[tip:perf/core] perf c2c report: Add --no-source option

From: tip-bot for Jiri Olsa
Date: Sat Oct 22 2016 - 04:58:28 EST


Commit-ID: 18f278d2dd68fdccf8810e78d10d6b75a6f2f67a
Gitweb: http://git.kernel.org/tip/18f278d2dd68fdccf8810e78d10d6b75a6f2f67a
Author: Jiri Olsa <jolsa@xxxxxxxxxx>
AuthorDate: Tue, 11 Oct 2016 13:39:47 +0200
Committer: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Fri, 21 Oct 2016 10:32:01 -0300

perf c2c report: Add --no-source option

Add a possibility to disable source line column with new --no-source
option. It source line data could take lot of time to retrieve, so it
could be a performance burden for big data.

Signed-off-by: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Andi Kleen <andi@xxxxxxxxxxxxxx>
Cc: David Ahern <dsahern@xxxxxxxxx>
Cc: Don Zickus <dzickus@xxxxxxxxxx>
Cc: Joe Mario <jmario@xxxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Link: http://lkml.kernel.org/n/tip-8p6s2727fq8nbsm3it5gix3p@xxxxxxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
tools/perf/Documentation/perf-c2c.txt | 3 +++
tools/perf/builtin-c2c.c | 13 ++++++++-----
2 files changed, 11 insertions(+), 5 deletions(-)

diff --git a/tools/perf/Documentation/perf-c2c.txt b/tools/perf/Documentation/perf-c2c.txt
index ba2f4de..33ed456 100644
--- a/tools/perf/Documentation/perf-c2c.txt
+++ b/tools/perf/Documentation/perf-c2c.txt
@@ -94,6 +94,9 @@ REPORT OPTIONS
--full-symbols::
Display full length of symbols.

+--no-source::
+ Do not display Source:Line column.
+
C2C RECORD
----------
The perf c2c record command setup options related to HITM cacheline analysis
diff --git a/tools/perf/builtin-c2c.c b/tools/perf/builtin-c2c.c
index 32c9e62..7eb418d 100644
--- a/tools/perf/builtin-c2c.c
+++ b/tools/perf/builtin-c2c.c
@@ -2404,7 +2404,7 @@ static int setup_display(const char *str)
for (__tok = strtok_r(__buf, __sep, &__tmp); __tok; \
__tok = strtok_r(NULL, __sep, &__tmp))

-static int build_cl_output(char *cl_sort)
+static int build_cl_output(char *cl_sort, bool no_source)
{
char *tok, *tmp, *buf = strdup(cl_sort);
bool add_pid = false;
@@ -2426,7 +2426,7 @@ static int build_cl_output(char *cl_sort)
add_iaddr = true;
add_sym = true;
add_dso = true;
- add_src = true;
+ add_src = no_source ? false : true;
} else if (!strcmp(tok, "dso")) {
add_dso = true;
} else if (strcmp(tok, "offset")) {
@@ -2462,14 +2462,14 @@ static int build_cl_output(char *cl_sort)
return 0;
}

-static int setup_coalesce(const char *coalesce)
+static int setup_coalesce(const char *coalesce, bool no_source)
{
const char *c = coalesce ?: coalesce_default;

if (asprintf(&c2c.cl_sort, "offset,%s", c) < 0)
return -ENOMEM;

- if (build_cl_output(c2c.cl_sort))
+ if (build_cl_output(c2c.cl_sort, no_source))
return -1;

if (asprintf(&c2c.cl_resort, "offset,%s",
@@ -2494,6 +2494,7 @@ static int perf_c2c__report(int argc, const char **argv)
char callchain_default_opt[] = CALLCHAIN_DEFAULT_OPT;
const char *display = NULL;
const char *coalesce = NULL;
+ bool no_source = false;
const struct option c2c_options[] = {
OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
"file", "vmlinux pathname"),
@@ -2510,6 +2511,8 @@ static int perf_c2c__report(int argc, const char **argv)
"Use the stdio interface"),
OPT_BOOLEAN(0, "full-symbols", &c2c.symbol_full,
"Display full length of symbols"),
+ OPT_BOOLEAN(0, "no-source", &no_source,
+ "Do not display Source Line column"),
OPT_CALLBACK_DEFAULT('g', "call-graph", &callchain_param,
"print_type,threshold[,print_limit],order,sort_key[,branch],value",
callchain_help, &parse_callchain_opt,
@@ -2545,7 +2548,7 @@ static int perf_c2c__report(int argc, const char **argv)
if (err)
goto out;

- err = setup_coalesce(coalesce);
+ err = setup_coalesce(coalesce, no_source);
if (err) {
pr_debug("Failed to initialize hists\n");
goto out;