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| author | Ingo Molnar | 2009-10-06 15:02:30 +0200 |
|---|---|---|
| committer | Ingo Molnar | 2009-10-06 15:02:34 +0200 |
| commit | d9b2002c406011164f245de7a81304625989f1c9 (patch) | |
| tree | a2bb74773cd1409acbec5eb2fbba2ae9889d55e8 /kernel/trace/trace_events.c | |
| parent | perf report: Use kernel_maps__find_symbol as fallback to find vdsos, etc (diff) | |
| parent | perf_event: Provide vmalloc() based mmap() backing (diff) | |
| download | kernel-qcow2-linux-d9b2002c406011164f245de7a81304625989f1c9.tar.gz kernel-qcow2-linux-d9b2002c406011164f245de7a81304625989f1c9.tar.xz kernel-qcow2-linux-d9b2002c406011164f245de7a81304625989f1c9.zip | |
Merge branch 'perf/urgent' into perf/core
Merge reason: Upcoming patch is dependent on a fix in perf/urgent.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/trace/trace_events.c')
| -rw-r--r-- | kernel/trace/trace_events.c | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c index 6f03c8a1105e..d128f65778e6 100644 --- a/kernel/trace/trace_events.c +++ b/kernel/trace/trace_events.c @@ -232,10 +232,9 @@ ftrace_event_write(struct file *file, const char __user *ubuf, size_t cnt, loff_t *ppos) { struct trace_parser parser; - size_t read = 0; - ssize_t ret; + ssize_t read, ret; - if (!cnt || cnt < 0) + if (!cnt) return 0; ret = tracing_update_buffers(); @@ -247,7 +246,7 @@ ftrace_event_write(struct file *file, const char __user *ubuf, read = trace_get_user(&parser, ubuf, cnt, ppos); - if (trace_parser_loaded((&parser))) { + if (read >= 0 && trace_parser_loaded((&parser))) { int set = 1; if (*parser.buffer == '!') |