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> |
| 5 | * Copyright (C) 2008-2009, Red Hat, Inc., Ingo Molnar |
| 6 | * Copyright (C) 2008-2009, 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 | 9f66a38 | 2008-12-10 12:33:23 +0100 | [diff] [blame] | 55 | |
Ingo Molnar | a308444 | 2009-06-11 14:44:26 +0200 | [diff] [blame] | 56 | PERF_COUNT_HW_MAX, /* non-ABI */ |
Peter Zijlstra | b8e8351 | 2009-03-19 20:26:18 +0100 | [diff] [blame] | 57 | }; |
Ingo Molnar | 6c594c2 | 2008-12-14 12:34:15 +0100 | [diff] [blame] | 58 | |
Peter Zijlstra | b8e8351 | 2009-03-19 20:26:18 +0100 | [diff] [blame] | 59 | /* |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 60 | * Generalized hardware cache events: |
Ingo Molnar | 8326f44 | 2009-06-05 20:22:46 +0200 | [diff] [blame] | 61 | * |
Peter Zijlstra | 8be6e8f | 2009-06-11 14:19:11 +0200 | [diff] [blame] | 62 | * { L1-D, L1-I, LLC, ITLB, DTLB, BPU } x |
Ingo Molnar | 8326f44 | 2009-06-05 20:22:46 +0200 | [diff] [blame] | 63 | * { read, write, prefetch } x |
| 64 | * { accesses, misses } |
| 65 | */ |
Peter Zijlstra | 1c432d8 | 2009-06-11 13:19:29 +0200 | [diff] [blame] | 66 | enum perf_hw_cache_id { |
Ingo Molnar | a308444 | 2009-06-11 14:44:26 +0200 | [diff] [blame] | 67 | PERF_COUNT_HW_CACHE_L1D = 0, |
| 68 | PERF_COUNT_HW_CACHE_L1I = 1, |
| 69 | PERF_COUNT_HW_CACHE_LL = 2, |
| 70 | PERF_COUNT_HW_CACHE_DTLB = 3, |
| 71 | PERF_COUNT_HW_CACHE_ITLB = 4, |
| 72 | PERF_COUNT_HW_CACHE_BPU = 5, |
Ingo Molnar | 8326f44 | 2009-06-05 20:22:46 +0200 | [diff] [blame] | 73 | |
Ingo Molnar | a308444 | 2009-06-11 14:44:26 +0200 | [diff] [blame] | 74 | PERF_COUNT_HW_CACHE_MAX, /* non-ABI */ |
Ingo Molnar | 8326f44 | 2009-06-05 20:22:46 +0200 | [diff] [blame] | 75 | }; |
| 76 | |
Peter Zijlstra | 1c432d8 | 2009-06-11 13:19:29 +0200 | [diff] [blame] | 77 | enum perf_hw_cache_op_id { |
Ingo Molnar | a308444 | 2009-06-11 14:44:26 +0200 | [diff] [blame] | 78 | PERF_COUNT_HW_CACHE_OP_READ = 0, |
| 79 | PERF_COUNT_HW_CACHE_OP_WRITE = 1, |
| 80 | PERF_COUNT_HW_CACHE_OP_PREFETCH = 2, |
Ingo Molnar | 8326f44 | 2009-06-05 20:22:46 +0200 | [diff] [blame] | 81 | |
Ingo Molnar | a308444 | 2009-06-11 14:44:26 +0200 | [diff] [blame] | 82 | PERF_COUNT_HW_CACHE_OP_MAX, /* non-ABI */ |
Ingo Molnar | 8326f44 | 2009-06-05 20:22:46 +0200 | [diff] [blame] | 83 | }; |
| 84 | |
Peter Zijlstra | 1c432d8 | 2009-06-11 13:19:29 +0200 | [diff] [blame] | 85 | enum perf_hw_cache_op_result_id { |
| 86 | PERF_COUNT_HW_CACHE_RESULT_ACCESS = 0, |
| 87 | PERF_COUNT_HW_CACHE_RESULT_MISS = 1, |
Ingo Molnar | 8326f44 | 2009-06-05 20:22:46 +0200 | [diff] [blame] | 88 | |
Ingo Molnar | a308444 | 2009-06-11 14:44:26 +0200 | [diff] [blame] | 89 | PERF_COUNT_HW_CACHE_RESULT_MAX, /* non-ABI */ |
Ingo Molnar | 8326f44 | 2009-06-05 20:22:46 +0200 | [diff] [blame] | 90 | }; |
| 91 | |
| 92 | /* |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 93 | * Special "software" events provided by the kernel, even if the hardware |
| 94 | * does not support performance events. These events measure various |
Peter Zijlstra | b8e8351 | 2009-03-19 20:26:18 +0100 | [diff] [blame] | 95 | * physical and sw events of the kernel (and allow the profiling of them as |
| 96 | * well): |
| 97 | */ |
Peter Zijlstra | 1c432d8 | 2009-06-11 13:19:29 +0200 | [diff] [blame] | 98 | enum perf_sw_ids { |
Ingo Molnar | a308444 | 2009-06-11 14:44:26 +0200 | [diff] [blame] | 99 | PERF_COUNT_SW_CPU_CLOCK = 0, |
| 100 | PERF_COUNT_SW_TASK_CLOCK = 1, |
| 101 | PERF_COUNT_SW_PAGE_FAULTS = 2, |
| 102 | PERF_COUNT_SW_CONTEXT_SWITCHES = 3, |
| 103 | PERF_COUNT_SW_CPU_MIGRATIONS = 4, |
| 104 | PERF_COUNT_SW_PAGE_FAULTS_MIN = 5, |
| 105 | PERF_COUNT_SW_PAGE_FAULTS_MAJ = 6, |
Anton Blanchard | f7d7986 | 2009-10-18 01:09:29 +0000 | [diff] [blame] | 106 | PERF_COUNT_SW_ALIGNMENT_FAULTS = 7, |
| 107 | PERF_COUNT_SW_EMULATION_FAULTS = 8, |
Ingo Molnar | 6c594c2 | 2008-12-14 12:34:15 +0100 | [diff] [blame] | 108 | |
Ingo Molnar | a308444 | 2009-06-11 14:44:26 +0200 | [diff] [blame] | 109 | PERF_COUNT_SW_MAX, /* non-ABI */ |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 110 | }; |
| 111 | |
Ingo Molnar | 9f66a38 | 2008-12-10 12:33:23 +0100 | [diff] [blame] | 112 | /* |
Peter Zijlstra | 0d48696 | 2009-06-02 19:22:16 +0200 | [diff] [blame] | 113 | * Bits that can be set in attr.sample_type to request information |
Peter Zijlstra | 8a057d8 | 2009-04-02 11:11:59 +0200 | [diff] [blame] | 114 | * in the overflow packets. |
| 115 | */ |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 116 | enum perf_event_sample_format { |
Ingo Molnar | a308444 | 2009-06-11 14:44:26 +0200 | [diff] [blame] | 117 | PERF_SAMPLE_IP = 1U << 0, |
| 118 | PERF_SAMPLE_TID = 1U << 1, |
| 119 | PERF_SAMPLE_TIME = 1U << 2, |
| 120 | PERF_SAMPLE_ADDR = 1U << 3, |
Peter Zijlstra | 3dab77f | 2009-08-13 11:47:53 +0200 | [diff] [blame] | 121 | PERF_SAMPLE_READ = 1U << 4, |
Ingo Molnar | a308444 | 2009-06-11 14:44:26 +0200 | [diff] [blame] | 122 | PERF_SAMPLE_CALLCHAIN = 1U << 5, |
| 123 | PERF_SAMPLE_ID = 1U << 6, |
| 124 | PERF_SAMPLE_CPU = 1U << 7, |
| 125 | PERF_SAMPLE_PERIOD = 1U << 8, |
Peter Zijlstra | 7f453c2 | 2009-07-21 13:19:40 +0200 | [diff] [blame] | 126 | PERF_SAMPLE_STREAM_ID = 1U << 9, |
Frederic Weisbecker | 3a43ce6 | 2009-08-08 04:26:37 +0200 | [diff] [blame] | 127 | PERF_SAMPLE_RAW = 1U << 10, |
Peter Zijlstra | 974802e | 2009-06-12 12:46:55 +0200 | [diff] [blame] | 128 | |
Frederic Weisbecker | f413cdb | 2009-08-07 01:25:54 +0200 | [diff] [blame] | 129 | PERF_SAMPLE_MAX = 1U << 11, /* non-ABI */ |
Peter Zijlstra | 8a057d8 | 2009-04-02 11:11:59 +0200 | [diff] [blame] | 130 | }; |
| 131 | |
| 132 | /* |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 133 | * 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] | 134 | * as specified by attr.read_format: |
| 135 | * |
| 136 | * struct read_format { |
Ingo Molnar | 57c0c15 | 2009-09-21 12:20:38 +0200 | [diff] [blame] | 137 | * { u64 value; |
| 138 | * { u64 time_enabled; } && PERF_FORMAT_ENABLED |
| 139 | * { u64 time_running; } && PERF_FORMAT_RUNNING |
| 140 | * { u64 id; } && PERF_FORMAT_ID |
| 141 | * } && !PERF_FORMAT_GROUP |
Peter Zijlstra | 3dab77f | 2009-08-13 11:47:53 +0200 | [diff] [blame] | 142 | * |
Ingo Molnar | 57c0c15 | 2009-09-21 12:20:38 +0200 | [diff] [blame] | 143 | * { u64 nr; |
| 144 | * { u64 time_enabled; } && PERF_FORMAT_ENABLED |
| 145 | * { u64 time_running; } && PERF_FORMAT_RUNNING |
| 146 | * { u64 value; |
| 147 | * { u64 id; } && PERF_FORMAT_ID |
| 148 | * } cntr[nr]; |
| 149 | * } && PERF_FORMAT_GROUP |
Peter Zijlstra | 3dab77f | 2009-08-13 11:47:53 +0200 | [diff] [blame] | 150 | * }; |
Paul Mackerras | 53cfbf5 | 2009-03-25 22:46:58 +1100 | [diff] [blame] | 151 | */ |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 152 | enum perf_event_read_format { |
Ingo Molnar | a308444 | 2009-06-11 14:44:26 +0200 | [diff] [blame] | 153 | PERF_FORMAT_TOTAL_TIME_ENABLED = 1U << 0, |
| 154 | PERF_FORMAT_TOTAL_TIME_RUNNING = 1U << 1, |
| 155 | PERF_FORMAT_ID = 1U << 2, |
Peter Zijlstra | 3dab77f | 2009-08-13 11:47:53 +0200 | [diff] [blame] | 156 | PERF_FORMAT_GROUP = 1U << 3, |
Peter Zijlstra | 974802e | 2009-06-12 12:46:55 +0200 | [diff] [blame] | 157 | |
Ingo Molnar | 57c0c15 | 2009-09-21 12:20:38 +0200 | [diff] [blame] | 158 | PERF_FORMAT_MAX = 1U << 4, /* non-ABI */ |
Paul Mackerras | 53cfbf5 | 2009-03-25 22:46:58 +1100 | [diff] [blame] | 159 | }; |
| 160 | |
Peter Zijlstra | 974802e | 2009-06-12 12:46:55 +0200 | [diff] [blame] | 161 | #define PERF_ATTR_SIZE_VER0 64 /* sizeof first published struct */ |
| 162 | |
Paul Mackerras | 53cfbf5 | 2009-03-25 22:46:58 +1100 | [diff] [blame] | 163 | /* |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 164 | * Hardware event_id to monitor via a performance monitoring event: |
