Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Performance counters: |
| 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 | * |
| 8 | * Data type definitions, declarations, prototypes. |
| 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 | * |
| 12 | * For licencing details see kernel-base/COPYING |
| 13 | */ |
| 14 | #ifndef _LINUX_PERF_COUNTER_H |
| 15 | #define _LINUX_PERF_COUNTER_H |
| 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, |
Peter Zijlstra | b8e8351 | 2009-03-19 20:26:18 +0100 | [diff] [blame] | 34 | |
Ingo Molnar | a308444 | 2009-06-11 14:44:26 +0200 | [diff] [blame] | 35 | PERF_TYPE_MAX, /* non-ABI */ |
Peter Zijlstra | b8e8351 | 2009-03-19 20:26:18 +0100 | [diff] [blame] | 36 | }; |
| 37 | |
| 38 | /* |
Ingo Molnar | a308444 | 2009-06-11 14:44:26 +0200 | [diff] [blame] | 39 | * Generalized performance counter event types, used by the |
| 40 | * attr.event_id parameter of the sys_perf_counter_open() |
| 41 | * syscall: |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 42 | */ |
Peter Zijlstra | 1c432d8 | 2009-06-11 13:19:29 +0200 | [diff] [blame] | 43 | enum perf_hw_id { |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 44 | /* |
Ingo Molnar | 9f66a38 | 2008-12-10 12:33:23 +0100 | [diff] [blame] | 45 | * Common hardware events, generalized by the kernel: |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 46 | */ |
Peter Zijlstra | f4dbfa8 | 2009-06-11 14:06:28 +0200 | [diff] [blame] | 47 | PERF_COUNT_HW_CPU_CYCLES = 0, |
| 48 | PERF_COUNT_HW_INSTRUCTIONS = 1, |
| 49 | PERF_COUNT_HW_CACHE_REFERENCES = 2, |
| 50 | PERF_COUNT_HW_CACHE_MISSES = 3, |
| 51 | PERF_COUNT_HW_BRANCH_INSTRUCTIONS = 4, |
| 52 | PERF_COUNT_HW_BRANCH_MISSES = 5, |
| 53 | PERF_COUNT_HW_BUS_CYCLES = 6, |
Ingo Molnar | 9f66a38 | 2008-12-10 12:33:23 +0100 | [diff] [blame] | 54 | |
Ingo Molnar | a308444 | 2009-06-11 14:44:26 +0200 | [diff] [blame] | 55 | PERF_COUNT_HW_MAX, /* non-ABI */ |
Peter Zijlstra | b8e8351 | 2009-03-19 20:26:18 +0100 | [diff] [blame] | 56 | }; |
Ingo Molnar | 6c594c2 | 2008-12-14 12:34:15 +0100 | [diff] [blame] | 57 | |
Peter Zijlstra | b8e8351 | 2009-03-19 20:26:18 +0100 | [diff] [blame] | 58 | /* |
Ingo Molnar | 8326f44 | 2009-06-05 20:22:46 +0200 | [diff] [blame] | 59 | * Generalized hardware cache counters: |
| 60 | * |
Peter Zijlstra | 8be6e8f | 2009-06-11 14:19:11 +0200 | [diff] [blame] | 61 | * { L1-D, L1-I, LLC, ITLB, DTLB, BPU } x |
Ingo Molnar | 8326f44 | 2009-06-05 20:22:46 +0200 | [diff] [blame] | 62 | * { read, write, prefetch } x |
| 63 | * { accesses, misses } |
| 64 | */ |
Peter Zijlstra | 1c432d8 | 2009-06-11 13:19:29 +0200 | [diff] [blame] | 65 | enum perf_hw_cache_id { |
Ingo Molnar | a308444 | 2009-06-11 14:44:26 +0200 | [diff] [blame] | 66 | PERF_COUNT_HW_CACHE_L1D = 0, |
| 67 | PERF_COUNT_HW_CACHE_L1I = 1, |
| 68 | PERF_COUNT_HW_CACHE_LL = 2, |
| 69 | PERF_COUNT_HW_CACHE_DTLB = 3, |
| 70 | PERF_COUNT_HW_CACHE_ITLB = 4, |
| 71 | PERF_COUNT_HW_CACHE_BPU = 5, |
Ingo Molnar | 8326f44 | 2009-06-05 20:22:46 +0200 | [diff] [blame] | 72 | |
Ingo Molnar | a308444 | 2009-06-11 14:44:26 +0200 | [diff] [blame] | 73 | PERF_COUNT_HW_CACHE_MAX, /* non-ABI */ |
Ingo Molnar | 8326f44 | 2009-06-05 20:22:46 +0200 | [diff] [blame] | 74 | }; |
| 75 | |
Peter Zijlstra | 1c432d8 | 2009-06-11 13:19:29 +0200 | [diff] [blame] | 76 | enum perf_hw_cache_op_id { |
Ingo Molnar | a308444 | 2009-06-11 14:44:26 +0200 | [diff] [blame] | 77 | PERF_COUNT_HW_CACHE_OP_READ = 0, |
| 78 | PERF_COUNT_HW_CACHE_OP_WRITE = 1, |
| 79 | PERF_COUNT_HW_CACHE_OP_PREFETCH = 2, |
Ingo Molnar | 8326f44 | 2009-06-05 20:22:46 +0200 | [diff] [blame] | 80 | |
Ingo Molnar | a308444 | 2009-06-11 14:44:26 +0200 | [diff] [blame] | 81 | PERF_COUNT_HW_CACHE_OP_MAX, /* non-ABI */ |
Ingo Molnar | 8326f44 | 2009-06-05 20:22:46 +0200 | [diff] [blame] | 82 | }; |
| 83 | |
Peter Zijlstra | 1c432d8 | 2009-06-11 13:19:29 +0200 | [diff] [blame] | 84 | enum perf_hw_cache_op_result_id { |
| 85 | PERF_COUNT_HW_CACHE_RESULT_ACCESS = 0, |
| 86 | PERF_COUNT_HW_CACHE_RESULT_MISS = 1, |
Ingo Molnar | 8326f44 | 2009-06-05 20:22:46 +0200 | [diff] [blame] | 87 | |
Ingo Molnar | a308444 | 2009-06-11 14:44:26 +0200 | [diff] [blame] | 88 | PERF_COUNT_HW_CACHE_RESULT_MAX, /* non-ABI */ |
Ingo Molnar | 8326f44 | 2009-06-05 20:22:46 +0200 | [diff] [blame] | 89 | }; |
| 90 | |
| 91 | /* |
Peter Zijlstra | b8e8351 | 2009-03-19 20:26:18 +0100 | [diff] [blame] | 92 | * Special "software" counters provided by the kernel, even if the hardware |
| 93 | * does not support performance counters. These counters measure various |
| 94 | * physical and sw events of the kernel (and allow the profiling of them as |
| 95 | * well): |
| 96 | */ |
Peter Zijlstra | 1c432d8 | 2009-06-11 13:19:29 +0200 | [diff] [blame] | 97 | enum perf_sw_ids { |
Ingo Molnar | a308444 | 2009-06-11 14:44:26 +0200 | [diff] [blame] | 98 | PERF_COUNT_SW_CPU_CLOCK = 0, |
| 99 | PERF_COUNT_SW_TASK_CLOCK = 1, |
| 100 | PERF_COUNT_SW_PAGE_FAULTS = 2, |
| 101 | PERF_COUNT_SW_CONTEXT_SWITCHES = 3, |
| 102 | PERF_COUNT_SW_CPU_MIGRATIONS = 4, |
| 103 | PERF_COUNT_SW_PAGE_FAULTS_MIN = 5, |
| 104 | PERF_COUNT_SW_PAGE_FAULTS_MAJ = 6, |
Ingo Molnar | 6c594c2 | 2008-12-14 12:34:15 +0100 | [diff] [blame] | 105 | |
Ingo Molnar | a308444 | 2009-06-11 14:44:26 +0200 | [diff] [blame] | 106 | PERF_COUNT_SW_MAX, /* non-ABI */ |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 107 | }; |
| 108 | |
Ingo Molnar | 9f66a38 | 2008-12-10 12:33:23 +0100 | [diff] [blame] | 109 | /* |
Peter Zijlstra | 0d48696 | 2009-06-02 19:22:16 +0200 | [diff] [blame] | 110 | * Bits that can be set in attr.sample_type to request information |
Peter Zijlstra | 8a057d8 | 2009-04-02 11:11:59 +0200 | [diff] [blame] | 111 | * in the overflow packets. |
| 112 | */ |
Peter Zijlstra | b23f332 | 2009-06-02 15:13:03 +0200 | [diff] [blame] | 113 | enum perf_counter_sample_format { |
Ingo Molnar | a308444 | 2009-06-11 14:44:26 +0200 | [diff] [blame] | 114 | PERF_SAMPLE_IP = 1U << 0, |
| 115 | PERF_SAMPLE_TID = 1U << 1, |
| 116 | PERF_SAMPLE_TIME = 1U << 2, |
| 117 | PERF_SAMPLE_ADDR = 1U << 3, |
Peter Zijlstra | 3dab77f | 2009-08-13 11:47:53 +0200 | [diff] [blame] | 118 | PERF_SAMPLE_READ = 1U << 4, |
Ingo Molnar | a308444 | 2009-06-11 14:44:26 +0200 | [diff] [blame] | 119 | PERF_SAMPLE_CALLCHAIN = 1U << 5, |
| 120 | PERF_SAMPLE_ID = 1U << 6, |
| 121 | PERF_SAMPLE_CPU = 1U << 7, |
| 122 | PERF_SAMPLE_PERIOD = 1U << 8, |
Peter Zijlstra | 7f453c2 | 2009-07-21 13:19:40 +0200 | [diff] [blame] | 123 | PERF_SAMPLE_STREAM_ID = 1U << 9, |
Frederic Weisbecker | 3a43ce6 | 2009-08-08 04:26:37 +0200 | [diff] [blame] | 124 | PERF_SAMPLE_RAW = 1U << 10, |
Peter Zijlstra | 974802e | 2009-06-12 12:46:55 +0200 | [diff] [blame] | 125 | |
Frederic Weisbecker | f413cdb | 2009-08-07 01:25:54 +0200 | [diff] [blame] | 126 | PERF_SAMPLE_MAX = 1U << 11, /* non-ABI */ |
