : 43; |
Paul Mackerras | 2743a5b | 2009-03-04 20:36:51 +1100 | [diff] [blame] | 228 | |
Peter Zijlstra | 2667de8 | 2009-09-17 19:01:10 +0200 | [diff] [blame] | 229 | union { |
| 230 | __u32 wakeup_events; /* wakeup every n events */ |
| 231 | __u32 wakeup_watermark; /* bytes before wakeup */ |
| 232 | }; |
Frederic Weisbecker | 24f1e32c | 2009-09-09 19:22:48 +0200 | [diff] [blame] | 233 | |
Peter Zijlstra | f13c12c | 2009-12-15 19:43:11 +0100 | [diff] [blame] | 234 | __u32 bp_type; |
Andi Kleen | a7e3ed1 | 2011-03-03 10:34:47 +0800 | [diff] [blame] | 235 | union { |
| 236 | __u64 bp_addr; |
| 237 | __u64 config1; /* extension of config */ |
| 238 | }; |
| 239 | union { |
| 240 | __u64 bp_len; |
| 241 | __u64 config2; /* extension of config1 */ |
| 242 | }; |
Thomas Gleixner | eab656a | 2008-12-08 19:26:59 +0100 | [diff] [blame] | 243 | }; |
| 244 | |
Ingo Molnar | 9f66a38 | 2008-12-10 12:33:23 +0100 | [diff] [blame] | 245 | /* |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 246 | * Ioctls that can be done on a perf event fd: |
Paul Mackerras | d859e29 | 2009-01-17 18:10:22 +1100 | [diff] [blame] | 247 | */ |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 248 | #define PERF_EVENT_IOC_ENABLE _IO ('$', 0) |
Ingo Molnar | 57c0c15 | 2009-09-21 12:20:38 +0200 | [diff] [blame] | 249 | #define PERF_EVENT_IOC_DISABLE _IO ('$', 1) |
| 250 | #define PERF_EVENT_IOC_REFRESH _IO ('$', 2) |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 251 | #define PERF_EVENT_IOC_RESET _IO ('$', 3) |
Arjan van de Ven | 4c49b12 | 2009-11-13 21:47:33 -0800 | [diff] [blame] | 252 | #define PERF_EVENT_IOC_PERIOD _IOW('$', 4, __u64) |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 253 | #define PERF_EVENT_IOC_SET_OUTPUT _IO ('$', 5) |
Li Zefan | 6fb2915 | 2009-10-15 11:21:42 +0800 | [diff] [blame] | 254 | #define PERF_EVENT_IOC_SET_FILTER _IOW('$', 6, char *) |
Peter Zijlstra | 3df5eda | 2009-05-08 18:52:22 +0200 | [diff] [blame] | 255 | |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 256 | enum perf_event_ioc_flags { |
Peter Zijlstra | 3df5eda | 2009-05-08 18:52:22 +0200 | [diff] [blame] | 257 | PERF_IOC_FLAG_GROUP = 1U << 0, |
| 258 | }; |
Paul Mackerras | d859e29 | 2009-01-17 18:10:22 +1100 | [diff] [blame] | 259 | |
Paul Mackerras | 37d8182 | 2009-03-23 18:22:08 +0100 | [diff] [blame] | 260 | /* |
| 261 | * Structure of the page that can be mapped via mmap |
| 262 | */ |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 263 | struct perf_event_mmap_page { |
Paul Mackerras | 37d8182 | 2009-03-23 18:22:08 +0100 | [diff] [blame] | 264 | __u32 version; /* version number of this structure */ |
| 265 | __u32 compat_version; /* lowest version this is compat with */ |
Peter Zijlstra | 38ff667 | 2009-03-30 19:07:03 +0200 | [diff] [blame] | 266 | |
| 267 | /* |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 268 | * Bits needed to read the hw events in user-space. |
Peter Zijlstra | 38ff667 | 2009-03-30 19:07:03 +0200 | [diff] [blame] | 269 | * |
Peter Zijlstra | 92f22a3 | 2009-04-02 11:12:04 +0200 | [diff] [blame] | 270 | * u32 seq; |
| 271 | * s64 count; |
Peter Zijlstra | 38ff667 | 2009-03-30 19:07:03 +0200 | [diff] [blame] | 272 | * |
Peter Zijlstra | a2e87d0 | 2009-04-06 11:44:59 +0200 | [diff] [blame] | 273 | * do { |
| 274 | * seq = pc->lock; |
Peter Zijlstra | 38ff667 | 2009-03-30 19:07:03 +0200 | [diff] [blame] | 275 | * |
Peter Zijlstra | a2e87d0 | 2009-04-06 11:44:59 +0200 | [diff] [blame] | 276 | * barrier() |
| 277 | * if (pc->index) { |
| 278 | * count = pmc_read(pc->index - 1); |
| 279 | * count += pc->offset; |
| 280 | * } else |
| 281 | * goto regular_read; |
Peter Zijlstra | 38ff667 | 2009-03-30 19:07:03 +0200 | [diff] [blame] | 282 | * |
Peter Zijlstra | a2e87d0 | 2009-04-06 11:44:59 +0200 | [diff] [blame] | 283 | * barrier(); |
| 284 | * } while (pc->lock != seq); |
Peter Zijlstra | 38ff667 | 2009-03-30 19:07:03 +0200 | [diff] [blame] | 285 | * |
Peter Zijlstra | 92f22a3 | 2009-04-02 11:12:04 +0200 | [diff] [blame] | 286 | * NOTE: for obvious reason this only works on self-monitoring |
| 287 | * processes. |
Peter Zijlstra | 38ff667 | 2009-03-30 19:07:03 +0200 | [diff] [blame] | 288 | */ |
Paul Mackerras | 37d8182 | 2009-03-23 18:22:08 +0100 | [diff] [blame] | 289 | __u32 lock; /* seqlock for synchronization */ |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 290 | __u32 index; /* hardware event identifier */ |
| 291 | __s64 offset; /* add to hardware event value */ |
| 292 | __u64 time_enabled; /* time event active */ |
| 293 | __u64 time_running; /* time event on cpu */ |
Peter Zijlstra | 7b732a7 | 2009-03-23 18:22:10 +0100 | [diff] [blame] | 294 | |
Peter Zijlstra | 41f9533 | 2009-06-23 17:55:18 +0200 | [diff] [blame] | 295 | /* |
| 296 | * Hole for extension of the self monitor capabilities |
| 297 | */ |
| 298 | |
Peter Zijlstra | 7f8b4e4 | 2009-06-22 14:34:35 +0200 | [diff] [blame] | 299 | __u64 __reserved[123]; /* align to 1k */ |
Peter Zijlstra | 41f9533 | 2009-06-23 17:55:18 +0200 | [diff] [blame] | 300 | |
Peter Zijlstra | 38ff667 | 2009-03-30 19:07:03 +0200 | [diff] [blame] | 301 | /* |
| 302 | * Control data for the mmap() data buffer. |
| 303 | * |
Peter Zijlstra | 43a21ea | 2009-03-25 19:39:37 +0100 | [diff] [blame] | 304 | * User-space reading the @data_head value should issue an rmb(), on |
| 305 | * SMP capable platforms, after reading this value -- see |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 306 | * perf_event_wakeup(). |
Peter Zijlstra | 43a21ea | 2009-03-25 19:39:37 +0100 | [diff] [blame] | 307 | * |
| 308 | * When the mapping is PROT_WRITE the @data_tail value should be |
| 309 | * written by userspace to reflect the last read data. In this case |
| 310 | * the kernel will not over-write unread data. |
Peter Zijlstra | 38ff667 | 2009-03-30 19:07:03 +0200 | [diff] [blame] | 311 | */ |
Peter Zijlstra | 8e3747c | 2009-06-02 16:16:02 +0200 | [diff] [blame] | 312 | __u64 data_head; /* head in the data section */ |
Peter Zijlstra | 43a21ea | 2009-03-25 19:39:37 +0100 | [diff] [blame] | 313 | __u64 data_tail; /* user-space written tail */ |
Paul Mackerras | 37d8182 | 2009-03-23 18:22:08 +0100 | [diff] [blame] | 314 | }; |
| 315 | |
Zhang, Yanmin | 39447b3 | 2010-04-19 13:32:41 +0800 | [diff] [blame] | 316 | #define PERF_RECORD_MISC_CPUMODE_MASK (7 << 0) |
Ingo Molnar | 184f412 | 2010-01-27 08:39:39 +0100 | [diff] [blame] | 317 | #define PERF_RECORD_MISC_CPUMODE_UNKNOWN (0 << 0) |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 318 | #define PERF_RECORD_MISC_KERNEL (1 << 0) |
| 319 | #define PERF_RECORD_MISC_USER (2 << 0) |
| 320 | #define PERF_RECORD_MISC_HYPERVISOR (3 << 0) |
Zhang, Yanmin | 39447b3 | 2010-04-19 13:32:41 +0800 | [diff] [blame] | 321 | #define PERF_RECORD_MISC_GUEST_KERNEL (4 << 0) |
| 322 | #define PERF_RECORD_MISC_GUEST_USER (5 << 0) |
Peter Zijlstra | 6fab019 | 2009-04-08 15:01:26 +0200 | [diff] [blame] | 323 | |
Peter Zijlstra | ab60834 | 2010-04-08 23:03:20 +0200 | [diff] [blame] | 324 | /* |
| 325 | * Indicates that the content of PERF_SAMPLE_IP points to |
| 326 | * the actual instruction that triggered the event. See also |
| 327 | * perf_event_attr::precise_ip. |
| 328 | */ |
| 329 | #define PERF_RECORD_MISC_EXACT_IP (1 << 14) |
Peter Zijlstra | ef21f68 | 2010-03-03 13:12:23 +0100 | [diff] [blame] | 330 | /* |
| 331 | * Reserve the last bit to indicate some extended misc field |
| 332 | */ |
| 333 | #define PERF_RECORD_MISC_EXT_RESERVED (1 << 15) |
| 334 | |
Peter Zijlstra | 5c14819 | 2009-03-25 12:30:23 +0100 | [diff] [blame] | 335 | struct perf_event_header { |
| 336 | __u32 type; |
Peter Zijlstra | 6fab019 | 2009-04-08 15:01:26 +0200 | [diff] [blame] | 337 | __u16 misc; |
| 338 | __u16 size; |
Peter Zijlstra | 5c14819 | 2009-03-25 12:30:23 +0100 | [diff] [blame] | 339 | }; |
| 340 | |
| 341 | enum perf_event_type { |
Peter Zijlstra | 5ed0041 | 2009-03-30 19:07:12 +0200 | [diff] [blame] | 342 | |
Peter Zijlstra | 0c593b3 | 2009-04-06 11:45:08 +0200 | [diff] [blame] | 343 | /* |
Arnaldo Carvalho de Melo | c980d10 | 2010-12-04 23:02:20 -0200 | [diff] [blame] | 344 | * If perf_event_attr.sample_id_all is set then all event types will |
| 345 | * have the sample_type selected fields related to where/when |
| 346 | * (identity) an event took place (TID, TIME, ID, CPU, STREAM_ID) |
| 347 | * described in PERF_RECORD_SAMPLE below, it will be stashed just after |
| 348 | * the perf_event_header and the fields already present for the existing |
| 349 | * fields, i.e. at the end of the payload. That way a newer perf.data |
| 350 | * file will be supported by older perf tools, with these new optional |
| 351 | * fields being ignored. |
| 352 | * |
Peter Zijlstra | 0c593b3 | 2009-04-06 11:45:08 +0200 | [diff] [blame] | 353 | * The MMAP events record the PROT_EXEC mappings so that we can |
| 354 | * correlate userspace IPs to code. They have the following structure: |