Ingo Molnar | 9f66a38 | 2008-12-10 12:33:23 +0100 | [diff] [blame] | 165 | */ |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 166 | struct perf_event_attr { |
Peter Zijlstra | 974802e | 2009-06-12 12:46:55 +0200 | [diff] [blame] | 167 | |
Peter Zijlstra | f4a2deb4 | 2009-03-23 18:22:06 +0100 | [diff] [blame] | 168 | /* |
Ingo Molnar | a21ca2c | 2009-06-06 09:58:57 +0200 | [diff] [blame] | 169 | * Major type: hardware/software/tracepoint/etc. |
| 170 | */ |
| 171 | __u32 type; |
Peter Zijlstra | 974802e | 2009-06-12 12:46:55 +0200 | [diff] [blame] | 172 | |
| 173 | /* |
| 174 | * Size of the attr structure, for fwd/bwd compat. |
| 175 | */ |
| 176 | __u32 size; |
Ingo Molnar | a21ca2c | 2009-06-06 09:58:57 +0200 | [diff] [blame] | 177 | |
| 178 | /* |
| 179 | * Type specific configuration information. |
Peter Zijlstra | f4a2deb4 | 2009-03-23 18:22:06 +0100 | [diff] [blame] | 180 | */ |
| 181 | __u64 config; |
Ingo Molnar | 9f66a38 | 2008-12-10 12:33:23 +0100 | [diff] [blame] | 182 | |
Peter Zijlstra | 60db5e0 | 2009-05-15 15:19:28 +0200 | [diff] [blame] | 183 | union { |
Peter Zijlstra | b23f332 | 2009-06-02 15:13:03 +0200 | [diff] [blame] | 184 | __u64 sample_period; |
| 185 | __u64 sample_freq; |
Peter Zijlstra | 60db5e0 | 2009-05-15 15:19:28 +0200 | [diff] [blame] | 186 | }; |
| 187 | |
Peter Zijlstra | b23f332 | 2009-06-02 15:13:03 +0200 | [diff] [blame] | 188 | __u64 sample_type; |
| 189 | __u64 read_format; |
Ingo Molnar | 9f66a38 | 2008-12-10 12:33:23 +0100 | [diff] [blame] | 190 | |
Paul Mackerras | 2743a5b | 2009-03-04 20:36:51 +1100 | [diff] [blame] | 191 | __u64 disabled : 1, /* off by default */ |
Paul Mackerras | 0475f9e | 2009-02-11 14:35:35 +1100 | [diff] [blame] | 192 | inherit : 1, /* children inherit it */ |
| 193 | pinned : 1, /* must always be on PMU */ |
| 194 | exclusive : 1, /* only group on PMU */ |
| 195 | exclude_user : 1, /* don't count user */ |
| 196 | exclude_kernel : 1, /* ditto kernel */ |
| 197 | exclude_hv : 1, /* ditto hypervisor */ |
Paul Mackerras | 2743a5b | 2009-03-04 20:36:51 +1100 | [diff] [blame] | 198 | exclude_idle : 1, /* don't count when idle */ |
Peter Zijlstra | 0a4a939 | 2009-03-30 19:07:05 +0200 | [diff] [blame] | 199 | mmap : 1, /* include mmap data */ |
Peter Zijlstra | 8d1b2d9 | 2009-04-08 15:01:30 +0200 | [diff] [blame] | 200 | comm : 1, /* include comm data */ |
Peter Zijlstra | 60db5e0 | 2009-05-15 15:19:28 +0200 | [diff] [blame] | 201 | freq : 1, /* use freq, not period */ |
Peter Zijlstra | bfbd338 | 2009-06-24 21:11:59 +0200 | [diff] [blame] | 202 | inherit_stat : 1, /* per task counts */ |
Paul Mackerras | 57e7986 | 2009-06-30 16:07:19 +1000 | [diff] [blame] | 203 | enable_on_exec : 1, /* next exec enables */ |
Peter Zijlstra | 9f498cc | 2009-07-23 14:46:33 +0200 | [diff] [blame] | 204 | task : 1, /* trace fork/exit */ |
Peter Zijlstra | 2667de8 | 2009-09-17 19:01:10 +0200 | [diff] [blame] | 205 | watermark : 1, /* wakeup_watermark */ |
Paul Mackerras | 3b6f9e5 | 2009-01-14 21:00:30 +1100 | [diff] [blame] | 206 | |
Peter Zijlstra | 2667de8 | 2009-09-17 19:01:10 +0200 | [diff] [blame] | 207 | __reserved_1 : 49; |
Paul Mackerras | 2743a5b | 2009-03-04 20:36:51 +1100 | [diff] [blame] | 208 | |
Peter Zijlstra | 2667de8 | 2009-09-17 19:01:10 +0200 | [diff] [blame] | 209 | union { |
| 210 | __u32 wakeup_events; /* wakeup every n events */ |
| 211 | __u32 wakeup_watermark; /* bytes before wakeup */ |
| 212 | }; |
Frederic Weisbecker | 24f1e32c | 2009-09-09 19:22:48 +0200 | [diff] [blame] | 213 | |
Peter Zijlstra | f13c12c | 2009-12-15 19:43:11 +0100 | [diff] [blame] | 214 | __u32 bp_type; |
Mahesh Salgaonkar | cd75764 | 2010-01-30 10:25:18 +0530 | [diff] [blame] | 215 | __u64 bp_addr; |
| 216 | __u64 bp_len; |
Thomas Gleixner | eab656a | 2008-12-08 19:26:59 +0100 | [diff] [blame] | 217 | }; |
| 218 | |
Ingo Molnar | 9f66a38 | 2008-12-10 12:33:23 +0100 | [diff] [blame] | 219 | /* |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 220 | * Ioctls that can be done on a perf event fd: |
Paul Mackerras | d859e29 | 2009-01-17 18:10:22 +1100 | [diff] [blame] | 221 | */ |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 222 | #define PERF_EVENT_IOC_ENABLE _IO ('$', 0) |
Ingo Molnar | 57c0c15 | 2009-09-21 12:20:38 +0200 | [diff] [blame] | 223 | #define PERF_EVENT_IOC_DISABLE _IO ('$', 1) |
| 224 | #define PERF_EVENT_IOC_REFRESH _IO ('$', 2) |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 225 | #define PERF_EVENT_IOC_RESET _IO ('$', 3) |
Arjan van de Ven | 4c49b12 | 2009-11-13 21:47:33 -0800 | [diff] [blame] | 226 | #define PERF_EVENT_IOC_PERIOD _IOW('$', 4, __u64) |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 227 | #define PERF_EVENT_IOC_SET_OUTPUT _IO ('$', 5) |
Li Zefan | 6fb2915 | 2009-10-15 11:21:42 +0800 | [diff] [blame] | 228 | #define PERF_EVENT_IOC_SET_FILTER _IOW('$', 6, char *) |
Peter Zijlstra | 3df5eda | 2009-05-08 18:52:22 +0200 | [diff] [blame] | 229 | |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 230 | enum perf_event_ioc_flags { |
Peter Zijlstra | 3df5eda | 2009-05-08 18:52:22 +0200 | [diff] [blame] | 231 | PERF_IOC_FLAG_GROUP = 1U << 0, |
| 232 | }; |
Paul Mackerras | d859e29 | 2009-01-17 18:10:22 +1100 | [diff] [blame] | 233 | |
Paul Mackerras | 37d8182 | 2009-03-23 18:22:08 +0100 | [diff] [blame] | 234 | /* |
| 235 | * Structure of the page that can be mapped via mmap |
| 236 | */ |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 237 | struct perf_event_mmap_page { |
Paul Mackerras | 37d8182 | 2009-03-23 18:22:08 +0100 | [diff] [blame] | 238 | __u32 version; /* version number of this structure */ |
| 239 | __u32 compat_version; /* lowest version this is compat with */ |
Peter Zijlstra | 38ff667 | 2009-03-30 19:07:03 +0200 | [diff] [blame] | 240 | |
| 241 | /* |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 242 | * Bits needed to read the hw events in user-space. |
Peter Zijlstra | 38ff667 | 2009-03-30 19:07:03 +0200 | [diff] [blame] | 243 | * |
Peter Zijlstra | 92f22a3 | 2009-04-02 11:12:04 +0200 | [diff] [blame] | 244 | * u32 seq; |
| 245 | * s64 count; |
Peter Zijlstra | 38ff667 | 2009-03-30 19:07:03 +0200 | [diff] [blame] | 246 | * |
Peter Zijlstra | a2e87d0 | 2009-04-06 11:44:59 +0200 | [diff] [blame] | 247 | * do { |
| 248 | * seq = pc->lock; |
Peter Zijlstra | 38ff667 | 2009-03-30 19:07:03 +0200 | [diff] [blame] | 249 | * |
Peter Zijlstra | a2e87d0 | 2009-04-06 11:44:59 +0200 | [diff] [blame] | 250 | * barrier() |
| 251 | * if (pc->index) { |
| 252 | * count = pmc_read(pc->index - 1); |
| 253 | * count += pc->offset; |
| 254 | * } else |
| 255 | * goto regular_read; |
Peter Zijlstra | 38ff667 | 2009-03-30 19:07:03 +0200 | [diff] [blame] | 256 | * |
Peter Zijlstra | a2e87d0 | 2009-04-06 11:44:59 +0200 | [diff] [blame] | 257 | * barrier(); |
| 258 | * } while (pc->lock != seq); |
Peter Zijlstra | 38ff667 | 2009-03-30 19:07:03 +0200 | [diff] [blame] | 259 | * |
Peter Zijlstra | 92f22a3 | 2009-04-02 11:12:04 +0200 | [diff] [blame] | 260 | * NOTE: for obvious reason this only works on self-monitoring |
| 261 | * processes. |
Peter Zijlstra | 38ff667 | 2009-03-30 19:07:03 +0200 | [diff] [blame] | 262 | */ |
Paul Mackerras | 37d8182 | 2009-03-23 18:22:08 +0100 | [diff] [blame] | 263 | __u32 lock; /* seqlock for synchronization */ |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 264 | __u32 index; /* hardware event identifier */ |
| 265 | __s64 offset; /* add to hardware event value */ |
| 266 | __u64 time_enabled; /* time event active */ |
| 267 | __u64 time_running; /* time event on cpu */ |
Peter Zijlstra | 7b732a7 | 2009-03-23 18:22:10 +0100 | [diff] [blame] | 268 | |
Peter Zijlstra | 41f9533 | 2009-06-23 17:55:18 +0200 | [diff] [blame] | 269 | /* |
| 270 | * Hole for extension of the self monitor capabilities |
| 271 | */ |
| 272 | |
