https://github.com/torvalds/linux
Revision 3054426dc68e5d63aa6a6e9b91ac4ec78e3f3805 authored by Pavankumar Kondeti on 30 October 2018, 06:54:33 UTC, committed by Steven Rostedt (VMware) on 28 November 2018, 01:31:55 UTC
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>
1 parent b1b35f2
History
Tip revision: 3054426dc68e5d63aa6a6e9b91ac4ec78e3f3805 authored by Pavankumar Kondeti on 30 October 2018, 06:54:33 UTC
sched, trace: Fix prev_state output in sched_switch tracepoint
Tip revision: 3054426
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