Peter Zijlstra | 8a057d8 | 2009-04-02 11:11:59 +0200 | [diff] [blame] | 127 | }; |
| 128 | |
| 129 | /* |
Peter Zijlstra | 3dab77f | 2009-08-13 11:47:53 +0200 | [diff] [blame] | 130 | * The format of the data returned by read() on a perf counter fd, |
| 131 | * as specified by attr.read_format: |
| 132 | * |
| 133 | * struct read_format { |
| 134 | * { u64 value; |
| 135 | * { u64 time_enabled; } && PERF_FORMAT_ENABLED |
| 136 | * { u64 time_running; } && PERF_FORMAT_RUNNING |
| 137 | * { u64 id; } && PERF_FORMAT_ID |
| 138 | * } && !PERF_FORMAT_GROUP |
| 139 | * |
| 140 | * { u64 nr; |
| 141 | * { u64 time_enabled; } && PERF_FORMAT_ENABLED |
| 142 | * { u64 time_running; } && PERF_FORMAT_RUNNING |
| 143 | * { u64 value; |
| 144 | * { u64 id; } && PERF_FORMAT_ID |
| 145 | * } cntr[nr]; |
| 146 | * } && PERF_FORMAT_GROUP |
| 147 | * }; |
Paul Mackerras | 53cfbf5 | 2009-03-25 22:46:58 +1100 | [diff] [blame] | 148 | */ |
| 149 | enum perf_counter_read_format { |
Ingo Molnar | a308444 | 2009-06-11 14:44:26 +0200 | [diff] [blame] | 150 | PERF_FORMAT_TOTAL_TIME_ENABLED = 1U << 0, |
| 151 | PERF_FORMAT_TOTAL_TIME_RUNNING = 1U << 1, |
| 152 | PERF_FORMAT_ID = 1U << 2, |
Peter Zijlstra | 3dab77f | 2009-08-13 11:47:53 +0200 | [diff] [blame] | 153 | PERF_FORMAT_GROUP = 1U << 3, |
Peter Zijlstra | 974802e | 2009-06-12 12:46:55 +0200 | [diff] [blame] | 154 | |
Peter Zijlstra | 3dab77f | 2009-08-13 11:47:53 +0200 | [diff] [blame] | 155 | PERF_FORMAT_MAX = 1U << 4, /* non-ABI */ |
Paul Mackerras | 53cfbf5 | 2009-03-25 22:46:58 +1100 | [diff] [blame] | 156 | }; |
| 157 | |
Peter Zijlstra | 974802e | 2009-06-12 12:46:55 +0200 | [diff] [blame] | 158 | #define PERF_ATTR_SIZE_VER0 64 /* sizeof first published struct */ |
| 159 | |
Paul Mackerras | 53cfbf5 | 2009-03-25 22:46:58 +1100 | [diff] [blame] | 160 | /* |
Ingo Molnar | 9f66a38 | 2008-12-10 12:33:23 +0100 | [diff] [blame] | 161 | * Hardware event to monitor via a performance monitoring counter: |
| 162 | */ |
Peter Zijlstra | 0d48696 | 2009-06-02 19:22:16 +0200 | [diff] [blame] | 163 | struct perf_counter_attr { |
Peter Zijlstra | 974802e | 2009-06-12 12:46:55 +0200 | [diff] [blame] | 164 | |
Peter Zijlstra | f4a2deb4 | 2009-03-23 18:22:06 +0100 | [diff] [blame] | 165 | /* |
Ingo Molnar | a21ca2c | 2009-06-06 09:58:57 +0200 | [diff] [blame] | 166 | * Major type: hardware/software/tracepoint/etc. |
| 167 | */ |
| 168 | __u32 type; |
Peter Zijlstra | 974802e | 2009-06-12 12:46:55 +0200 | [diff] [blame] | 169 | |
| 170 | /* |
| 171 | * Size of the attr structure, for fwd/bwd compat. |
| 172 | */ |
| 173 | __u32 size; |
Ingo Molnar | a21ca2c | 2009-06-06 09:58:57 +0200 | [diff] [blame] | 174 | |
| 175 | /* |
| 176 | * Type specific configuration information. |
Peter Zijlstra | f4a2deb4 | 2009-03-23 18:22:06 +0100 | [diff] [blame] | 177 | */ |
| 178 | __u64 config; |
Ingo Molnar | 9f66a38 | 2008-12-10 12:33:23 +0100 | [diff] [blame] | 179 | |
Peter Zijlstra | 60db5e0 | 2009-05-15 15:19:28 +0200 | [diff] [blame] | 180 | union { |
Peter Zijlstra | b23f332 | 2009-06-02 15:13:03 +0200 | [diff] [blame] | 181 | __u64 sample_period; |
| 182 | __u64 sample_freq; |
Peter Zijlstra | 60db5e0 | 2009-05-15 15:19:28 +0200 | [diff] [blame] | 183 | }; |
| 184 | |
Peter Zijlstra | b23f332 | 2009-06-02 15:13:03 +0200 | [diff] [blame] | 185 | __u64 sample_type; |
| 186 | __u64 read_format; |
Ingo Molnar | 9f66a38 | 2008-12-10 12:33:23 +0100 | [diff] [blame] | 187 | |
Paul Mackerras | 2743a5b | 2009-03-04 20:36:51 +1100 | [diff] [blame] | 188 | __u64 disabled : 1, /* off by default */ |
Paul Mackerras | 0475f9e | 2009-02-11 14:35:35 +1100 | [diff] [blame] | 189 | inherit : 1, /* children inherit it */ |
| 190 | pinned : 1, /* must always be on PMU */ |
| 191 | exclusive : 1, /* only group on PMU */ |
| 192 | exclude_user : 1, /* don't count user */ |
| 193 | exclude_kernel : 1, /* ditto kernel */ |
| 194 | exclude_hv : 1, /* ditto hypervisor */ |
Paul Mackerras | 2743a5b | 2009-03-04 20:36:51 +1100 | [diff] [blame] | 195 | exclude_idle : 1, /* don't count when idle */ |
Peter Zijlstra | 0a4a939 | 2009-03-30 19:07:05 +0200 | [diff] [blame] | 196 | mmap : 1, /* include mmap data */ |
Peter Zijlstra | 8d1b2d9 | 2009-04-08 15:01:30 +0200 | [diff] [blame] | 197 | comm : 1, /* include comm data */ |
Peter Zijlstra | 60db5e0 | 2009-05-15 15:19:28 +0200 | [diff] [blame] | 198 | freq : 1, /* use freq, not period */ |
Peter Zijlstra | bfbd338 | 2009-06-24 21:11:59 +0200 | [diff] [blame] | 199 | inherit_stat : 1, /* per task counts */ |
Paul Mackerras | 57e7986 | 2009-06-30 16:07:19 +1000 | [diff] [blame] | 200 | enable_on_exec : 1, /* next exec enables */ |
Peter Zijlstra | 9f498cc | 2009-07-23 14:46:33 +0200 | [diff] [blame] | 201 | task : 1, /* trace fork/exit */ |
Peter Zijlstra | 2667de8 | 2009-09-17 19:01:10 +0200 | [diff] [blame] | 202 | watermark : 1, /* wakeup_watermark */ |
Paul Mackerras | 3b6f9e5 | 2009-01-14 21:00:30 +1100 | [diff] [blame] | 203 | |
Peter Zijlstra | 2667de8 | 2009-09-17 19:01:10 +0200 | [diff] [blame] | 204 | __reserved_1 : 49; |
Paul Mackerras | 2743a5b | 2009-03-04 20:36:51 +1100 | [diff] [blame] | 205 | |
Peter Zijlstra | 2667de8 | 2009-09-17 19:01:10 +0200 | [diff] [blame] | 206 | union { |
| 207 | __u32 wakeup_events; /* wakeup every n events */ |
| 208 | __u32 wakeup_watermark; /* bytes before wakeup */ |
| 209 | }; |
Peter Zijlstra | 974802e | 2009-06-12 12:46:55 +0200 | [diff] [blame] | 210 | __u32 __reserved_2; |
Ingo Molnar | 9f66a38 | 2008-12-10 12:33:23 +0100 | [diff] [blame] | 211 | |
Peter Zijlstra | 974802e | 2009-06-12 12:46:55 +0200 | [diff] [blame] | 212 | __u64 __reserved_3; |
Thomas Gleixner | eab656a | 2008-12-08 19:26:59 +0100 | [diff] [blame] | 213 | }; |
| 214 | |
Ingo Molnar | 9f66a38 | 2008-12-10 12:33:23 +0100 | [diff] [blame] | 215 | /* |
Paul Mackerras | d859e29 | 2009-01-17 18:10:22 +1100 | [diff] [blame] | 216 | * Ioctls that can be done on a perf counter fd: |
| 217 | */ |
Peter Zijlstra | 08247e3 | 2009-06-02 16:46:57 +0200 | [diff] [blame] | 218 | #define PERF_COUNTER_IOC_ENABLE _IO ('$', 0) |
| 219 | #define PERF_COUNTER_IOC_DISABLE _IO ('$', 1) |
| 220 | #define PERF_COUNTER_IOC_REFRESH _IO ('$', 2) |
| 221 | #define PERF_COUNTER_IOC_RESET _IO ('$', 3) |
| 222 | #define PERF_COUNTER_IOC_PERIOD _IOW('$', 4, u64) |
Peter Zijlstra | a4be7c2 | 2009-08-19 11:18:27 +0200 | [diff] [blame] | 223 | #define PERF_COUNTER_IOC_SET_OUTPUT _IO ('$', 5) |
Peter Zijlstra | 3df5eda | 2009-05-08 18:52:22 +0200 | [diff] [blame] | 224 | |
| 225 | enum perf_counter_ioc_flags { |
| 226 | PERF_IOC_FLAG_GROUP = 1U << 0, |
| 227 | }; |
Paul Mackerras | d859e29 | 2009-01-17 18:10:22 +1100 | [diff] [blame] | 228 | |
Paul Mackerras | 37d8182 | 2009-03-23 18:22:08 +0100 | [diff] [blame] | 229 | /* |
| 230 | * Structure of the page that can be mapped via mmap |