Peter Zijlstra | 7f8b4e4 | 2009-06-22 14:34:35 +0200 | [diff] [blame] | 273 | __u64 __reserved[123]; /* align to 1k */ |
Peter Zijlstra | 41f9533 | 2009-06-23 17:55:18 +0200 | [diff] [blame] | 274 | |
Peter Zijlstra | 38ff667 | 2009-03-30 19:07:03 +0200 | [diff] [blame] | 275 | /* |
| 276 | * Control data for the mmap() data buffer. |
| 277 | * |
Peter Zijlstra | 43a21ea | 2009-03-25 19:39:37 +0100 | [diff] [blame] | 278 | * User-space reading the @data_head value should issue an rmb(), on |
| 279 | * SMP capable platforms, after reading this value -- see |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 280 | * perf_event_wakeup(). |
Peter Zijlstra | 43a21ea | 2009-03-25 19:39:37 +0100 | [diff] [blame] | 281 | * |
| 282 | * When the mapping is PROT_WRITE the @data_tail value should be |
| 283 | * written by userspace to reflect the last read data. In this case |
| 284 | * the kernel will not over-write unread data. |
Peter Zijlstra | 38ff667 | 2009-03-30 19:07:03 +0200 | [diff] [blame] | 285 | */ |
Peter Zijlstra | 8e3747c | 2009-06-02 16:16:02 +0200 | [diff] [blame] | 286 | __u64 data_head; /* head in the data section */ |
Peter Zijlstra | 43a21ea | 2009-03-25 19:39:37 +0100 | [diff] [blame] | 287 | __u64 data_tail; /* user-space written tail */ |
Paul Mackerras | 37d8182 | 2009-03-23 18:22:08 +0100 | [diff] [blame] | 288 | }; |
| 289 | |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 290 | #define PERF_RECORD_MISC_CPUMODE_MASK (3 << 0) |
Ingo Molnar | 184f412 | 2010-01-27 08:39:39 +0100 | [diff] [blame] | 291 | #define PERF_RECORD_MISC_CPUMODE_UNKNOWN (0 << 0) |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 292 | #define PERF_RECORD_MISC_KERNEL (1 << 0) |
| 293 | #define PERF_RECORD_MISC_USER (2 << 0) |
| 294 | #define PERF_RECORD_MISC_HYPERVISOR (3 << 0) |
Peter Zijlstra | 6fab019 | 2009-04-08 15:01:26 +0200 | [diff] [blame] | 295 | |
Peter Zijlstra | 5c14819 | 2009-03-25 12:30:23 +0100 | [diff] [blame] | 296 | struct perf_event_header { |
| 297 | __u32 type; |
Peter Zijlstra | 6fab019 | 2009-04-08 15:01:26 +0200 | [diff] [blame] | 298 | __u16 misc; |
| 299 | __u16 size; |
Peter Zijlstra | 5c14819 | 2009-03-25 12:30:23 +0100 | [diff] [blame] | 300 | }; |
| 301 | |
| 302 | enum perf_event_type { |
Peter Zijlstra | 5ed0041 | 2009-03-30 19:07:12 +0200 | [diff] [blame] | 303 | |
Peter Zijlstra | 0c593b3 | 2009-04-06 11:45:08 +0200 | [diff] [blame] | 304 | /* |
| 305 | * The MMAP events record the PROT_EXEC mappings so that we can |
| 306 | * correlate userspace IPs to code. They have the following structure: |
| 307 | * |
| 308 | * struct { |
Ingo Molnar | 0127c3e | 2009-05-25 22:03:26 +0200 | [diff] [blame] | 309 | * struct perf_event_header header; |
Peter Zijlstra | 0c593b3 | 2009-04-06 11:45:08 +0200 | [diff] [blame] | 310 | * |
Ingo Molnar | 0127c3e | 2009-05-25 22:03:26 +0200 | [diff] [blame] | 311 | * u32 pid, tid; |
| 312 | * u64 addr; |
| 313 | * u64 len; |
| 314 | * u64 pgoff; |
| 315 | * char filename[]; |
Peter Zijlstra | 0c593b3 | 2009-04-06 11:45:08 +0200 | [diff] [blame] | 316 | * }; |
| 317 | */ |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 318 | PERF_RECORD_MMAP = 1, |
Peter Zijlstra | ea5d20c | 2009-03-25 12:30:25 +0100 | [diff] [blame] | 319 | |
Peter Zijlstra | 8a057d8 | 2009-04-02 11:11:59 +0200 | [diff] [blame] | 320 | /* |
Peter Zijlstra | 8d1b2d9 | 2009-04-08 15:01:30 +0200 | [diff] [blame] | 321 | * struct { |
Ingo Molnar | 57c0c15 | 2009-09-21 12:20:38 +0200 | [diff] [blame] | 322 | * struct perf_event_header header; |
| 323 | * u64 id; |
| 324 | * u64 lost; |
Peter Zijlstra | 43a21ea | 2009-03-25 19:39:37 +0100 | [diff] [blame] | 325 | * }; |
| 326 | */ |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 327 | PERF_RECORD_LOST = 2, |
Peter Zijlstra | 43a21ea | 2009-03-25 19:39:37 +0100 | [diff] [blame] | 328 | |
| 329 | /* |
| 330 | * struct { |
Ingo Molnar | 0127c3e | 2009-05-25 22:03:26 +0200 | [diff] [blame] | 331 | * struct perf_event_header header; |
Peter Zijlstra | 8d1b2d9 | 2009-04-08 15:01:30 +0200 | [diff] [blame] | 332 | * |
Ingo Molnar | 0127c3e | 2009-05-25 22:03:26 +0200 | [diff] [blame] | 333 | * u32 pid, tid; |
| 334 | * char comm[]; |
Peter Zijlstra | 8d1b2d9 | 2009-04-08 15:01:30 +0200 | [diff] [blame] | 335 | * }; |
| 336 | */ |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 337 | PERF_RECORD_COMM = 3, |
Peter Zijlstra | 8d1b2d9 | 2009-04-08 15:01:30 +0200 | [diff] [blame] | 338 | |
| 339 | /* |
Peter Zijlstra | 26b119b | 2009-05-20 12:21:20 +0200 | [diff] [blame] | 340 | * struct { |
Ingo Molnar | 0127c3e | 2009-05-25 22:03:26 +0200 | [diff] [blame] | 341 | * struct perf_event_header header; |
Peter Zijlstra | 9f498cc | 2009-07-23 14:46:33 +0200 | [diff] [blame] | 342 | * u32 pid, ppid; |
| 343 | * u32 tid, ptid; |
Arjan van de Ven | 393b2ad | 2009-09-12 07:52:47 +0200 | [diff] [blame] | 344 | * u64 time; |
Peter Zijlstra | 9f498cc | 2009-07-23 14:46:33 +0200 | [diff] [blame] | 345 | * }; |
| 346 | */ |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 347 | PERF_RECORD_EXIT = 4, |
Peter Zijlstra | 9f498cc | 2009-07-23 14:46:33 +0200 | [diff] [blame] | 348 | |
| 349 | /* |
| 350 | * struct { |
| 351 | * struct perf_event_header header; |
Ingo Molnar | 0127c3e | 2009-05-25 22:03:26 +0200 | [diff] [blame] | 352 | * u64 time; |
Peter Zijlstra | 689802b | 2009-06-05 15:05:43 +0200 | [diff] [blame] | 353 | * u64 id; |
Peter Zijlstra | 7f453c2 | 2009-07-21 13:19:40 +0200 | [diff] [blame] | 354 | * u64 stream_id; |
Peter Zijlstra | a78ac32 | 2009-05-25 17:39:05 +0200 | [diff] [blame] | 355 | * }; |
| 356 | */ |
Ingo Molnar | 184f412 | 2010-01-27 08:39:39 +0100 | [diff] [blame] | 357 | PERF_RECORD_THROTTLE = 5, |
| 358 | PERF_RECORD_UNTHROTTLE = 6, |
Peter Zijlstra | a78ac32 | 2009-05-25 17:39:05 +0200 | [diff] [blame] | 359 | |
| 360 | /* |
Peter Zijlstra | 60313eb | 2009-06-04 16:53:44 +0200 | [diff] [blame] | 361 | * struct { |
Ingo Molnar | a21ca2c | 2009-06-06 09:58:57 +0200 | [diff] [blame] | 362 | * struct perf_event_header header; |
| 363 | * u32 pid, ppid; |
Peter Zijlstra | 9f498cc | 2009-07-23 14:46:33 +0200 | [diff] [blame] | 364 | * u32 tid, ptid; |
Anton Blanchard | a6f10a2 | 2009-09-22 22:34:24 +1000 | [diff] [blame] | 365 | * u64 time; |
Peter Zijlstra | 60313eb | 2009-06-04 16:53:44 +0200 | [diff] [blame] | 366 | * }; |
| 367 | */ |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 368 | PERF_RECORD_FORK = 7, |
Peter Zijlstra | 60313eb | 2009-06-04 16:53:44 +0200 | [diff] [blame] | 369 | |
| 370 | /* |
Peter Zijlstra | 38b200d | 2009-06-23 20:13:11 +0200 | [diff] [blame] | 371 | * struct { |
Ingo Molnar | 184f412 | 2010-01-27 08:39:39 +0100 | [diff] [blame] | 372 | * struct perf_event_header header; |
| 373 | * u32 pid, tid; |
Peter Zijlstra | 3dab77f | 2009-08-13 11:47:53 +0200 | [diff] [blame] | 374 | * |
Ingo Molnar | 184f412 | 2010-01-27 08:39:39 +0100 | [diff] [blame] | 375 | * struct read_format values; |
Peter Zijlstra | 38b200d | 2009-06-23 20:13:11 +0200 | [diff] [blame] | 376 | * }; |
| 377 | */ |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 378 | PERF_RECORD_READ = 8, |
Peter Zijlstra | 38b200d | 2009-06-23 20:13:11 +0200 | [diff] [blame] | 379 | |
| 380 | /* |
Peter Zijlstra | 0c593b3 | 2009-04-06 11:45:08 +0200 | [diff] [blame] | 381 | * struct { |
Ingo Molnar | 0127c3e | 2009-05-25 22:03:26 +0200 | [diff] [blame] | 382 | * struct perf_event_header header; |
Peter Zijlstra | 0c593b3 | 2009-04-06 11:45:08 +0200 | [diff] [blame] | 383 | * |
Peter Zijlstra | 43a21ea | 2009-03-25 19:39:37 +0100 | [diff] [blame] | 384 | * { u64 ip; } && PERF_SAMPLE_IP |
| 385 | * { u32 pid, tid; } && PERF_SAMPLE_TID |
| 386 | * { u64 time; } && PERF_SAMPLE_TIME |
| 387 | * { u64 addr; } && PERF_SAMPLE_ADDR |
Peter Zijlstra | e6e18ec | 2009-06-25 11:27:12 +0200 | [diff] [blame] | 388 | * { u64 id; } && PERF_SAMPLE_ID |
