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| author | Alexander Kuleshov <[email protected]> | 2016-11-28 07:50:57 +0000 |
|---|---|---|
| committer | Thomas Gleixner <[email protected]> | 2017-02-04 08:36:59 +0000 |
| commit | 07d495dae20717b00881798ef812f7aa53ca0eb3 (patch) | |
| tree | 1971fa9711049b5f90653cfc9fc940722466f50f /net/unix/af_unix.c | |
| parent | x86/pci-calgary: Fix iommu_free() comparison of unsigned expression >= 0 (diff) | |
| download | kernel-07d495dae20717b00881798ef812f7aa53ca0eb3.tar.gz kernel-07d495dae20717b00881798ef812f7aa53ca0eb3.zip | |
x86/traps: Get rid of unnecessary preempt_disable/preempt_enable_no_resched
Exception handlers which may run on IST stack call ist_enter() at the start
of execution and ist_exit() in the end. ist_enter() disables preemption
unconditionally and ist_exit() enables it.
So the extra preempt_disable/enable() pairs nested inside the
ist_enter/exit() regions are pointless and can be removed.
Signed-off-by: Alexander Kuleshov <[email protected]>
Cc: Tony Luck <[email protected]>
Cc: Jianyu Zhan <[email protected]>
Cc: Paul Gortmaker <[email protected]>
Cc: Andy Lutomirski <[email protected]>
Cc: Borislav Petkov <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Thomas Gleixner <[email protected]>
Diffstat (limited to 'net/unix/af_unix.c')
0 files changed, 0 insertions, 0 deletions