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perf evlist: Introduce add_newtp method

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To reduce the boilerplate of creating and adding a new tracepoint to an
evlist.

Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-4z90i79gnmsza2czv2dhdrb7@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo 2012-10-03 11:40:22 -03:00
parent de332ac40f
commit 39876e7dd3
3 changed files with 20 additions and 15 deletions
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18
tools/perf/builtin-trace.c
View File

@ -200,24 +200,12 @@ static int trace__run(struct trace *trace)
goto out;
}
evsel = perf_evsel__newtp("raw_syscalls", "sys_enter", 0);
if (evsel == NULL) {
printf("Couldn't read the raw_syscalls:sys_enter tracepoint information!\n");
if (perf_evlist__add_newtp(evlist, "raw_syscalls", "sys_enter", trace__sys_enter) ||
perf_evlist__add_newtp(evlist, "raw_syscalls", "sys_exit", trace__sys_exit)) {
printf("Couldn't read the raw_syscalls tracepoints information!\n");
goto out_delete_evlist;
}
evsel->handler.func = trace__sys_enter;
perf_evlist__add(evlist, evsel);
evsel = perf_evsel__newtp("raw_syscalls", "sys_exit", 1);
if (evsel == NULL) {
printf("Couldn't read the raw_syscalls:sys_exit tracepoint information!\n");
goto out_delete_evlist;
}
evsel->handler.func = trace__sys_exit;
perf_evlist__add(evlist, evsel);
err = perf_evlist__create_maps(evlist, &trace->opts.target);
if (err < 0) {
printf("Problems parsing the target to trace, check your options!\n");

14
tools/perf/util/evlist.c
View File

@ -285,6 +285,20 @@ out:
return err;
}
int perf_evlist__add_newtp(struct perf_evlist *evlist,
const char *sys, const char *name, void *handler)
{
struct perf_evsel *evsel;
evsel = perf_evsel__newtp(sys, name, evlist->nr_entries);
if (evsel == NULL)
return -1;
evsel->handler.func = handler;
perf_evlist__add(evlist, evsel);
return 0;
}
void perf_evlist__disable(struct perf_evlist *evlist)
{
int cpu, thread;

3
tools/perf/util/evlist.h
View File

@ -72,6 +72,9 @@ int perf_evlist__set_tracepoints_handlers(struct perf_evlist *evlist,
#define perf_evlist__set_tracepoints_handlers_array(evlist, array) \
perf_evlist__set_tracepoints_handlers(evlist, array, ARRAY_SIZE(array))
int perf_evlist__add_newtp(struct perf_evlist *evlist,
const char *sys, const char *name, void *handler);
int perf_evlist__set_filter(struct perf_evlist *evlist, const char *filter);
struct perf_evsel *