Peter Zijlstra | 7f453c2 | 2009-07-21 13:19:40 +0200 | [diff] [blame] | 389 | * { u64 stream_id;} && PERF_SAMPLE_STREAM_ID |
Peter Zijlstra | 43a21ea | 2009-03-25 19:39:37 +0100 | [diff] [blame] | 390 | * { u32 cpu, res; } && PERF_SAMPLE_CPU |
Ingo Molnar | 57c0c15 | 2009-09-21 12:20:38 +0200 | [diff] [blame] | 391 | * { u64 period; } && PERF_SAMPLE_PERIOD |
Peter Zijlstra | 0c593b3 | 2009-04-06 11:45:08 +0200 | [diff] [blame] | 392 | * |
Peter Zijlstra | 3dab77f | 2009-08-13 11:47:53 +0200 | [diff] [blame] | 393 | * { struct read_format values; } && PERF_SAMPLE_READ |
Peter Zijlstra | 0c593b3 | 2009-04-06 11:45:08 +0200 | [diff] [blame] | 394 | * |
Peter Zijlstra | f9188e0 | 2009-06-18 22:20:52 +0200 | [diff] [blame] | 395 | * { u64 nr, |
Peter Zijlstra | 43a21ea | 2009-03-25 19:39:37 +0100 | [diff] [blame] | 396 | * u64 ips[nr]; } && PERF_SAMPLE_CALLCHAIN |
Peter Zijlstra | 3dab77f | 2009-08-13 11:47:53 +0200 | [diff] [blame] | 397 | * |
Ingo Molnar | 57c0c15 | 2009-09-21 12:20:38 +0200 | [diff] [blame] | 398 | * # |
| 399 | * # The RAW record below is opaque data wrt the ABI |
| 400 | * # |
| 401 | * # That is, the ABI doesn't make any promises wrt to |
| 402 | * # the stability of its content, it may vary depending |
| 403 | * # on event, hardware, kernel version and phase of |
| 404 | * # the moon. |
| 405 | * # |
| 406 | * # In other words, PERF_SAMPLE_RAW contents are not an ABI. |
| 407 | * # |
Peter Zijlstra | 3dab77f | 2009-08-13 11:47:53 +0200 | [diff] [blame] | 408 | * |
Peter Zijlstra | a044560 | 2009-08-10 11:16:52 +0200 | [diff] [blame] | 409 | * { u32 size; |
| 410 | * char data[size];}&& PERF_SAMPLE_RAW |
Peter Zijlstra | 0c593b3 | 2009-04-06 11:45:08 +0200 | [diff] [blame] | 411 | * }; |
Peter Zijlstra | 8a057d8 | 2009-04-02 11:11:59 +0200 | [diff] [blame] | 412 | */ |
Ingo Molnar | 184f412 | 2010-01-27 08:39:39 +0100 | [diff] [blame] | 413 | PERF_RECORD_SAMPLE = 9, |
Peter Zijlstra | e6e18ec | 2009-06-25 11:27:12 +0200 | [diff] [blame] | 414 | |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 415 | PERF_RECORD_MAX, /* non-ABI */ |
Peter Zijlstra | 5c14819 | 2009-03-25 12:30:23 +0100 | [diff] [blame] | 416 | }; |
| 417 | |
Peter Zijlstra | f9188e0 | 2009-06-18 22:20:52 +0200 | [diff] [blame] | 418 | enum perf_callchain_context { |
| 419 | PERF_CONTEXT_HV = (__u64)-32, |
| 420 | PERF_CONTEXT_KERNEL = (__u64)-128, |
| 421 | PERF_CONTEXT_USER = (__u64)-512, |
Ingo Molnar | 7522060 | 2009-06-18 08:00:17 +0200 | [diff] [blame] | 422 | |
Peter Zijlstra | f9188e0 | 2009-06-18 22:20:52 +0200 | [diff] [blame] | 423 | PERF_CONTEXT_GUEST = (__u64)-2048, |
| 424 | PERF_CONTEXT_GUEST_KERNEL = (__u64)-2176, |
| 425 | PERF_CONTEXT_GUEST_USER = (__u64)-2560, |
| 426 | |
| 427 | PERF_CONTEXT_MAX = (__u64)-4095, |
Ingo Molnar | 7522060 | 2009-06-18 08:00:17 +0200 | [diff] [blame] | 428 | }; |
| 429 | |
Peter Zijlstra | a4be7c2 | 2009-08-19 11:18:27 +0200 | [diff] [blame] | 430 | #define PERF_FLAG_FD_NO_GROUP (1U << 0) |
| 431 | #define PERF_FLAG_FD_OUTPUT (1U << 1) |
| 432 | |
Paul Mackerras | f3dfd26 | 2009-02-26 22:43:46 +1100 | [diff] [blame] | 433 | #ifdef __KERNEL__ |
Paul Mackerras | d859e29 | 2009-01-17 18:10:22 +1100 | [diff] [blame] | 434 | /* |
Paul Mackerras | f3dfd26 | 2009-02-26 22:43:46 +1100 | [diff] [blame] | 435 | * Kernel-internal data types and definitions: |
Ingo Molnar | 9f66a38 | 2008-12-10 12:33:23 +0100 | [diff] [blame] | 436 | */ |
| 437 | |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 438 | #ifdef CONFIG_PERF_EVENTS |
| 439 | # include <asm/perf_event.h> |
Paul Mackerras | f3dfd26 | 2009-02-26 22:43:46 +1100 | [diff] [blame] | 440 | #endif |
| 441 | |
Arnd Bergmann | 2ff6cfd | 2009-12-07 17:12:58 +0100 | [diff] [blame] | 442 | #ifdef CONFIG_HAVE_HW_BREAKPOINT |
| 443 | #include <asm/hw_breakpoint.h> |
| 444 | #endif |
| 445 | |
Paul Mackerras | f3dfd26 | 2009-02-26 22:43:46 +1100 | [diff] [blame] | 446 | #include <linux/list.h> |
| 447 | #include <linux/mutex.h> |
| 448 | #include <linux/rculist.h> |
| 449 | #include <linux/rcupdate.h> |
| 450 | #include <linux/spinlock.h> |
Peter Zijlstra | d6d020e | 2009-03-13 12:21:35 +0100 | [diff] [blame] | 451 | #include <linux/hrtimer.h> |
Peter Zijlstra | 3c446b3d | 2009-04-06 11:45:01 +0200 | [diff] [blame] | 452 | #include <linux/fs.h> |
Peter Zijlstra | 709e50c | 2009-06-02 14:13:15 +0200 | [diff] [blame] | 453 | #include <linux/pid_namespace.h> |
Peter Zijlstra | 906010b | 2009-09-21 16:08:49 +0200 | [diff] [blame] | 454 | #include <linux/workqueue.h> |
Paul Mackerras | f3dfd26 | 2009-02-26 22:43:46 +1100 | [diff] [blame] | 455 | #include <asm/atomic.h> |
| 456 | |
Peter Zijlstra | f9188e0 | 2009-06-18 22:20:52 +0200 | [diff] [blame] | 457 | #define PERF_MAX_STACK_DEPTH 255 |
| 458 | |
| 459 | struct perf_callchain_entry { |
| 460 | __u64 nr; |
| 461 | __u64 ip[PERF_MAX_STACK_DEPTH]; |
| 462 | }; |
| 463 | |
Frederic Weisbecker | 3a43ce6 | 2009-08-08 04:26:37 +0200 | [diff] [blame] | 464 | struct perf_raw_record { |
| 465 | u32 size; |
| 466 | void *data; |
Frederic Weisbecker | f413cdb | 2009-08-07 01:25:54 +0200 | [diff] [blame] | 467 | }; |
| 468 | |
Paul Mackerras | f3dfd26 | 2009-02-26 22:43:46 +1100 | [diff] [blame] | 469 | struct task_struct; |
| 470 | |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 471 | /** |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 472 | * struct hw_perf_event - performance event hardware details: |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 473 | */ |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 474 | struct hw_perf_event { |
| 475 | #ifdef CONFIG_PERF_EVENTS |
Peter Zijlstra | d6d020e | 2009-03-13 12:21:35 +0100 | [diff] [blame] | 476 | union { |
| 477 | struct { /* hardware */ |
Ingo Molnar | a308444 | 2009-06-11 14:44:26 +0200 | [diff] [blame] | 478 | u64 config; |
Stephane Eranian | 447a194 | 2010-02-01 14:50:01 +0200 | [diff] [blame] | 479 | u64 last_tag; |
Ingo Molnar | a308444 | 2009-06-11 14:44:26 +0200 | [diff] [blame] | 480 | unsigned long config_base; |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 481 | unsigned long event_base; |
Ingo Molnar | a308444 | 2009-06-11 14:44:26 +0200 | [diff] [blame] | 482 | int idx; |
Stephane Eranian | 447a194 | 2010-02-01 14:50:01 +0200 | [diff] [blame] | 483 | int last_cpu; |
Peter Zijlstra | d6d020e | 2009-03-13 12:21:35 +0100 | [diff] [blame] | 484 | }; |
Soeren Sandmann | 721a669 | 2009-09-15 14:33:08 +0200 | [diff] [blame] | 485 | struct { /* software */ |
| 486 | s64 remaining; |
Ingo Molnar | a308444 | 2009-06-11 14:44:26 +0200 | [diff] [blame] | 487 | struct hrtimer hrtimer; |
Peter Zijlstra | d6d020e | 2009-03-13 12:21:35 +0100 | [diff] [blame] | 488 | }; |
Frederic Weisbecker | 24f1e32c | 2009-09-09 19:22:48 +0200 | [diff] [blame] | 489 | #ifdef CONFIG_HAVE_HW_BREAKPOINT |
| 490 | union { /* breakpoint */ |
| 491 | struct arch_hw_breakpoint info; |
| 492 | }; |
| 493 | #endif |
Peter Zijlstra | d6d020e | 2009-03-13 12:21:35 +0100 | [diff] [blame] | 494 | }; |
Ingo Molnar | ee06094 | 2008-12-13 09:00:03 +0100 | [diff] [blame] | 495 | atomic64_t prev_count; |
Peter Zijlstra | b23f332 | 2009-06-02 15:13:03 +0200 | [diff] [blame] | 496 | u64 sample_period; |
Peter Zijlstra | 9e350de | 2009-06-10 21:34:59 +0200 | [diff] [blame] | 497 | u64 last_period; |
Ingo Molnar | ee06094 | 2008-12-13 09:00:03 +0100 | [diff] [blame] | 498 | atomic64_t period_left; |
Peter Zijlstra | 60db5e0 | 2009-05-15 15:19:28 +0200 | [diff] [blame] | 499 | u64 interrupts; |
Peter Zijlstra | 6a24ed6c | 2009-06-05 18:01:29 +0200 | [diff] [blame] | 500 | |
Peter Zijlstra | abd5071 | 2010-01-26 18:50:16 +0100 | [diff] [blame] | 501 | u64 freq_time_stamp; |
| 502 | u64 freq_count_stamp; |
