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authorXiao Guangrong <xiaoguangrong@cn.fujitsu.com>2010-02-03 11:53:14 +0800
committerIngo Molnar <mingo@elte.hu>2010-02-03 09:03:59 +0100
commitb8f46c5a34fa64fd456295388d18f50ae69d9f37 (patch)
treecba5da0bb3e4ca5c450df8aaa53fc74945c6fd28 /tools/perf/builtin-record.c
parent59f411b62c9282891274e721fea29026b0eda3cc (diff)
downloadlinux-2.6.34-ux500-b8f46c5a34fa64fd456295388d18f50ae69d9f37.tar.gz
perf tools: Use O_LARGEFILE to open perf data file
Open perf data file with O_LARGEFILE flag since its size is easily larger that 2G. For example: # rm -rf perf.data # ./perf kmem record sleep 300 [ perf record: Woken up 0 times to write data ] [ perf record: Captured and wrote 3142.147 MB perf.data (~137282513 samples) ] # ll -h perf.data -rw------- 1 root root 3.1G ..... Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> LKML-Reference: <4B68F32A.9040203@cn.fujitsu.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'tools/perf/builtin-record.c')
-rw-r--r--tools/perf/builtin-record.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index eea56910b91..949167efa1e 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -5,6 +5,9 @@
* (or a CPU, or a PID) into the perf.data output file - for
* later analysis via perf report.
*/
+#define _LARGEFILE64_SOURCE
+#define _FILE_OFFSET_BITS 64
+
#include "builtin.h"
#include "perf.h"
@@ -451,7 +454,7 @@ static int __cmd_record(int argc, const char **argv)
append_file = 0;
}
- flags = O_CREAT|O_RDWR;
+ flags = O_CREAT|O_RDWR|O_LARGEFILE;
if (append_file)
file_new = 0;
else