[PATCH v2] arch: use WRITE_ONCE/READ_ONCE in smp_store_release/smp_load_acquire

Peter Zijlstra peterz at infradead.org
Mon Aug 3 02:08:09 AEST 2015

On Sun, Aug 02, 2015 at 05:11:04PM +0200, Andrey Konovalov wrote:
> Replace ACCESS_ONCE() macro in smp_store_release() and smp_load_acquire()
> with WRITE_ONCE() and READ_ONCE() on x86, arm, arm64, ia64, metag, mips,
> powerpc, s390, sparc and asm-generic since ACCESS_ONCE does not work
> reliably on non-scalar types.
> WRITE_ONCE() and READ_ONCE() were introduced in the commits 230fa253df63
> ("kernel: Provide READ_ONCE and ASSIGN_ONCE") and 43239cbe79fc ("kernel:
> Change ASSIGN_ONCE(val, x) to WRITE_ONCE(x, val)").
> Signed-off-by: Andrey Konovalov <andreyknvl at google.com>


More information about the Linuxppc-dev mailing list