lkml.org 
[lkml]   [2020]   [May]   [12]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH V7 14/15] perf script: Add option --show-text-poke-events
Date
Consistent with other new events, add an option to perf script to display
text poke events and ksymbol events. Both text poke events and ksymbol
events are displayed because some text pokes (e.g. ftrace trampolines) have
corresponding ksymbol events.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
---
tools/perf/Documentation/perf-script.txt | 4 ++++
tools/perf/builtin-script.c | 19 +++++++++++++++++++
2 files changed, 23 insertions(+)

diff --git a/tools/perf/Documentation/perf-script.txt b/tools/perf/Documentation/perf-script.txt
index 372dfd110e6d..4f712fb8f175 100644
--- a/tools/perf/Documentation/perf-script.txt
+++ b/tools/perf/Documentation/perf-script.txt
@@ -322,6 +322,10 @@ OPTIONS
--show-cgroup-events
Display cgroup events i.e. events of type PERF_RECORD_CGROUP.

+--show-text-poke-events
+ Display text poke events i.e. events of type PERF_RECORD_TEXT_POKE and
+ PERF_RECORD_KSYMBOL.
+
--demangle::
Demangle symbol names to human readable form. It's enabled by default,
disable with --no-demangle.
diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c
index ecc8bd4c5e57..35ed8f69ed6a 100644
--- a/tools/perf/builtin-script.c
+++ b/tools/perf/builtin-script.c
@@ -1678,6 +1678,7 @@ struct perf_script {
bool show_round_events;
bool show_bpf_events;
bool show_cgroup_events;
+ bool show_text_poke_events;
bool allocated;
bool per_event_dump;
bool stitch_lbr;
@@ -2321,6 +2322,18 @@ process_bpf_events(struct perf_tool *tool __maybe_unused,
sample->tid);
}

+static int process_text_poke_events(struct perf_tool *tool,
+ union perf_event *event,
+ struct perf_sample *sample,
+ struct machine *machine)
+{
+ if (perf_event__process_text_poke(tool, event, sample, machine) < 0)
+ return -1;
+
+ return print_event(tool, event, sample, machine, sample->pid,
+ sample->tid);
+}
+
static void sig_handler(int sig __maybe_unused)
{
session_done = 1;
@@ -2429,6 +2442,10 @@ static int __cmd_script(struct perf_script *script)
script->tool.ksymbol = process_bpf_events;
script->tool.bpf = process_bpf_events;
}
+ if (script->show_text_poke_events) {
+ script->tool.ksymbol = process_bpf_events;
+ script->tool.text_poke = process_text_poke_events;
+ }

if (perf_script__setup_per_event_dump(script)) {
pr_err("Couldn't create the per event dump files\n");
@@ -3460,6 +3477,8 @@ int cmd_script(int argc, const char **argv)
"Show round events (if recorded)"),
OPT_BOOLEAN('\0', "show-bpf-events", &script.show_bpf_events,
"Show bpf related events (if recorded)"),
+ OPT_BOOLEAN('\0', "show-text-poke-events", &script.show_text_poke_events,
+ "Show text poke related events (if recorded)"),
OPT_BOOLEAN('\0', "per-event-dump", &script.per_event_dump,
"Dump trace output to files named by the monitored events"),
OPT_BOOLEAN('f', "force", &symbol_conf.force, "don't complain, do it"),
--
2.17.1
\
 
 \ /
  Last update: 2020-05-12 14:20    [W:0.325 / U:0.304 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site