Commit-ID: 03cd1fed2b8730271d3a8dbabd87989abddc33c4
Gitweb: http://git.kernel.org/tip/03cd1fed2b8730271d3a8dbabd87989abddc33c4
Author: Adrian Hunter <adrian.hunter@xxxxxxxxx>
AuthorDate: Fri, 25 Sep 2015 16:15:49 +0300
Committer: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Mon, 28 Sep 2015 17:08:48 -0300
perf script: Add a setting for maximum stack depth
Add a setting for maximum stack depth in preparation for allowing for
synthesized callchains.
Signed-off-by: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Link: http://lkml.kernel.org/r/1443186956-18718-19-git-send-email-adrian.hunter@xxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
tools/perf/builtin-script.c | 6 ++++--
tools/perf/util/session.c | 2 +-
2 files changed, 5 insertions(+), 3 deletions(-)
diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c
index 0928439..a65b498 100644
--- a/tools/perf/builtin-script.c
+++ b/tools/perf/builtin-script.c
@@ -33,6 +33,8 @@ static bool nanosecs;
static const char *cpu_list;
static DECLARE_BITMAP(cpu_bitmap, MAX_NR_CPUS);
+static unsigned int scripting_max_stack = PERF_MAX_STACK_DEPTH;
+
enum perf_output_field {
PERF_OUTPUT_COMM = 1U << 0,
PERF_OUTPUT_TID = 1U << 1,
@@ -475,7 +477,7 @@ static void print_sample_bts(union perf_event *event,
}
}
perf_evsel__print_ip(evsel, sample, al, print_opts,
- PERF_MAX_STACK_DEPTH);
+ scripting_max_stack);
}
/* print branch_to information */
@@ -552,7 +554,7 @@ static void process_event(union perf_event *event, struct perf_sample *sample,
perf_evsel__print_ip(evsel, sample, al,
output[attr->type].print_ip_opts,
- PERF_MAX_STACK_DEPTH);
+ scripting_max_stack);
}
if (PRINT_FIELD(IREGS))
diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index 15c84ca..84a02eae 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -1800,7 +1800,7 @@ void perf_evsel__print_ip(struct perf_evsel *evsel, struct perf_sample *sample,
if (thread__resolve_callchain(al->thread, evsel,
sample, NULL, NULL,
- PERF_MAX_STACK_DEPTH) != 0) {
+ stack_depth) != 0) {
if (verbose)
error("Failed to resolve callchain. Skipping\n");
return;
--
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