| 355 | * |
| 356 | * struct { |
Ingo Molnar | 0127c3e | 2009-05-25 22:03:26 +0200 | [diff] [blame] | 357 | * struct perf_event_header header; |
Peter Zijlstra | 0c593b3 | 2009-04-06 11:45:08 +0200 | [diff] [blame] | 358 | * |
Ingo Molnar | 0127c3e | 2009-05-25 22:03:26 +0200 | [diff] [blame] | 359 | * u32 pid, tid; |
| 360 | * u64 addr; |
| 361 | * u64 len; |
| 362 | * u64 pgoff; |
| 363 | * char filename[]; |
Peter Zijlstra | 0c593b3 | 2009-04-06 11:45:08 +0200 | [diff] [blame] | 364 | * }; |
| 365 | */ |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 366 | PERF_RECORD_MMAP = 1, |
Peter Zijlstra | ea5d20c | 2009-03-25 12:30:25 +0100 | [diff] [blame] | 367 | |
Peter Zijlstra | 8a057d8 | 2009-04-02 11:11:59 +0200 | [diff] [blame] | 368 | /* |
Peter Zijlstra | 8d1b2d9 | 2009-04-08 15:01:30 +0200 | [diff] [blame] | 369 | * struct { |
Ingo Molnar | 57c0c15 | 2009-09-21 12:20:38 +0200 | [diff] [blame] | 370 | * struct perf_event_header header; |
| 371 | * u64 id; |
| 372 | * u64 lost; |
Peter Zijlstra | 43a21ea | 2009-03-25 19:39:37 +0100 | [diff] [blame] | 373 | * }; |
| 374 | */ |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 375 | PERF_RECORD_LOST = 2, |
Peter Zijlstra | 43a21ea | 2009-03-25 19:39:37 +0100 | [diff] [blame] | 376 | |
| 377 | /* |
| 378 | * struct { |
Ingo Molnar | 0127c3e | 2009-05-25 22:03:26 +0200 | [diff] [blame] | 379 | * struct perf_event_header header; |
Peter Zijlstra | 8d1b2d9 | 2009-04-08 15:01:30 +0200 | [diff] [blame] | 380 | * |
Ingo Molnar | 0127c3e | 2009-05-25 22:03:26 +0200 | [diff] [blame] | 381 | * u32 pid, tid; |
| 382 | * char comm[]; |
Peter Zijlstra | 8d1b2d9 | 2009-04-08 15:01:30 +0200 | [diff] [blame] | 383 | * }; |
| 384 | */ |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 385 | PERF_RECORD_COMM = 3, |
Peter Zijlstra | 8d1b2d9 | 2009-04-08 15:01:30 +0200 | [diff] [blame] | 386 | |
| 387 | /* |
Peter Zijlstra | 26b119b | 2009-05-20 12:21:20 +0200 | [diff] [blame] | 388 | * struct { |
Ingo Molnar | 0127c3e | 2009-05-25 22:03:26 +0200 | [diff] [blame] | 389 | * struct perf_event_header header; |
Peter Zijlstra | 9f498cc | 2009-07-23 14:46:33 +0200 | [diff] [blame] | 390 | * u32 pid, ppid; |
| 391 | * u32 tid, ptid; |
Arjan van de Ven | 393b2ad | 2009-09-12 07:52:47 +0200 | [diff] [blame] | 392 | * u64 time; |
Peter Zijlstra | 9f498cc | 2009-07-23 14:46:33 +0200 | [diff] [blame] | 393 | * }; |
| 394 | */ |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 395 | PERF_RECORD_EXIT = 4, |
Peter Zijlstra | 9f498cc | 2009-07-23 14:46:33 +0200 | [diff] [blame] | 396 | |
| 397 | /* |
| 398 | * struct { |
| 399 | * struct perf_event_header header; |
Ingo Molnar | 0127c3e | 2009-05-25 22:03:26 +0200 | [diff] [blame] | 400 | * u64 time; |
Peter Zijlstra | 689802b | 2009-06-05 15:05:43 +0200 | [diff] [blame] | 401 | * u64 id; |
Peter Zijlstra | 7f453c2 | 2009-07-21 13:19:40 +0200 | [diff] [blame] | 402 | * u64 stream_id; |
Peter Zijlstra | a78ac32 | 2009-05-25 17:39:05 +0200 | [diff] [blame] | 403 | * }; |
| 404 | */ |
Ingo Molnar | 184f412 | 2010-01-27 08:39:39 +0100 | [diff] [blame] | 405 | PERF_RECORD_THROTTLE = 5, |
| 406 | PERF_RECORD_UNTHROTTLE = 6, |
Peter Zijlstra | a78ac32 | 2009-05-25 17:39:05 +0200 | [diff] [blame] | 407 | |
| 408 | /* |
Peter Zijlstra | 60313eb | 2009-06-04 16:53:44 +0200 | [diff] [blame] | 409 | * struct { |
Ingo Molnar | a21ca2c | 2009-06-06 09:58:57 +0200 | [diff] [blame] | 410 | * struct perf_event_header header; |
| 411 | * u32 pid, ppid; |
Peter Zijlstra | 9f498cc | 2009-07-23 14:46:33 +0200 | [diff] [blame] | 412 | * u32 tid, ptid; |
Anton Blanchard | a6f10a2 | 2009-09-22 22:34:24 +1000 | [diff] [blame] | 413 | * u64 time; |
Peter Zijlstra | 60313eb | 2009-06-04 16:53:44 +0200 | [diff] [blame] | 414 | * }; |
| 415 | */ |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 416 | PERF_RECORD_FORK = 7, |
Peter Zijlstra | 60313eb | 2009-06-04 16:53:44 +0200 | [diff] [blame] | 417 | |
| 418 | /* |
Peter Zijlstra | 38b200d | 2009-06-23 20:13:11 +0200 | [diff] [blame] | 419 | * struct { |
Ingo Molnar | 184f412 | 2010-01-27 08:39:39 +0100 | [diff] [blame] | 420 | * struct perf_event_header header; |
| 421 | * u32 pid, tid; |
Peter Zijlstra | 3dab77f | 2009-08-13 11:47:53 +0200 | [diff] [blame] | 422 | * |
Ingo Molnar | 184f412 | 2010-01-27 08:39:39 +0100 | [diff] [blame] | 423 | * struct read_format values; |
Peter Zijlstra | 38b200d | 2009-06-23 20:13:11 +0200 | [diff] [blame] | 424 | * }; |
| 425 | */ |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 426 | PERF_RECORD_READ = 8, |
Peter Zijlstra | 38b200d | 2009-06-23 20:13:11 +0200 | [diff] [blame] | 427 | |
| 428 | /* |
Peter Zijlstra | 0c593b3 | 2009-04-06 11:45:08 +0200 | [diff] [blame] | 429 | * struct { |
Ingo Molnar | 0127c3e | 2009-05-25 22:03:26 +0200 | [diff] [blame] | 430 | * struct perf_event_header header; |
Peter Zijlstra | 0c593b3 | 2009-04-06 11:45:08 +0200 | [diff] [blame] | 431 | * |
Peter Zijlstra | 43a21ea | 2009-03-25 19:39:37 +0100 | [diff] [blame] | 432 | * { u64 ip; } && PERF_SAMPLE_IP |
| 433 | * { u32 pid, tid; } && PERF_SAMPLE_TID |
| 434 | * { u64 time; } && PERF_SAMPLE_TIME |
| 435 | * { u64 addr; } && PERF_SAMPLE_ADDR |
Peter Zijlstra | e6e18ec | 2009-06-25 11:27:12 +0200 | [diff] [blame] | 436 | * { u64 id; } && PERF_SAMPLE_ID |
Peter Zijlstra | 7f453c2 | 2009-07-21 13:19:40 +0200 | [diff] [blame] | 437 | * { u64 stream_id;} && PERF_SAMPLE_STREAM_ID |
Peter Zijlstra | 43a21ea | 2009-03-25 19:39:37 +0100 | [diff] [blame] | 438 | * { u32 cpu, res; } && PERF_SAMPLE_CPU |
Ingo Molnar | 57c0c15 | 2009-09-21 12:20:38 +0200 | [diff] [blame] | 439 | * { u64 period; } && PERF_SAMPLE_PERIOD |
Peter Zijlstra | 0c593b3 | 2009-04-06 11:45:08 +0200 | [diff] [blame] | 440 | * |
Peter Zijlstra | 3dab77f | 2009-08-13 11:47:53 +0200 | [diff] [blame] | 441 | * { struct read_format values; } && PERF_SAMPLE_READ |
Peter Zijlstra | 0c593b3 | 2009-04-06 11:45:08 +0200 | [diff] [blame] | 442 | * |
Peter Zijlstra | f9188e0 | 2009-06-18 22:20:52 +0200 | [diff] [blame] | 443 | * { u64 nr, |
Peter Zijlstra | 43a21ea | 2009-03-25 19:39:37 +0100 | [diff] [blame] | 444 | * u64 ips[nr]; } && PERF_SAMPLE_CALLCHAIN |
Peter Zijlstra | 3dab77f | 2009-08-13 11:47:53 +0200 | [diff] [blame] | 445 | * |
Ingo Molnar | 57c0c15 | 2009-09-21 12:20:38 +0200 | [diff] [blame] | 446 | * # |
| 447 | * # The RAW record below is opaque data wrt the ABI |
| 448 | * # |
| 449 | * # That is, the ABI doesn't make any promises wrt to |
| 450 | * # the stability of its content, it may vary depending |
| 451 | * # on event, hardware, kernel version and phase of |
| 452 | * # the moon. |
| 453 | * # |
| 454 | * # In other words, PERF_SAMPLE_RAW contents are not an ABI. |
| 455 | * # |
Peter Zijlstra | 3dab77f | 2009-08-13 11:47:53 +0200 | [diff] [blame] | 456 | * |
Peter Zijlstra | a044560 | 2009-08-10 11:16:52 +0200 | [diff] [blame] | 457 | * { u32 size; |
| 458 | * char data[size];}&& PERF_SAMPLE_RAW |
Peter Zijlstra | 0c593b3 | 2009-04-06 11:45:08 +0200 | [diff] [blame] | 459 | * }; |
Peter Zijlstra | 8a057d8 | 2009-04-02 11:11:59 +0200 | [diff] [blame] | 460 | */ |
Ingo Molnar | 184f412 | 2010-01-27 08:39:39 +0100 | [diff] [blame] | 461 | PERF_RECORD_SAMPLE = 9, |
Peter Zijlstra | e6e18ec | 2009-06-25 11:27:12 +0200 | [diff] [blame] | 462 | |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 463 | PERF_RECORD_MAX, /* non-ABI */ |
Peter Zijlstra | 5c14819 | 2009-03-25 12:30:23 +0100 | [diff] [blame] | 464 | }; |
| 465 | |
Peter Zijlstra | f9188e0 | 2009-06-18 22:20:52 +0200 | [diff] [blame] | 466 | enum perf_callchain_context { |
| 467 | PERF_CONTEXT_HV = (__u64)-32, |
| 468 | PERF_CONTEXT_KERNEL = (__u64)-128, |
| 469 | PERF_CONTEXT_USER = (__u64)-512, |
Ingo Molnar | 7522060 | 2009-06-18 08:00:17 +0200 | [diff] [blame] | 470 | |
Peter Zijlstra | f9188e0 | 2009-06-18 22:20:52 +0200 | [diff] [blame] | 471 | PERF_CONTEXT_GUEST = (__u64)-2048, |
| 472 | PERF_CONTEXT_GUEST_KERNEL = (__u64)-2176, |
| 473 | PERF_CONTEXT_GUEST_USER = (__u64)-2560, |
| 474 | |
| 475 | PERF_CONTEXT_MAX = (__u64)-4095, |
Ingo Molnar | 7522060 | 2009-06-18 08:00:17 +0200 | [diff] [blame] | 476 | }; |
| 477 | |
Ingo Molnar | e7e7ee2 | 2011-05-04 08:42:29 +0200 | [diff] [blame] | 478 | #define PERF_FLAG_FD_NO_GROUP (1U << 0) |
| 479 | #define PERF_FLAG_FD_OUTPUT (1U << 1) |
| 480 | #define PERF_FLAG_PID_CGROUP (1U << 2) /* pid=cgroup id, per-cpu mode only */ |
Peter Zijlstra | a4be7c2 | 2009-08-19 11:18:27 +0200 | [diff] [blame] | 481 | |
Paul Mackerras | f3dfd26 | 2009-02-26 22:43:46 +1100 | [diff] [blame] | 482 | #ifdef __KERNEL__ |
Paul Mackerras | d859e29 | 2009-01-17 18:10:22 +1100 | [diff] [blame] | 483 | /* |
Paul Mackerras | f3dfd26 | 2009-02-26 22:43:46 +1100 | [diff] [blame] | 484 | * Kernel-internal data types and definitions: |
Ingo Molnar | 9f66a38 | 2008-12-10 12:33:23 +0100 | [diff] [blame] | 485 | */ |
