Re: [PATCH v2] arch: use WRITE_ONCE/READ_ONCE in smp_store_release/smp_load_acquire
From: Peter Zijlstra <peterz@infradead.org>
Date: 2015-08-02 16:09:01
Also in:
linux-arch, linux-arm-kernel, linux-s390, linuxppc-dev, lkml, sparclinux
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 <redacted>Thanks!