linux-kernel - [PATCH 2/2] perf tools: Add record.use-buildid-cache config option

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Date:	Fri,  7 Nov 2014 22:57:57 +0900
From:	Namhyung Kim <namhyung@...nel.org>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>,
	Hemant Kumar <hemant@...ux.vnet.ibm.com>,
	Arnaldo Carvalho de Melo <acme@...nel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Ingo Molnar <mingo@...nel.org>, srikar@...ux.vnet.ibm.com,
	oleg@...hat.com, hegdevasant@...ux.vnet.ibm.com,
	systemtap@...rceware.org, aravinda@...ux.vnet.ibm.com,
	penberg@....fi, brendan.d.gregg@...il.com,
	Steven Rostedt <rostedt@...dmis.org>
Subject: [PATCH 2/2] perf tools: Add record.use-buildid-cache config option

Add a new config option for auto-disable buildid-cache.

  $ cat ~/.perfconfig
  [record]
  use-buildid-cache = false

  $ rm -rf ~/.debug
  $ perf record -av sleep 1
  mmap size 528384B
  [ perf record: Woken up 1 times to write data ]
  [ perf record: Captured and wrote 0.439 MB perf.data (~19182 samples) ]
  Looking at the vmlinux_path (7 entries long)
  Using /proc/kallsyms for symbols

  $ tree ~/.debug
  /home/namhyung/.debug [error opening dir]

  0 directories, 0 files

Requested-by: Peter Zijlstra <peterz@...radead.org>
Cc: Steven Rostedt <rostedt@...dmis.org>
Signed-off-by: Namhyung Kim <namhyung@...nel.org>
---
 tools/perf/builtin-record.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index 582c4da155ea..19083e715698 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -685,6 +685,12 @@ int record_callchain_opt(const struct option *opt __maybe_unused,
 
 static int perf_record_config(const char *var, const char *value, void *cb)
 {
+	struct record *rec = cb;
+
+	if (!strcmp(var, "record.use-buildid-cache")) {
+		rec->no_buildid_cache = !perf_config_bool(var, value);
+		return 0;
+	}
 	if (!strcmp(var, "record.call-graph"))
 		var = "call-graph.record-mode"; /* fall-through */
 
-- 
2.0.0

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