| 486 | |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 487 | #ifdef CONFIG_PERF_EVENTS |
Stephane Eranian | e5d1367 | 2011-02-14 11:20:01 +0200 | [diff] [blame] | 488 | # include <linux/cgroup.h> |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 489 | # include <asm/perf_event.h> |
Peter Zijlstra | 7be7923 | 2010-06-09 11:57:23 +0200 | [diff] [blame] | 490 | # include <asm/local64.h> |
Paul Mackerras | f3dfd26 | 2009-02-26 22:43:46 +1100 | [diff] [blame] | 491 | #endif |
| 492 | |
Zhang, Yanmin | 39447b3 | 2010-04-19 13:32:41 +0800 | [diff] [blame] | 493 | struct perf_guest_info_callbacks { |
Ingo Molnar | e7e7ee2 | 2011-05-04 08:42:29 +0200 | [diff] [blame] | 494 | int (*is_in_guest)(void); |
| 495 | int (*is_user_mode)(void); |
| 496 | unsigned long (*get_guest_ip)(void); |
Zhang, Yanmin | 39447b3 | 2010-04-19 13:32:41 +0800 | [diff] [blame] | 497 | }; |
| 498 | |
Arnd Bergmann | 2ff6cfd | 2009-12-07 17:12:58 +0100 | [diff] [blame] | 499 | #ifdef CONFIG_HAVE_HW_BREAKPOINT |
| 500 | #include <asm/hw_breakpoint.h> |
| 501 | #endif |
| 502 | |
Paul Mackerras | f3dfd26 | 2009-02-26 22:43:46 +1100 | [diff] [blame] | 503 | #include <linux/list.h> |
| 504 | #include <linux/mutex.h> |
| 505 | #include <linux/rculist.h> |
| 506 | #include <linux/rcupdate.h> |
| 507 | #include <linux/spinlock.h> |
Peter Zijlstra | d6d020e | 2009-03-13 12:21:35 +0100 | [diff] [blame] | 508 | #include <linux/hrtimer.h> |
Peter Zijlstra | 3c446b3d | 2009-04-06 11:45:01 +0200 | [diff] [blame] | 509 | #include <linux/fs.h> |
Peter Zijlstra | 709e50c | 2009-06-02 14:13:15 +0200 | [diff] [blame] | 510 | #include <linux/pid_namespace.h> |
Peter Zijlstra | 906010b | 2009-09-21 16:08:49 +0200 | [diff] [blame] | 511 | #include <linux/workqueue.h> |
Frederic Weisbecker | 5331d7b | 2010-03-04 21:15:56 +0100 | [diff] [blame] | 512 | #include <linux/ftrace.h> |
Peter Zijlstra | 85cfabb | 2010-03-11 13:06:56 +0100 | [diff] [blame] | 513 | #include <linux/cpu.h> |
Peter Zijlstra | e360adb | 2010-10-14 14:01:34 +0800 | [diff] [blame] | 514 | #include <linux/irq_work.h> |
Jason Baron | d430d3d | 2011-03-16 17:29:47 -0400 | [diff] [blame] | 515 | #include <linux/jump_label.h> |
Arun Sharma | 60063497 | 2011-07-26 16:09:06 -0700 | [diff] [blame] | 516 | #include <linux/atomic.h> |
Peter Zijlstra | fa58815 | 2010-05-18 10:54:20 +0200 | [diff] [blame] | 517 | #include <asm/local.h> |
Paul Mackerras | f3dfd26 | 2009-02-26 22:43:46 +1100 | [diff] [blame] | 518 | |
Peter Zijlstra | f9188e0 | 2009-06-18 22:20:52 +0200 | [diff] [blame] | 519 | #define PERF_MAX_STACK_DEPTH 255 |
| 520 | |
| 521 | struct perf_callchain_entry { |
| 522 | __u64 nr; |
| 523 | __u64 ip[PERF_MAX_STACK_DEPTH]; |
| 524 | }; |
| 525 | |
Frederic Weisbecker | 3a43ce6 | 2009-08-08 04:26:37 +0200 | [diff] [blame] | 526 | struct perf_raw_record { |
| 527 | u32 size; |
| 528 | void *data; |
Frederic Weisbecker | f413cdb | 2009-08-07 01:25:54 +0200 | [diff] [blame] | 529 | }; |
| 530 | |
Peter Zijlstra | caff2be | 2010-03-03 12:02:30 +0100 | [diff] [blame] | 531 | struct perf_branch_entry { |
| 532 | __u64 from; |
| 533 | __u64 to; |
| 534 | __u64 flags; |
| 535 | }; |
| 536 | |
| 537 | struct perf_branch_stack { |
| 538 | __u64 nr; |
| 539 | struct perf_branch_entry entries[0]; |
| 540 | }; |
| 541 | |
Paul Mackerras | f3dfd26 | 2009-02-26 22:43:46 +1100 | [diff] [blame] | 542 | struct task_struct; |
| 543 | |
Stephane Eranian | efc9f05 | 2011-06-06 16:57:03 +0200 | [diff] [blame] | 544 | /* |
| 545 | * extra PMU register associated with an event |
| 546 | */ |
| 547 | struct hw_perf_event_extra { |
| 548 | u64 config; /* register value */ |
| 549 | unsigned int reg; /* register address or index */ |
| 550 | int alloc; /* extra register already allocated */ |
| 551 | int idx; /* index in shared_regs->regs[] */ |
| 552 | }; |
| 553 | |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 554 | /** |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 555 | * struct hw_perf_event - performance event hardware details: |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 556 | */ |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 557 | struct hw_perf_event { |
| 558 | #ifdef CONFIG_PERF_EVENTS |
Peter Zijlstra | d6d020e | 2009-03-13 12:21:35 +0100 | [diff] [blame] | 559 | union { |
| 560 | struct { /* hardware */ |
Ingo Molnar | a308444 | 2009-06-11 14:44:26 +0200 | [diff] [blame] | 561 | u64 config; |
Stephane Eranian | 447a194 | 2010-02-01 14:50:01 +0200 | [diff] [blame] | 562 | u64 last_tag; |
Ingo Molnar | a308444 | 2009-06-11 14:44:26 +0200 | [diff] [blame] | 563 | unsigned long config_base; |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 564 | unsigned long event_base; |
Ingo Molnar | a308444 | 2009-06-11 14:44:26 +0200 | [diff] [blame] | 565 | int idx; |
Stephane Eranian | 447a194 | 2010-02-01 14:50:01 +0200 | [diff] [blame] | 566 | int last_cpu; |
Stephane Eranian | efc9f05 | 2011-06-06 16:57:03 +0200 | [diff] [blame] | 567 | struct hw_perf_event_extra extra_reg; |
Peter Zijlstra | d6d020e | 2009-03-13 12:21:35 +0100 | [diff] [blame] | 568 | }; |
Soeren Sandmann | 721a669 | 2009-09-15 14:33:08 +0200 | [diff] [blame] | 569 | struct { /* software */ |
Ingo Molnar | a308444 | 2009-06-11 14:44:26 +0200 | [diff] [blame] | 570 | struct hrtimer hrtimer; |
Peter Zijlstra | d6d020e | 2009-03-13 12:21:35 +0100 | [diff] [blame] | 571 | }; |
Frederic Weisbecker | 24f1e32c | 2009-09-09 19:22:48 +0200 | [diff] [blame] | 572 | #ifdef CONFIG_HAVE_HW_BREAKPOINT |
Frederic Weisbecker | 45a7337 | 2010-06-23 23:00:37 +0200 | [diff] [blame] | 573 | struct { /* breakpoint */ |
| 574 | struct arch_hw_breakpoint info; |
| 575 | struct list_head bp_list; |
Peter Zijlstra | d580ff8 | 2010-10-14 17:43:23 +0200 | [diff] [blame] | 576 | /* |
| 577 | * Crufty hack to avoid the chicken and egg |
| 578 | * problem hw_breakpoint has with context |
| 579 | * creation and event initalization. |
| 580 | */ |
| 581 | struct task_struct *bp_target; |
Frederic Weisbecker | 45a7337 | 2010-06-23 23:00:37 +0200 | [diff] [blame] | 582 | }; |
Frederic Weisbecker | 24f1e32c | 2009-09-09 19:22:48 +0200 | [diff] [blame] | 583 | #endif |
Peter Zijlstra | d6d020e | 2009-03-13 12:21:35 +0100 | [diff] [blame] | 584 | }; |
Peter Zijlstra | a4eaf7f | 2010-06-16 14:37:10 +0200 | [diff] [blame] | 585 | int state; |
Peter Zijlstra | e785059 | 2010-05-21 14:43:08 +0200 | [diff] [blame] | 586 | local64_t prev_count; |
Peter Zijlstra | b23f332 | 2009-06-02 15:13:03 +0200 | [diff] [blame] | 587 | u64 sample_period; |
Peter Zijlstra | 9e350de | 2009-06-10 21:34:59 +0200 | [diff] [blame] | 588 | u64 last_period; |
Peter Zijlstra | e785059 | 2010-05-21 14:43:08 +0200 | [diff] [blame] | 589 | local64_t period_left; |
Peter Zijlstra | 60db5e0 | 2009-05-15 15:19:28 +0200 | [diff] [blame] | 590 | u64 interrupts; |
Peter Zijlstra | 6a24ed6c | 2009-06-05 18:01:29 +0200 | [diff] [blame] | 591 | |
Peter Zijlstra | abd5071 | 2010-01-26 18:50:16 +0100 | [diff] [blame] | 592 | u64 freq_time_stamp; |
| 593 | u64 freq_count_stamp; |
Ingo Molnar | ee06094 | 2008-12-13 09:00:03 +0100 | [diff] [blame] | 594 | #endif |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 595 | }; |
| 596 | |
Peter Zijlstra | a4eaf7f | 2010-06-16 14:37:10 +0200 | [diff] [blame] | 597 | /* |
| 598 | * hw_perf_event::state flags |
| 599 | */ |
| 600 | #define PERF_HES_STOPPED 0x01 /* the counter is stopped */ |
| 601 | #define PERF_HES_UPTODATE 0x02 /* event->count up-to-date */ |
| 602 | #define PERF_HES_ARCH 0x04 |
| 603 | |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 604 | struct perf_event; |
Ingo Molnar | 621a01e | 2008-12-11 12:46:46 +0100 | [diff] [blame] | 605 | |
Peter Zijlstra | 8d2cacb | 2010-05-25 17:49:05 +0200 | [diff] [blame] | 606 | /* |
| 607 | * Common implementation detail of pmu::{start,commit,cancel}_txn |
| 608 | */ |
| 609 | #define PERF_EVENT_TXN 0x1 |
Lin Ming | 6bde9b6 | 2010-04-23 13:56:00 +0800 | [diff] [blame] | 610 | |
Ingo Molnar | 621a01e | 2008-12-11 12:46:46 +0100 | [diff] [blame] | 611 | /** |
Robert Richter | 4aeb0b4 | 2009-04-29 12:47:03 +0200 | [diff] [blame] | 612 | * struct pmu - generic performance monitoring unit |
Ingo Molnar | 621a01e | 2008-12-11 12:46:46 +0100 | [diff] [blame] | 613 | */ |
Robert Richter | 4aeb0b4 | 2009-04-29 12:47:03 +0200 | [diff] [blame] | 614 | struct pmu { |
Peter Zijlstra | b0a873e | 2010-06-11 13:35:08 +0200 | [diff] [blame] | 615 | struct list_head entry; |
| 616 | |
Peter Zijlstra | abe4340 | 2010-11-17 23:17:37 +0100 | [diff] [blame] | 617 | struct device *dev; |
Peter Zijlstra | 2e80a82 | 2010-11-17 23:17:36 +0100 | [diff] [blame] | 618 | char *name; |
| 619 | int type; |
| 620 | |
Peter Zijlstra | 108b02c | 2010-09-06 14:32:03 +0200 | [diff] [blame] | 621 | int * __percpu pmu_disable_count; |
| 622 | struct perf_cpu_context * __percpu pmu_cpu_context; |
Peter Zijlstra | 8dc85d5 | 2010-09-02 16:50:03 +0200 | [diff] [blame] | 623 | int task_ctx_nr; |