| 231 | */ |
| 232 | struct perf_counter_mmap_page { |
| 233 | __u32 version; /* version number of this structure */ |
| 234 | __u32 compat_version; /* lowest version this is compat with */ |
Peter Zijlstra | 38ff667 | 2009-03-30 19:07:03 +0200 | [diff] [blame] | 235 | |
| 236 | /* |
| 237 | * Bits needed to read the hw counters in user-space. |
| 238 | * |
Peter Zijlstra | 92f22a3 | 2009-04-02 11:12:04 +0200 | [diff] [blame] | 239 | * u32 seq; |
| 240 | * s64 count; |
Peter Zijlstra | 38ff667 | 2009-03-30 19:07:03 +0200 | [diff] [blame] | 241 | * |
Peter Zijlstra | a2e87d0 | 2009-04-06 11:44:59 +0200 | [diff] [blame] | 242 | * do { |
| 243 | * seq = pc->lock; |
Peter Zijlstra | 38ff667 | 2009-03-30 19:07:03 +0200 | [diff] [blame] | 244 | * |
Peter Zijlstra | a2e87d0 | 2009-04-06 11:44:59 +0200 | [diff] [blame] | 245 | * barrier() |
| 246 | * if (pc->index) { |
| 247 | * count = pmc_read(pc->index - 1); |
| 248 | * count += pc->offset; |
| 249 | * } else |
| 250 | * goto regular_read; |
Peter Zijlstra | 38ff667 | 2009-03-30 19:07:03 +0200 | [diff] [blame] | 251 | * |
Peter Zijlstra | a2e87d0 | 2009-04-06 11:44:59 +0200 | [diff] [blame] | 252 | * barrier(); |
| 253 | * } while (pc->lock != seq); |
Peter Zijlstra | 38ff667 | 2009-03-30 19:07:03 +0200 | [diff] [blame] | 254 | * |
Peter Zijlstra | 92f22a3 | 2009-04-02 11:12:04 +0200 | [diff] [blame] | 255 | * NOTE: for obvious reason this only works on self-monitoring |
| 256 | * processes. |
Peter Zijlstra | 38ff667 | 2009-03-30 19:07:03 +0200 | [diff] [blame] | 257 | */ |
Paul Mackerras | 37d8182 | 2009-03-23 18:22:08 +0100 | [diff] [blame] | 258 | __u32 lock; /* seqlock for synchronization */ |
| 259 | __u32 index; /* hardware counter identifier */ |
| 260 | __s64 offset; /* add to hardware counter value */ |
Peter Zijlstra | 7f8b4e4 | 2009-06-22 14:34:35 +0200 | [diff] [blame] | 261 | __u64 time_enabled; /* time counter active */ |
| 262 | __u64 time_running; /* time counter on cpu */ |
Peter Zijlstra | 7b732a7 | 2009-03-23 18:22:10 +0100 | [diff] [blame] | 263 | |
Peter Zijlstra | 41f9533 | 2009-06-23 17:55:18 +0200 | [diff] [blame] | 264 | /* |
| 265 | * Hole for extension of the self monitor capabilities |
| 266 | */ |
| 267 | |
Peter Zijlstra | 7f8b4e4 | 2009-06-22 14:34:35 +0200 | [diff] [blame] | 268 | __u64 __reserved[123]; /* align to 1k */ |
Peter Zijlstra | 41f9533 | 2009-06-23 17:55:18 +0200 | [diff] [blame] | 269 | |
Peter Zijlstra | 38ff667 | 2009-03-30 19:07:03 +0200 | [diff] [blame] | 270 | /* |
| 271 | * Control data for the mmap() data buffer. |
| 272 | * |
Peter Zijlstra | 43a21ea | 2009-03-25 19:39:37 +0100 | [diff] [blame] | 273 | * User-space reading the @data_head value should issue an rmb(), on |
| 274 | * SMP capable platforms, after reading this value -- see |
| 275 | * perf_counter_wakeup(). |
| 276 | * |
| 277 | * When the mapping is PROT_WRITE the @data_tail value should be |
| 278 | * written by userspace to reflect the last read data. In this case |
| 279 | * the kernel will not over-write unread data. |
Peter Zijlstra | 38ff667 | 2009-03-30 19:07:03 +0200 | [diff] [blame] | 280 | */ |
Peter Zijlstra | 8e3747c | 2009-06-02 16:16:02 +0200 | [diff] [blame] | 281 | __u64 data_head; /* head in the data section */ |
Peter Zijlstra | 43a21ea | 2009-03-25 19:39:37 +0100 | [diff] [blame] | 282 | __u64 data_tail; /* user-space written tail */ |
Paul Mackerras | 37d8182 | 2009-03-23 18:22:08 +0100 | [diff] [blame] | 283 | }; |
| 284 | |
Ingo Molnar | a308444 | 2009-06-11 14:44:26 +0200 | [diff] [blame] | 285 | #define PERF_EVENT_MISC_CPUMODE_MASK (3 << 0) |
| 286 | #define PERF_EVENT_MISC_CPUMODE_UNKNOWN (0 << 0) |
| 287 | #define PERF_EVENT_MISC_KERNEL (1 << 0) |
| 288 | #define PERF_EVENT_MISC_USER (2 << 0) |
| 289 | #define PERF_EVENT_MISC_HYPERVISOR (3 << 0) |
Peter Zijlstra | 6fab019 | 2009-04-08 15:01:26 +0200 | [diff] [blame] | 290 | |
Peter Zijlstra | 5c14819 | 2009-03-25 12:30:23 +0100 | [diff] [blame] | 291 | struct perf_event_header { |
| 292 | __u32 type; |
Peter Zijlstra | 6fab019 | 2009-04-08 15:01:26 +0200 | [diff] [blame] | 293 | __u16 misc; |
| 294 | __u16 size; |
Peter Zijlstra | 5c14819 | 2009-03-25 12:30:23 +0100 | [diff] [blame] | 295 | }; |
| 296 | |
| 297 | enum perf_event_type { |
Peter Zijlstra | 5ed0041 | 2009-03-30 19:07:12 +0200 | [diff] [blame] | 298 | |
Peter Zijlstra | 0c593b3 | 2009-04-06 11:45:08 +0200 | [diff] [blame] | 299 | /* |
| 300 | * The MMAP events record the PROT_EXEC mappings so that we can |
| 301 | * correlate userspace IPs to code. They have the following structure: |
| 302 | * |
| 303 | * struct { |
Ingo Molnar | 0127c3e | 2009-05-25 22:03:26 +0200 | [diff] [blame] | 304 | * struct perf_event_header header; |
Peter Zijlstra | 0c593b3 | 2009-04-06 11:45:08 +0200 | [diff] [blame] | 305 | * |
Ingo Molnar | 0127c3e | 2009-05-25 22:03:26 +0200 | [diff] [blame] | 306 | * u32 pid, tid; |
| 307 | * u64 addr; |
| 308 | * u64 len; |
| 309 | * u64 pgoff; |
| 310 | * char filename[]; |
Peter Zijlstra | 0c593b3 | 2009-04-06 11:45:08 +0200 | [diff] [blame] | 311 | * }; |
| 312 | */ |
Peter Zijlstra | 8a057d8 | 2009-04-02 11:11:59 +0200 | [diff] [blame] | 313 | PERF_EVENT_MMAP = 1, |
Peter Zijlstra | ea5d20c | 2009-03-25 12:30:25 +0100 | [diff] [blame] | 314 | |
Peter Zijlstra | 8a057d8 | 2009-04-02 11:11:59 +0200 | [diff] [blame] | 315 | /* |
Peter Zijlstra | 8d1b2d9 | 2009-04-08 15:01:30 +0200 | [diff] [blame] | 316 | * struct { |
Peter Zijlstra | 43a21ea | 2009-03-25 19:39:37 +0100 | [diff] [blame] | 317 | * struct perf_event_header header; |
| 318 | * u64 id; |
| 319 | * u64 lost; |
| 320 | * }; |
| 321 | */ |
| 322 | PERF_EVENT_LOST = 2, |
| 323 | |
| 324 | /* |
| 325 | * struct { |
Ingo Molnar | 0127c3e | 2009-05-25 22:03:26 +0200 | [diff] [blame] | 326 | * struct perf_event_header header; |
Peter Zijlstra | 8d1b2d9 | 2009-04-08 15:01:30 +0200 | [diff] [blame] | 327 | * |
Ingo Molnar | 0127c3e | 2009-05-25 22:03:26 +0200 | [diff] [blame] | 328 | * u32 pid, tid; |
| 329 | * char comm[]; |
Peter Zijlstra | 8d1b2d9 | 2009-04-08 15:01:30 +0200 | [diff] [blame] | 330 | * }; |
| 331 | */ |
| 332 | PERF_EVENT_COMM = 3, |
| 333 | |
| 334 | /* |
Peter Zijlstra | 26b119b | 2009-05-20 12:21:20 +0200 | [diff] [blame] | 335 | * struct { |
Ingo Molnar | 0127c3e | 2009-05-25 22:03:26 +0200 | [diff] [blame] | 336 | * struct perf_event_header header; |
Peter Zijlstra | 9f498cc | 2009-07-23 14:46:33 +0200 | [diff] [blame] | 337 | * u32 pid, ppid; |
| 338 | * u32 tid, ptid; |
Arjan van de Ven | 393b2ad | 2009-09-12 07:52:47 +0200 | [diff] [blame] | 339 | * u64 time; |
Peter Zijlstra | 9f498cc | 2009-07-23 14:46:33 +0200 | [diff] [blame] | 340 | * }; |
| 341 | */ |
| 342 | PERF_EVENT_EXIT = 4, |
| 343 | |
| 344 | /* |
| 345 | * struct { |
| 346 | * struct perf_event_header header; |
Ingo Molnar | 0127c3e | 2009-05-25 22:03:26 +0200 | [diff] [blame] | 347 | * u64 time; |