Ingo Molnar | ee06094 | 2008-12-13 09:00:03 +0100 | [diff] [blame] | 503 | #endif |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 504 | }; |
| 505 | |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 506 | struct perf_event; |
Ingo Molnar | 621a01e | 2008-12-11 12:46:46 +0100 | [diff] [blame] | 507 | |
| 508 | /** |
Robert Richter | 4aeb0b4 | 2009-04-29 12:47:03 +0200 | [diff] [blame] | 509 | * struct pmu - generic performance monitoring unit |
Ingo Molnar | 621a01e | 2008-12-11 12:46:46 +0100 | [diff] [blame] | 510 | */ |
Robert Richter | 4aeb0b4 | 2009-04-29 12:47:03 +0200 | [diff] [blame] | 511 | struct pmu { |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 512 | int (*enable) (struct perf_event *event); |
| 513 | void (*disable) (struct perf_event *event); |
Stephane Eranian | d76a081 | 2010-02-08 17:06:01 +0200 | [diff] [blame] | 514 | int (*start) (struct perf_event *event); |
| 515 | void (*stop) (struct perf_event *event); |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 516 | void (*read) (struct perf_event *event); |
| 517 | void (*unthrottle) (struct perf_event *event); |
Ingo Molnar | 621a01e | 2008-12-11 12:46:46 +0100 | [diff] [blame] | 518 | }; |
| 519 | |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 520 | /** |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 521 | * enum perf_event_active_state - the states of a event |
Ingo Molnar | 6a93070 | 2008-12-11 15:17:03 +0100 | [diff] [blame] | 522 | */ |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 523 | enum perf_event_active_state { |
Ingo Molnar | 57c0c15 | 2009-09-21 12:20:38 +0200 | [diff] [blame] | 524 | PERF_EVENT_STATE_ERROR = -2, |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 525 | PERF_EVENT_STATE_OFF = -1, |
| 526 | PERF_EVENT_STATE_INACTIVE = 0, |
Ingo Molnar | 57c0c15 | 2009-09-21 12:20:38 +0200 | [diff] [blame] | 527 | PERF_EVENT_STATE_ACTIVE = 1, |
Ingo Molnar | 6a93070 | 2008-12-11 15:17:03 +0100 | [diff] [blame] | 528 | }; |
| 529 | |
Ingo Molnar | 9b51f66 | 2008-12-12 13:49:45 +0100 | [diff] [blame] | 530 | struct file; |
| 531 | |
Peter Zijlstra | 7b732a7 | 2009-03-23 18:22:10 +0100 | [diff] [blame] | 532 | struct perf_mmap_data { |
| 533 | struct rcu_head rcu_head; |
Peter Zijlstra | 906010b | 2009-09-21 16:08:49 +0200 | [diff] [blame] | 534 | #ifdef CONFIG_PERF_USE_VMALLOC |
| 535 | struct work_struct work; |
| 536 | #endif |
| 537 | int data_order; |
Peter Zijlstra | 8740f94 | 2009-04-08 15:01:29 +0200 | [diff] [blame] | 538 | int nr_pages; /* nr of data pages */ |
Peter Zijlstra | 43a21ea | 2009-03-25 19:39:37 +0100 | [diff] [blame] | 539 | int writable; /* are we writable */ |
Peter Zijlstra | c5078f7 | 2009-05-05 17:50:24 +0200 | [diff] [blame] | 540 | int nr_locked; /* nr pages mlocked */ |
Peter Zijlstra | 8740f94 | 2009-04-08 15:01:29 +0200 | [diff] [blame] | 541 | |
Peter Zijlstra | c33a0bc | 2009-05-01 12:23:16 +0200 | [diff] [blame] | 542 | atomic_t poll; /* POLL_ for wakeups */ |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 543 | atomic_t events; /* event_id limit */ |
Peter Zijlstra | 8740f94 | 2009-04-08 15:01:29 +0200 | [diff] [blame] | 544 | |
Peter Zijlstra | 8e3747c | 2009-06-02 16:16:02 +0200 | [diff] [blame] | 545 | atomic_long_t head; /* write position */ |
| 546 | atomic_long_t done_head; /* completed head */ |
| 547 | |
Peter Zijlstra | c33a0bc | 2009-05-01 12:23:16 +0200 | [diff] [blame] | 548 | atomic_t lock; /* concurrent writes */ |
Peter Zijlstra | c66de4a5 | 2009-05-05 17:50:22 +0200 | [diff] [blame] | 549 | atomic_t wakeup; /* needs a wakeup */ |
Peter Zijlstra | 43a21ea | 2009-03-25 19:39:37 +0100 | [diff] [blame] | 550 | atomic_t lost; /* nr records lost */ |
Peter Zijlstra | c66de4a5 | 2009-05-05 17:50:22 +0200 | [diff] [blame] | 551 | |
Peter Zijlstra | 2667de8 | 2009-09-17 19:01:10 +0200 | [diff] [blame] | 552 | long watermark; /* wakeup watermark */ |
| 553 | |
Ingo Molnar | 57c0c15 | 2009-09-21 12:20:38 +0200 | [diff] [blame] | 554 | struct perf_event_mmap_page *user_page; |
Ingo Molnar | 0127c3e | 2009-05-25 22:03:26 +0200 | [diff] [blame] | 555 | void *data_pages[0]; |
Peter Zijlstra | 7b732a7 | 2009-03-23 18:22:10 +0100 | [diff] [blame] | 556 | }; |
| 557 | |
Peter Zijlstra | 671dec5 | 2009-04-06 11:45:02 +0200 | [diff] [blame] | 558 | struct perf_pending_entry { |
| 559 | struct perf_pending_entry *next; |
| 560 | void (*func)(struct perf_pending_entry *); |
Peter Zijlstra | 925d519 | 2009-03-30 19:07:02 +0200 | [diff] [blame] | 561 | }; |
| 562 | |
Peter Zijlstra | 453f19e | 2009-11-20 22:19:43 +0100 | [diff] [blame] | 563 | struct perf_sample_data; |
| 564 | |
Frederic Weisbecker | b326e95 | 2009-12-05 09:44:31 +0100 | [diff] [blame] | 565 | typedef void (*perf_overflow_handler_t)(struct perf_event *, int, |
| 566 | struct perf_sample_data *, |
| 567 | struct pt_regs *regs); |
| 568 | |
Frederic Weisbecker | d6f962b | 2010-01-10 01:25:51 +0100 | [diff] [blame] | 569 | enum perf_group_flag { |
| 570 | PERF_GROUP_SOFTWARE = 0x1, |
| 571 | }; |
| 572 | |
Ingo Molnar | 6a93070 | 2008-12-11 15:17:03 +0100 | [diff] [blame] | 573 | /** |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 574 | * struct perf_event - performance event kernel representation: |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 575 | */ |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 576 | struct perf_event { |
| 577 | #ifdef CONFIG_PERF_EVENTS |
Ingo Molnar | 65abc86 | 2009-09-21 10:18:27 +0200 | [diff] [blame] | 578 | struct list_head group_entry; |
Peter Zijlstra | 592903c | 2009-03-13 12:21:36 +0100 | [diff] [blame] | 579 | struct list_head event_entry; |
Ingo Molnar | 04289bb | 2008-12-11 08:38:42 +0100 | [diff] [blame] | 580 | struct list_head sibling_list; |
Ingo Molnar | 0127c3e | 2009-05-25 22:03:26 +0200 | [diff] [blame] | 581 | int nr_siblings; |
Frederic Weisbecker | d6f962b | 2010-01-10 01:25:51 +0100 | [diff] [blame] | 582 | int group_flags; |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 583 | struct perf_event *group_leader; |
| 584 | struct perf_event *output; |
Robert Richter | 4aeb0b4 | 2009-04-29 12:47:03 +0200 | [diff] [blame] | 585 | const struct pmu *pmu; |
Ingo Molnar | 04289bb | 2008-12-11 08:38:42 +0100 | [diff] [blame] | 586 | |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 587 | enum perf_event_active_state state; |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 588 | atomic64_t count; |
Ingo Molnar | ee06094 | 2008-12-13 09:00:03 +0100 | [diff] [blame] | 589 | |
Paul Mackerras | 53cfbf5 | 2009-03-25 22:46:58 +1100 | [diff] [blame] | 590 | /* |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 591 | * These are the total time in nanoseconds that the event |
Paul Mackerras | 53cfbf5 | 2009-03-25 22:46:58 +1100 | [diff] [blame] | 592 | * has been enabled (i.e. eligible to run, and the task has |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 593 | * been scheduled in, if this is a per-task event) |
Paul Mackerras | 53cfbf5 | 2009-03-25 22:46:58 +1100 | [diff] [blame] | 594 | * and running (scheduled onto the CPU), respectively. |
| 595 | * |
| 596 | * They are computed from tstamp_enabled, tstamp_running and |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 597 | * tstamp_stopped when the event is in INACTIVE or ACTIVE state. |
Paul Mackerras | 53cfbf5 | 2009-03-25 22:46:58 +1100 | [diff] [blame] | 598 | */ |
| 599 | u64 total_time_enabled; |
| 600 | u64 total_time_running; |
| 601 | |
| 602 | /* |
| 603 | * These are timestamps used for computing total_time_enabled |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 604 | * and total_time_running when the event is in INACTIVE or |
Paul Mackerras | 53cfbf5 | 2009-03-25 22:46:58 +1100 | [diff] [blame] | 605 | * ACTIVE state, measured in nanoseconds from an arbitrary point |