Peter Zijlstra | 33696fc | 2010-06-14 08:49:00 +0200 | [diff] [blame] | 624 | |
Peter Zijlstra | a4eaf7f | 2010-06-16 14:37:10 +0200 | [diff] [blame] | 625 | /* |
| 626 | * Fully disable/enable this PMU, can be used to protect from the PMI |
| 627 | * as well as for lazy/batch writing of the MSRs. |
| 628 | */ |
Peter Zijlstra | ad5133b | 2010-06-15 12:22:39 +0200 | [diff] [blame] | 629 | void (*pmu_enable) (struct pmu *pmu); /* optional */ |
| 630 | void (*pmu_disable) (struct pmu *pmu); /* optional */ |
Peter Zijlstra | 33696fc | 2010-06-14 08:49:00 +0200 | [diff] [blame] | 631 | |
Peter Zijlstra | b0a873e | 2010-06-11 13:35:08 +0200 | [diff] [blame] | 632 | /* |
Peter Zijlstra | a4eaf7f | 2010-06-16 14:37:10 +0200 | [diff] [blame] | 633 | * Try and initialize the event for this PMU. |
Peter Zijlstra | 24cd7f5 | 2010-06-11 17:32:03 +0200 | [diff] [blame] | 634 | * Should return -ENOENT when the @event doesn't match this PMU. |
Peter Zijlstra | b0a873e | 2010-06-11 13:35:08 +0200 | [diff] [blame] | 635 | */ |
| 636 | int (*event_init) (struct perf_event *event); |
| 637 | |
Peter Zijlstra | a4eaf7f | 2010-06-16 14:37:10 +0200 | [diff] [blame] | 638 | #define PERF_EF_START 0x01 /* start the counter when adding */ |
| 639 | #define PERF_EF_RELOAD 0x02 /* reload the counter when starting */ |
| 640 | #define PERF_EF_UPDATE 0x04 /* update the counter when stopping */ |
| 641 | |
| 642 | /* |
| 643 | * Adds/Removes a counter to/from the PMU, can be done inside |
| 644 | * a transaction, see the ->*_txn() methods. |
| 645 | */ |
| 646 | int (*add) (struct perf_event *event, int flags); |
| 647 | void (*del) (struct perf_event *event, int flags); |
| 648 | |
| 649 | /* |
| 650 | * Starts/Stops a counter present on the PMU. The PMI handler |
| 651 | * should stop the counter when perf_event_overflow() returns |
| 652 | * !0. ->start() will be used to continue. |
| 653 | */ |
| 654 | void (*start) (struct perf_event *event, int flags); |
| 655 | void (*stop) (struct perf_event *event, int flags); |
| 656 | |
| 657 | /* |
| 658 | * Updates the counter value of the event. |
| 659 | */ |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 660 | void (*read) (struct perf_event *event); |
Lin Ming | 6bde9b6 | 2010-04-23 13:56:00 +0800 | [diff] [blame] | 661 | |
| 662 | /* |
Peter Zijlstra | 24cd7f5 | 2010-06-11 17:32:03 +0200 | [diff] [blame] | 663 | * Group events scheduling is treated as a transaction, add |
| 664 | * group events as a whole and perform one schedulability test. |
| 665 | * If the test fails, roll back the whole group |
Peter Zijlstra | a4eaf7f | 2010-06-16 14:37:10 +0200 | [diff] [blame] | 666 | * |
| 667 | * Start the transaction, after this ->add() doesn't need to |
Peter Zijlstra | 24cd7f5 | 2010-06-11 17:32:03 +0200 | [diff] [blame] | 668 | * do schedulability tests. |
Lin Ming | 6bde9b6 | 2010-04-23 13:56:00 +0800 | [diff] [blame] | 669 | */ |
Ingo Molnar | e7e7ee2 | 2011-05-04 08:42:29 +0200 | [diff] [blame] | 670 | void (*start_txn) (struct pmu *pmu); /* optional */ |
Peter Zijlstra | 8d2cacb | 2010-05-25 17:49:05 +0200 | [diff] [blame] | 671 | /* |
Peter Zijlstra | a4eaf7f | 2010-06-16 14:37:10 +0200 | [diff] [blame] | 672 | * If ->start_txn() disabled the ->add() schedulability test |
Peter Zijlstra | 8d2cacb | 2010-05-25 17:49:05 +0200 | [diff] [blame] | 673 | * then ->commit_txn() is required to perform one. On success |
| 674 | * the transaction is closed. On error the transaction is kept |
| 675 | * open until ->cancel_txn() is called. |
| 676 | */ |
Ingo Molnar | e7e7ee2 | 2011-05-04 08:42:29 +0200 | [diff] [blame] | 677 | int (*commit_txn) (struct pmu *pmu); /* optional */ |
Peter Zijlstra | 8d2cacb | 2010-05-25 17:49:05 +0200 | [diff] [blame] | 678 | /* |
Peter Zijlstra | a4eaf7f | 2010-06-16 14:37:10 +0200 | [diff] [blame] | 679 | * Will cancel the transaction, assumes ->del() is called |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 680 | * for each successful ->add() during the transaction. |
Peter Zijlstra | 8d2cacb | 2010-05-25 17:49:05 +0200 | [diff] [blame] | 681 | */ |
Ingo Molnar | e7e7ee2 | 2011-05-04 08:42:29 +0200 | [diff] [blame] | 682 | void (*cancel_txn) (struct pmu *pmu); /* optional */ |
Ingo Molnar | 621a01e | 2008-12-11 12:46:46 +0100 | [diff] [blame] | 683 | }; |
| 684 | |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 685 | /** |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 686 | * enum perf_event_active_state - the states of a event |
Ingo Molnar | 6a93070 | 2008-12-11 15:17:03 +0100 | [diff] [blame] | 687 | */ |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 688 | enum perf_event_active_state { |
Ingo Molnar | 57c0c15 | 2009-09-21 12:20:38 +0200 | [diff] [blame] | 689 | PERF_EVENT_STATE_ERROR = -2, |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 690 | PERF_EVENT_STATE_OFF = -1, |
| 691 | PERF_EVENT_STATE_INACTIVE = 0, |
Ingo Molnar | 57c0c15 | 2009-09-21 12:20:38 +0200 | [diff] [blame] | 692 | PERF_EVENT_STATE_ACTIVE = 1, |
Ingo Molnar | 6a93070 | 2008-12-11 15:17:03 +0100 | [diff] [blame] | 693 | }; |
| 694 | |
Ingo Molnar | 9b51f66 | 2008-12-12 13:49:45 +0100 | [diff] [blame] | 695 | struct file; |
Peter Zijlstra | 453f19e | 2009-11-20 22:19:43 +0100 | [diff] [blame] | 696 | struct perf_sample_data; |
| 697 | |
Peter Zijlstra | a8b0ca1 | 2011-06-27 14:41:57 +0200 | [diff] [blame] | 698 | typedef void (*perf_overflow_handler_t)(struct perf_event *, |
Frederic Weisbecker | b326e95 | 2009-12-05 09:44:31 +0100 | [diff] [blame] | 699 | struct perf_sample_data *, |
| 700 | struct pt_regs *regs); |
| 701 | |
Frederic Weisbecker | d6f962b | 2010-01-10 01:25:51 +0100 | [diff] [blame] | 702 | enum perf_group_flag { |
Ingo Molnar | e7e7ee2 | 2011-05-04 08:42:29 +0200 | [diff] [blame] | 703 | PERF_GROUP_SOFTWARE = 0x1, |
Frederic Weisbecker | d6f962b | 2010-01-10 01:25:51 +0100 | [diff] [blame] | 704 | }; |
| 705 | |
Ingo Molnar | e7e7ee2 | 2011-05-04 08:42:29 +0200 | [diff] [blame] | 706 | #define SWEVENT_HLIST_BITS 8 |
| 707 | #define SWEVENT_HLIST_SIZE (1 << SWEVENT_HLIST_BITS) |
Frederic Weisbecker | 76e1d90 | 2010-04-05 15:35:57 +0200 | [diff] [blame] | 708 | |
| 709 | struct swevent_hlist { |
Ingo Molnar | e7e7ee2 | 2011-05-04 08:42:29 +0200 | [diff] [blame] | 710 | struct hlist_head heads[SWEVENT_HLIST_SIZE]; |
| 711 | struct rcu_head rcu_head; |
Frederic Weisbecker | 76e1d90 | 2010-04-05 15:35:57 +0200 | [diff] [blame] | 712 | }; |
| 713 | |
Peter Zijlstra | 8a49542 | 2010-05-27 15:47:49 +0200 | [diff] [blame] | 714 | #define PERF_ATTACH_CONTEXT 0x01 |
| 715 | #define PERF_ATTACH_GROUP 0x02 |
Peter Zijlstra | d580ff8 | 2010-10-14 17:43:23 +0200 | [diff] [blame] | 716 | #define PERF_ATTACH_TASK 0x04 |
Peter Zijlstra | 8a49542 | 2010-05-27 15:47:49 +0200 | [diff] [blame] | 717 | |
Stephane Eranian | e5d1367 | 2011-02-14 11:20:01 +0200 | [diff] [blame] | 718 | #ifdef CONFIG_CGROUP_PERF |
| 719 | /* |
| 720 | * perf_cgroup_info keeps track of time_enabled for a cgroup. |
| 721 | * This is a per-cpu dynamically allocated data structure. |
| 722 | */ |
| 723 | struct perf_cgroup_info { |
Ingo Molnar | e7e7ee2 | 2011-05-04 08:42:29 +0200 | [diff] [blame] | 724 | u64 time; |
| 725 | u64 timestamp; |
Stephane Eranian | e5d1367 | 2011-02-14 11:20:01 +0200 | [diff] [blame] | 726 | }; |
| 727 | |
| 728 | struct perf_cgroup { |
Ingo Molnar | e7e7ee2 | 2011-05-04 08:42:29 +0200 | [diff] [blame] | 729 | struct cgroup_subsys_state css; |
| 730 | struct perf_cgroup_info *info; /* timing info, one per cpu */ |
Stephane Eranian | e5d1367 | 2011-02-14 11:20:01 +0200 | [diff] [blame] | 731 | }; |
| 732 | #endif |
| 733 | |
Frederic Weisbecker | 7636913 | 2011-05-19 19:55:04 +0200 | [diff] [blame] | 734 | struct ring_buffer; |
| 735 | |
Ingo Molnar | 6a93070 | 2008-12-11 15:17:03 +0100 | [diff] [blame] | 736 | /** |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 737 | * struct perf_event - performance event kernel representation: |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 738 | */ |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 739 | struct perf_event { |
| 740 | #ifdef CONFIG_PERF_EVENTS |
Ingo Molnar | 65abc86 | 2009-09-21 10:18:27 +0200 | [diff] [blame] | 741 | struct list_head group_entry; |
Peter Zijlstra | 592903c | 2009-03-13 12:21:36 +0100 | [diff] [blame] | 742 | struct list_head event_entry; |
Ingo Molnar | 04289bb | 2008-12-11 08:38:42 +0100 | [diff] [blame] | 743 | struct list_head sibling_list; |
Frederic Weisbecker | 76e1d90 | 2010-04-05 15:35:57 +0200 | [diff] [blame] | 744 | struct hlist_node hlist_entry; |
Ingo Molnar | 0127c3e | 2009-05-25 22:03:26 +0200 | [diff] [blame] | 745 | int nr_siblings; |
Frederic Weisbecker | d6f962b | 2010-01-10 01:25:51 +0100 | [diff] [blame] | 746 | int group_flags; |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 747 | struct perf_event *group_leader; |
Peter Zijlstra | a4eaf7f | 2010-06-16 14:37:10 +0200 | [diff] [blame] | 748 | struct pmu *pmu; |
