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authorOleg Nesterov <oleg@redhat.com>2013-10-19 16:18:28 (GMT)
committerIngo Molnar <mingo@kernel.org>2013-10-31 10:16:18 (GMT)
commit6a716c90a51338009c3bc1f460829afaed8f922d (patch)
tree85e821a30e0f9350a2b67ff94d758632eec92689 /mm/zswap.c
parent4c4e4f61368164f326fe59e2156c70d7faa72c17 (diff)
downloadlinux-6a716c90a51338009c3bc1f460829afaed8f922d.tar.xz
hung_task debugging: Add tracepoint to report the hang
Currently check_hung_task() prints a warning if it detects the problem, but it is not convenient to watch the system logs if user-space wants to be notified about the hang. Add the new trace_sched_process_hang() into check_hung_task(), this way a user-space monitor can easily wait for the hang and potentially resolve a problem. Signed-off-by: Oleg Nesterov <oleg@redhat.com> Cc: Dave Sullivan <dsulliva@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt <rostedt@goodmis.org> Link: http://lkml.kernel.org/r/20131019161828.GA7439@redhat.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'mm/zswap.c')
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