| 606 | * in time. |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 607 | * tstamp_enabled: the notional time when the event was enabled |
| 608 | * tstamp_running: the notional time when the event was scheduled on |
Paul Mackerras | 53cfbf5 | 2009-03-25 22:46:58 +1100 | [diff] [blame] | 609 | * tstamp_stopped: in INACTIVE state, the notional time when the |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 610 | * event was scheduled off. |
Paul Mackerras | 53cfbf5 | 2009-03-25 22:46:58 +1100 | [diff] [blame] | 611 | */ |
| 612 | u64 tstamp_enabled; |
| 613 | u64 tstamp_running; |
| 614 | u64 tstamp_stopped; |
| 615 | |
Frederic Weisbecker | 24f1e32c | 2009-09-09 19:22:48 +0200 | [diff] [blame] | 616 | struct perf_event_attr attr; |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 617 | struct hw_perf_event hw; |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 618 | |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 619 | struct perf_event_context *ctx; |
Ingo Molnar | 9b51f66 | 2008-12-12 13:49:45 +0100 | [diff] [blame] | 620 | struct file *filp; |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 621 | |
| 622 | /* |
Paul Mackerras | 53cfbf5 | 2009-03-25 22:46:58 +1100 | [diff] [blame] | 623 | * These accumulate total time (in nanoseconds) that children |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 624 | * events have been enabled and running, respectively. |
Paul Mackerras | 53cfbf5 | 2009-03-25 22:46:58 +1100 | [diff] [blame] | 625 | */ |
| 626 | atomic64_t child_total_time_enabled; |
| 627 | atomic64_t child_total_time_running; |
| 628 | |
| 629 | /* |
Paul Mackerras | d859e29 | 2009-01-17 18:10:22 +1100 | [diff] [blame] | 630 | * Protect attach/detach and child_list: |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 631 | */ |
Peter Zijlstra | fccc714 | 2009-05-23 18:28:56 +0200 | [diff] [blame] | 632 | struct mutex child_mutex; |
| 633 | struct list_head child_list; |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 634 | struct perf_event *parent; |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 635 | |
| 636 | int oncpu; |
| 637 | int cpu; |
| 638 | |
Peter Zijlstra | 082ff5a | 2009-05-23 18:29:00 +0200 | [diff] [blame] | 639 | struct list_head owner_entry; |
| 640 | struct task_struct *owner; |
| 641 | |
Peter Zijlstra | 7b732a7 | 2009-03-23 18:22:10 +0100 | [diff] [blame] | 642 | /* mmap bits */ |
| 643 | struct mutex mmap_mutex; |
| 644 | atomic_t mmap_count; |
| 645 | struct perf_mmap_data *data; |
Paul Mackerras | 37d8182 | 2009-03-23 18:22:08 +0100 | [diff] [blame] | 646 | |
Peter Zijlstra | 7b732a7 | 2009-03-23 18:22:10 +0100 | [diff] [blame] | 647 | /* poll related */ |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 648 | wait_queue_head_t waitq; |
Peter Zijlstra | 3c446b3d | 2009-04-06 11:45:01 +0200 | [diff] [blame] | 649 | struct fasync_struct *fasync; |
Peter Zijlstra | 79f1464 | 2009-04-06 11:45:07 +0200 | [diff] [blame] | 650 | |
| 651 | /* delayed work for NMIs and such */ |
| 652 | int pending_wakeup; |
Peter Zijlstra | 4c9e254 | 2009-04-06 11:45:09 +0200 | [diff] [blame] | 653 | int pending_kill; |
Peter Zijlstra | 79f1464 | 2009-04-06 11:45:07 +0200 | [diff] [blame] | 654 | int pending_disable; |
Peter Zijlstra | 671dec5 | 2009-04-06 11:45:02 +0200 | [diff] [blame] | 655 | struct perf_pending_entry pending; |
Peter Zijlstra | 592903c | 2009-03-13 12:21:36 +0100 | [diff] [blame] | 656 | |
Peter Zijlstra | 79f1464 | 2009-04-06 11:45:07 +0200 | [diff] [blame] | 657 | atomic_t event_limit; |
| 658 | |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 659 | void (*destroy)(struct perf_event *); |
Peter Zijlstra | 592903c | 2009-03-13 12:21:36 +0100 | [diff] [blame] | 660 | struct rcu_head rcu_head; |
Peter Zijlstra | 709e50c | 2009-06-02 14:13:15 +0200 | [diff] [blame] | 661 | |
| 662 | struct pid_namespace *ns; |
Peter Zijlstra | 8e5799b | 2009-06-02 15:08:15 +0200 | [diff] [blame] | 663 | u64 id; |
Li Zefan | 6fb2915 | 2009-10-15 11:21:42 +0800 | [diff] [blame] | 664 | |
Frederic Weisbecker | b326e95 | 2009-12-05 09:44:31 +0100 | [diff] [blame] | 665 | perf_overflow_handler_t overflow_handler; |
Peter Zijlstra | 453f19e | 2009-11-20 22:19:43 +0100 | [diff] [blame] | 666 | |
Li Zefan | 07b139c | 2009-12-21 14:27:35 +0800 | [diff] [blame] | 667 | #ifdef CONFIG_EVENT_TRACING |
Li Zefan | 6fb2915 | 2009-10-15 11:21:42 +0800 | [diff] [blame] | 668 | struct event_filter *filter; |
Ingo Molnar | ee06094 | 2008-12-13 09:00:03 +0100 | [diff] [blame] | 669 | #endif |
Li Zefan | 6fb2915 | 2009-10-15 11:21:42 +0800 | [diff] [blame] | 670 | |
| 671 | #endif /* CONFIG_PERF_EVENTS */ |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 672 | }; |
| 673 | |
| 674 | /** |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 675 | * struct perf_event_context - event context structure |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 676 | * |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 677 | * Used as a container for task events and CPU events as well: |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 678 | */ |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 679 | struct perf_event_context { |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 680 | /* |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 681 | * Protect the states of the events in the list, |
Paul Mackerras | d859e29 | 2009-01-17 18:10:22 +1100 | [diff] [blame] | 682 | * nr_active, and the list: |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 683 | */ |
Thomas Gleixner | e625cce1 | 2009-11-17 18:02:06 +0100 | [diff] [blame] | 684 | raw_spinlock_t lock; |
Paul Mackerras | d859e29 | 2009-01-17 18:10:22 +1100 | [diff] [blame] | 685 | /* |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 686 | * Protect the list of events. Locking either mutex or lock |
Paul Mackerras | d859e29 | 2009-01-17 18:10:22 +1100 | [diff] [blame] | 687 | * is sufficient to ensure the list doesn't change; to change |
| 688 | * the list you need to lock both the mutex and the spinlock. |
| 689 | */ |
Ingo Molnar | a308444 | 2009-06-11 14:44:26 +0200 | [diff] [blame] | 690 | struct mutex mutex; |
Ingo Molnar | 04289bb | 2008-12-11 08:38:42 +0100 | [diff] [blame] | 691 | |
Frederic Weisbecker | 889ff01 | 2010-01-09 20:04:47 +0100 | [diff] [blame] | 692 | struct list_head pinned_groups; |
| 693 | struct list_head flexible_groups; |
Ingo Molnar | a308444 | 2009-06-11 14:44:26 +0200 | [diff] [blame] | 694 | struct list_head event_list; |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 695 | int nr_events; |
Ingo Molnar | a308444 | 2009-06-11 14:44:26 +0200 | [diff] [blame] | 696 | int nr_active; |
| 697 | int is_active; |
Peter Zijlstra | bfbd338 | 2009-06-24 21:11:59 +0200 | [diff] [blame] | 698 | int nr_stat; |
Ingo Molnar | a308444 | 2009-06-11 14:44:26 +0200 | [diff] [blame] | 699 | atomic_t refcount; |
| 700 | struct task_struct *task; |
Paul Mackerras | 53cfbf5 | 2009-03-25 22:46:58 +1100 | [diff] [blame] | 701 | |
| 702 | /* |
Peter Zijlstra | 4af4998 | 2009-04-06 11:45:10 +0200 | [diff] [blame] | 703 | * Context clock, runs when context enabled. |
Paul Mackerras | 53cfbf5 | 2009-03-25 22:46:58 +1100 | [diff] [blame] | 704 | */ |
Ingo Molnar | a308444 | 2009-06-11 14:44:26 +0200 | [diff] [blame] | 705 | u64 time; |
| 706 | u64 timestamp; |
Paul Mackerras | 564c2b2 | 2009-05-22 14:27:22 +1000 | [diff] [blame] | 707 | |
| 708 | /* |
| 709 | * These fields let us detect when two contexts have both |
| 710 | * been cloned (inherited) from a common ancestor. |
| 711 | */ |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 712 | struct perf_event_context *parent_ctx; |
Ingo Molnar | a308444 | 2009-06-11 14:44:26 +0200 | [diff] [blame] | 713 | u64 parent_gen; |
| 714 | u64 generation; |
| 715 | int pin_count; |
