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authorAndrew Morton <akpm@linux-foundation.org>2007-11-14 17:00:41 -0800
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-11-14 18:45:44 -0800
commit35d5d08a085c56f153458c3f5d8ce24123617faf (patch)
tree2db6e598e87809bc1ce7838861b2cff18e5fe60d /arch/x86/vdso/vclock_gettime.c
parent7eea436433b7b18045f272562e256976f593f7c0 (diff)
x86: disable preemption in delay_tsc()
Marin Mitov points out that delay_tsc() can misbehave if it is preempted and rescheduled on a different CPU which has a skewed TSC. Fix it by disabling preemption. (I assume that the worst-case behaviour here is a stall of 2^32 cycles) Cc: Andi Kleen <ak@suse.de> Cc: Marin Mitov <mitov@issp.bas.bg> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/x86/vdso/vclock_gettime.c')
0 files changed, 0 insertions, 0 deletions