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perf tools: Support tracepoint glob matching

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Support glob wildcard when selecting tracepoint events by -e
option. Without this patch, perf-tools supports 'GROUP:*:record'
syntax for selecting all tracepoints under GROUP group.

With this patch, user can choose tracepoints more flexibly by using
partial wildcards, e.g. 'block:*bio*:record'.

Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: systemtap <systemtap@sources.redhat.com>
Cc: DLE <dle-develop@lists.sourceforge.net>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Mike Galbraith <efault@gmx.de>
LKML-Reference: <20100105224717.19431.68972.stgit@dhcp-100-2-132.bos.redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Masami Hiramatsu 2010-01-05 17:47:17 -05:00 committed by Ingo Molnar
parent 72041334b8
commit fb1d2edf7e
1 changed files with 8 additions and 3 deletions
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11
tools/perf/util/parse-events.c
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@ -450,7 +450,8 @@ parse_single_tracepoint_event(char *sys_name,
/* sys + ':' + event + ':' + flags*/
#define MAX_EVOPT_LEN (MAX_EVENT_LENGTH * 2 + 2 + 128)
static enum event_result
parse_subsystem_tracepoint_event(char *sys_name, char *flags)
parse_multiple_tracepoint_event(char *sys_name, const char *evt_exp,
char *flags)
{
char evt_path[MAXPATHLEN];
struct dirent *evt_ent;
@ -474,6 +475,9 @@ parse_subsystem_tracepoint_event(char *sys_name, char *flags)
|| !strcmp(evt_ent->d_name, "filter"))
continue;
if (!strglobmatch(evt_ent->d_name, evt_exp))
continue;
len = snprintf(event_opt, MAX_EVOPT_LEN, "%s:%s%s%s", sys_name,
evt_ent->d_name, flags ? ":" : "",
flags ?: "");
@ -522,9 +526,10 @@ static enum event_result parse_tracepoint_event(const char **strp,
if (evt_length >= MAX_EVENT_LENGTH)
return EVT_FAILED;
if (!strcmp(evt_name, "*")) {
if (strpbrk(evt_name, "*?")) {
*strp = evt_name + evt_length;
return parse_subsystem_tracepoint_event(sys_name, flags);
return parse_multiple_tracepoint_event(sys_name, evt_name,
flags);
} else
return parse_single_tracepoint_event(sys_name, evt_name,
evt_length, flags,