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authorIngo Molnar <mingo@elte.hu>2009-06-06 22:33:43 +0400
committerIngo Molnar <mingo@elte.hu>2009-06-06 22:33:43 +0400
commit864709302a80f26fa9da3be5b47304f0b8bae192 (patch)
tree8c2bab78f141fe43a38914bd3e3aae0a88f958e5 /tools/perf/perf.h
parent75b5032212641f6d38ac041416945e70da833b68 (diff)
downloadlinux-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.h67
1 files changed, 67 insertions, 0 deletions
diff --git a/tools/perf/perf.h b/tools/perf/perf.h
new file mode 100644
index 000000000000..af0a5046d743
--- /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