Current event/toplevel-enable.tc checking the trace
buffer by dumping all events while recording events.
However, this makes system very busy.
To reduce this overhead comes from reading trace buffer
and recording trace buffer, use head instead of cat
and stop tracing while reading.
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
The usleep is only provided on distros from Redhat so running ftracetest
on other distro resulted in failures due to the missing usleep.
The reason of using [u]sleep in the test was to generate (scheduler)
events. It can be done various ways like this:
yield() { ping localhost -c 1 || sleep .001 || usleep 1 || sleep 1; }
For more information to the history of this patch, please refer to:
Link: http://lkml.kernel.org/r/1427329943-16896-1-git-send-email-namhyung@kernel.org
Reported-by: Michael Ellerman <mpe@ellerman.id.au>
Reported-by: Dave Jones <davej@codemonkey.org.uk>
Reported-by: Luis Henriques <luis.henriques@canonical.com>
Suggested-by: Pádraig Brady <P@draigBrady.com>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
POSIX says that exit takes an unsigned integer between 0 and 255, so
using -1 doesn't work on POSIX shells.
There is already a well-defined failure code, $FAIL (1), so use that.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
Masami Hiramatsu