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| author | Andy Lutomirski <luto@kernel.org> | 2015-08-17 22:22:50 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2015-08-18 10:39:26 +0300 |
| commit | 512255a2ad2c832ca7d4de9f31245f73781922d0 (patch) | |
| tree | 494fcca893dc7a02c04353f11a21a0672f527fb6 /arch/x86/math-emu | |
| parent | 2c6625cd545bdd66acff14f3394865d43920a5c7 (diff) | |
| download | linux-512255a2ad2c832ca7d4de9f31245f73781922d0.tar.xz | |
Revert "sched/x86_64: Don't save flags on context switch"
This reverts commit:
2c7577a75837 ("sched/x86_64: Don't save flags on context switch")
It was a nice speedup. It's also not quite correct: SYSENTER
enables interrupts too early.
We can re-add this optimization once the SYSENTER code is beaten
into shape, which should happen in 4.3 or 4.4.
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@vger.kernel.org # v3.19
Link: http://lkml.kernel.org/r/85f56651f59f76624e80785a8fd3bdfdd089a818.1439838962.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/math-emu')
0 files changed, 0 insertions, 0 deletions