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Blackfin arch: make sure cycles is marked as volatile so gcc doesnt reorder on us

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Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
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Mike Frysinger 2008-10-16 23:55:41 +08:00 committed by Bryan Wu
parent ed061b7ac8
commit 1390da4ee7
1 changed files with 1 additions and 1 deletions
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2
arch/blackfin/include/asm/timex.h
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@ -16,7 +16,7 @@ typedef unsigned long long cycles_t;
static inline cycles_t get_cycles(void)
{
unsigned long tmp, tmp2;
__asm__("%0 = cycles; %1 = cycles2;" : "=d"(tmp), "=d"(tmp2));
__asm__ __volatile__("%0 = cycles; %1 = cycles2;" : "=d"(tmp), "=d"(tmp2));
return tmp | ((cycles_t)tmp2 << 32);
}