linux-kernel - [tip:perf/core] perf jit: Move clockid validation

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Date:	Tue, 8 Mar 2016 02:31:13 -0800
From:	tip-bot for Adrian Hunter <tipbot@...or.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	adrian.hunter@...el.com, acme@...hat.com,
	alexander.shishkin@...ux.intel.com, eranian@...gle.com,
	namhyung@...nel.org, mingo@...nel.org, hpa@...or.com,
	linux-kernel@...r.kernel.org, jolsa@...hat.com, dsahern@...il.com,
	peterz@...radead.org, tglx@...utronix.de
Subject: [tip:perf/core] perf jit: Move clockid validation

Commit-ID:  4a018cc47932ef1e68a0600ce3ac100df70fab2a
Gitweb:     http://git.kernel.org/tip/4a018cc47932ef1e68a0600ce3ac100df70fab2a
Author:     Adrian Hunter <adrian.hunter@...el.com>
AuthorDate: Mon, 7 Mar 2016 16:44:41 -0300
Committer:  Ingo Molnar <mingo@...nel.org>
CommitDate: Tue, 8 Mar 2016 10:11:17 +0100

perf jit: Move clockid validation

Move clockid validation into jit_process() so it can later be made
conditional.

Signed-off-by: Adrian Hunter <adrian.hunter@...el.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
Cc: Alexander Shishkin <alexander.shishkin@...ux.intel.com>
Cc: David Ahern <dsahern@...il.com>
Cc: Jiri Olsa <jolsa@...hat.com>
Cc: Namhyung Kim <namhyung@...nel.org>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Stephane Eranian <eranian@...gle.com>
Cc: Thomas Gleixner <tglx@...utronix.de>
Link: http://lkml.kernel.org/r/1457005856-6143-6-git-send-email-adrian.hunter@intel.com
Signed-off-by: Ingo Molnar <mingo@...nel.org>
---
 tools/perf/builtin-inject.c | 24 ------------------------
 tools/perf/util/jitdump.c   | 23 +++++++++++++++++++++++
 2 files changed, 23 insertions(+), 24 deletions(-)

diff --git a/tools/perf/builtin-inject.c b/tools/perf/builtin-inject.c
index 2512d71..b288577 100644
--- a/tools/perf/builtin-inject.c
+++ b/tools/perf/builtin-inject.c
@@ -729,23 +729,6 @@ static int __cmd_inject(struct perf_inject *inject)
 	return ret;
 }
 
-#ifdef HAVE_LIBELF_SUPPORT
-static int
-jit_validate_events(struct perf_session *session)
-{
-	struct perf_evsel *evsel;
-
-	/*
-	 * check that all events use CLOCK_MONOTONIC
-	 */
-	evlist__for_each(session->evlist, evsel) {
-		if (evsel->attr.use_clockid == 0 || evsel->attr.clockid != CLOCK_MONOTONIC)
-			return -1;
-	}
-	return 0;
-}
-#endif
-
 int cmd_inject(int argc, const char **argv, const char *prefix __maybe_unused)
 {
 	struct perf_inject inject = {
@@ -852,13 +835,6 @@ int cmd_inject(int argc, const char **argv, const char *prefix __maybe_unused)
 	}
 #ifdef HAVE_LIBELF_SUPPORT
 	if (inject.jit_mode) {
-		/*
-		 * validate event is using the correct clockid
-		 */
-		if (jit_validate_events(inject.session)) {
-			fprintf(stderr, "error, jitted code must be sampled with perf record -k 1\n");
-			return -1;
-		}
 		inject.tool.mmap2	   = perf_event__jit_repipe_mmap2;
 		inject.tool.mmap	   = perf_event__jit_repipe_mmap;
 		inject.tool.ordered_events = true;
diff --git a/tools/perf/util/jitdump.c b/tools/perf/util/jitdump.c
index bd9e44f..cd272cc 100644
--- a/tools/perf/util/jitdump.c
+++ b/tools/perf/util/jitdump.c
@@ -99,6 +99,21 @@ jit_close(struct jit_buf_desc *jd)
 }
 
 static int
+jit_validate_events(struct perf_session *session)
+{
+	struct perf_evsel *evsel;
+
+	/*
+	 * check that all events use CLOCK_MONOTONIC
+	 */
+	evlist__for_each(session->evlist, evsel) {
+		if (evsel->attr.use_clockid == 0 || evsel->attr.clockid != CLOCK_MONOTONIC)
+			return -1;
+	}
+	return 0;
+}
+
+static int
 jit_open(struct jit_buf_desc *jd, const char *name)
 {
 	struct jitheader header;
@@ -157,6 +172,14 @@ jit_open(struct jit_buf_desc *jd, const char *name)
 		goto error;
 	}
 
+	/*
+	 * validate event is using the correct clockid
+	 */
+	if (jit_validate_events(jd->session)) {
+		pr_err("error, jitted code must be sampled with perf record -k 1\n");
+		goto error;
+	}
+
 	bs = header.total_size - sizeof(header);
 
 	if (bs > bsz) {