https://github.com/torvalds/linux
Revision 512255a2ad2c832ca7d4de9f31245f73781922d0 authored by Andy Lutomirski on 17 August 2015, 19:22:50 UTC, committed by Ingo Molnar on 18 August 2015, 07:39:26 UTC
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>
1 parent 2c6625c
History
Tip revision: 512255a2ad2c832ca7d4de9f31245f73781922d0 authored by Andy Lutomirski on 17 August 2015, 19:22:50 UTC
Revert "sched/x86_64: Don't save flags on context switch"
Tip revision: 512255a
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