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perf evlist: Add toggle_enable() method 

For an upcoming feature in 'perf top' we will have a hotkey to
enable/disable events, so remember if the events in the list are
enabled or disabled and allows toggling this state using a new
method.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: David Ahern <dsahern@gmail.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-64c4jvdl5feg2zhimxvokqka@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo 2015-06-17 16:40:26 -03:00
parent 7951722da2
commit 2b56bcfb6f
2 changed files with 11 additions and 0 deletions
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9
tools/perf/util/evlist.c
View File

@ -297,6 +297,8 @@ void perf_evlist__disable(struct perf_evlist *evlist)
PERF_EVENT_IOC_DISABLE, 0);
}
}
evlist->enabled = false;
}
void perf_evlist__enable(struct perf_evlist *evlist)
@ -316,6 +318,13 @@ void perf_evlist__enable(struct perf_evlist *evlist)
PERF_EVENT_IOC_ENABLE, 0);
}
}
evlist->enabled = true;
}
void perf_evlist__toggle_enable(struct perf_evlist *evlist)
{
(evlist->enabled ? perf_evlist__disable : perf_evlist__enable)(evlist);
}
int perf_evlist__disable_event(struct perf_evlist *evlist,

2
tools/perf/util/evlist.h
View File

@ -41,6 +41,7 @@ struct perf_evlist {
int nr_groups;
int nr_mmaps;
bool overwrite;
bool enabled;
size_t mmap_len;
int id_pos;
int is_pos;
@ -139,6 +140,7 @@ void perf_evlist__munmap(struct perf_evlist *evlist);
void perf_evlist__disable(struct perf_evlist *evlist);
void perf_evlist__enable(struct perf_evlist *evlist);
void perf_evlist__toggle_enable(struct perf_evlist *evlist);
int perf_evlist__disable_event(struct perf_evlist *evlist,
struct perf_evsel *evsel);