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| author |   Peter Zijlstra <peterz@infradead.org> | 2016-12-23 10:36:00 +0100 |
|---|---|---|
| committer |   Ingo Molnar <mingo@kernel.org> | 2017-01-14 11:14:48 +0100 |
| commit | 427b18207a87f6306bd53a74e03dbe17392b0045 (patch) | |
| tree | f2e01fa5f318d2bbdebf98fe7c0f472da835160c /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | locking/ww_mutex: Optimize ww-mutexes by waking at most one waiter for backoff when acquiring the lock (diff) | |
| download | linux-dev-427b18207a87f6306bd53a74e03dbe17392b0045.tar.xz linux-dev-427b18207a87f6306bd53a74e03dbe17392b0045.zip | |
locking/mutex: Improve inlining
Instead of inlining __mutex_lock_common() 5 times, once for each
{state,ww} variant. Reduce this to two, ww and !ww.
Then add __always_inline to mutex_optimistic_spin(), so that that will
get inlined all 4 remaining times, for all {waiter,ww} variants.
text data bss dec hex filename
6301 0 0 6301 189d defconfig-build/kernel/locking/mutex.o
4053 0 0 4053 fd5 defconfig-build/kernel/locking/mutex.o
4257 0 0 4257 10a1 defconfig-build/kernel/locking/mutex.o
This reduces total text size and better separates the ww and !ww mutex
code generation.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions