linux/tools/perf/util/target.h
Namhyung Kim d1cb9fce92 perf target: Add uses_mmap field
If perf doesn't mmap on event (like perf stat), it should not create
per-task-per-cpu events. So just use a dummy cpu map to create a
per-task event for this case.

Signed-off-by: Namhyung Kim <namhyung.kim@lge.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1337161549-9870-3-git-send-email-namhyung.kim@lge.com
[ committer note: renamed .need_mmap to .uses_mmap ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2012-05-17 12:32:54 -03:00

66 lines
1.7 KiB
C

#ifndef _PERF_TARGET_H
#define _PERF_TARGET_H
#include <stdbool.h>
#include <sys/types.h>
struct perf_target {
const char *pid;
const char *tid;
const char *cpu_list;
const char *uid_str;
uid_t uid;
bool system_wide;
bool uses_mmap;
};
enum perf_target_errno {
PERF_ERRNO_TARGET__SUCCESS = 0,
/*
* Choose an arbitrary negative big number not to clash with standard
* errno since SUS requires the errno has distinct positive values.
* See 'Issue 6' in the link below.
*
* http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/errno.h.html
*/
__PERF_ERRNO_TARGET__START = -10000,
/* for perf_target__validate() */
PERF_ERRNO_TARGET__PID_OVERRIDE_CPU = __PERF_ERRNO_TARGET__START,
PERF_ERRNO_TARGET__PID_OVERRIDE_UID,
PERF_ERRNO_TARGET__UID_OVERRIDE_CPU,
PERF_ERRNO_TARGET__PID_OVERRIDE_SYSTEM,
PERF_ERRNO_TARGET__UID_OVERRIDE_SYSTEM,
/* for perf_target__parse_uid() */
PERF_ERRNO_TARGET__INVALID_UID,
PERF_ERRNO_TARGET__USER_NOT_FOUND,
__PERF_ERRNO_TARGET__END,
};
enum perf_target_errno perf_target__validate(struct perf_target *target);
enum perf_target_errno perf_target__parse_uid(struct perf_target *target);
int perf_target__strerror(struct perf_target *target, int errnum, char *buf,
size_t buflen);
static inline bool perf_target__has_task(struct perf_target *target)
{
return target->tid || target->pid || target->uid_str;
}
static inline bool perf_target__has_cpu(struct perf_target *target)
{
return target->system_wide || target->cpu_list;
}
static inline bool perf_target__none(struct perf_target *target)
{
return !perf_target__has_task(target) && !perf_target__has_cpu(target);
}
#endif /* _PERF_TARGET_H */