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| author | Paul Burton <paul.burton@imgtec.com> | 2014-03-07 14:42:52 +0400 |
|---|---|---|
| committer | Paul Burton <paul.burton@imgtec.com> | 2014-05-28 19:20:30 +0400 |
| commit | dd9233d0470bb8b02b30982c1de0a2dbffb407d5 (patch) | |
| tree | e46190f57b2f17a0b9f8d67f09c1670f6e5c1eaa /arch/mips/include/asm/smp-cps.h | |
| parent | 0f4d3d1155d9a5e71e74658ac50b61141e370cf3 (diff) | |
| download | linux-dd9233d0470bb8b02b30982c1de0a2dbffb407d5.tar.xz | |
MIPS: smp-cps: use CPC core-other locking
The core which the CPC core-other region relates to is based upon the
core-local core-other addressing register. As its name suggests this
register is shared between all VPEs within a core, and if there is a
possibility that multiple VPEs within a core will attempt to access
another core simultaneously then locking is required. This wasn't
previously a problem with the only user being cpu0 during boot, but will
be an issue once hotplug is implemented & may race with other users such
as cpuidle.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Diffstat (limited to 'arch/mips/include/asm/smp-cps.h')
0 files changed, 0 insertions, 0 deletions