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| author | Pavankumar Kondeti <pkondeti@codeaurora.org> | 2018-10-30 12:24:33 +0530 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-12-08 12:59:06 +0100 |
| commit | fd8152818f11435557a18311603220d8bbdf7272 (patch) | |
| tree | 18e4dc80615db48b6e3b05865c070abfd6511819 /kernel | |
| parent | 2858d1891eb52cfd4f9b1ec2f4d44b1afcd3f529 (diff) | |
sched, trace: Fix prev_state output in sched_switch tracepoint
commit 3054426dc68e5d63aa6a6e9b91ac4ec78e3f3805 upstream.
commit 3f5fe9fef5b2 ("sched/debug: Fix task state recording/printout")
tried to fix the problem introduced by a previous commit efb40f588b43
("sched/tracing: Fix trace_sched_switch task-state printing"). However
the prev_state output in sched_switch is still broken.
task_state_index() uses fls() which considers the LSB as 1. Left
shifting 1 by this value gives an incorrect mapping to the task state.
Fix this by decrementing the value returned by __get_task_state()
before shifting.
Link: http://lkml.kernel.org/r/1540882473-1103-1-git-send-email-pkondeti@codeaurora.org
Cc: stable@vger.kernel.org
Fixes: 3f5fe9fef5b2 ("sched/debug: Fix task state recording/printout")
Signed-off-by: Pavankumar Kondeti <pkondeti@codeaurora.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'kernel')
0 files changed, 0 insertions, 0 deletions