Ingo Molnar | 04289bb | 2008-12-11 08:38:42 +0100 | [diff] [blame] | 749 | |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 750 | enum perf_event_active_state state; |
Peter Zijlstra | 8a49542 | 2010-05-27 15:47:49 +0200 | [diff] [blame] | 751 | unsigned int attach_state; |
Peter Zijlstra | e785059 | 2010-05-21 14:43:08 +0200 | [diff] [blame] | 752 | local64_t count; |
Peter Zijlstra | a6e6dea | 2010-05-21 14:27:58 +0200 | [diff] [blame] | 753 | atomic64_t child_count; |
Ingo Molnar | ee06094 | 2008-12-13 09:00:03 +0100 | [diff] [blame] | 754 | |
Paul Mackerras | 53cfbf5 | 2009-03-25 22:46:58 +1100 | [diff] [blame] | 755 | /* |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 756 | * These are the total time in nanoseconds that the event |
Paul Mackerras | 53cfbf5 | 2009-03-25 22:46:58 +1100 | [diff] [blame] | 757 | * has been enabled (i.e. eligible to run, and the task has |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 758 | * been scheduled in, if this is a per-task event) |
Paul Mackerras | 53cfbf5 | 2009-03-25 22:46:58 +1100 | [diff] [blame] | 759 | * and running (scheduled onto the CPU), respectively. |
| 760 | * |
| 761 | * They are computed from tstamp_enabled, tstamp_running and |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 762 | * tstamp_stopped when the event is in INACTIVE or ACTIVE state. |
Paul Mackerras | 53cfbf5 | 2009-03-25 22:46:58 +1100 | [diff] [blame] | 763 | */ |
| 764 | u64 total_time_enabled; |
| 765 | u64 total_time_running; |
| 766 | |
| 767 | /* |
| 768 | * These are timestamps used for computing total_time_enabled |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 769 | * and total_time_running when the event is in INACTIVE or |
Paul Mackerras | 53cfbf5 | 2009-03-25 22:46:58 +1100 | [diff] [blame] | 770 | * ACTIVE state, measured in nanoseconds from an arbitrary point |
| 771 | * in time. |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 772 | * tstamp_enabled: the notional time when the event was enabled |
| 773 | * tstamp_running: the notional time when the event was scheduled on |
Paul Mackerras | 53cfbf5 | 2009-03-25 22:46:58 +1100 | [diff] [blame] | 774 | * tstamp_stopped: in INACTIVE state, the notional time when the |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 775 | * event was scheduled off. |
Paul Mackerras | 53cfbf5 | 2009-03-25 22:46:58 +1100 | [diff] [blame] | 776 | */ |
| 777 | u64 tstamp_enabled; |
| 778 | u64 tstamp_running; |
| 779 | u64 tstamp_stopped; |
| 780 | |
Stephane Eranian | eed0152 | 2010-10-26 16:08:01 +0200 | [diff] [blame] | 781 | /* |
| 782 | * timestamp shadows the actual context timing but it can |
| 783 | * be safely used in NMI interrupt context. It reflects the |
| 784 | * context time as it was when the event was last scheduled in. |
| 785 | * |
| 786 | * ctx_time already accounts for ctx->timestamp. Therefore to |
| 787 | * compute ctx_time for a sample, simply add perf_clock(). |
| 788 | */ |
| 789 | u64 shadow_ctx_time; |
| 790 | |
Frederic Weisbecker | 24f1e32c | 2009-09-09 19:22:48 +0200 | [diff] [blame] | 791 | struct perf_event_attr attr; |
Arnaldo Carvalho de Melo | c320c7b | 2010-10-20 12:50:11 -0200 | [diff] [blame] | 792 | u16 header_size; |
Arnaldo Carvalho de Melo | 6844c09 | 2010-12-03 16:36:35 -0200 | [diff] [blame] | 793 | u16 id_header_size; |
Arnaldo Carvalho de Melo | c320c7b | 2010-10-20 12:50:11 -0200 | [diff] [blame] | 794 | u16 read_size; |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 795 | struct hw_perf_event hw; |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 796 | |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 797 | struct perf_event_context *ctx; |
Ingo Molnar | 9b51f66 | 2008-12-12 13:49:45 +0100 | [diff] [blame] | 798 | struct file *filp; |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 799 | |
| 800 | /* |
Paul Mackerras | 53cfbf5 | 2009-03-25 22:46:58 +1100 | [diff] [blame] | 801 | * These accumulate total time (in nanoseconds) that children |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 802 | * events have been enabled and running, respectively. |
Paul Mackerras | 53cfbf5 | 2009-03-25 22:46:58 +1100 | [diff] [blame] | 803 | */ |
| 804 | atomic64_t child_total_time_enabled; |
| 805 | atomic64_t child_total_time_running; |
| 806 | |
| 807 | /* |
Paul Mackerras | d859e29 | 2009-01-17 18:10:22 +1100 | [diff] [blame] | 808 | * Protect attach/detach and child_list: |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 809 | */ |
Peter Zijlstra | fccc714 | 2009-05-23 18:28:56 +0200 | [diff] [blame] | 810 | struct mutex child_mutex; |
| 811 | struct list_head child_list; |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 812 | struct perf_event *parent; |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 813 | |
| 814 | int oncpu; |
| 815 | int cpu; |
| 816 | |
Peter Zijlstra | 082ff5a | 2009-05-23 18:29:00 +0200 | [diff] [blame] | 817 | struct list_head owner_entry; |
| 818 | struct task_struct *owner; |
| 819 | |
Peter Zijlstra | 7b732a7 | 2009-03-23 18:22:10 +0100 | [diff] [blame] | 820 | /* mmap bits */ |
| 821 | struct mutex mmap_mutex; |
| 822 | atomic_t mmap_count; |
Peter Zijlstra | ac9721f | 2010-05-27 12:54:41 +0200 | [diff] [blame] | 823 | int mmap_locked; |
| 824 | struct user_struct *mmap_user; |
Frederic Weisbecker | 7636913 | 2011-05-19 19:55:04 +0200 | [diff] [blame] | 825 | struct ring_buffer *rb; |
Peter Zijlstra | 10c6db1 | 2011-11-26 02:47:31 +0100 | [diff] [blame] | 826 | struct list_head rb_entry; |
Paul Mackerras | 37d8182 | 2009-03-23 18:22:08 +0100 | [diff] [blame] | 827 | |
Peter Zijlstra | 7b732a7 | 2009-03-23 18:22:10 +0100 | [diff] [blame] | 828 | /* poll related */ |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 829 | wait_queue_head_t waitq; |
Peter Zijlstra | 3c446b3d | 2009-04-06 11:45:01 +0200 | [diff] [blame] | 830 | struct fasync_struct *fasync; |
Peter Zijlstra | 79f1464 | 2009-04-06 11:45:07 +0200 | [diff] [blame] | 831 | |
| 832 | /* delayed work for NMIs and such */ |
| 833 | int pending_wakeup; |
Peter Zijlstra | 4c9e254 | 2009-04-06 11:45:09 +0200 | [diff] [blame] | 834 | int pending_kill; |
Peter Zijlstra | 79f1464 | 2009-04-06 11:45:07 +0200 | [diff] [blame] | 835 | int pending_disable; |
Peter Zijlstra | e360adb | 2010-10-14 14:01:34 +0800 | [diff] [blame] | 836 | struct irq_work pending; |
Peter Zijlstra | 592903c | 2009-03-13 12:21:36 +0100 | [diff] [blame] | 837 | |
Peter Zijlstra | 79f1464 | 2009-04-06 11:45:07 +0200 | [diff] [blame] | 838 | atomic_t event_limit; |
| 839 | |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 840 | void (*destroy)(struct perf_event *); |
Peter Zijlstra | 592903c | 2009-03-13 12:21:36 +0100 | [diff] [blame] | 841 | struct rcu_head rcu_head; |
Peter Zijlstra | 709e50c | 2009-06-02 14:13:15 +0200 | [diff] [blame] | 842 | |
| 843 | struct pid_namespace *ns; |
Peter Zijlstra | 8e5799b | 2009-06-02 15:08:15 +0200 | [diff] [blame] | 844 | u64 id; |
Li Zefan | 6fb2915 | 2009-10-15 11:21:42 +0800 | [diff] [blame] | 845 | |
Frederic Weisbecker | b326e95 | 2009-12-05 09:44:31 +0100 | [diff] [blame] | 846 | perf_overflow_handler_t overflow_handler; |
Avi Kivity | 4dc0da8 | 2011-06-29 18:42:35 +0300 | [diff] [blame] | 847 | void *overflow_handler_context; |
Peter Zijlstra | 453f19e | 2009-11-20 22:19:43 +0100 | [diff] [blame] | 848 | |
Li Zefan | 07b139c | 2009-12-21 14:27:35 +0800 | [diff] [blame] | 849 | #ifdef CONFIG_EVENT_TRACING |
Peter Zijlstra | 1c024eca | 2010-05-19 14:02:22 +0200 | [diff] [blame] | 850 | struct ftrace_event_call *tp_event; |
Li Zefan | 6fb2915 | 2009-10-15 11:21:42 +0800 | [diff] [blame] | 851 | struct event_filter *filter; |
Ingo Molnar | ee06094 | 2008-12-13 09:00:03 +0100 | [diff] [blame] | 852 | #endif |
Li Zefan | 6fb2915 | 2009-10-15 11:21:42 +0800 | [diff] [blame] | 853 | |
Stephane Eranian | e5d1367 | 2011-02-14 11:20:01 +0200 | [diff] [blame] | 854 | #ifdef CONFIG_CGROUP_PERF |
| 855 | struct perf_cgroup *cgrp; /* cgroup event is attach to */ |
| 856 | int cgrp_defer_enabled; |
| 857 | #endif |
| 858 | |
Li Zefan | 6fb2915 | 2009-10-15 11:21:42 +0800 | [diff] [blame] | 859 | #endif /* CONFIG_PERF_EVENTS */ |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 860 | }; |
| 861 | |
Peter Zijlstra | b04243e | 2010-09-17 11:28:48 +0200 | [diff] [blame] | 862 | enum perf_event_context_type { |
| 863 | task_context, |
| 864 | cpu_context, |
| 865 | }; |
| 866 | |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 867 | /** |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 868 | * struct perf_event_context - event context structure |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 869 | * |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 870 | * Used as a container for task events and CPU events as well: |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 871 | */ |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 872 | struct perf_event_context { |
