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Date: Mon, 7 Sep 2015 01:12:46 +0000
From: 平松雅巳 / HIRAMATU，MASAMI
<masami.hiramatsu.pt@...achi.com>
To: "'Namhyung Kim'" <namhyung@...nel.org>,
Arnaldo Carvalho de Melo <acme@...nel.org>
CC: Ingo Molnar <mingo@...nel.org>,
Peter Zijlstra <a.p.zijlstra@...llo.nl>,
Jiri Olsa <jolsa@...hat.com>,
LKML <linux-kernel@...r.kernel.org>,
Wang Nan <wangnan0@...wei.com>,
"pi3orama@....com" <pi3orama@....com>
Subject: RE: [PATCH v2 5/5] perf probe: Print deleted events in cmd_probe()
>From: Namhyung Kim [mailto:namhyung@...il.com] On Behalf Of Namhyung Kim
>
>Showing actual trace event when deleteing perf events is only needed in
>perf probe command. But the add functionality itself can be used by
>other places. So move the printing code into the cmd_probe().
>
>The output is not changed.
>
Looks good to me :)
Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>
Thanks!
>Cc: Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>
>Signed-off-by: Namhyung Kim <namhyung@...nel.org>
>---
> tools/perf/builtin-probe.c | 62 ++++++++++++++++++++++++++++++++++++++++++-
> tools/perf/util/probe-event.c | 5 ----
> tools/perf/util/probe-event.h | 1 +
> tools/perf/util/probe-file.c | 7 +++--
> tools/perf/util/probe-file.h | 4 +++
> 5 files changed, 69 insertions(+), 10 deletions(-)
>
>diff --git a/tools/perf/builtin-probe.c b/tools/perf/builtin-probe.c
>index b8cf6cb7e1bf..ee2c46d8353e 100644
>--- a/tools/perf/builtin-probe.c
>+++ b/tools/perf/builtin-probe.c
>@@ -41,6 +41,7 @@
> #include "util/parse-options.h"
> #include "util/probe-finder.h"
> #include "util/probe-event.h"
>+#include "util/probe-file.h"
>
> #define DEFAULT_VAR_FILTER "!__k???tab_* & !__crc_*"
> #define DEFAULT_FUNC_FILTER "!_*"
>@@ -357,6 +358,65 @@ out_cleanup:
> return ret;
> }
>
>+static int perf_del_probe_events(struct strfilter *filter)
>+{
>+ int ret, ret2, ufd = -1, kfd = -1;
>+ char *str = strfilter__string(filter);
>+ struct strlist *klist = NULL, *ulist = NULL;
>+ struct str_node *ent;
>+
>+ if (!str)
>+ return -EINVAL;
>+
>+ pr_debug("Delete filter: \'%s\'\n", str);
>+
>+ /* Get current event names */
>+ ret = probe_file__open_both(&kfd, &ufd, PF_FL_RW);
>+ if (ret < 0)
>+ goto out;
>+
>+ klist = strlist__new(NULL, NULL);
>+ if (!klist)
>+ return -ENOMEM;
>+
>+ ret = probe_file__get_events(kfd, filter, klist);
>+ if (ret == 0) {
>+ strlist__for_each(ent, klist)
>+ pr_info("Removed event: %s\n", ent->s);
>+
>+ ret = probe_file__del_strlist(kfd, klist);
>+ if (ret < 0)
>+ goto error;
>+ }
>+
>+ ret2 = probe_file__get_events(ufd, filter, ulist);
>+ if (ret2 == 0) {
>+ strlist__for_each(ent, ulist)
>+ pr_info("Removed event: %s\n", ent->s);
>+
>+ ret2 = probe_file__del_strlist(ufd, ulist);
>+ if (ret2 < 0)
>+ goto error;
>+ }
>+
>+ if (ret == -ENOENT && ret2 == -ENOENT)
>+ pr_debug("\"%s\" does not hit any event.\n", str);
>+ /* Note that this is silently ignored */
>+ ret = 0;
>+
>+error:
>+ if (kfd >= 0)
>+ close(kfd);
>+ if (ufd >= 0)
>+ close(ufd);
>+out:
>+ strlist__delete(klist);
>+ strlist__delete(ulist);
>+ free(str);
>+
>+ return ret;
>+}
>+
> static int
> __cmd_probe(int argc, const char **argv, const char *prefix __maybe_unused)
> {
>@@ -529,7 +589,7 @@ __cmd_probe(int argc, const char **argv, const char *prefix __maybe_unused)
