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author | Ingo Molnar <mingo@elte.hu> | 2009-06-06 18:33:43 (GMT) |
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committer | Ingo Molnar <mingo@elte.hu> | 2009-06-06 18:33:43 (GMT) |
commit | 864709302a80f26fa9da3be5b47304f0b8bae192 (patch) | |
tree | 8c2bab78f141fe43a38914bd3e3aae0a88f958e5 /tools/perf/perf.h | |
parent | 75b5032212641f6d38ac041416945e70da833b68 (diff) | |
download | linux-864709302a80f26fa9da3be5b47304f0b8bae192.tar.xz |
perf_counter tools: Move from Documentation/perf_counter/ to tools/perf/
Several people have suggested that 'perf' has become a full-fledged
tool that should be moved out of Documentation/. Move it to the
(new) tools/ directory.
Cc: 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>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'tools/perf/perf.h')
-rw-r--r-- | tools/perf/perf.h | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/tools/perf/perf.h b/tools/perf/perf.h new file mode 100644 index 0000000..af0a504 --- /dev/null +++ b/tools/perf/perf.h @@ -0,0 +1,67 @@ +#ifndef _PERF_PERF_H +#define _PERF_PERF_H + +#if defined(__x86_64__) || defined(__i386__) +#include "../../arch/x86/include/asm/unistd.h" +#define rmb() asm volatile("lfence" ::: "memory") +#define cpu_relax() asm volatile("rep; nop" ::: "memory"); +#endif + +#ifdef __powerpc__ +#include "../../arch/powerpc/include/asm/unistd.h" +#define rmb() asm volatile ("sync" ::: "memory") +#define cpu_relax() asm volatile ("" ::: "memory"); +#endif + +#include <time.h> +#include <unistd.h> +#include <sys/types.h> +#include <sys/syscall.h> + +#include "../../include/linux/perf_counter.h" + +/* + * prctl(PR_TASK_PERF_COUNTERS_DISABLE) will (cheaply) disable all + * counters in the current task. + */ +#define PR_TASK_PERF_COUNTERS_DISABLE 31 +#define PR_TASK_PERF_COUNTERS_ENABLE 32 + +#ifndef NSEC_PER_SEC +# define NSEC_PER_SEC 1000000000ULL +#endif + +static inline unsigned long long rdclock(void) +{ + struct timespec ts; + + clock_gettime(CLOCK_MONOTONIC, &ts); + return ts.tv_sec * 1000000000ULL + ts.tv_nsec; +} + +/* + * Pick up some kernel type conventions: + */ +#define __user +#define asmlinkage + +#define unlikely(x) __builtin_expect(!!(x), 0) +#define min(x, y) ({ \ + typeof(x) _min1 = (x); \ + typeof(y) _min2 = (y); \ + (void) (&_min1 == &_min2); \ + _min1 < _min2 ? _min1 : _min2; }) + +static inline int +sys_perf_counter_open(struct perf_counter_attr *attr_uptr, + pid_t pid, int cpu, int group_fd, + unsigned long flags) +{ + return syscall(__NR_perf_counter_open, attr_uptr, pid, cpu, + group_fd, flags); +} + +#define MAX_COUNTERS 256 +#define MAX_NR_CPUS 256 + +#endif |