Peter Zijlstra | 108b02c | 2010-09-06 14:32:03 +0200 | [diff] [blame] | 873 | struct pmu *pmu; |
Richard Kennedy | ee643c4 | 2011-03-07 15:46:59 +0000 | [diff] [blame] | 874 | enum perf_event_context_type type; |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 875 | /* |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 876 | * Protect the states of the events in the list, |
Paul Mackerras | d859e29 | 2009-01-17 18:10:22 +1100 | [diff] [blame] | 877 | * nr_active, and the list: |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 878 | */ |
Thomas Gleixner | e625cce1 | 2009-11-17 18:02:06 +0100 | [diff] [blame] | 879 | raw_spinlock_t lock; |
Paul Mackerras | d859e29 | 2009-01-17 18:10:22 +1100 | [diff] [blame] | 880 | /* |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 881 | * Protect the list of events. Locking either mutex or lock |
Paul Mackerras | d859e29 | 2009-01-17 18:10:22 +1100 | [diff] [blame] | 882 | * is sufficient to ensure the list doesn't change; to change |
| 883 | * the list you need to lock both the mutex and the spinlock. |
| 884 | */ |
Ingo Molnar | a308444 | 2009-06-11 14:44:26 +0200 | [diff] [blame] | 885 | struct mutex mutex; |
Ingo Molnar | 04289bb | 2008-12-11 08:38:42 +0100 | [diff] [blame] | 886 | |
Frederic Weisbecker | 889ff01 | 2010-01-09 20:04:47 +0100 | [diff] [blame] | 887 | struct list_head pinned_groups; |
| 888 | struct list_head flexible_groups; |
Ingo Molnar | a308444 | 2009-06-11 14:44:26 +0200 | [diff] [blame] | 889 | struct list_head event_list; |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 890 | int nr_events; |
Ingo Molnar | a308444 | 2009-06-11 14:44:26 +0200 | [diff] [blame] | 891 | int nr_active; |
| 892 | int is_active; |
Peter Zijlstra | bfbd338 | 2009-06-24 21:11:59 +0200 | [diff] [blame] | 893 | int nr_stat; |
Peter Zijlstra | 0f5a260 | 2011-11-16 14:38:16 +0100 | [diff] [blame] | 894 | int nr_freq; |
Thomas Gleixner | dddd337 | 2010-11-24 10:05:55 +0100 | [diff] [blame] | 895 | int rotate_disable; |
Ingo Molnar | a308444 | 2009-06-11 14:44:26 +0200 | [diff] [blame] | 896 | atomic_t refcount; |
| 897 | struct task_struct *task; |
Paul Mackerras | 53cfbf5 | 2009-03-25 22:46:58 +1100 | [diff] [blame] | 898 | |
| 899 | /* |
Peter Zijlstra | 4af4998 | 2009-04-06 11:45:10 +0200 | [diff] [blame] | 900 | * Context clock, runs when context enabled. |
Paul Mackerras | 53cfbf5 | 2009-03-25 22:46:58 +1100 | [diff] [blame] | 901 | */ |
Ingo Molnar | a308444 | 2009-06-11 14:44:26 +0200 | [diff] [blame] | 902 | u64 time; |
| 903 | u64 timestamp; |
Paul Mackerras | 564c2b2 | 2009-05-22 14:27:22 +1000 | [diff] [blame] | 904 | |
| 905 | /* |
| 906 | * These fields let us detect when two contexts have both |
| 907 | * been cloned (inherited) from a common ancestor. |
| 908 | */ |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 909 | struct perf_event_context *parent_ctx; |
Ingo Molnar | a308444 | 2009-06-11 14:44:26 +0200 | [diff] [blame] | 910 | u64 parent_gen; |
| 911 | u64 generation; |
| 912 | int pin_count; |
Stephane Eranian | e5d1367 | 2011-02-14 11:20:01 +0200 | [diff] [blame] | 913 | int nr_cgroups; /* cgroup events present */ |
Richard Kennedy | 28009ce | 2011-06-07 16:33:38 +0100 | [diff] [blame] | 914 | struct rcu_head rcu_head; |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 915 | }; |
| 916 | |
Frederic Weisbecker | 7ae07ea | 2010-08-14 20:45:13 +0200 | [diff] [blame] | 917 | /* |
| 918 | * Number of contexts where an event can trigger: |
Ingo Molnar | e7e7ee2 | 2011-05-04 08:42:29 +0200 | [diff] [blame] | 919 | * task, softirq, hardirq, nmi. |
Frederic Weisbecker | 7ae07ea | 2010-08-14 20:45:13 +0200 | [diff] [blame] | 920 | */ |
| 921 | #define PERF_NR_CONTEXTS 4 |
| 922 | |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 923 | /** |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 924 | * struct perf_event_cpu_context - per cpu event context structure |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 925 | */ |
| 926 | struct perf_cpu_context { |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 927 | struct perf_event_context ctx; |
| 928 | struct perf_event_context *task_ctx; |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 929 | int active_oncpu; |
Paul Mackerras | 3b6f9e5 | 2009-01-14 21:00:30 +1100 | [diff] [blame] | 930 | int exclusive; |
Peter Zijlstra | e9d2b06 | 2010-09-17 11:28:50 +0200 | [diff] [blame] | 931 | struct list_head rotation_list; |
| 932 | int jiffies_interval; |
Peter Zijlstra | 5167695 | 2010-12-07 14:18:20 +0100 | [diff] [blame] | 933 | struct pmu *active_pmu; |
Stephane Eranian | e5d1367 | 2011-02-14 11:20:01 +0200 | [diff] [blame] | 934 | struct perf_cgroup *cgrp; |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 935 | }; |
| 936 | |
Markus Metzger | 5622f29 | 2009-09-15 13:00:23 +0200 | [diff] [blame] | 937 | struct perf_output_handle { |
Ingo Molnar | 57c0c15 | 2009-09-21 12:20:38 +0200 | [diff] [blame] | 938 | struct perf_event *event; |
Frederic Weisbecker | 7636913 | 2011-05-19 19:55:04 +0200 | [diff] [blame] | 939 | struct ring_buffer *rb; |
Peter Zijlstra | 6d1acfd | 2010-05-18 11:12:48 +0200 | [diff] [blame] | 940 | unsigned long wakeup; |
Peter Zijlstra | 5d967a8 | 2010-05-20 16:46:39 +0200 | [diff] [blame] | 941 | unsigned long size; |
| 942 | void *addr; |
| 943 | int page; |
Markus Metzger | 5622f29 | 2009-09-15 13:00:23 +0200 | [diff] [blame] | 944 | }; |
| 945 | |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 946 | #ifdef CONFIG_PERF_EVENTS |
Robert Richter | 829b42d | 2009-04-29 12:46:59 +0200 | [diff] [blame] | 947 | |
Peter Zijlstra | 2e80a82 | 2010-11-17 23:17:36 +0100 | [diff] [blame] | 948 | extern int perf_pmu_register(struct pmu *pmu, char *name, int type); |
Peter Zijlstra | b0a873e | 2010-06-11 13:35:08 +0200 | [diff] [blame] | 949 | extern void perf_pmu_unregister(struct pmu *pmu); |
Ingo Molnar | 621a01e | 2008-12-11 12:46:46 +0100 | [diff] [blame] | 950 | |
Matt Fleming | 3bf101b | 2010-09-27 20:22:24 +0100 | [diff] [blame] | 951 | extern int perf_num_counters(void); |
Matt Fleming | 84c7991 | 2010-10-03 21:41:13 +0100 | [diff] [blame] | 952 | extern const char *perf_pmu_name(void); |
Stephane Eranian | a8d757e | 2011-08-25 15:58:03 +0200 | [diff] [blame] | 953 | extern void __perf_event_task_sched_in(struct task_struct *prev, |
| 954 | struct task_struct *task); |
| 955 | extern void __perf_event_task_sched_out(struct task_struct *prev, |
| 956 | struct task_struct *next); |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 957 | extern int perf_event_init_task(struct task_struct *child); |
| 958 | extern void perf_event_exit_task(struct task_struct *child); |
| 959 | extern void perf_event_free_task(struct task_struct *task); |
Peter Zijlstra | 4e231c7 | 2010-09-09 21:01:59 +0200 | [diff] [blame] | 960 | extern void perf_event_delayed_put(struct task_struct *task); |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 961 | extern void perf_event_print_debug(void); |
Peter Zijlstra | 33696fc | 2010-06-14 08:49:00 +0200 | [diff] [blame] | 962 | extern void perf_pmu_disable(struct pmu *pmu); |
| 963 | extern void perf_pmu_enable(struct pmu *pmu); |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 964 | extern int perf_event_task_disable(void); |
| 965 | extern int perf_event_task_enable(void); |
Avi Kivity | 26ca5c1 | 2011-06-29 18:42:37 +0300 | [diff] [blame] | 966 | extern int perf_event_refresh(struct perf_event *event, int refresh); |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 967 | extern void perf_event_update_userpage(struct perf_event *event); |
Arjan van de Ven | fb0459d | 2009-09-25 12:25:56 +0200 | [diff] [blame] | 968 | extern int perf_event_release_kernel(struct perf_event *event); |
| 969 | extern struct perf_event * |
| 970 | perf_event_create_kernel_counter(struct perf_event_attr *attr, |
| 971 | int cpu, |
Matt Helsley | 38a81da | 2010-09-13 13:01:20 -0700 | [diff] [blame] | 972 | struct task_struct *task, |
Avi Kivity | 4dc0da8 | 2011-06-29 18:42:35 +0300 | [diff] [blame] | 973 | perf_overflow_handler_t callback, |
| 974 | void *context); |
Peter Zijlstra | 59ed446 | 2009-11-20 22:19:55 +0100 | [diff] [blame] | 975 | extern u64 perf_event_read_value(struct perf_event *event, |
| 976 | u64 *enabled, u64 *running); |
Ingo Molnar | 5c92d12 | 2008-12-11 13:21:10 +0100 | [diff] [blame] | 977 | |
Peter Zijlstra | df1a132 | 2009-06-10 21:02:22 +0200 | [diff] [blame] | 978 | struct perf_sample_data { |
Markus Metzger | 5622f29 | 2009-09-15 13:00:23 +0200 | [diff] [blame] | 979 | u64 type; |
| 980 | |
| 981 | u64 ip; |
| 982 | struct { |
| 983 | u32 pid; |
| 984 | u32 tid; |
| 985 | } tid_entry; |
| 986 | u64 time; |
Ingo Molnar | a308444 | 2009-06-11 14:44:26 +0200 | [diff] [blame] | 987 | u64 addr; |
Markus Metzger | 5622f29 | 2009-09-15 13:00:23 +0200 | [diff] [blame] | 988 | u64 id; |
