perf probe: Support --del option
Support perf probe --del <event> option. Currently,
perf probe can have only one event for each --del option.
If you'd like to delete several probe events, you need
to specify --del for each events.
Signed-off-by: Masami Hiramatsu <mhiramat@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: Frederic Weisbecker <fweisbec@gmail.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: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: systemtap <systemtap@sources.redhat.com>
Cc: DLE <dle-develop@lists.sourceforge.net>
LKML-Reference: <20091208220323.10142.62079.stgit@dhcp-100-2-132.bos.redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/tools/perf/builtin-probe.c b/tools/perf/builtin-probe.c
index 1c97e13..5a47c1e 100644
--- a/tools/perf/builtin-probe.c
+++ b/tools/perf/builtin-probe.c
@@ -35,6 +35,7 @@
#include "perf.h"
#include "builtin.h"
#include "util/util.h"
+#include "util/strlist.h"
#include "util/event.h"
#include "util/debug.h"
#include "util/parse-options.h"
@@ -61,6 +62,7 @@
int need_dwarf;
int nr_probe;
struct probe_point probes[MAX_PROBES];
+ struct strlist *dellist;
} session;
static bool listing;
@@ -107,6 +109,17 @@
return 0;
}
+static int opt_del_probe_event(const struct option *opt __used,
+ const char *str, int unset __used)
+{
+ if (str) {
+ if (!session.dellist)
+ session.dellist = strlist__new(true, NULL);
+ strlist__add(session.dellist, str);
+ }
+ return 0;
+}
+
#ifndef NO_LIBDWARF
static int open_default_vmlinux(void)
{
@@ -141,6 +154,7 @@
static const char * const probe_usage[] = {
"perf probe [<options>] 'PROBEDEF' ['PROBEDEF' ...]",
"perf probe [<options>] --add 'PROBEDEF' [--add 'PROBEDEF' ...]",
+ "perf probe [<options>] --del '[GROUP:]EVENT' ...",
"perf probe --list",
NULL
};
@@ -152,7 +166,9 @@
OPT_STRING('k', "vmlinux", &session.vmlinux, "file",
"vmlinux/module pathname"),
#endif
- OPT_BOOLEAN('l', "list", &listing, "list up current probes"),
+ OPT_BOOLEAN('l', "list", &listing, "list up current probe events"),
+ OPT_CALLBACK('d', "del", NULL, "[GROUP:]EVENT", "delete a probe event.",
+ opt_del_probe_event),
OPT_CALLBACK('a', "add", NULL,
#ifdef NO_LIBDWARF
"FUNC[+OFFS|%return] [ARG ...]",
@@ -191,15 +207,26 @@
if (argc > 0)
parse_probe_event_argv(argc, argv);
- if ((session.nr_probe == 0 && !listing) ||
- (session.nr_probe != 0 && listing))
+ if ((session.nr_probe == 0 && !session.dellist && !listing))
usage_with_options(probe_usage, options);
if (listing) {
+ if (session.nr_probe != 0 || session.dellist) {
+ pr_warning(" Error: Don't use --list with"
+ " --add/--del.\n");
+ usage_with_options(probe_usage, options);
+ }
show_perf_probe_events();
return 0;
}
+ if (session.dellist) {
+ del_trace_kprobe_events(session.dellist);
+ strlist__delete(session.dellist);
+ if (session.nr_probe == 0)
+ return 0;
+ }
+
if (session.need_dwarf)
#ifdef NO_LIBDWARF
die("Debuginfo-analysis is not supported");
