Into perf-sys.h header, as requested by Peter: http://lkml.kernel.org/r/[email protected]
Adding HAVE_ATTR_TEST define to turn off/on the attribute test code in the sys_perf_event_open function. Requested-by: Peter Zijlstra <[email protected]> Cc: Arnaldo Carvalho de Melo <[email protected]> Cc: Borislav Petkov <[email protected]> Cc: Corey Ashford <[email protected]> Cc: David Ahern <[email protected]> Cc: Frederic Weisbecker <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Paul Mackerras <[email protected]> Cc: Peter Zijlstra <[email protected]> Signed-off-by: Jiri Olsa <[email protected]> --- tools/perf/perf-sys.h | 22 ++++++++++++++++++++++ tools/perf/perf.h | 40 +++++++++++----------------------------- 2 files changed, 33 insertions(+), 29 deletions(-) diff --git a/tools/perf/perf-sys.h b/tools/perf/perf-sys.h index 4c22c2a..5268a14 100644 --- a/tools/perf/perf-sys.h +++ b/tools/perf/perf-sys.h @@ -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 */ diff --git a/tools/perf/perf.h b/tools/perf/perf.h index ee95965..813571b 100644 --- a/tools/perf/perf.h +++ b/tools/perf/perf.h @@ -1,18 +1,21 @@ #ifndef _PERF_PERF_H #define _PERF_PERF_H -#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 <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)) + #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; -- 1.8.3.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
