linux-kernel - [PATCH 18/21] perf script: Add support to display user data ID

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Wed, 24 Jan 2018 12:51:40 +0100
From:   Jiri Olsa <jolsa@...nel.org>
To:     Peter Zijlstra <a.p.zijlstra@...llo.nl>,
        Ingo Molnar <mingo@...nel.org>
Cc:     lkml <linux-kernel@...r.kernel.org>,
        Namhyung Kim <namhyung@...nel.org>,
        David Ahern <dsahern@...il.com>,
        Andi Kleen <ak@...ux.intel.com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Andy Lutomirski <luto@...capital.net>,
        Arnaldo Carvalho de Melo <acme@...nel.org>
Subject: [PATCH 18/21] perf script: Add support to display user data ID

Assing new -F option user_data_id field argument
to display column with user data id for sample.

The new column displays the USER_DATA_ID or N/A
if the sample does not have user data attached
(PERF_RECORD_MISC_USER_DATA bit set)

  $ perf script -F+user_data_id ...
              perf 29014  ... cycles:ppp:              N/A ffffffff870d013d __upda...
   sched-messaging 29014  ... cycles:ppp:                8 ffffffff8741d15a flex_a...
                                   new column _________/

Link: http://lkml.kernel.org/n/tip-ujjq7auvaw49slr57sarh0cu@git.kernel.org
Signed-off-by: Jiri Olsa <jolsa@...nel.org>
---
 tools/perf/Documentation/perf-script.txt | 2 +-
 tools/perf/builtin-script.c              | 9 +++++++++
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/tools/perf/Documentation/perf-script.txt b/tools/perf/Documentation/perf-script.txt
index 7730c1d2b5d3..0d1db8c7d2d1 100644
--- a/tools/perf/Documentation/perf-script.txt
+++ b/tools/perf/Documentation/perf-script.txt
@@ -117,7 +117,7 @@ OPTIONS
         Comma separated list of fields to print. Options are:
         comm, tid, pid, time, cpu, event, trace, ip, sym, dso, addr, symoff,
         srcline, period, iregs, uregs, brstack, brstacksym, flags, bpf-output, brstackinsn,
-        brstackoff, callindent, insn, insnlen, synth, phys_addr, metric, misc.
+        brstackoff, callindent, insn, insnlen, synth, phys_addr, metric, misc, user_data_id.
         Field list can be prepended with the type, trace, sw or hw,
         to indicate to which event type the field list applies.
         e.g., -F sw:comm,tid,time,ip,sym  and -F trace:time,cpu,trace
diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c
index 2b8231292fe2..7baa2e5d7f9e 100644
--- a/tools/perf/builtin-script.c
+++ b/tools/perf/builtin-script.c
@@ -95,6 +95,7 @@ enum perf_output_field {
 	PERF_OUTPUT_UREGS	    = 1U << 27,
 	PERF_OUTPUT_METRIC	    = 1U << 28,
 	PERF_OUTPUT_MISC            = 1U << 29,
+	PERF_OUTPUT_USER_DATA_ID    = 1U << 30,
 };
 
 struct output_option {
@@ -131,6 +132,7 @@ struct output_option {
 	{.str = "phys_addr", .field = PERF_OUTPUT_PHYS_ADDR},
 	{.str = "metric", .field = PERF_OUTPUT_METRIC},
 	{.str = "misc", .field = PERF_OUTPUT_MISC},
+	{.str = "user_data_id", .field = PERF_OUTPUT_USER_DATA_ID},
 };
 
 enum {
@@ -1670,6 +1672,13 @@ static void process_event(struct perf_script *script,
 	if (PRINT_FIELD(WEIGHT))
 		fprintf(fp, "%16" PRIu64, sample->weight);
 
+	if (PRINT_FIELD(USER_DATA_ID)) {
+		if (sample->misc & PERF_RECORD_MISC_USER_DATA)
+			fprintf(fp, "%16" PRIu64, sample->user_data_id);
+		else
+			fprintf(fp, "%16s", "N/A");
+	}
+
 	if (PRINT_FIELD(IP)) {
 		struct callchain_cursor *cursor = NULL;
 
-- 
2.13.6