perf_counter: Better align code
Whitespace and comment bits. Also update copyrights. [ Impact: cleanup ] Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> LKML-Reference: <new-submission>
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Ingo Molnar
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8be6e8f3c3
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a308444ceb
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@ -1,12 +1,13 @@
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/*
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* Performance counters:
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*
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* Copyright(C) 2008, Thomas Gleixner <tglx@linutronix.de>
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* Copyright(C) 2008, Red Hat, Inc., Ingo Molnar
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* Copyright (C) 2008-2009, Thomas Gleixner <tglx@linutronix.de>
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* Copyright (C) 2008-2009, Red Hat, Inc., Ingo Molnar
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* Copyright (C) 2008-2009, Red Hat, Inc., Peter Zijlstra
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*
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* Data type definitions, declarations, prototypes.
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*
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* Started by: Thomas Gleixner and Ingo Molnar
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* Started by: Thomas Gleixner and Ingo Molnar
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*
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* For licencing details see kernel-base/COPYING
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*/
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@ -25,18 +26,19 @@
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* attr.type
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*/
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enum perf_type_id {
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PERF_TYPE_HARDWARE = 0,
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PERF_TYPE_SOFTWARE = 1,
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PERF_TYPE_TRACEPOINT = 2,
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PERF_TYPE_HW_CACHE = 3,
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PERF_TYPE_RAW = 4,
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PERF_TYPE_HARDWARE = 0,
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PERF_TYPE_SOFTWARE = 1,
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PERF_TYPE_TRACEPOINT = 2,
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PERF_TYPE_HW_CACHE = 3,
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PERF_TYPE_RAW = 4,
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PERF_TYPE_MAX, /* non ABI */
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PERF_TYPE_MAX, /* non-ABI */
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};
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/*
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* Generalized performance counter event types, used by the attr.event_id
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* parameter of the sys_perf_counter_open() syscall:
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* Generalized performance counter event types, used by the
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* attr.event_id parameter of the sys_perf_counter_open()
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* syscall:
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*/
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enum perf_hw_id {
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/*
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@ -50,7 +52,7 @@ enum perf_hw_id {
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PERF_COUNT_HW_BRANCH_MISSES = 5,
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PERF_COUNT_HW_BUS_CYCLES = 6,
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PERF_COUNT_HW_MAX, /* non ABI */
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PERF_COUNT_HW_MAX, /* non-ABI */
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};
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/*
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@ -61,29 +63,29 @@ enum perf_hw_id {
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* { accesses, misses }
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*/
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enum perf_hw_cache_id {
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PERF_COUNT_HW_CACHE_L1D = 0,
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PERF_COUNT_HW_CACHE_L1I = 1,
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PERF_COUNT_HW_CACHE_LL = 2,
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PERF_COUNT_HW_CACHE_DTLB = 3,
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PERF_COUNT_HW_CACHE_ITLB = 4,
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PERF_COUNT_HW_CACHE_BPU = 5,
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PERF_COUNT_HW_CACHE_L1D = 0,
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PERF_COUNT_HW_CACHE_L1I = 1,
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PERF_COUNT_HW_CACHE_LL = 2,
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PERF_COUNT_HW_CACHE_DTLB = 3,
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PERF_COUNT_HW_CACHE_ITLB = 4,