| 716 | struct rcu_head rcu_head; |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 717 | }; |
| 718 | |
| 719 | /** |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 720 | * struct perf_event_cpu_context - per cpu event context structure |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 721 | */ |
| 722 | struct perf_cpu_context { |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 723 | struct perf_event_context ctx; |
| 724 | struct perf_event_context *task_ctx; |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 725 | int active_oncpu; |
| 726 | int max_pertask; |
Paul Mackerras | 3b6f9e5 | 2009-01-14 21:00:30 +1100 | [diff] [blame] | 727 | int exclusive; |
Peter Zijlstra | 96f6d44 | 2009-03-23 18:22:07 +0100 | [diff] [blame] | 728 | |
| 729 | /* |
| 730 | * Recursion avoidance: |
| 731 | * |
| 732 | * task, softirq, irq, nmi context |
| 733 | */ |
Ingo Molnar | 22a4f65 | 2009-06-01 10:13:37 +0200 | [diff] [blame] | 734 | int recursion[4]; |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 735 | }; |
| 736 | |
Markus Metzger | 5622f29 | 2009-09-15 13:00:23 +0200 | [diff] [blame] | 737 | struct perf_output_handle { |
Ingo Molnar | 57c0c15 | 2009-09-21 12:20:38 +0200 | [diff] [blame] | 738 | struct perf_event *event; |
| 739 | struct perf_mmap_data *data; |
| 740 | unsigned long head; |
| 741 | unsigned long offset; |
| 742 | int nmi; |
| 743 | int sample; |
| 744 | int locked; |
Markus Metzger | 5622f29 | 2009-09-15 13:00:23 +0200 | [diff] [blame] | 745 | }; |
| 746 | |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 747 | #ifdef CONFIG_PERF_EVENTS |
Robert Richter | 829b42d | 2009-04-29 12:46:59 +0200 | [diff] [blame] | 748 | |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 749 | /* |
| 750 | * Set by architecture code: |
| 751 | */ |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 752 | extern int perf_max_events; |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 753 | |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 754 | extern const struct pmu *hw_perf_event_init(struct perf_event *event); |
Ingo Molnar | 621a01e | 2008-12-11 12:46:46 +0100 | [diff] [blame] | 755 | |
Peter Zijlstra | 49f4743 | 2009-12-27 11:51:52 +0100 | [diff] [blame] | 756 | extern void perf_event_task_sched_in(struct task_struct *task); |
Ingo Molnar | 184f412 | 2010-01-27 08:39:39 +0100 | [diff] [blame] | 757 | extern void perf_event_task_sched_out(struct task_struct *task, struct task_struct *next); |
Peter Zijlstra | 49f4743 | 2009-12-27 11:51:52 +0100 | [diff] [blame] | 758 | extern void perf_event_task_tick(struct task_struct *task); |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 759 | extern int perf_event_init_task(struct task_struct *child); |
| 760 | extern void perf_event_exit_task(struct task_struct *child); |
| 761 | extern void perf_event_free_task(struct task_struct *task); |
| 762 | extern void set_perf_event_pending(void); |
| 763 | extern void perf_event_do_pending(void); |
| 764 | extern void perf_event_print_debug(void); |
Peter Zijlstra | 9e35ad3 | 2009-05-13 16:21:38 +0200 | [diff] [blame] | 765 | extern void __perf_disable(void); |
| 766 | extern bool __perf_enable(void); |
| 767 | extern void perf_disable(void); |
| 768 | extern void perf_enable(void); |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 769 | extern int perf_event_task_disable(void); |
| 770 | extern int perf_event_task_enable(void); |
| 771 | extern int hw_perf_group_sched_in(struct perf_event *group_leader, |
Paul Mackerras | 3cbed42 | 2009-01-09 16:43:42 +1100 | [diff] [blame] | 772 | struct perf_cpu_context *cpuctx, |
Peter Zijlstra | 6e37738 | 2010-02-11 13:21:58 +0100 | [diff] [blame] | 773 | struct perf_event_context *ctx); |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 774 | extern void perf_event_update_userpage(struct perf_event *event); |
Arjan van de Ven | fb0459d | 2009-09-25 12:25:56 +0200 | [diff] [blame] | 775 | extern int perf_event_release_kernel(struct perf_event *event); |
| 776 | extern struct perf_event * |
| 777 | perf_event_create_kernel_counter(struct perf_event_attr *attr, |
| 778 | int cpu, |
Frederic Weisbecker | 97eaf53 | 2009-10-18 15:33:50 +0200 | [diff] [blame] | 779 | pid_t pid, |
Frederic Weisbecker | b326e95 | 2009-12-05 09:44:31 +0100 | [diff] [blame] | 780 | perf_overflow_handler_t callback); |
Peter Zijlstra | 59ed446 | 2009-11-20 22:19:55 +0100 | [diff] [blame] | 781 | extern u64 perf_event_read_value(struct perf_event *event, |
| 782 | u64 *enabled, u64 *running); |
Ingo Molnar | 5c92d12 | 2008-12-11 13:21:10 +0100 | [diff] [blame] | 783 | |
Peter Zijlstra | df1a132 | 2009-06-10 21:02:22 +0200 | [diff] [blame] | 784 | struct perf_sample_data { |
Markus Metzger | 5622f29 | 2009-09-15 13:00:23 +0200 | [diff] [blame] | 785 | u64 type; |
| 786 | |
| 787 | u64 ip; |
| 788 | struct { |
| 789 | u32 pid; |
| 790 | u32 tid; |
| 791 | } tid_entry; |
| 792 | u64 time; |
Ingo Molnar | a308444 | 2009-06-11 14:44:26 +0200 | [diff] [blame] | 793 | u64 addr; |
Markus Metzger | 5622f29 | 2009-09-15 13:00:23 +0200 | [diff] [blame] | 794 | u64 id; |
| 795 | u64 stream_id; |
| 796 | struct { |
| 797 | u32 cpu; |
| 798 | u32 reserved; |
| 799 | } cpu_entry; |
Ingo Molnar | a308444 | 2009-06-11 14:44:26 +0200 | [diff] [blame] | 800 | u64 period; |
Markus Metzger | 5622f29 | 2009-09-15 13:00:23 +0200 | [diff] [blame] | 801 | struct perf_callchain_entry *callchain; |
Frederic Weisbecker | 3a43ce6 | 2009-08-08 04:26:37 +0200 | [diff] [blame] | 802 | struct perf_raw_record *raw; |
Peter Zijlstra | df1a132 | 2009-06-10 21:02:22 +0200 | [diff] [blame] | 803 | }; |
| 804 | |
Markus Metzger | 5622f29 | 2009-09-15 13:00:23 +0200 | [diff] [blame] | 805 | extern void perf_output_sample(struct perf_output_handle *handle, |
| 806 | struct perf_event_header *header, |
| 807 | struct perf_sample_data *data, |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 808 | struct perf_event *event); |
Markus Metzger | 5622f29 | 2009-09-15 13:00:23 +0200 | [diff] [blame] | 809 | extern void perf_prepare_sample(struct perf_event_header *header, |
| 810 | struct perf_sample_data *data, |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 811 | struct perf_event *event, |
Markus Metzger | 5622f29 | 2009-09-15 13:00:23 +0200 | [diff] [blame] | 812 | struct pt_regs *regs); |
| 813 | |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 814 | extern int perf_event_overflow(struct perf_event *event, int nmi, |
Markus Metzger | 5622f29 | 2009-09-15 13:00:23 +0200 | [diff] [blame] | 815 | struct perf_sample_data *data, |
| 816 | struct pt_regs *regs); |
Peter Zijlstra | df1a132 | 2009-06-10 21:02:22 +0200 | [diff] [blame] | 817 | |
Paul Mackerras | 3b6f9e5 | 2009-01-14 21:00:30 +1100 | [diff] [blame] | 818 | /* |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 819 | * Return 1 for a software event, 0 for a hardware event |
Paul Mackerras | 3b6f9e5 | 2009-01-14 21:00:30 +1100 | [diff] [blame] | 820 | */ |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 821 | static inline int is_software_event(struct perf_event *event) |
Paul Mackerras | 3b6f9e5 | 2009-01-14 21:00:30 +1100 | [diff] [blame] | 822 | { |
Peter Zijlstra | 92b6759 | 2010-01-18 14:02:16 +0100 | [diff] [blame] | 823 | switch (event->attr.type) { |
| 824 | case PERF_TYPE_SOFTWARE: |
| 825 | case PERF_TYPE_TRACEPOINT: |
| 826 | /* for now the breakpoint stuff also works as software event */ |
| 827 | case PERF_TYPE_BREAKPOINT: |
| 828 | return 1; |
| 829 | } |
| 830 | return 0; |
Paul Mackerras | 3b6f9e5 | 2009-01-14 21:00:30 +1100 | [diff] [blame] | 831 | } |
| 832 | |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 833 | extern atomic_t perf_swevent_enabled[PERF_COUNT_SW_MAX]; |
