| commit | 2234a6d3a28a971182cc91d5679e444516421de0 | [log] [tgz] |
|---|---|---|
| author | Peter Zijlstra <peterz@infradead.org> | Wed Feb 27 11:09:56 2019 +0100 |
| committer | Ingo Molnar <mingo@kernel.org> | Mon Jun 17 12:43:44 2019 +0200 |
| tree | bea8d20799cc102fe565c3c1c5ccc69802c7bbf6 | |
| parent | 8dc2d993cf1aea578d947e34ea2d5c6ffd1644e4 [diff] |
x86/percpu: Optimize raw_cpu_xchg() Since raw_cpu_xchg() doesn't need to be IRQ-safe, like this_cpu_xchg(), we can use a simple load-store instead of the cmpxchg loop. Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@kernel.org>