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authorFernando Luis Vazquez Cao <fernando@oss.ntt.co.jp>2014-03-06 14:25:28 +0900
committerIngo Molnar <mingo@kernel.org>2014-03-11 11:33:48 +0100
commit96b3d28bf4b00f62fc8386ff5d487d1830793a3d (patch)
tree3e5f3fbd1ac4b194d10e3cda56a6640d3658adcb /include/asm-mips/ipcbuf.h
parent177c53d943368fc97644ebc0a250dc8e2d124250 (diff)
sched/clock: Prevent tracing recursion in sched_clock_cpu()
Prevent tracing of preempt_disable/enable() in sched_clock_cpu(). When CONFIG_DEBUG_PREEMPT is enabled, preempt_disable/enable() are traced and this causes trace_clock() users (and probably others) to go into an infinite recursion. Systems with a stable sched_clock() are not affected. This problem is similar to that fixed by upstream commit 95ef1e52922 ("KVM guest: prevent tracing recursion with kvmclock"). Signed-off-by: Fernando Luis Vazquez Cao <fernando@oss.ntt.co.jp> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Acked-by: Steven Rostedt <rostedt@goodmis.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Link: http://lkml.kernel.org/r/1394083528.4524.3.camel@nexus Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'include/asm-mips/ipcbuf.h')
0 files changed, 0 insertions, 0 deletions