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PERF_COUNT_HW_CACHE_BPU = 5,
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PERF_COUNT_HW_CACHE_MAX, /* non ABI */
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PERF_COUNT_HW_CACHE_MAX, /* non-ABI */
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};
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enum perf_hw_cache_op_id {
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PERF_COUNT_HW_CACHE_OP_READ = 0,
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PERF_COUNT_HW_CACHE_OP_WRITE = 1,
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PERF_COUNT_HW_CACHE_OP_PREFETCH = 2,
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PERF_COUNT_HW_CACHE_OP_READ = 0,
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PERF_COUNT_HW_CACHE_OP_WRITE = 1,
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PERF_COUNT_HW_CACHE_OP_PREFETCH = 2,
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PERF_COUNT_HW_CACHE_OP_MAX, /* non ABI */
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PERF_COUNT_HW_CACHE_OP_MAX, /* non-ABI */
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};
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enum perf_hw_cache_op_result_id {
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PERF_COUNT_HW_CACHE_RESULT_ACCESS = 0,
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PERF_COUNT_HW_CACHE_RESULT_MISS = 1,
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PERF_COUNT_HW_CACHE_RESULT_MAX, /* non ABI */
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PERF_COUNT_HW_CACHE_RESULT_MAX, /* non-ABI */
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};
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/*
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@ -93,15 +95,15 @@ enum perf_hw_cache_op_result_id {
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* well):
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*/
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enum perf_sw_ids {
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PERF_COUNT_SW_CPU_CLOCK = 0,
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PERF_COUNT_SW_TASK_CLOCK = 1,
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PERF_COUNT_SW_PAGE_FAULTS = 2,
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PERF_COUNT_SW_CONTEXT_SWITCHES = 3,
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PERF_COUNT_SW_CPU_MIGRATIONS = 4,
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PERF_COUNT_SW_PAGE_FAULTS_MIN = 5,
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PERF_COUNT_SW_PAGE_FAULTS_MAJ = 6,
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PERF_COUNT_SW_CPU_CLOCK = 0,
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PERF_COUNT_SW_TASK_CLOCK = 1,
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PERF_COUNT_SW_PAGE_FAULTS = 2,
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PERF_COUNT_SW_CONTEXT_SWITCHES = 3,
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PERF_COUNT_SW_CPU_MIGRATIONS = 4,
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PERF_COUNT_SW_PAGE_FAULTS_MIN = 5,
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PERF_COUNT_SW_PAGE_FAULTS_MAJ = 6,
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PERF_COUNT_SW_MAX, /* non ABI */
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PERF_COUNT_SW_MAX, /* non-ABI */
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};
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/*
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@ -109,15 +111,15 @@ enum perf_sw_ids {
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* in the overflow packets.
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*/
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enum perf_counter_sample_format {
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PERF_SAMPLE_IP = 1U << 0,
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PERF_SAMPLE_TID = 1U << 1,
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PERF_SAMPLE_TIME = 1U << 2,
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PERF_SAMPLE_ADDR = 1U << 3,
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PERF_SAMPLE_GROUP = 1U << 4,
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PERF_SAMPLE_CALLCHAIN = 1U << 5,
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PERF_SAMPLE_ID = 1U << 6,
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PERF_SAMPLE_CPU = 1U << 7,
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PERF_SAMPLE_PERIOD = 1U << 8,
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PERF_SAMPLE_IP = 1U << 0,
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PERF_SAMPLE_TID = 1U << 1,
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PERF_SAMPLE_TIME = 1U << 2,
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PERF_SAMPLE_ADDR = 1U << 3,
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PERF_SAMPLE_GROUP = 1U << 4,
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PERF_SAMPLE_CALLCHAIN = 1U << 5,
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PERF_SAMPLE_ID = 1U << 6,
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PERF_SAMPLE_CPU = 1U << 7,
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PERF_SAMPLE_PERIOD = 1U << 8,
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};
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/*
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@ -126,9 +128,9 @@ enum perf_counter_sample_format {
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* in increasing order of bit value, after the counter value.