Peter Zijlstra | 689802b | 2009-06-05 15:05:43 +0200 | [diff] [blame] | 348 | * u64 id; |
Peter Zijlstra | 7f453c2 | 2009-07-21 13:19:40 +0200 | [diff] [blame] | 349 | * u64 stream_id; |
Peter Zijlstra | a78ac32 | 2009-05-25 17:39:05 +0200 | [diff] [blame] | 350 | * }; |
| 351 | */ |
| 352 | PERF_EVENT_THROTTLE = 5, |
| 353 | PERF_EVENT_UNTHROTTLE = 6, |
| 354 | |
| 355 | /* |
Peter Zijlstra | 60313eb | 2009-06-04 16:53:44 +0200 | [diff] [blame] | 356 | * struct { |
Ingo Molnar | a21ca2c | 2009-06-06 09:58:57 +0200 | [diff] [blame] | 357 | * struct perf_event_header header; |
| 358 | * u32 pid, ppid; |
Peter Zijlstra | 9f498cc | 2009-07-23 14:46:33 +0200 | [diff] [blame] | 359 | * u32 tid, ptid; |
Arjan van de Ven | 393b2ad | 2009-09-12 07:52:47 +0200 | [diff] [blame] | 360 | * { u64 time; } && PERF_SAMPLE_TIME |
Peter Zijlstra | 60313eb | 2009-06-04 16:53:44 +0200 | [diff] [blame] | 361 | * }; |
| 362 | */ |
| 363 | PERF_EVENT_FORK = 7, |
| 364 | |
| 365 | /* |
Peter Zijlstra | 38b200d | 2009-06-23 20:13:11 +0200 | [diff] [blame] | 366 | * struct { |
| 367 | * struct perf_event_header header; |
| 368 | * u32 pid, tid; |
Peter Zijlstra | 3dab77f | 2009-08-13 11:47:53 +0200 | [diff] [blame] | 369 | * |
| 370 | * struct read_format values; |
Peter Zijlstra | 38b200d | 2009-06-23 20:13:11 +0200 | [diff] [blame] | 371 | * }; |
| 372 | */ |
| 373 | PERF_EVENT_READ = 8, |
| 374 | |
| 375 | /* |
Peter Zijlstra | 0c593b3 | 2009-04-06 11:45:08 +0200 | [diff] [blame] | 376 | * struct { |
Ingo Molnar | 0127c3e | 2009-05-25 22:03:26 +0200 | [diff] [blame] | 377 | * struct perf_event_header header; |
Peter Zijlstra | 0c593b3 | 2009-04-06 11:45:08 +0200 | [diff] [blame] | 378 | * |
Peter Zijlstra | 43a21ea | 2009-03-25 19:39:37 +0100 | [diff] [blame] | 379 | * { u64 ip; } && PERF_SAMPLE_IP |
| 380 | * { u32 pid, tid; } && PERF_SAMPLE_TID |
| 381 | * { u64 time; } && PERF_SAMPLE_TIME |
| 382 | * { u64 addr; } && PERF_SAMPLE_ADDR |
Peter Zijlstra | e6e18ec | 2009-06-25 11:27:12 +0200 | [diff] [blame] | 383 | * { u64 id; } && PERF_SAMPLE_ID |
Peter Zijlstra | 7f453c2 | 2009-07-21 13:19:40 +0200 | [diff] [blame] | 384 | * { u64 stream_id;} && PERF_SAMPLE_STREAM_ID |
Peter Zijlstra | 43a21ea | 2009-03-25 19:39:37 +0100 | [diff] [blame] | 385 | * { u32 cpu, res; } && PERF_SAMPLE_CPU |
Peter Zijlstra | e6e18ec | 2009-06-25 11:27:12 +0200 | [diff] [blame] | 386 | * { u64 period; } && PERF_SAMPLE_PERIOD |
Peter Zijlstra | 0c593b3 | 2009-04-06 11:45:08 +0200 | [diff] [blame] | 387 | * |
Peter Zijlstra | 3dab77f | 2009-08-13 11:47:53 +0200 | [diff] [blame] | 388 | * { struct read_format values; } && PERF_SAMPLE_READ |
Peter Zijlstra | 0c593b3 | 2009-04-06 11:45:08 +0200 | [diff] [blame] | 389 | * |
Peter Zijlstra | f9188e0 | 2009-06-18 22:20:52 +0200 | [diff] [blame] | 390 | * { u64 nr, |
Peter Zijlstra | 43a21ea | 2009-03-25 19:39:37 +0100 | [diff] [blame] | 391 | * u64 ips[nr]; } && PERF_SAMPLE_CALLCHAIN |
Peter Zijlstra | 3dab77f | 2009-08-13 11:47:53 +0200 | [diff] [blame] | 392 | * |
| 393 | * # |
| 394 | * # The RAW record below is opaque data wrt the ABI |
| 395 | * # |
| 396 | * # That is, the ABI doesn't make any promises wrt to |
| 397 | * # the stability of its content, it may vary depending |
| 398 | * # on event, hardware, kernel version and phase of |
| 399 | * # the moon. |
| 400 | * # |
| 401 | * # In other words, PERF_SAMPLE_RAW contents are not an ABI. |
| 402 | * # |
| 403 | * |
Peter Zijlstra | a044560 | 2009-08-10 11:16:52 +0200 | [diff] [blame] | 404 | * { u32 size; |
| 405 | * char data[size];}&& PERF_SAMPLE_RAW |
Peter Zijlstra | 0c593b3 | 2009-04-06 11:45:08 +0200 | [diff] [blame] | 406 | * }; |
Peter Zijlstra | 8a057d8 | 2009-04-02 11:11:59 +0200 | [diff] [blame] | 407 | */ |
Peter Zijlstra | e6e18ec | 2009-06-25 11:27:12 +0200 | [diff] [blame] | 408 | PERF_EVENT_SAMPLE = 9, |
| 409 | |
| 410 | PERF_EVENT_MAX, /* non-ABI */ |
Peter Zijlstra | 5c14819 | 2009-03-25 12:30:23 +0100 | [diff] [blame] | 411 | }; |
| 412 | |
Peter Zijlstra | f9188e0 | 2009-06-18 22:20:52 +0200 | [diff] [blame] | 413 | enum perf_callchain_context { |
| 414 | PERF_CONTEXT_HV = (__u64)-32, |
| 415 | PERF_CONTEXT_KERNEL = (__u64)-128, |
| 416 | PERF_CONTEXT_USER = (__u64)-512, |
Ingo Molnar | 7522060 | 2009-06-18 08:00:17 +0200 | [diff] [blame] | 417 | |
Peter Zijlstra | f9188e0 | 2009-06-18 22:20:52 +0200 | [diff] [blame] | 418 | PERF_CONTEXT_GUEST = (__u64)-2048, |
| 419 | PERF_CONTEXT_GUEST_KERNEL = (__u64)-2176, |
| 420 | PERF_CONTEXT_GUEST_USER = (__u64)-2560, |
| 421 | |
| 422 | PERF_CONTEXT_MAX = (__u64)-4095, |
Ingo Molnar | 7522060 | 2009-06-18 08:00:17 +0200 | [diff] [blame] | 423 | }; |
| 424 | |
Peter Zijlstra | a4be7c2 | 2009-08-19 11:18:27 +0200 | [diff] [blame] | 425 | #define PERF_FLAG_FD_NO_GROUP (1U << 0) |
| 426 | #define PERF_FLAG_FD_OUTPUT (1U << 1) |
| 427 | |
Paul Mackerras | f3dfd26 | 2009-02-26 22:43:46 +1100 | [diff] [blame] | 428 | #ifdef __KERNEL__ |
Paul Mackerras | d859e29 | 2009-01-17 18:10:22 +1100 | [diff] [blame] | 429 | /* |
Paul Mackerras | f3dfd26 | 2009-02-26 22:43:46 +1100 | [diff] [blame] | 430 | * Kernel-internal data types and definitions: |
Ingo Molnar | 9f66a38 | 2008-12-10 12:33:23 +0100 | [diff] [blame] | 431 | */ |
| 432 | |
Paul Mackerras | f3dfd26 | 2009-02-26 22:43:46 +1100 | [diff] [blame] | 433 | #ifdef CONFIG_PERF_COUNTERS |
| 434 | # include <asm/perf_counter.h> |
| 435 | #endif |
| 436 | |
| 437 | #include <linux/list.h> |
| 438 | #include <linux/mutex.h> |
| 439 | #include <linux/rculist.h> |
| 440 | #include <linux/rcupdate.h> |
| 441 | #include <linux/spinlock.h> |
Peter Zijlstra | d6d020e | 2009-03-13 12:21:35 +0100 | [diff] [blame] | 442 | #include <linux/hrtimer.h> |
Peter Zijlstra | 3c446b3d | 2009-04-06 11:45:01 +0200 | [diff] [blame] | 443 | #include <linux/fs.h> |
Peter Zijlstra | 709e50c | 2009-06-02 14:13:15 +0200 | [diff] [blame] | 444 | #include <linux/pid_namespace.h> |
Paul Mackerras | f3dfd26 | 2009-02-26 22:43:46 +1100 | [diff] [blame] | 445 | #include <asm/atomic.h> |
| 446 | |
Peter Zijlstra | f9188e0 | 2009-06-18 22:20:52 +0200 | [diff] [blame] | 447 | #define PERF_MAX_STACK_DEPTH 255 |
| 448 | |
| 449 | struct perf_callchain_entry { |
| 450 | __u64 nr; |
| 451 | __u64 ip[PERF_MAX_STACK_DEPTH]; |
| 452 | }; |
| 453 | |
Frederic Weisbecker | 3a43ce6 | 2009-08-08 04:26:37 +0200 | [diff] [blame] | 454 | struct perf_raw_record { |
| 455 | u32 size; |
| 456 | void *data; |
Frederic Weisbecker | f413cdb | 2009-08-07 01:25:54 +0200 | [diff] [blame] | 457 | }; |
| 458 | |
Paul Mackerras | f3dfd26 | 2009-02-26 22:43:46 +1100 | [diff] [blame] | 459 | struct task_struct; |
| 460 | |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 461 | /** |
