xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

perf probe: Reject second attempt of adding same-name event

Browse Source 
Reject second attempt of adding same-name event. This patch
also provides --force option which allows user to add additional
probe events on the same-name event.

e.g.
(the first attempt : success)
 ./perf probe schedule
 Added new event:
   probe:schedule                           (on schedule+0)

(the second attempt : failure)
 ./perf probe schedule:11
 Error: event "schedule" already exists. (Use -f to force duplicates.)
   Fatal: Can't add new event.

(the second attempt with -f : successfully added)
 ./perf probe -f schedule:11
 Added new event:
   probe:schedule_1                         (on schedule+45)

Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Jim Keniston <jkenisto@us.ibm.com>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Frank Ch. Eigler <fche@redhat.com>
Cc: Jason Baron <jbaron@redhat.com>
Cc: K.Prasad <prasad@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: systemtap <systemtap@sources.redhat.com>
Cc: DLE <dle-develop@lists.sourceforge.net>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
LKML-Reference: <20091215153225.17436.15166.stgit@dhcp-100-2-132.bos.redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Masami Hiramatsu
2009-12-15 10:32:25 -05:00
committed by Ingo Molnar
parent af663d75a6
commit d761b08bff
3 changed files with 28 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
tools/perf/builtin-probe.c
View File

@@ -61,6 +61,7 @@ static struct {
char *release;
bool need_dwarf;
bool list_events;
bool force_add;
int nr_probe;
struct probe_point probes[MAX_PROBES];
struct strlist *dellist;
@@ -192,6 +193,8 @@ static const struct option options[] = {
#endif
"\t\t\tkprobe-tracer argument format.)\n",
opt_add_probe_event),
OPT_BOOLEAN('f', "force", &session.force_add, "forcibly add events"
" with existing name"),
OPT_END()
};
@@ -294,7 +297,8 @@ end_dwarf:
}
/* Settng up probe points */
add_trace_kprobe_events(session.probes, session.nr_probe);
add_trace_kprobe_events(session.probes, session.nr_probe,
session.force_add);
return 0;
}