A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-29 03:01:39 -04:00
Code Issues Projects Releases Packages Wiki Activity

perf record: Fix the -A UI for empty or non-existent perf.data

Browse source 
1. Ignore the -A argument if there is no perf.data file
2. Treat an empty file like a non existent file.

Else, perf will try to read the perf.data header, and fail with
an error.

Treating an empty file like a non-existent file makes sense,
since an interupted (as in SIGKILLed) perf could leave such
files around, and you don't want to annoy the user with errors
for files with no data in it.

Signed-off-by: Pierre Habouzit <[email protected]>
Acked-by: Peter Zijlstra <[email protected]>
Cc: Paul Mackerras <[email protected]>
Signed-off-by: Ingo Molnar <[email protected]>
This commit is contained in:
Pierre Habouzit 2009-08-07 14:16:01 +02:00 • committed by Ingo Molnar
commit 266e0e2198
1 changed files with 8 additions and 4 deletions
Download patch file Download diff file Expand all files Collapse all files

12
tools/perf/builtin-record.c
View file

@ -525,10 +525,14 @@ static int __cmd_record(int argc, const char **argv)
signal(SIGCHLD, sig_handler);
signal(SIGINT, sig_handler);
if (!stat(output_name, &st) && !force && !append_file) {
fprintf(stderr, "Error, output file %s exists, use -A to append or -f to overwrite.\n",
output_name);
exit(-1);
if (!stat(output_name, &st) && st.st_size) {
if (!force && !append_file) {
fprintf(stderr, "Error, output file %s exists, use -A to append or -f to overwrite.\n",
output_name);
exit(-1);
}
} else {
append_file = 0;
}
flags = O_CREAT|O_RDWR;