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*/
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enum perf_counter_read_format {
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PERF_FORMAT_TOTAL_TIME_ENABLED = 1U << 0,
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PERF_FORMAT_TOTAL_TIME_RUNNING = 1U << 1,
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PERF_FORMAT_ID = 1U << 2,
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PERF_FORMAT_TOTAL_TIME_ENABLED = 1U << 0,
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PERF_FORMAT_TOTAL_TIME_RUNNING = 1U << 1,
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PERF_FORMAT_ID = 1U << 2,
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};
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/*
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@ -229,12 +231,12 @@ struct perf_counter_mmap_page {
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__u64 data_head; /* head in the data section */
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};
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#define PERF_EVENT_MISC_CPUMODE_MASK (3 << 0)
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#define PERF_EVENT_MISC_CPUMODE_UNKNOWN (0 << 0)
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#define PERF_EVENT_MISC_KERNEL (1 << 0)
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#define PERF_EVENT_MISC_USER (2 << 0)
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#define PERF_EVENT_MISC_HYPERVISOR (3 << 0)
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#define PERF_EVENT_MISC_OVERFLOW (1 << 2)
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#define PERF_EVENT_MISC_CPUMODE_MASK (3 << 0)
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#define PERF_EVENT_MISC_CPUMODE_UNKNOWN (0 << 0)
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#define PERF_EVENT_MISC_KERNEL (1 << 0)
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#define PERF_EVENT_MISC_USER (2 << 0)
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#define PERF_EVENT_MISC_HYPERVISOR (3 << 0)
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#define PERF_EVENT_MISC_OVERFLOW (1 << 2)
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struct perf_event_header {
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__u32 type;
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@ -351,14 +353,14 @@ struct hw_perf_counter {
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#ifdef CONFIG_PERF_COUNTERS
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union {
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struct { /* hardware */
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u64 config;
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unsigned long config_base;
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unsigned long counter_base;
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int idx;
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u64 config;
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unsigned long config_base;
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unsigned long counter_base;
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int idx;
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};
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union { /* software */
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atomic64_t count;
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struct hrtimer hrtimer;
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atomic64_t count;
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struct hrtimer hrtimer;
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};
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};
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atomic64_t prev_count;
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@ -523,37 +525,37 @@ struct perf_counter_context {
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* Protect the states of the counters in the list,
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* nr_active, and the list:
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*/
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spinlock_t lock;
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spinlock_t lock;
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/*
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* Protect the list of counters. Locking either mutex or lock
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* is sufficient to ensure the list doesn't change; to change
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* the list you need to lock both the mutex and the spinlock.
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*/
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struct mutex mutex;
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struct mutex mutex;
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struct list_head counter_list;
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struct list_head event_list;
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int nr_counters;
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int nr_active;
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int is_active;
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atomic_t refcount;
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struct task_struct *task;
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struct list_head counter_list;
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struct list_head event_list;
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int nr_counters;
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int nr_active;
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int is_active;
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atomic_t refcount;
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struct task_struct *task;
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/*
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* Context clock, runs when context enabled.
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*/
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u64 time;
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u64 timestamp;
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u64 time;
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u64 timestamp;
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/*
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* These fields let us detect when two contexts have both
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* been cloned (inherited) from a common ancestor.
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*/
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struct perf_counter_context *parent_ctx;
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u64 parent_gen;
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u64 generation;
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int pin_count;
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struct rcu_head rcu_head;
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struct perf_counter_context *parent_ctx;
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u64 parent_gen;
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u64 generation;
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int pin_count;
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struct rcu_head rcu_head;
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};
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/**
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@ -604,9 +606,9 @@ extern int hw_perf_group_sched_in(struct perf_counter *group_leader,
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extern void perf_counter_update_userpage(struct perf_counter *counter);
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struct perf_sample_data {
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struct pt_regs *regs;
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u64 addr;
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u64 period;
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struct pt_regs *regs;
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u64 addr;
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u64 period;
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};
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extern int perf_counter_overflow(struct perf_counter *counter, int nmi,
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@ -636,11 +638,14 @@ extern void perf_counter_fork(struct task_struct *tsk);
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extern void perf_counter_task_migration(struct task_struct *task, int cpu);
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#define MAX_STACK_DEPTH 255
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#define MAX_STACK_DEPTH 255
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struct perf_callchain_entry {
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u16 nr, hv, kernel, user;
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u64 ip[MAX_STACK_DEPTH];
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u16 nr;
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u16 hv;
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u16 kernel;
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u16 user;
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u64 ip[MAX_STACK_DEPTH];
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};
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extern struct perf_callchain_entry *perf_callchain(struct pt_regs *regs);
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