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The mmiowb() macro is horribly difficult to use and drivers will continue to work most of the time if they omit a call when it is required. Rather than rely on driver authors getting this right, push mmiowb() into arch_spin_unlock() for ia64. If this is deemed to be a performance issue, a subsequent optimisation could make use of ARCH_HAS_MMIOWB to elide the barrier in cases where no I/O writes were performed inside the critical section. Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Will Deacon <will.deacon@arm.com> |
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configs | ||
dig | ||
hp | ||
include | ||
kernel | ||
lib | ||
mm | ||
oprofile | ||
pci | ||
scripts | ||
sn | ||
uv | ||
install.sh | ||
Kconfig | ||
Kconfig.debug | ||
Makefile | ||
module.lds |