Ingo Molnar | 9f66a38 | 2008-12-10 12:33:23 +0100 | [diff] [blame] | 462 | * struct hw_perf_counter - performance counter hardware details: |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 463 | */ |
| 464 | struct hw_perf_counter { |
Ingo Molnar | ee06094 | 2008-12-13 09:00:03 +0100 | [diff] [blame] | 465 | #ifdef CONFIG_PERF_COUNTERS |
Peter Zijlstra | d6d020e | 2009-03-13 12:21:35 +0100 | [diff] [blame] | 466 | union { |
| 467 | struct { /* hardware */ |
Ingo Molnar | a308444 | 2009-06-11 14:44:26 +0200 | [diff] [blame] | 468 | u64 config; |
| 469 | unsigned long config_base; |
| 470 | unsigned long counter_base; |
| 471 | int idx; |
Peter Zijlstra | d6d020e | 2009-03-13 12:21:35 +0100 | [diff] [blame] | 472 | }; |
| 473 | union { /* software */ |
Ingo Molnar | a308444 | 2009-06-11 14:44:26 +0200 | [diff] [blame] | 474 | atomic64_t count; |
| 475 | struct hrtimer hrtimer; |
Peter Zijlstra | d6d020e | 2009-03-13 12:21:35 +0100 | [diff] [blame] | 476 | }; |
| 477 | }; |
Ingo Molnar | ee06094 | 2008-12-13 09:00:03 +0100 | [diff] [blame] | 478 | atomic64_t prev_count; |
Peter Zijlstra | b23f332 | 2009-06-02 15:13:03 +0200 | [diff] [blame] | 479 | u64 sample_period; |
Peter Zijlstra | 9e350de | 2009-06-10 21:34:59 +0200 | [diff] [blame] | 480 | u64 last_period; |
Ingo Molnar | ee06094 | 2008-12-13 09:00:03 +0100 | [diff] [blame] | 481 | atomic64_t period_left; |
Peter Zijlstra | 60db5e0 | 2009-05-15 15:19:28 +0200 | [diff] [blame] | 482 | u64 interrupts; |
Peter Zijlstra | 6a24ed6c | 2009-06-05 18:01:29 +0200 | [diff] [blame] | 483 | |
| 484 | u64 freq_count; |
| 485 | u64 freq_interrupts; |
Peter Zijlstra | bd2b5b1 | 2009-06-10 13:40:57 +0200 | [diff] [blame] | 486 | u64 freq_stamp; |
Ingo Molnar | ee06094 | 2008-12-13 09:00:03 +0100 | [diff] [blame] | 487 | #endif |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 488 | }; |
| 489 | |
Ingo Molnar | 621a01e | 2008-12-11 12:46:46 +0100 | [diff] [blame] | 490 | struct perf_counter; |
| 491 | |
| 492 | /** |
Robert Richter | 4aeb0b4 | 2009-04-29 12:47:03 +0200 | [diff] [blame] | 493 | * struct pmu - generic performance monitoring unit |
Ingo Molnar | 621a01e | 2008-12-11 12:46:46 +0100 | [diff] [blame] | 494 | */ |
Robert Richter | 4aeb0b4 | 2009-04-29 12:47:03 +0200 | [diff] [blame] | 495 | struct pmu { |
Ingo Molnar | 95cdd2e | 2008-12-21 13:50:42 +0100 | [diff] [blame] | 496 | int (*enable) (struct perf_counter *counter); |
Ingo Molnar | 7671581 | 2008-12-17 14:20:28 +0100 | [diff] [blame] | 497 | void (*disable) (struct perf_counter *counter); |
| 498 | void (*read) (struct perf_counter *counter); |
Peter Zijlstra | a78ac32 | 2009-05-25 17:39:05 +0200 | [diff] [blame] | 499 | void (*unthrottle) (struct perf_counter *counter); |
Ingo Molnar | 621a01e | 2008-12-11 12:46:46 +0100 | [diff] [blame] | 500 | }; |
| 501 | |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 502 | /** |
Ingo Molnar | 6a93070 | 2008-12-11 15:17:03 +0100 | [diff] [blame] | 503 | * enum perf_counter_active_state - the states of a counter |
| 504 | */ |
| 505 | enum perf_counter_active_state { |
Paul Mackerras | 3b6f9e5 | 2009-01-14 21:00:30 +1100 | [diff] [blame] | 506 | PERF_COUNTER_STATE_ERROR = -2, |
Ingo Molnar | 6a93070 | 2008-12-11 15:17:03 +0100 | [diff] [blame] | 507 | PERF_COUNTER_STATE_OFF = -1, |
| 508 | PERF_COUNTER_STATE_INACTIVE = 0, |
| 509 | PERF_COUNTER_STATE_ACTIVE = 1, |
| 510 | }; |
| 511 | |
Ingo Molnar | 9b51f66 | 2008-12-12 13:49:45 +0100 | [diff] [blame] | 512 | struct file; |
| 513 | |
Peter Zijlstra | 7b732a7 | 2009-03-23 18:22:10 +0100 | [diff] [blame] | 514 | struct perf_mmap_data { |
| 515 | struct rcu_head rcu_head; |
Peter Zijlstra | 8740f94 | 2009-04-08 15:01:29 +0200 | [diff] [blame] | 516 | int nr_pages; /* nr of data pages */ |
Peter Zijlstra | 43a21ea | 2009-03-25 19:39:37 +0100 | [diff] [blame] | 517 | int writable; /* are we writable */ |
Peter Zijlstra | c5078f7 | 2009-05-05 17:50:24 +0200 | [diff] [blame] | 518 | int nr_locked; /* nr pages mlocked */ |
Peter Zijlstra | 8740f94 | 2009-04-08 15:01:29 +0200 | [diff] [blame] | 519 | |
Peter Zijlstra | c33a0bc | 2009-05-01 12:23:16 +0200 | [diff] [blame] | 520 | atomic_t poll; /* POLL_ for wakeups */ |
Peter Zijlstra | 8740f94 | 2009-04-08 15:01:29 +0200 | [diff] [blame] | 521 | atomic_t events; /* event limit */ |
| 522 | |
Peter Zijlstra | 8e3747c | 2009-06-02 16:16:02 +0200 | [diff] [blame] | 523 | atomic_long_t head; /* write position */ |
| 524 | atomic_long_t done_head; /* completed head */ |
| 525 | |
Peter Zijlstra | c33a0bc | 2009-05-01 12:23:16 +0200 | [diff] [blame] | 526 | atomic_t lock; /* concurrent writes */ |
Peter Zijlstra | c66de4a5 | 2009-05-05 17:50:22 +0200 | [diff] [blame] | 527 | atomic_t wakeup; /* needs a wakeup */ |
Peter Zijlstra | 43a21ea | 2009-03-25 19:39:37 +0100 | [diff] [blame] | 528 | atomic_t lost; /* nr records lost */ |
Peter Zijlstra | c66de4a5 | 2009-05-05 17:50:22 +0200 | [diff] [blame] | 529 | |
Peter Zijlstra | 2667de8 | 2009-09-17 19:01:10 +0200 | [diff] [blame] | 530 | long watermark; /* wakeup watermark */ |
| 531 | |
Peter Zijlstra | 7b732a7 | 2009-03-23 18:22:10 +0100 | [diff] [blame] | 532 | struct perf_counter_mmap_page *user_page; |
Ingo Molnar | 0127c3e | 2009-05-25 22:03:26 +0200 | [diff] [blame] | 533 | void *data_pages[0]; |
Peter Zijlstra | 7b732a7 | 2009-03-23 18:22:10 +0100 | [diff] [blame] | 534 | }; |
| 535 | |
Peter Zijlstra | 671dec5 | 2009-04-06 11:45:02 +0200 | [diff] [blame] | 536 | struct perf_pending_entry { |
| 537 | struct perf_pending_entry *next; |
| 538 | void (*func)(struct perf_pending_entry *); |
Peter Zijlstra | 925d519 | 2009-03-30 19:07:02 +0200 | [diff] [blame] | 539 | }; |
| 540 | |
Ingo Molnar | 6a93070 | 2008-12-11 15:17:03 +0100 | [diff] [blame] | 541 | /** |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 542 | * struct perf_counter - performance counter kernel representation: |
| 543 | */ |
| 544 | struct perf_counter { |
Ingo Molnar | ee06094 | 2008-12-13 09:00:03 +0100 | [diff] [blame] | 545 | #ifdef CONFIG_PERF_COUNTERS |
Ingo Molnar | 04289bb | 2008-12-11 08:38:42 +0100 | [diff] [blame] | 546 | struct list_head list_entry; |
Peter Zijlstra | 592903c | 2009-03-13 12:21:36 +0100 | [diff] [blame] | 547 | struct list_head event_entry; |
Ingo Molnar | 04289bb | 2008-12-11 08:38:42 +0100 | [diff] [blame] | 548 | struct list_head sibling_list; |
Ingo Molnar | 0127c3e | 2009-05-25 22:03:26 +0200 | [diff] [blame] | 549 | int nr_siblings; |
Ingo Molnar | 04289bb | 2008-12-11 08:38:42 +0100 | [diff] [blame] | 550 | struct perf_counter *group_leader; |
Peter Zijlstra | a4be7c2 | 2009-08-19 11:18:27 +0200 | [diff] [blame] | 551 | struct perf_counter *output; |
Robert Richter | 4aeb0b4 | 2009-04-29 12:47:03 +0200 | [diff] [blame] | 552 | const struct pmu *pmu; |
Ingo Molnar | 04289bb | 2008-12-11 08:38:42 +0100 | [diff] [blame] | 553 | |