| 989 | u64 stream_id; |
| 990 | struct { |
| 991 | u32 cpu; |
| 992 | u32 reserved; |
| 993 | } cpu_entry; |
Ingo Molnar | a308444 | 2009-06-11 14:44:26 +0200 | [diff] [blame] | 994 | u64 period; |
Markus Metzger | 5622f29 | 2009-09-15 13:00:23 +0200 | [diff] [blame] | 995 | struct perf_callchain_entry *callchain; |
Frederic Weisbecker | 3a43ce6 | 2009-08-08 04:26:37 +0200 | [diff] [blame] | 996 | struct perf_raw_record *raw; |
Peter Zijlstra | df1a132 | 2009-06-10 21:02:22 +0200 | [diff] [blame] | 997 | }; |
| 998 | |
Ingo Molnar | e7e7ee2 | 2011-05-04 08:42:29 +0200 | [diff] [blame] | 999 | static inline void perf_sample_data_init(struct perf_sample_data *data, u64 addr) |
Peter Zijlstra | dc1d628 | 2010-03-03 15:55:04 +0100 | [diff] [blame] | 1000 | { |
| 1001 | data->addr = addr; |
| 1002 | data->raw = NULL; |
| 1003 | } |
| 1004 | |
Markus Metzger | 5622f29 | 2009-09-15 13:00:23 +0200 | [diff] [blame] | 1005 | extern void perf_output_sample(struct perf_output_handle *handle, |
| 1006 | struct perf_event_header *header, |
| 1007 | struct perf_sample_data *data, |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 1008 | struct perf_event *event); |
Markus Metzger | 5622f29 | 2009-09-15 13:00:23 +0200 | [diff] [blame] | 1009 | extern void perf_prepare_sample(struct perf_event_header *header, |
| 1010 | struct perf_sample_data *data, |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 1011 | struct perf_event *event, |
Markus Metzger | 5622f29 | 2009-09-15 13:00:23 +0200 | [diff] [blame] | 1012 | struct pt_regs *regs); |
| 1013 | |
Peter Zijlstra | a8b0ca1 | 2011-06-27 14:41:57 +0200 | [diff] [blame] | 1014 | extern int perf_event_overflow(struct perf_event *event, |
Markus Metzger | 5622f29 | 2009-09-15 13:00:23 +0200 | [diff] [blame] | 1015 | struct perf_sample_data *data, |
| 1016 | struct pt_regs *regs); |
Peter Zijlstra | df1a132 | 2009-06-10 21:02:22 +0200 | [diff] [blame] | 1017 | |
Franck Bui-Huu | 6c7e550 | 2010-11-23 16:21:43 +0100 | [diff] [blame] | 1018 | static inline bool is_sampling_event(struct perf_event *event) |
| 1019 | { |
| 1020 | return event->attr.sample_period != 0; |
| 1021 | } |
| 1022 | |
Paul Mackerras | 3b6f9e5 | 2009-01-14 21:00:30 +1100 | [diff] [blame] | 1023 | /* |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 1024 | * Return 1 for a software event, 0 for a hardware event |
Paul Mackerras | 3b6f9e5 | 2009-01-14 21:00:30 +1100 | [diff] [blame] | 1025 | */ |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 1026 | static inline int is_software_event(struct perf_event *event) |
Paul Mackerras | 3b6f9e5 | 2009-01-14 21:00:30 +1100 | [diff] [blame] | 1027 | { |
Peter Zijlstra | 89a1e18 | 2010-09-07 17:34:50 +0200 | [diff] [blame] | 1028 | return event->pmu->task_ctx_nr == perf_sw_context; |
Paul Mackerras | 3b6f9e5 | 2009-01-14 21:00:30 +1100 | [diff] [blame] | 1029 | } |
| 1030 | |
Jason Baron | d430d3d | 2011-03-16 17:29:47 -0400 | [diff] [blame] | 1031 | extern struct jump_label_key perf_swevent_enabled[PERF_COUNT_SW_MAX]; |
Peter Zijlstra | f29ac75 | 2009-06-19 18:27:26 +0200 | [diff] [blame] | 1032 | |
Peter Zijlstra | a8b0ca1 | 2011-06-27 14:41:57 +0200 | [diff] [blame] | 1033 | extern void __perf_sw_event(u32, u64, struct pt_regs *, u64); |
Peter Zijlstra | f29ac75 | 2009-06-19 18:27:26 +0200 | [diff] [blame] | 1034 | |
Frederic Weisbecker | b0f82b8 | 2010-05-20 07:47:21 +0200 | [diff] [blame] | 1035 | #ifndef perf_arch_fetch_caller_regs |
Ingo Molnar | e7e7ee2 | 2011-05-04 08:42:29 +0200 | [diff] [blame] | 1036 | static inline void perf_arch_fetch_caller_regs(struct pt_regs *regs, unsigned long ip) { } |
Frederic Weisbecker | b0f82b8 | 2010-05-20 07:47:21 +0200 | [diff] [blame] | 1037 | #endif |
Frederic Weisbecker | 5331d7b | 2010-03-04 21:15:56 +0100 | [diff] [blame] | 1038 | |
| 1039 | /* |
| 1040 | * Take a snapshot of the regs. Skip ip and frame pointer to |
| 1041 | * the nth caller. We only need a few of the regs: |
| 1042 | * - ip for PERF_SAMPLE_IP |
| 1043 | * - cs for user_mode() tests |
| 1044 | * - bp for callchains |
| 1045 | * - eflags, for future purposes, just in case |
| 1046 | */ |
Frederic Weisbecker | b0f82b8 | 2010-05-20 07:47:21 +0200 | [diff] [blame] | 1047 | static inline void perf_fetch_caller_regs(struct pt_regs *regs) |
Frederic Weisbecker | 5331d7b | 2010-03-04 21:15:56 +0100 | [diff] [blame] | 1048 | { |
Frederic Weisbecker | 5331d7b | 2010-03-04 21:15:56 +0100 | [diff] [blame] | 1049 | memset(regs, 0, sizeof(*regs)); |
| 1050 | |
Frederic Weisbecker | b0f82b8 | 2010-05-20 07:47:21 +0200 | [diff] [blame] | 1051 | perf_arch_fetch_caller_regs(regs, CALLER_ADDR0); |
Frederic Weisbecker | 5331d7b | 2010-03-04 21:15:56 +0100 | [diff] [blame] | 1052 | } |
| 1053 | |
Peter Zijlstra | 7e54a5a | 2010-10-14 22:32:45 +0200 | [diff] [blame] | 1054 | static __always_inline void |
Peter Zijlstra | a8b0ca1 | 2011-06-27 14:41:57 +0200 | [diff] [blame] | 1055 | perf_sw_event(u32 event_id, u64 nr, struct pt_regs *regs, u64 addr) |
Frederic Weisbecker | e49a5bd | 2010-03-22 19:40:03 +0100 | [diff] [blame] | 1056 | { |
Peter Zijlstra | 7e54a5a | 2010-10-14 22:32:45 +0200 | [diff] [blame] | 1057 | struct pt_regs hot_regs; |
Frederic Weisbecker | e49a5bd | 2010-03-22 19:40:03 +0100 | [diff] [blame] | 1058 | |
Jason Baron | d430d3d | 2011-03-16 17:29:47 -0400 | [diff] [blame] | 1059 | if (static_branch(&perf_swevent_enabled[event_id])) { |
| 1060 | if (!regs) { |
| 1061 | perf_fetch_caller_regs(&hot_regs); |
| 1062 | regs = &hot_regs; |
| 1063 | } |
Peter Zijlstra | a8b0ca1 | 2011-06-27 14:41:57 +0200 | [diff] [blame] | 1064 | __perf_sw_event(event_id, nr, regs, addr); |
Frederic Weisbecker | e49a5bd | 2010-03-22 19:40:03 +0100 | [diff] [blame] | 1065 | } |
| 1066 | } |
| 1067 | |
Gleb Natapov | b202952 | 2011-11-27 17:59:09 +0200 | [diff] [blame] | 1068 | extern struct jump_label_key_deferred perf_sched_events; |
Peter Zijlstra | ee6dcfa | 2010-11-26 13:49:04 +0100 | [diff] [blame] | 1069 | |
Stephane Eranian | a8d757e | 2011-08-25 15:58:03 +0200 | [diff] [blame] | 1070 | static inline void perf_event_task_sched_in(struct task_struct *prev, |
| 1071 | struct task_struct *task) |
Peter Zijlstra | ee6dcfa | 2010-11-26 13:49:04 +0100 | [diff] [blame] | 1072 | { |
Gleb Natapov | b202952 | 2011-11-27 17:59:09 +0200 | [diff] [blame] | 1073 | if (static_branch(&perf_sched_events.key)) |
Stephane Eranian | a8d757e | 2011-08-25 15:58:03 +0200 | [diff] [blame] | 1074 | __perf_event_task_sched_in(prev, task); |
Peter Zijlstra | ee6dcfa | 2010-11-26 13:49:04 +0100 | [diff] [blame] | 1075 | } |
| 1076 | |
Stephane Eranian | a8d757e | 2011-08-25 15:58:03 +0200 | [diff] [blame] | 1077 | static inline void perf_event_task_sched_out(struct task_struct *prev, |
| 1078 | struct task_struct *next) |
Peter Zijlstra | ee6dcfa | 2010-11-26 13:49:04 +0100 | [diff] [blame] | 1079 | { |
Peter Zijlstra | a8b0ca1 | 2011-06-27 14:41:57 +0200 | [diff] [blame] | 1080 | perf_sw_event(PERF_COUNT_SW_CONTEXT_SWITCHES, 1, NULL, 0); |
Peter Zijlstra | ee6dcfa | 2010-11-26 13:49:04 +0100 | [diff] [blame] | 1081 | |
Gleb Natapov | b202952 | 2011-11-27 17:59:09 +0200 | [diff] [blame] | 1082 | if (static_branch(&perf_sched_events.key)) |
Stephane Eranian | a8d757e | 2011-08-25 15:58:03 +0200 | [diff] [blame] | 1083 | __perf_event_task_sched_out(prev, next); |
Peter Zijlstra | ee6dcfa | 2010-11-26 13:49:04 +0100 | [diff] [blame] | 1084 | } |
| 1085 | |
Eric B Munson | 3af9e85 | 2010-05-18 15:30:49 +0100 | [diff] [blame] | 1086 | extern void perf_event_mmap(struct vm_area_struct *vma); |
Zhang, Yanmin | 39447b3 | 2010-04-19 13:32:41 +0800 | [diff] [blame] | 1087 | extern struct perf_guest_info_callbacks *perf_guest_cbs; |
Zhang, Yanmin | dcf46b9 | 2010-04-20 10:13:58 +0800 | [diff] [blame] | 1088 | extern int perf_register_guest_info_callbacks(struct perf_guest_info_callbacks *callbacks); |
| 1089 | extern int perf_unregister_guest_info_callbacks(struct perf_guest_info_callbacks *callbacks); |
Zhang, Yanmin | 39447b3 | 2010-04-19 13:32:41 +0800 | [diff] [blame] | 1090 | |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 1091 | extern void perf_event_comm(struct task_struct *tsk); |
| 1092 | extern void perf_event_fork(struct task_struct *tsk); |
Peter Zijlstra | 8d1b2d9 | 2009-04-08 15:01:30 +0200 | [diff] [blame] | 1093 | |
Frederic Weisbecker | 56962b4 | 2010-06-30 23:03:51 +0200 | [diff] [blame] | 1094 | /* Callchains */ |
| 1095 | DECLARE_PER_CPU(struct perf_callchain_entry, perf_callchain_entry); |
| 1096 | |
Ingo Molnar | e7e7ee2 | 2011-05-04 08:42:29 +0200 | [diff] [blame] | 1097 | extern void perf_callchain_user(struct perf_callchain_entry *entry, struct pt_regs *regs); |
| 1098 | extern void perf_callchain_kernel(struct perf_callchain_entry *entry, struct pt_regs *regs); |
Frederic Weisbecker | 56962b4 | 2010-06-30 23:03:51 +0200 | [diff] [blame] | 1099 | |
