[tip:perfcounters/core] perf tools: callchain: Fix 'perf report' display to be callchain by default

tip-bot for Frederic Weisbecker
2009-08-08T11:53:31Z

Commit-ID: 0b51a97cec68a953629cc388d762c61b2c05886e
Gitweb: http://git.kernel.org/tip/0b51a97cec68a953629cc388d762c61b2c05886e
Author: Frederic Weisbecker <fweisbec@gmail.com>
AuthorDate: Sat, 8 Aug 2009 02:16:24 +0200
Committer: Ingo Molnar <mingo@elte.hu>
CommitDate: Sat, 8 Aug 2009 13:49:21 +0200

perf tools: callchain: Fix 'perf report' display to be callchain by default

If we recorded with -g option to record the callchain, right now
we require a -g option to perf report as well - and people reported
this as unnecessary complication: the user already specified -g
once, no need to require it a second time.

So if the recording includes call-chains, display the callchain by
default from perf report.

( The user can override this default using "-g none" option from
perf report. )

Reported-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
LKML-Reference: <1249690585-9145-3-git-send-email-fweisbec@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

---
tools/perf/builtin-report.c | 16 +++++++++++++++-
tools/perf/util/callchain.h | 1 +
2 files changed, 16 insertions(+), 1 deletions(-)

diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index a5e2f8d..c4a8e10 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -68,7 +68,7 @@ static int callchain;

static
struct callchain_param callchain_param = {
- .mode = CHAIN_GRAPH_ABS,
+ .mode = CHAIN_GRAPH_REL,
.min_percent = 0.5
};

@@ -1836,6 +1836,13 @@ static int __cmd_report(void)
" -g?\n");
exit(-1);
}
+ } else if (callchain_param.mode != CHAIN_NONE && !callchain) {
+ callchain = 1;
+ if (register_callchain_param(&callchain_param) < 0) {
+ fprintf(stderr, "Can't register callchain"
+ " params\n");
+ exit(-1);
+ }
}

if (load_kernel() < 0) {
@@ -1974,6 +1981,13 @@ parse_callchain_opt(const struct option *opt __used, const char *arg,
else if (!strncmp(tok, "fractal", strlen(arg)))
callchain_param.mode = CHAIN_GRAPH_REL;

+ else if (!strncmp(tok, "none", strlen(arg))) {
+ callchain_param.mode = CHAIN_NONE;
+ callchain = 0;
+
+ return 0;
+ }
+
else
return -1;

diff --git a/tools/perf/util/callchain.h b/tools/perf/util/callchain.h
index b2d128e..a926ae4 100644
--- a/tools/perf/util/callchain.h
+++ b/tools/perf/util/callchain.h
@@ -7,6 +7,7 @@
#include "symbol.h"

enum chain_mode {
+ CHAIN_NONE,
CHAIN_FLAT,
CHAIN_GRAPH_ABS,
CHAIN_GRAPH_REL