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Subject[tip:perf/core] perf jit: Move clockid validation
Commit-ID:  4a018cc47932ef1e68a0600ce3ac100df70fab2a
Gitweb: http://git.kernel.org/tip/4a018cc47932ef1e68a0600ce3ac100df70fab2a
Author: Adrian Hunter <adrian.hunter@intel.com>
AuthorDate: Mon, 7 Mar 2016 16:44:41 -0300
Committer: Ingo Molnar <mingo@kernel.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@intel.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1457005856-6143-6-git-send-email-adrian.hunter@intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.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) {
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