Peter Zijlstra | f29ac75 | 2009-06-19 18:27:26 +0200 | [diff] [blame] | 834 | |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 835 | extern void __perf_sw_event(u32, u64, int, struct pt_regs *, u64); |
Peter Zijlstra | f29ac75 | 2009-06-19 18:27:26 +0200 | [diff] [blame] | 836 | |
| 837 | static inline void |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 838 | perf_sw_event(u32 event_id, u64 nr, int nmi, struct pt_regs *regs, u64 addr) |
Peter Zijlstra | f29ac75 | 2009-06-19 18:27:26 +0200 | [diff] [blame] | 839 | { |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 840 | if (atomic_read(&perf_swevent_enabled[event_id])) |
| 841 | __perf_sw_event(event_id, nr, nmi, regs, addr); |
Peter Zijlstra | f29ac75 | 2009-06-19 18:27:26 +0200 | [diff] [blame] | 842 | } |
Peter Zijlstra | 15dbf27 | 2009-03-13 12:21:32 +0100 | [diff] [blame] | 843 | |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 844 | extern void __perf_event_mmap(struct vm_area_struct *vma); |
Peter Zijlstra | 089dd79 | 2009-06-05 14:04:55 +0200 | [diff] [blame] | 845 | |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 846 | static inline void perf_event_mmap(struct vm_area_struct *vma) |
Peter Zijlstra | 089dd79 | 2009-06-05 14:04:55 +0200 | [diff] [blame] | 847 | { |
| 848 | if (vma->vm_flags & VM_EXEC) |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 849 | __perf_event_mmap(vma); |
Peter Zijlstra | 089dd79 | 2009-06-05 14:04:55 +0200 | [diff] [blame] | 850 | } |
Peter Zijlstra | 0a4a939 | 2009-03-30 19:07:05 +0200 | [diff] [blame] | 851 | |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 852 | extern void perf_event_comm(struct task_struct *tsk); |
| 853 | extern void perf_event_fork(struct task_struct *tsk); |
Peter Zijlstra | 8d1b2d9 | 2009-04-08 15:01:30 +0200 | [diff] [blame] | 854 | |
Peter Zijlstra | 394ee07 | 2009-03-30 19:07:14 +0200 | [diff] [blame] | 855 | extern struct perf_callchain_entry *perf_callchain(struct pt_regs *regs); |
| 856 | |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 857 | extern int sysctl_perf_event_paranoid; |
| 858 | extern int sysctl_perf_event_mlock; |
| 859 | extern int sysctl_perf_event_sample_rate; |
Peter Zijlstra | 1ccd154 | 2009-04-09 10:53:45 +0200 | [diff] [blame] | 860 | |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 861 | extern void perf_event_init(void); |
Ingo Molnar | 184f412 | 2010-01-27 08:39:39 +0100 | [diff] [blame] | 862 | extern void perf_tp_event(int event_id, u64 addr, u64 count, void *record, int entry_size); |
Frederic Weisbecker | 24f1e32c | 2009-09-09 19:22:48 +0200 | [diff] [blame] | 863 | extern void perf_bp_event(struct perf_event *event, void *data); |
Ingo Molnar | 0d905bc | 2009-05-04 19:13:30 +0200 | [diff] [blame] | 864 | |
Paul Mackerras | 9d23a90 | 2009-05-14 21:48:08 +1000 | [diff] [blame] | 865 | #ifndef perf_misc_flags |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 866 | #define perf_misc_flags(regs) (user_mode(regs) ? PERF_RECORD_MISC_USER : \ |
| 867 | PERF_RECORD_MISC_KERNEL) |
Paul Mackerras | 9d23a90 | 2009-05-14 21:48:08 +1000 | [diff] [blame] | 868 | #define perf_instruction_pointer(regs) instruction_pointer(regs) |
| 869 | #endif |
| 870 | |
Markus Metzger | 5622f29 | 2009-09-15 13:00:23 +0200 | [diff] [blame] | 871 | extern int perf_output_begin(struct perf_output_handle *handle, |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 872 | struct perf_event *event, unsigned int size, |
Markus Metzger | 5622f29 | 2009-09-15 13:00:23 +0200 | [diff] [blame] | 873 | int nmi, int sample); |
| 874 | extern void perf_output_end(struct perf_output_handle *handle); |
| 875 | extern void perf_output_copy(struct perf_output_handle *handle, |
| 876 | const void *buf, unsigned int len); |
Peter Zijlstra | 4ed7c92 | 2009-11-23 11:37:29 +0100 | [diff] [blame] | 877 | extern int perf_swevent_get_recursion_context(void); |
| 878 | extern void perf_swevent_put_recursion_context(int rctx); |
Frederic Weisbecker | 44234ad | 2009-12-09 09:25:48 +0100 | [diff] [blame] | 879 | extern void perf_event_enable(struct perf_event *event); |
| 880 | extern void perf_event_disable(struct perf_event *event); |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 881 | #else |
| 882 | static inline void |
Peter Zijlstra | 49f4743 | 2009-12-27 11:51:52 +0100 | [diff] [blame] | 883 | perf_event_task_sched_in(struct task_struct *task) { } |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 884 | static inline void |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 885 | perf_event_task_sched_out(struct task_struct *task, |
Peter Zijlstra | 49f4743 | 2009-12-27 11:51:52 +0100 | [diff] [blame] | 886 | struct task_struct *next) { } |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 887 | static inline void |
Peter Zijlstra | 49f4743 | 2009-12-27 11:51:52 +0100 | [diff] [blame] | 888 | perf_event_task_tick(struct task_struct *task) { } |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 889 | static inline int perf_event_init_task(struct task_struct *child) { return 0; } |
| 890 | static inline void perf_event_exit_task(struct task_struct *child) { } |
| 891 | static inline void perf_event_free_task(struct task_struct *task) { } |
Ingo Molnar | 57c0c15 | 2009-09-21 12:20:38 +0200 | [diff] [blame] | 892 | static inline void perf_event_do_pending(void) { } |
| 893 | static inline void perf_event_print_debug(void) { } |
Peter Zijlstra | 9e35ad3 | 2009-05-13 16:21:38 +0200 | [diff] [blame] | 894 | static inline void perf_disable(void) { } |
| 895 | static inline void perf_enable(void) { } |
Ingo Molnar | 57c0c15 | 2009-09-21 12:20:38 +0200 | [diff] [blame] | 896 | static inline int perf_event_task_disable(void) { return -EINVAL; } |
| 897 | static inline int perf_event_task_enable(void) { return -EINVAL; } |
Peter Zijlstra | 15dbf27 | 2009-03-13 12:21:32 +0100 | [diff] [blame] | 898 | |
Peter Zijlstra | 925d519 | 2009-03-30 19:07:02 +0200 | [diff] [blame] | 899 | static inline void |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 900 | perf_sw_event(u32 event_id, u64 nr, int nmi, |
Peter Zijlstra | 78f13e9 | 2009-04-08 15:01:33 +0200 | [diff] [blame] | 901 | struct pt_regs *regs, u64 addr) { } |
Frederic Weisbecker | 24f1e32c | 2009-09-09 19:22:48 +0200 | [diff] [blame] | 902 | static inline void |
Ingo Molnar | 184f412 | 2010-01-27 08:39:39 +0100 | [diff] [blame] | 903 | perf_bp_event(struct perf_event *event, void *data) { } |
Peter Zijlstra | 0a4a939 | 2009-03-30 19:07:05 +0200 | [diff] [blame] | 904 | |
Ingo Molnar | 57c0c15 | 2009-09-21 12:20:38 +0200 | [diff] [blame] | 905 | static inline void perf_event_mmap(struct vm_area_struct *vma) { } |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 906 | static inline void perf_event_comm(struct task_struct *tsk) { } |
| 907 | static inline void perf_event_fork(struct task_struct *tsk) { } |
| 908 | static inline void perf_event_init(void) { } |
Ingo Molnar | 184f412 | 2010-01-27 08:39:39 +0100 | [diff] [blame] | 909 | static inline int perf_swevent_get_recursion_context(void) { return -1; } |
Peter Zijlstra | 4ed7c92 | 2009-11-23 11:37:29 +0100 | [diff] [blame] | 910 | static inline void perf_swevent_put_recursion_context(int rctx) { } |
Frederic Weisbecker | 44234ad | 2009-12-09 09:25:48 +0100 | [diff] [blame] | 911 | static inline void perf_event_enable(struct perf_event *event) { } |
| 912 | static inline void perf_event_disable(struct perf_event *event) { } |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 913 | #endif |
| 914 | |
Markus Metzger | 5622f29 | 2009-09-15 13:00:23 +0200 | [diff] [blame] | 915 | #define perf_output_put(handle, x) \ |
| 916 | perf_output_copy((handle), &(x), sizeof(x)) |
| 917 | |
Paul Mackerras | f3dfd26 | 2009-02-26 22:43:46 +1100 | [diff] [blame] | 918 | #endif /* __KERNEL__ */ |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 919 | #endif /* _LINUX_PERF_EVENT_H */ |