linux-kernel - [PATCH v3 5/5] perf/script: add support for skid ip

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Date:   Tue,  7 Nov 2017 23:56:37 -0800
From:   Stephane Eranian <eranian@...gle.com>
To:     linux-kernel@...r.kernel.org
Cc:     acme@...hat.com, peterz@...radead.org, mingo@...e.hu,
        ak@...ux.intel.com, kan.liang@...el.com, jolsa@...hat.com
Subject: [PATCH v3 5/5] perf/script: add support for skid ip

This patch adds a skid_ip field to perf script
to dump the raw value of the PERF_SAMPLE_SKID_IP
field in each sample.

$ perf script -F +ip,+skid_ip ......

The field is not enabled by default.

Signed-off-by: Stephane Eranian <eranian@...gle.com>
---
 tools/perf/Documentation/perf-script.txt |  2 +-
 tools/perf/builtin-script.c              | 10 ++++++++--
 tools/perf/util/session.c                |  2 +-
 3 files changed, 10 insertions(+), 4 deletions(-)

diff --git a/tools/perf/Documentation/perf-script.txt b/tools/perf/Documentation/perf-script.txt
index 2811fcf684cb..96871bd3a576 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.
+        brstackoff, callindent, insn, insnlen, synth, phys_addr, skid_ip.
         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 68f36dc0344f..f00fc8c50f68 100644
--- a/tools/perf/builtin-script.c
+++ b/tools/perf/builtin-script.c
@@ -90,6 +90,7 @@ enum perf_output_field {
 	PERF_OUTPUT_SYNTH           = 1U << 25,
 	PERF_OUTPUT_PHYS_ADDR       = 1U << 26,
 	PERF_OUTPUT_UREGS	    = 1U << 27,
+	PERF_OUTPUT_SKID_IP	    = 1U << 28,
 };
 
 struct output_option {
@@ -124,6 +125,7 @@ struct output_option {
 	{.str = "brstackoff", .field = PERF_OUTPUT_BRSTACKOFF},
 	{.str = "synth", .field = PERF_OUTPUT_SYNTH},
 	{.str = "phys_addr", .field = PERF_OUTPUT_PHYS_ADDR},
+	{.str = "skid_ip", .field = PERF_OUTPUT_SKID_IP},
 };
 
 enum {
@@ -1563,7 +1565,11 @@ static void process_event(struct perf_script *script,
 
 	if (PRINT_FIELD(PHYS_ADDR))
 		fprintf(fp, "%16" PRIx64, sample->phys_addr);
-	fprintf(fp, "\n");
+
+	if (PRINT_FIELD(SKID_IP))
+		printf(" %"PRIx64" ", sample->skid_ip);
+
+	printf("\n");
 }
 
 static struct scripting_ops	*scripting_ops;
@@ -2915,7 +2921,7 @@ int cmd_script(int argc, const char **argv)
 		     "Valid types: hw,sw,trace,raw,synth. "
 		     "Fields: comm,tid,pid,time,cpu,event,trace,ip,sym,dso,"
 		     "addr,symoff,period,iregs,uregs,brstack,brstacksym,flags,"
-		     "bpf-output,callindent,insn,insnlen,brstackinsn,synth,phys_addr",
+		     "bpf-output,callindent,insn,insnlen,brstackinsn,synth,phys_addr,skid_ip",
 		     parse_output_fields),
 	OPT_BOOLEAN('a', "all-cpus", &system_wide,
 		    "system-wide collection from all CPUs"),
diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index 223165055d41..ee8fb635f694 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -1133,7 +1133,7 @@ static void dump_sample(struct perf_evsel *evsel, union perf_event *event,
 		sample_read__printf(sample, evsel->attr.read_format);
 
 	if (sample_type & PERF_SAMPLE_SKID_IP)
-		printf("... skid_ip: %" PRIu64 "\n", sample->skid_ip);
+		printf("... skid_ip: 0x%" PRIx64 "\n", sample->skid_ip);
 }
 
 static void dump_read(struct perf_evsel *evsel, union perf_event *event)
-- 
2.7.4