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| author | Ingo Molnar | 2011-10-17 20:53:25 +0200 |
|---|---|---|
| committer | Ingo Molnar | 2011-10-17 20:53:25 +0200 |
| commit | 53b0a61a9d31ef9b4256558c671094576e8eaf65 (patch) | |
| tree | 2046b45abe41a678a4aea433a419704991a60e47 | |
| parent | Merge branch 'perf/core' of git://github.com/acmel/linux into perf/core (diff) | |
| parent | tracing: Fix returning of duplicate data after EOF in trace_pipe_raw (diff) | |
| download | kernel-qcow2-linux-53b0a61a9d31ef9b4256558c671094576e8eaf65.tar.gz kernel-qcow2-linux-53b0a61a9d31ef9b4256558c671094576e8eaf65.tar.xz kernel-qcow2-linux-53b0a61a9d31ef9b4256558c671094576e8eaf65.zip | |
Merge branch 'tip/perf/core' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace into perf/core
| -rw-r--r-- | kernel/trace/trace.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index f86efe90ca45..b24a72d35008 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -2720,9 +2720,9 @@ static const char readme_msg[] = "# cat /sys/kernel/debug/tracing/trace_options\n" "noprint-parent nosym-offset nosym-addr noverbose\n" "# echo print-parent > /sys/kernel/debug/tracing/trace_options\n" - "# echo 1 > /sys/kernel/debug/tracing/tracing_enabled\n" + "# echo 1 > /sys/kernel/debug/tracing/tracing_on\n" "# cat /sys/kernel/debug/tracing/trace > /tmp/trace.txt\n" - "# echo 0 > /sys/kernel/debug/tracing/tracing_enabled\n" + "# echo 0 > /sys/kernel/debug/tracing/tracing_on\n" ; static ssize_t @@ -3903,8 +3903,6 @@ tracing_buffers_read(struct file *filp, char __user *ubuf, if (info->read < PAGE_SIZE) goto read; - info->read = 0; - trace_access_lock(info->cpu); ret = ring_buffer_read_page(info->tr->buffer, &info->spare, @@ -3914,6 +3912,8 @@ tracing_buffers_read(struct file *filp, char __user *ubuf, if (ret < 0) return 0; + info->read = 0; + read: size = PAGE_SIZE - info->read; if (size > count) |