> return ret;
> #endif
> case 'd':
>- ret = del_perf_probe_events(params.filter);
>+ ret = perf_del_probe_events(params.filter);
> if (ret < 0) {
> pr_err_with_code(" Error: Failed to delete events.", ret);
> return ret;
>diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c
>index 01b9a5bd9449..3da9e1c792fa 100644
>--- a/tools/perf/util/probe-event.c
>+++ b/tools/perf/util/probe-event.c
>@@ -2819,8 +2819,6 @@ int del_perf_probe_events(struct strfilter *filter)
> if (!str)
> return -EINVAL;
>
>- pr_debug("Delete filter: \'%s\'\n", str);
>-
> /* Get current event names */
> ret = probe_file__open_both(&kfd, &ufd, PF_FL_RW);
> if (ret < 0)
>@@ -2835,9 +2833,6 @@ int del_perf_probe_events(struct strfilter *filter)
> ret = ret2;
> goto error;
> }
>- if (ret == -ENOENT && ret2 == -ENOENT)
>- pr_debug("\"%s\" does not hit any event.\n", str);
>- /* Note that this is silently ignored */
> ret = 0;
>
> error:
>diff --git a/tools/perf/util/probe-event.h b/tools/perf/util/probe-event.h
>index 610f743671e1..9bcea36359f2 100644
>--- a/tools/perf/util/probe-event.h
>+++ b/tools/perf/util/probe-event.h
>@@ -144,6 +144,7 @@ extern int convert_perf_probe_events(struct perf_probe_event *pevs, int npevs);
> extern int apply_perf_probe_events(struct perf_probe_event *pevs, int npevs);
> extern void cleanup_perf_probe_events(struct perf_probe_event *pevs, int npevs);
> extern int del_perf_probe_events(struct strfilter *filter);
>+
> extern int show_perf_probe_event(const char *group, const char *event,
> struct perf_probe_event *pev,
> const char *module, bool use_stdout);
>diff --git a/tools/perf/util/probe-file.c b/tools/perf/util/probe-file.c
>index f00b0df56dfe..38c0a62039cc 100644
>--- a/tools/perf/util/probe-file.c
>+++ b/tools/perf/util/probe-file.c
>@@ -267,7 +267,6 @@ static int __del_trace_probe_event(int fd, struct str_node *ent)
> goto error;
> }
>
>- pr_info("Removed event: %s\n", ent->s);
> return 0;
> error:
> pr_warning("Failed to delete event: %s\n",
>@@ -275,8 +274,8 @@ error:
> return ret;
> }
>
>-static int probe_file__get_events(int fd, struct strfilter *filter,
>- struct strlist *plist)
>+int probe_file__get_events(int fd, struct strfilter *filter,
>+ struct strlist *plist)
> {
> struct strlist *namelist;
> struct str_node *ent;
>@@ -300,7 +299,7 @@ static int probe_file__get_events(int fd, struct strfilter *filter,
> return ret;
> }
>
>-static int probe_file__del_strlist(int fd, struct strlist *namelist)
>+int probe_file__del_strlist(int fd, struct strlist *namelist)
> {
> int ret = 0;
> struct str_node *ent;
>diff --git a/tools/perf/util/probe-file.h b/tools/perf/util/probe-file.h
>index ada94a242a17..18ac9cf51c34 100644
>--- a/tools/perf/util/probe-file.h
>+++ b/tools/perf/util/probe-file.h
>@@ -14,5 +14,9 @@ struct strlist *probe_file__get_namelist(int fd);
> struct strlist *probe_file__get_rawlist(int fd);
> int probe_file__add_event(int fd, struct probe_trace_event *tev);
> int probe_file__del_events(int fd, struct strfilter *filter);
>+int probe_file__get_events(int fd, struct strfilter *filter,
>+ struct strlist *plist);
>+int probe_file__del_strlist(int fd, struct strlist *namelist);
>+
>
> #endif
>--
>2.5.0
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