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perf tools: Use O_LARGEFILE to open perf data file

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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>
This commit is contained in:
Xiao Guangrong
2010-02-03 11:53:14 +08:00
committed by Ingo Molnar
parent 59f411b62c
commit b8f46c5a34
4 changed files with 23 additions and 13 deletions
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4
tools/perf/util/trace-event-read.c
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@@ -83,7 +83,7 @@ static char *read_string(void)
char *str = NULL;
int size = 0;
int i;
int r;
s64 r;
for (;;) {
r = read(input_fd, buf, BUFSIZ);
@@ -117,7 +117,7 @@ static char *read_string(void)
i++;
/* move the file descriptor to the end of the string */
r = lseek(input_fd, -(r - i), SEEK_CUR);
r = lseek64(input_fd, -(r - i), SEEK_CUR);
if (r < 0)
die("lseek");