Ingo Molnar | 6a93070 | 2008-12-11 15:17:03 +0100 | [diff] [blame] | 554 | enum perf_counter_active_state state; |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 555 | atomic64_t count; |
Ingo Molnar | ee06094 | 2008-12-13 09:00:03 +0100 | [diff] [blame] | 556 | |
Paul Mackerras | 53cfbf5 | 2009-03-25 22:46:58 +1100 | [diff] [blame] | 557 | /* |
| 558 | * These are the total time in nanoseconds that the counter |
| 559 | * has been enabled (i.e. eligible to run, and the task has |
| 560 | * been scheduled in, if this is a per-task counter) |
| 561 | * and running (scheduled onto the CPU), respectively. |
| 562 | * |
| 563 | * They are computed from tstamp_enabled, tstamp_running and |
| 564 | * tstamp_stopped when the counter is in INACTIVE or ACTIVE state. |
| 565 | */ |
| 566 | u64 total_time_enabled; |
| 567 | u64 total_time_running; |
| 568 | |
| 569 | /* |
| 570 | * These are timestamps used for computing total_time_enabled |
| 571 | * and total_time_running when the counter is in INACTIVE or |
| 572 | * ACTIVE state, measured in nanoseconds from an arbitrary point |
| 573 | * in time. |
| 574 | * tstamp_enabled: the notional time when the counter was enabled |
| 575 | * tstamp_running: the notional time when the counter was scheduled on |
| 576 | * tstamp_stopped: in INACTIVE state, the notional time when the |
| 577 | * counter was scheduled off. |
| 578 | */ |
| 579 | u64 tstamp_enabled; |
| 580 | u64 tstamp_running; |
| 581 | u64 tstamp_stopped; |
| 582 | |
Peter Zijlstra | 0d48696 | 2009-06-02 19:22:16 +0200 | [diff] [blame] | 583 | struct perf_counter_attr attr; |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 584 | struct hw_perf_counter hw; |
| 585 | |
| 586 | struct perf_counter_context *ctx; |
Ingo Molnar | 9b51f66 | 2008-12-12 13:49:45 +0100 | [diff] [blame] | 587 | struct file *filp; |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 588 | |
| 589 | /* |
Paul Mackerras | 53cfbf5 | 2009-03-25 22:46:58 +1100 | [diff] [blame] | 590 | * These accumulate total time (in nanoseconds) that children |
| 591 | * counters have been enabled and running, respectively. |
| 592 | */ |
| 593 | atomic64_t child_total_time_enabled; |
| 594 | atomic64_t child_total_time_running; |
| 595 | |
| 596 | /* |
Paul Mackerras | d859e29 | 2009-01-17 18:10:22 +1100 | [diff] [blame] | 597 | * Protect attach/detach and child_list: |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 598 | */ |
Peter Zijlstra | fccc714 | 2009-05-23 18:28:56 +0200 | [diff] [blame] | 599 | struct mutex child_mutex; |
| 600 | struct list_head child_list; |
| 601 | struct perf_counter *parent; |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 602 | |
| 603 | int oncpu; |
| 604 | int cpu; |
| 605 | |
Peter Zijlstra | 082ff5a | 2009-05-23 18:29:00 +0200 | [diff] [blame] | 606 | struct list_head owner_entry; |
| 607 | struct task_struct *owner; |
| 608 | |
Peter Zijlstra | 7b732a7 | 2009-03-23 18:22:10 +0100 | [diff] [blame] | 609 | /* mmap bits */ |
| 610 | struct mutex mmap_mutex; |
| 611 | atomic_t mmap_count; |
| 612 | struct perf_mmap_data *data; |
Paul Mackerras | 37d8182 | 2009-03-23 18:22:08 +0100 | [diff] [blame] | 613 | |
Peter Zijlstra | 7b732a7 | 2009-03-23 18:22:10 +0100 | [diff] [blame] | 614 | /* poll related */ |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 615 | wait_queue_head_t waitq; |
Peter Zijlstra | 3c446b3d | 2009-04-06 11:45:01 +0200 | [diff] [blame] | 616 | struct fasync_struct *fasync; |
Peter Zijlstra | 79f1464 | 2009-04-06 11:45:07 +0200 | [diff] [blame] | 617 | |
| 618 | /* delayed work for NMIs and such */ |
| 619 | int pending_wakeup; |
Peter Zijlstra | 4c9e254 | 2009-04-06 11:45:09 +0200 | [diff] [blame] | 620 | int pending_kill; |
Peter Zijlstra | 79f1464 | 2009-04-06 11:45:07 +0200 | [diff] [blame] | 621 | int pending_disable; |
Peter Zijlstra | 671dec5 | 2009-04-06 11:45:02 +0200 | [diff] [blame] | 622 | struct perf_pending_entry pending; |
Peter Zijlstra | 592903c | 2009-03-13 12:21:36 +0100 | [diff] [blame] | 623 | |
Peter Zijlstra | 79f1464 | 2009-04-06 11:45:07 +0200 | [diff] [blame] | 624 | atomic_t event_limit; |
| 625 | |
Peter Zijlstra | e077df4 | 2009-03-19 20:26:17 +0100 | [diff] [blame] | 626 | void (*destroy)(struct perf_counter *); |
Peter Zijlstra | 592903c | 2009-03-13 12:21:36 +0100 | [diff] [blame] | 627 | struct rcu_head rcu_head; |
Peter Zijlstra | 709e50c | 2009-06-02 14:13:15 +0200 | [diff] [blame] | 628 | |
| 629 | struct pid_namespace *ns; |
Peter Zijlstra | 8e5799b | 2009-06-02 15:08:15 +0200 | [diff] [blame] | 630 | u64 id; |
Ingo Molnar | ee06094 | 2008-12-13 09:00:03 +0100 | [diff] [blame] | 631 | #endif |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 632 | }; |
| 633 | |
| 634 | /** |
| 635 | * struct perf_counter_context - counter context structure |
| 636 | * |
| 637 | * Used as a container for task counters and CPU counters as well: |
| 638 | */ |
| 639 | struct perf_counter_context { |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 640 | /* |
Paul Mackerras | d859e29 | 2009-01-17 18:10:22 +1100 | [diff] [blame] | 641 | * Protect the states of the counters in the list, |
| 642 | * nr_active, and the list: |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 643 | */ |
Ingo Molnar | a308444 | 2009-06-11 14:44:26 +0200 | [diff] [blame] | 644 | spinlock_t lock; |
Paul Mackerras | d859e29 | 2009-01-17 18:10:22 +1100 | [diff] [blame] | 645 | /* |
| 646 | * Protect the list of counters. Locking either mutex or lock |
| 647 | * is sufficient to ensure the list doesn't change; to change |
| 648 | * the list you need to lock both the mutex and the spinlock. |
| 649 | */ |
Ingo Molnar | a308444 | 2009-06-11 14:44:26 +0200 | [diff] [blame] | 650 | struct mutex mutex; |
Ingo Molnar | 04289bb | 2008-12-11 08:38:42 +0100 | [diff] [blame] | 651 | |
Ingo Molnar | a308444 | 2009-06-11 14:44:26 +0200 | [diff] [blame] | 652 | struct list_head counter_list; |
| 653 | struct list_head event_list; |
| 654 | int nr_counters; |
| 655 | int nr_active; |
| 656 | int is_active; |
Peter Zijlstra | bfbd338 | 2009-06-24 21:11:59 +0200 | [diff] [blame] | 657 | int nr_stat; |
Ingo Molnar | a308444 | 2009-06-11 14:44:26 +0200 | [diff] [blame] | 658 | atomic_t refcount; |
| 659 | struct task_struct *task; |
Paul Mackerras | 53cfbf5 | 2009-03-25 22:46:58 +1100 | [diff] [blame] | 660 | |
| 661 | /* |
Peter Zijlstra | 4af4998 | 2009-04-06 11:45:10 +0200 | [diff] [blame] | 662 | * Context clock, runs when context enabled. |
Paul Mackerras | 53cfbf5 | 2009-03-25 22:46:58 +1100 | [diff] [blame] | 663 | */ |
Ingo Molnar | a308444 | 2009-06-11 14:44:26 +0200 | [diff] [blame] | 664 | u64 time; |
| 665 | u64 timestamp; |
Paul Mackerras | 564c2b2 | 2009-05-22 14:27:22 +1000 | [diff] [blame] | 666 | |
| 667 | /* |
| 668 | * These fields let us detect when two contexts have both |
| 669 | * been cloned (inherited) from a common ancestor. |
| 670 | */ |
