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perf tools: Move sys_perf_event_open function from perf.h 

Into perf-sys.h header, as requested by Peter:
  http://lkml.kernel.org/r/20140502115201.GI30445@twins.programming.kicks-ass.net

Adding HAVE_ATTR_TEST define to turn off/on the attribute
test code in the sys_perf_event_open function.

Requested-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Borislav Petkov <bp@suse.de>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1399293219-8732-10-git-send-email-jolsa@kernel.org
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
hifive-unleashed-5.1
Jiri Olsa 2014-05-05 12:58:31 +02:00
parent 43599d1f7a
commit 82baa0eb46
2 changed files with 33 additions and 29 deletions
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22
tools/perf/perf-sys.h
View File

@ -1,6 +1,11 @@
#ifndef _PERF_SYS_H
#define _PERF_SYS_H
#include <unistd.h>
#include <sys/types.h>
#include <sys/syscall.h>
#include <linux/types.h>
#include <linux/perf_event.h>
#include <asm/unistd.h>
#if defined(__i386__)
@ -165,4 +170,21 @@
#define cpu_relax() barrier()
#endif
static inline int
sys_perf_event_open(struct perf_event_attr *attr,
pid_t pid, int cpu, int group_fd,
unsigned long flags)
{
int fd;
fd = syscall(__NR_perf_event_open, attr, pid, cpu,
group_fd, flags);
#ifdef HAVE_ATTR_TEST
if (unlikely(test_attr__enabled))
test_attr__open(attr, pid, cpu, fd, group_fd, flags);
#endif
return fd;
}
#endif /* _PERF_SYS_H */

40
tools/perf/perf.h
View File

@ -1,18 +1,21 @@
#ifndef _PERF_PERF_H
#define _PERF_PERF_H
#include <time.h>
#include <stdbool.h>
#include <linux/types.h>
#include <linux/perf_event.h>
extern bool test_attr__enabled;
void test_attr__init(void);
void test_attr__open(struct perf_event_attr *attr, pid_t pid, int cpu,
int fd, int group_fd, unsigned long flags);
#define HAVE_ATTR_TEST
#include "perf-sys.h"
#define ACCESS_ONCE(x) (*(volatile typeof(x) *)&(x))
#include <time.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/syscall.h>
#include <linux/types.h>
#include <linux/perf_event.h>
#ifndef NSEC_PER_SEC
# define NSEC_PER_SEC 1000000000ULL
#endif
@ -28,27 +31,6 @@ static inline unsigned long long rdclock(void)
return ts.tv_sec * 1000000000ULL + ts.tv_nsec;
}
extern bool test_attr__enabled;
void test_attr__init(void);
void test_attr__open(struct perf_event_attr *attr, pid_t pid, int cpu,
int fd, int group_fd, unsigned long flags);
static inline int
sys_perf_event_open(struct perf_event_attr *attr,
pid_t pid, int cpu, int group_fd,
unsigned long flags)
{
int fd;
fd = syscall(__NR_perf_event_open, attr, pid, cpu,
group_fd, flags);
if (unlikely(test_attr__enabled))
test_attr__open(attr, pid, cpu, fd, group_fd, flags);
return fd;
}
#define MAX_NR_CPUS 256
extern const char *input_name;