Daniel Bristot de Oliveira 4bbf59a9db rtla: Fix segmentation fault when failing to enable -t ... rtla osnoise and timerlat are causing a segmentation fault when running with the --trace option on a kernel that does not support multiple instances. For example: [root@f34 rtla]# rtla osnoise top -t failed to enable the tracer osnoise Could not enable osnoiser tracer for tracing Failed to enable the trace instance Segmentation fault (core dumped) This error happens because the exit code of the tools is trying to destroy the trace instance that failed to be created. Make osnoise_destroy_tool() aware of possible NULL osnoise_tool *, and do not attempt to destroy it. This also simplifies the exit code. Link: https://lkml.kernel.org/r/5660a2b6bf66c2655842360f2d7f6b48db5dba23.1644327249.git.bristot@kernel.org Suggested-by: Steven Rostedt <rostedt@goodmis.org> Fixes: 1eceb2fc2c ("rtla/osnoise: Add osnoise top mode") Fixes: 829a6c0b56 ("rtla/osnoise: Add the hist mode") Fixes: a828cd18bc ("rtla: Add timerlat tool and timelart top mode") Fixes: 1eeb6328e8 ("rtla/timerlat: Add timerlat hist mode") Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>		2022-02-08 11:23:09 -05:00
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latency	tools/latency-collector: Use correct size when writing queue_full_warning	2021-10-25 22:27:19 -04:00
rtla	rtla: Fix segmentation fault when failing to enable -t	2022-02-08 11:23:09 -05:00
Makefile	tools/tracing: Update Makefile to build rtla	2022-01-27 19:15:47 -05:00