Ingo Molnar | a308444 | 2009-06-11 14:44:26 +0200 | [diff] [blame] | 671 | struct perf_counter_context *parent_ctx; |
| 672 | u64 parent_gen; |
| 673 | u64 generation; |
| 674 | int pin_count; |
| 675 | struct rcu_head rcu_head; |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 676 | }; |
| 677 | |
| 678 | /** |
| 679 | * struct perf_counter_cpu_context - per cpu counter context structure |
| 680 | */ |
| 681 | struct perf_cpu_context { |
| 682 | struct perf_counter_context ctx; |
| 683 | struct perf_counter_context *task_ctx; |
| 684 | int active_oncpu; |
| 685 | int max_pertask; |
Paul Mackerras | 3b6f9e5 | 2009-01-14 21:00:30 +1100 | [diff] [blame] | 686 | int exclusive; |
Peter Zijlstra | 96f6d44 | 2009-03-23 18:22:07 +0100 | [diff] [blame] | 687 | |
| 688 | /* |
| 689 | * Recursion avoidance: |
| 690 | * |
| 691 | * task, softirq, irq, nmi context |
| 692 | */ |
Ingo Molnar | 22a4f65 | 2009-06-01 10:13:37 +0200 | [diff] [blame] | 693 | int recursion[4]; |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 694 | }; |
| 695 | |
Markus Metzger | 5622f29 | 2009-09-15 13:00:23 +0200 | [diff] [blame] | 696 | struct perf_output_handle { |
| 697 | struct perf_counter *counter; |
| 698 | struct perf_mmap_data *data; |
| 699 | unsigned long head; |
| 700 | unsigned long offset; |
| 701 | int nmi; |
| 702 | int sample; |
| 703 | int locked; |
| 704 | unsigned long flags; |
| 705 | }; |
| 706 | |
Robert Richter | 829b42d | 2009-04-29 12:46:59 +0200 | [diff] [blame] | 707 | #ifdef CONFIG_PERF_COUNTERS |
| 708 | |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 709 | /* |
| 710 | * Set by architecture code: |
| 711 | */ |
| 712 | extern int perf_max_counters; |
| 713 | |
Robert Richter | 4aeb0b4 | 2009-04-29 12:47:03 +0200 | [diff] [blame] | 714 | extern const struct pmu *hw_perf_counter_init(struct perf_counter *counter); |
Ingo Molnar | 621a01e | 2008-12-11 12:46:46 +0100 | [diff] [blame] | 715 | |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 716 | extern void perf_counter_task_sched_in(struct task_struct *task, int cpu); |
Paul Mackerras | 564c2b2 | 2009-05-22 14:27:22 +1000 | [diff] [blame] | 717 | extern void perf_counter_task_sched_out(struct task_struct *task, |
| 718 | struct task_struct *next, int cpu); |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 719 | extern void perf_counter_task_tick(struct task_struct *task, int cpu); |
Peter Zijlstra | 6ab423e | 2009-05-25 14:45:27 +0200 | [diff] [blame] | 720 | extern int perf_counter_init_task(struct task_struct *child); |
Ingo Molnar | 9b51f66 | 2008-12-12 13:49:45 +0100 | [diff] [blame] | 721 | extern void perf_counter_exit_task(struct task_struct *child); |
Peter Zijlstra | bbbee90 | 2009-05-29 14:25:58 +0200 | [diff] [blame] | 722 | extern void perf_counter_free_task(struct task_struct *task); |
Paul Mackerras | 9974458 | 2009-06-15 21:45:16 +1000 | [diff] [blame] | 723 | extern void set_perf_counter_pending(void); |
Peter Zijlstra | 925d519 | 2009-03-30 19:07:02 +0200 | [diff] [blame] | 724 | extern void perf_counter_do_pending(void); |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 725 | extern void perf_counter_print_debug(void); |
Peter Zijlstra | 9e35ad3 | 2009-05-13 16:21:38 +0200 | [diff] [blame] | 726 | extern void __perf_disable(void); |
| 727 | extern bool __perf_enable(void); |
| 728 | extern void perf_disable(void); |
| 729 | extern void perf_enable(void); |
Ingo Molnar | 1d1c7dd | 2008-12-11 14:59:31 +0100 | [diff] [blame] | 730 | extern int perf_counter_task_disable(void); |
| 731 | extern int perf_counter_task_enable(void); |
Paul Mackerras | 3cbed42 | 2009-01-09 16:43:42 +1100 | [diff] [blame] | 732 | extern int hw_perf_group_sched_in(struct perf_counter *group_leader, |
| 733 | struct perf_cpu_context *cpuctx, |
| 734 | struct perf_counter_context *ctx, int cpu); |
Paul Mackerras | 37d8182 | 2009-03-23 18:22:08 +0100 | [diff] [blame] | 735 | extern void perf_counter_update_userpage(struct perf_counter *counter); |
Ingo Molnar | 5c92d12 | 2008-12-11 13:21:10 +0100 | [diff] [blame] | 736 | |
Peter Zijlstra | df1a132 | 2009-06-10 21:02:22 +0200 | [diff] [blame] | 737 | struct perf_sample_data { |
Markus Metzger | 5622f29 | 2009-09-15 13:00:23 +0200 | [diff] [blame] | 738 | u64 type; |
| 739 | |
| 740 | u64 ip; |
| 741 | struct { |
| 742 | u32 pid; |
| 743 | u32 tid; |
| 744 | } tid_entry; |
| 745 | u64 time; |
Ingo Molnar | a308444 | 2009-06-11 14:44:26 +0200 | [diff] [blame] | 746 | u64 addr; |
Markus Metzger | 5622f29 | 2009-09-15 13:00:23 +0200 | [diff] [blame] | 747 | u64 id; |
| 748 | u64 stream_id; |
| 749 | struct { |
| 750 | u32 cpu; |
| 751 | u32 reserved; |
| 752 | } cpu_entry; |
Ingo Molnar | a308444 | 2009-06-11 14:44:26 +0200 | [diff] [blame] | 753 | u64 period; |
Markus Metzger | 5622f29 | 2009-09-15 13:00:23 +0200 | [diff] [blame] | 754 | struct perf_callchain_entry *callchain; |
Frederic Weisbecker | 3a43ce6 | 2009-08-08 04:26:37 +0200 | [diff] [blame] | 755 | struct perf_raw_record *raw; |
Peter Zijlstra | df1a132 | 2009-06-10 21:02:22 +0200 | [diff] [blame] | 756 | }; |
| 757 | |
Markus Metzger | 5622f29 | 2009-09-15 13:00:23 +0200 | [diff] [blame] | 758 | extern void perf_output_sample(struct perf_output_handle *handle, |
| 759 | struct perf_event_header *header, |
| 760 | struct perf_sample_data *data, |
| 761 | struct perf_counter *counter); |
| 762 | extern void perf_prepare_sample(struct perf_event_header *header, |
| 763 | struct perf_sample_data *data, |
| 764 | struct perf_counter *counter, |
| 765 | struct pt_regs *regs); |
| 766 | |
Peter Zijlstra | df1a132 | 2009-06-10 21:02:22 +0200 | [diff] [blame] | 767 | extern int perf_counter_overflow(struct perf_counter *counter, int nmi, |
Markus Metzger | 5622f29 | 2009-09-15 13:00:23 +0200 | [diff] [blame] | 768 | struct perf_sample_data *data, |
| 769 | struct pt_regs *regs); |
Peter Zijlstra | df1a132 | 2009-06-10 21:02:22 +0200 | [diff] [blame] | 770 | |
Paul Mackerras | 3b6f9e5 | 2009-01-14 21:00:30 +1100 | [diff] [blame] | 771 | /* |
| 772 | * Return 1 for a software counter, 0 for a hardware counter |
| 773 | */ |
| 774 | static inline int is_software_counter(struct perf_counter *counter) |
| 775 | { |
Ingo Molnar | a21ca2c | 2009-06-06 09:58:57 +0200 | [diff] [blame] | 776 | return (counter->attr.type != PERF_TYPE_RAW) && |
Peter Zijlstra | f1a3c97 | 2009-06-11 17:56:09 +0200 | [diff] [blame] | 777 | (counter->attr.type != PERF_TYPE_HARDWARE) && |
| 778 | (counter->attr.type != PERF_TYPE_HW_CACHE); |
Paul Mackerras | 3b6f9e5 | 2009-01-14 21:00:30 +1100 | [diff] [blame] | 779 | } |
| 780 | |
Peter Zijlstra | f29ac75 | 2009-06-19 18:27:26 +0200 | [diff] [blame] | 781 | extern atomic_t perf_swcounter_enabled[PERF_COUNT_SW_MAX]; |
| 782 | |
| 783 | extern void __perf_swcounter_event(u32, u64, int, struct pt_regs *, u64); |
| 784 | |
| 785 | static inline void |