Ingo Molnar | e7e7ee2 | 2011-05-04 08:42:29 +0200 | [diff] [blame] | 1100 | static inline void perf_callchain_store(struct perf_callchain_entry *entry, u64 ip) |
Frederic Weisbecker | 70791ce | 2010-06-29 19:34:05 +0200 | [diff] [blame] | 1101 | { |
| 1102 | if (entry->nr < PERF_MAX_STACK_DEPTH) |
| 1103 | entry->ip[entry->nr++] = ip; |
| 1104 | } |
Peter Zijlstra | 394ee07 | 2009-03-30 19:07:14 +0200 | [diff] [blame] | 1105 | |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 1106 | extern int sysctl_perf_event_paranoid; |
| 1107 | extern int sysctl_perf_event_mlock; |
| 1108 | extern int sysctl_perf_event_sample_rate; |
Peter Zijlstra | 1ccd154 | 2009-04-09 10:53:45 +0200 | [diff] [blame] | 1109 | |
Peter Zijlstra | 163ec43 | 2011-02-16 11:22:34 +0100 | [diff] [blame] | 1110 | extern int perf_proc_update_handler(struct ctl_table *table, int write, |
| 1111 | void __user *buffer, size_t *lenp, |
| 1112 | loff_t *ppos); |
| 1113 | |
Peter Zijlstra | 320ebf0 | 2010-03-02 12:35:37 +0100 | [diff] [blame] | 1114 | static inline bool perf_paranoid_tracepoint_raw(void) |
| 1115 | { |
| 1116 | return sysctl_perf_event_paranoid > -1; |
| 1117 | } |
| 1118 | |
| 1119 | static inline bool perf_paranoid_cpu(void) |
| 1120 | { |
| 1121 | return sysctl_perf_event_paranoid > 0; |
| 1122 | } |
| 1123 | |
| 1124 | static inline bool perf_paranoid_kernel(void) |
| 1125 | { |
| 1126 | return sysctl_perf_event_paranoid > 1; |
| 1127 | } |
| 1128 | |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 1129 | extern void perf_event_init(void); |
Peter Zijlstra | 1c024eca | 2010-05-19 14:02:22 +0200 | [diff] [blame] | 1130 | extern void perf_tp_event(u64 addr, u64 count, void *record, |
| 1131 | int entry_size, struct pt_regs *regs, |
Peter Zijlstra | ecc55f8 | 2010-05-21 15:11:34 +0200 | [diff] [blame] | 1132 | struct hlist_head *head, int rctx); |
Frederic Weisbecker | 24f1e32c | 2009-09-09 19:22:48 +0200 | [diff] [blame] | 1133 | extern void perf_bp_event(struct perf_event *event, void *data); |
Ingo Molnar | 0d905bc | 2009-05-04 19:13:30 +0200 | [diff] [blame] | 1134 | |
Paul Mackerras | 9d23a90 | 2009-05-14 21:48:08 +1000 | [diff] [blame] | 1135 | #ifndef perf_misc_flags |
Ingo Molnar | e7e7ee2 | 2011-05-04 08:42:29 +0200 | [diff] [blame] | 1136 | # define perf_misc_flags(regs) \ |
| 1137 | (user_mode(regs) ? PERF_RECORD_MISC_USER : PERF_RECORD_MISC_KERNEL) |
| 1138 | # define perf_instruction_pointer(regs) instruction_pointer(regs) |
Paul Mackerras | 9d23a90 | 2009-05-14 21:48:08 +1000 | [diff] [blame] | 1139 | #endif |
| 1140 | |
Markus Metzger | 5622f29 | 2009-09-15 13:00:23 +0200 | [diff] [blame] | 1141 | extern int perf_output_begin(struct perf_output_handle *handle, |
Peter Zijlstra | a7ac67e | 2011-06-27 16:47:16 +0200 | [diff] [blame] | 1142 | struct perf_event *event, unsigned int size); |
Markus Metzger | 5622f29 | 2009-09-15 13:00:23 +0200 | [diff] [blame] | 1143 | extern void perf_output_end(struct perf_output_handle *handle); |
| 1144 | extern void perf_output_copy(struct perf_output_handle *handle, |
| 1145 | const void *buf, unsigned int len); |
Peter Zijlstra | 4ed7c92 | 2009-11-23 11:37:29 +0100 | [diff] [blame] | 1146 | extern int perf_swevent_get_recursion_context(void); |
| 1147 | extern void perf_swevent_put_recursion_context(int rctx); |
Frederic Weisbecker | 44234ad | 2009-12-09 09:25:48 +0100 | [diff] [blame] | 1148 | extern void perf_event_enable(struct perf_event *event); |
| 1149 | extern void perf_event_disable(struct perf_event *event); |
Peter Zijlstra | e9d2b06 | 2010-09-17 11:28:50 +0200 | [diff] [blame] | 1150 | extern void perf_event_task_tick(void); |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 1151 | #else |
| 1152 | static inline void |
Stephane Eranian | a8d757e | 2011-08-25 15:58:03 +0200 | [diff] [blame] | 1153 | perf_event_task_sched_in(struct task_struct *prev, |
| 1154 | struct task_struct *task) { } |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 1155 | static inline void |
Stephane Eranian | a8d757e | 2011-08-25 15:58:03 +0200 | [diff] [blame] | 1156 | perf_event_task_sched_out(struct task_struct *prev, |
| 1157 | struct task_struct *next) { } |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 1158 | static inline int perf_event_init_task(struct task_struct *child) { return 0; } |
| 1159 | static inline void perf_event_exit_task(struct task_struct *child) { } |
| 1160 | static inline void perf_event_free_task(struct task_struct *task) { } |
Peter Zijlstra | 4e231c7 | 2010-09-09 21:01:59 +0200 | [diff] [blame] | 1161 | static inline void perf_event_delayed_put(struct task_struct *task) { } |
Ingo Molnar | 57c0c15 | 2009-09-21 12:20:38 +0200 | [diff] [blame] | 1162 | static inline void perf_event_print_debug(void) { } |
Ingo Molnar | 57c0c15 | 2009-09-21 12:20:38 +0200 | [diff] [blame] | 1163 | static inline int perf_event_task_disable(void) { return -EINVAL; } |
| 1164 | static inline int perf_event_task_enable(void) { return -EINVAL; } |
Avi Kivity | 26ca5c1 | 2011-06-29 18:42:37 +0300 | [diff] [blame] | 1165 | static inline int perf_event_refresh(struct perf_event *event, int refresh) |
| 1166 | { |
| 1167 | return -EINVAL; |
| 1168 | } |
Peter Zijlstra | 15dbf27 | 2009-03-13 12:21:32 +0100 | [diff] [blame] | 1169 | |
Peter Zijlstra | 925d519 | 2009-03-30 19:07:02 +0200 | [diff] [blame] | 1170 | static inline void |
Peter Zijlstra | a8b0ca1 | 2011-06-27 14:41:57 +0200 | [diff] [blame] | 1171 | perf_sw_event(u32 event_id, u64 nr, struct pt_regs *regs, u64 addr) { } |
Frederic Weisbecker | 24f1e32c | 2009-09-09 19:22:48 +0200 | [diff] [blame] | 1172 | static inline void |
Ingo Molnar | 184f412 | 2010-01-27 08:39:39 +0100 | [diff] [blame] | 1173 | perf_bp_event(struct perf_event *event, void *data) { } |
Peter Zijlstra | 0a4a939 | 2009-03-30 19:07:05 +0200 | [diff] [blame] | 1174 | |
Zhang, Yanmin | 39447b3 | 2010-04-19 13:32:41 +0800 | [diff] [blame] | 1175 | static inline int perf_register_guest_info_callbacks |
Ingo Molnar | e7e7ee2 | 2011-05-04 08:42:29 +0200 | [diff] [blame] | 1176 | (struct perf_guest_info_callbacks *callbacks) { return 0; } |
Zhang, Yanmin | 39447b3 | 2010-04-19 13:32:41 +0800 | [diff] [blame] | 1177 | static inline int perf_unregister_guest_info_callbacks |
Ingo Molnar | e7e7ee2 | 2011-05-04 08:42:29 +0200 | [diff] [blame] | 1178 | (struct perf_guest_info_callbacks *callbacks) { return 0; } |
Zhang, Yanmin | 39447b3 | 2010-04-19 13:32:41 +0800 | [diff] [blame] | 1179 | |
Ingo Molnar | 57c0c15 | 2009-09-21 12:20:38 +0200 | [diff] [blame] | 1180 | static inline void perf_event_mmap(struct vm_area_struct *vma) { } |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 1181 | static inline void perf_event_comm(struct task_struct *tsk) { } |
| 1182 | static inline void perf_event_fork(struct task_struct *tsk) { } |
| 1183 | static inline void perf_event_init(void) { } |
Ingo Molnar | 184f412 | 2010-01-27 08:39:39 +0100 | [diff] [blame] | 1184 | static inline int perf_swevent_get_recursion_context(void) { return -1; } |
Peter Zijlstra | 4ed7c92 | 2009-11-23 11:37:29 +0100 | [diff] [blame] | 1185 | static inline void perf_swevent_put_recursion_context(int rctx) { } |
Frederic Weisbecker | 44234ad | 2009-12-09 09:25:48 +0100 | [diff] [blame] | 1186 | static inline void perf_event_enable(struct perf_event *event) { } |
| 1187 | static inline void perf_event_disable(struct perf_event *event) { } |
Peter Zijlstra | e9d2b06 | 2010-09-17 11:28:50 +0200 | [diff] [blame] | 1188 | static inline void perf_event_task_tick(void) { } |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 1189 | #endif |
| 1190 | |
Ingo Molnar | e7e7ee2 | 2011-05-04 08:42:29 +0200 | [diff] [blame] | 1191 | #define perf_output_put(handle, x) perf_output_copy((handle), &(x), sizeof(x)) |
Markus Metzger | 5622f29 | 2009-09-15 13:00:23 +0200 | [diff] [blame] | 1192 | |
Peter Zijlstra | 3f6da39 | 2010-03-05 13:01:18 +0100 | [diff] [blame] | 1193 | /* |
| 1194 | * This has to have a higher priority than migration_notifier in sched.c. |
| 1195 | */ |
Ingo Molnar | e7e7ee2 | 2011-05-04 08:42:29 +0200 | [diff] [blame] | 1196 | #define perf_cpu_notifier(fn) \ |
| 1197 | do { \ |
| 1198 | static struct notifier_block fn##_nb __cpuinitdata = \ |
| 1199 | { .notifier_call = fn, .priority = CPU_PRI_PERF }; \ |
| 1200 | fn(&fn##_nb, (unsigned long)CPU_UP_PREPARE, \ |
| 1201 | (void *)(unsigned long)smp_processor_id()); \ |
| 1202 | fn(&fn##_nb, (unsigned long)CPU_STARTING, \ |
| 1203 | (void *)(unsigned long)smp_processor_id()); \ |
| 1204 | fn(&fn##_nb, (unsigned long)CPU_ONLINE, \ |
| 1205 | (void *)(unsigned long)smp_processor_id()); \ |
| 1206 | register_cpu_notifier(&fn##_nb); \ |
Peter Zijlstra | 3f6da39 | 2010-03-05 13:01:18 +0100 | [diff] [blame] | 1207 | } while (0) |
| 1208 | |
Paul Mackerras | f3dfd26 | 2009-02-26 22:43:46 +1100 | [diff] [blame] | 1209 | #endif /* __KERNEL__ */ |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 1210 | #endif /* _LINUX_PERF_EVENT_H */ |