diff options
| author | Will Deacon <will.deacon@arm.com> | 2013-10-09 20:19:22 +0400 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2013-10-29 15:06:11 +0400 |
| commit | 0cbad9c9dfe0c38e8ec7385b39087c005a6dee3e (patch) | |
| tree | c835625cbf2eb478134713fe1df99ca5e4e9bbf3 /arch/arm/mach-shmobile/entry-intc.S | |
| parent | 775ebcc16b940ebf61bf54d6054a5e639f68b9d6 (diff) | |
| download | linux-0cbad9c9dfe0c38e8ec7385b39087c005a6dee3e.tar.xz | |
ARM: 7854/1: lockref: add support for lockless lockrefs using cmpxchg64
Our spinlocks are only 32-bit (2x16-bit tickets) and, on processors
with 64-bit atomic instructions, cmpxchg64 makes use of the double-word
exclusive accessors.
This patch wires up the cmpxchg-based lockless lockref implementation
for ARM.
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mach-shmobile/entry-intc.S')
0 files changed, 0 insertions, 0 deletions