| 786 | perf_swcounter_event(u32 event, u64 nr, int nmi, struct pt_regs *regs, u64 addr) |
| 787 | { |
| 788 | if (atomic_read(&perf_swcounter_enabled[event])) |
| 789 | __perf_swcounter_event(event, nr, nmi, regs, addr); |
| 790 | } |
Peter Zijlstra | 15dbf27 | 2009-03-13 12:21:32 +0100 | [diff] [blame] | 791 | |
Peter Zijlstra | 089dd79 | 2009-06-05 14:04:55 +0200 | [diff] [blame] | 792 | extern void __perf_counter_mmap(struct vm_area_struct *vma); |
| 793 | |
| 794 | static inline void perf_counter_mmap(struct vm_area_struct *vma) |
| 795 | { |
| 796 | if (vma->vm_flags & VM_EXEC) |
| 797 | __perf_counter_mmap(vma); |
| 798 | } |
Peter Zijlstra | 0a4a939 | 2009-03-30 19:07:05 +0200 | [diff] [blame] | 799 | |
Peter Zijlstra | 8d1b2d9 | 2009-04-08 15:01:30 +0200 | [diff] [blame] | 800 | extern void perf_counter_comm(struct task_struct *tsk); |
Peter Zijlstra | 60313eb | 2009-06-04 16:53:44 +0200 | [diff] [blame] | 801 | extern void perf_counter_fork(struct task_struct *tsk); |
Peter Zijlstra | 8d1b2d9 | 2009-04-08 15:01:30 +0200 | [diff] [blame] | 802 | |
Peter Zijlstra | 394ee07 | 2009-03-30 19:07:14 +0200 | [diff] [blame] | 803 | extern struct perf_callchain_entry *perf_callchain(struct pt_regs *regs); |
| 804 | |
Peter Zijlstra | 0764771 | 2009-06-11 11:18:36 +0200 | [diff] [blame] | 805 | extern int sysctl_perf_counter_paranoid; |
Peter Zijlstra | c5078f7 | 2009-05-05 17:50:24 +0200 | [diff] [blame] | 806 | extern int sysctl_perf_counter_mlock; |
Peter Zijlstra | df58ab2 | 2009-06-11 11:25:05 +0200 | [diff] [blame] | 807 | extern int sysctl_perf_counter_sample_rate; |
Peter Zijlstra | 1ccd154 | 2009-04-09 10:53:45 +0200 | [diff] [blame] | 808 | |
Ingo Molnar | 0d905bc | 2009-05-04 19:13:30 +0200 | [diff] [blame] | 809 | extern void perf_counter_init(void); |
Jason Baron | f4b5ffc | 2009-08-10 16:53:02 -0400 | [diff] [blame] | 810 | extern void perf_tpcounter_event(int event_id, u64 addr, u64 count, |
| 811 | void *record, int entry_size); |
Ingo Molnar | 0d905bc | 2009-05-04 19:13:30 +0200 | [diff] [blame] | 812 | |
Paul Mackerras | 9d23a90 | 2009-05-14 21:48:08 +1000 | [diff] [blame] | 813 | #ifndef perf_misc_flags |
| 814 | #define perf_misc_flags(regs) (user_mode(regs) ? PERF_EVENT_MISC_USER : \ |
| 815 | PERF_EVENT_MISC_KERNEL) |
| 816 | #define perf_instruction_pointer(regs) instruction_pointer(regs) |
| 817 | #endif |
| 818 | |
Markus Metzger | 5622f29 | 2009-09-15 13:00:23 +0200 | [diff] [blame] | 819 | extern int perf_output_begin(struct perf_output_handle *handle, |
| 820 | struct perf_counter *counter, unsigned int size, |
| 821 | int nmi, int sample); |
| 822 | extern void perf_output_end(struct perf_output_handle *handle); |
| 823 | extern void perf_output_copy(struct perf_output_handle *handle, |
| 824 | const void *buf, unsigned int len); |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 825 | #else |
| 826 | static inline void |
| 827 | perf_counter_task_sched_in(struct task_struct *task, int cpu) { } |
| 828 | static inline void |
Ingo Molnar | 910431c | 2009-05-22 12:32:15 +0200 | [diff] [blame] | 829 | perf_counter_task_sched_out(struct task_struct *task, |
| 830 | struct task_struct *next, int cpu) { } |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 831 | static inline void |
| 832 | perf_counter_task_tick(struct task_struct *task, int cpu) { } |
Ingo Molnar | d3e78ee | 2009-05-28 11:41:50 +0200 | [diff] [blame] | 833 | static inline int perf_counter_init_task(struct task_struct *child) { return 0; } |
Ingo Molnar | 9b51f66 | 2008-12-12 13:49:45 +0100 | [diff] [blame] | 834 | static inline void perf_counter_exit_task(struct task_struct *child) { } |
Peter Zijlstra | bbbee90 | 2009-05-29 14:25:58 +0200 | [diff] [blame] | 835 | static inline void perf_counter_free_task(struct task_struct *task) { } |
Peter Zijlstra | 925d519 | 2009-03-30 19:07:02 +0200 | [diff] [blame] | 836 | static inline void perf_counter_do_pending(void) { } |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 837 | static inline void perf_counter_print_debug(void) { } |
Peter Zijlstra | 9e35ad3 | 2009-05-13 16:21:38 +0200 | [diff] [blame] | 838 | static inline void perf_disable(void) { } |
| 839 | static inline void perf_enable(void) { } |
Ingo Molnar | 1d1c7dd | 2008-12-11 14:59:31 +0100 | [diff] [blame] | 840 | static inline int perf_counter_task_disable(void) { return -EINVAL; } |
| 841 | static inline int perf_counter_task_enable(void) { return -EINVAL; } |
Peter Zijlstra | 15dbf27 | 2009-03-13 12:21:32 +0100 | [diff] [blame] | 842 | |
Peter Zijlstra | 925d519 | 2009-03-30 19:07:02 +0200 | [diff] [blame] | 843 | static inline void |
Peter Zijlstra | 78f13e9 | 2009-04-08 15:01:33 +0200 | [diff] [blame] | 844 | perf_swcounter_event(u32 event, u64 nr, int nmi, |
| 845 | struct pt_regs *regs, u64 addr) { } |
Peter Zijlstra | 0a4a939 | 2009-03-30 19:07:05 +0200 | [diff] [blame] | 846 | |
Peter Zijlstra | 089dd79 | 2009-06-05 14:04:55 +0200 | [diff] [blame] | 847 | static inline void perf_counter_mmap(struct vm_area_struct *vma) { } |
Peter Zijlstra | 8d1b2d9 | 2009-04-08 15:01:30 +0200 | [diff] [blame] | 848 | static inline void perf_counter_comm(struct task_struct *tsk) { } |
Peter Zijlstra | 60313eb | 2009-06-04 16:53:44 +0200 | [diff] [blame] | 849 | static inline void perf_counter_fork(struct task_struct *tsk) { } |
Ingo Molnar | 0d905bc | 2009-05-04 19:13:30 +0200 | [diff] [blame] | 850 | static inline void perf_counter_init(void) { } |
Markus Metzger | 5622f29 | 2009-09-15 13:00:23 +0200 | [diff] [blame] | 851 | |
| 852 | static inline int |
| 853 | perf_output_begin(struct perf_output_handle *handle, struct perf_counter *c, |
| 854 | unsigned int size, int nmi, int sample) { } |
| 855 | static inline void perf_output_end(struct perf_output_handle *handle) { } |
| 856 | static inline void |
| 857 | perf_output_copy(struct perf_output_handle *handle, |
| 858 | const void *buf, unsigned int len) { } |
| 859 | static inline void |
| 860 | perf_output_sample(struct perf_output_handle *handle, |
| 861 | struct perf_event_header *header, |
| 862 | struct perf_sample_data *data, |
| 863 | struct perf_counter *counter) { } |
| 864 | static inline void |
| 865 | perf_prepare_sample(struct perf_event_header *header, |
| 866 | struct perf_sample_data *data, |
| 867 | struct perf_counter *counter, |
| 868 | struct pt_regs *regs) { } |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 869 | #endif |
| 870 | |
Markus Metzger | 5622f29 | 2009-09-15 13:00:23 +0200 | [diff] [blame] | 871 | #define perf_output_put(handle, x) \ |
| 872 | perf_output_copy((handle), &(x), sizeof(x)) |
| 873 | |
Paul Mackerras | f3dfd26 | 2009-02-26 22:43:46 +1100 | [diff] [blame] | 874 | #endif /* __KERNEL__ */ |
Thomas Gleixner | 0793a61 | 2008-12-04 20:12:29 +0100 | [diff] [blame] | 875 | #endif /* _LINUX_PERF_COUNTER_H */ |