diff options
| author | Paul Burton <paul.burton@imgtec.com> | 2017-06-02 14:48:50 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@google.com> | 2018-02-05 08:58:35 -0800 |
| commit | fb77eb94a33ddd06c52257d02f77362df4f52c70 (patch) | |
| tree | ae5fef1f122c1bbfabada25a3c326dc9b9c34fe7 /tools/perf/scripts/python/bin | |
| parent | b4af2637b68c69878febbff5a392af838b9b57ff (diff) | |
UPSTREAM: MIPS: CM: Avoid per-core locking with CM3 & higher
CM3 provides a GCR_CL_OTHER register per VP, rather than only per core.
This means that we don't need to prevent other VPs within a core from
racing with code that makes use of the core-other register region.
Reduce locking overhead by demoting the per-core spinlock providing
protection for CM2.5 & lower to a per-CPU/per-VP spinlock for CM3 &
higher.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/16193/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
(cherry picked from commit 516db1c61f3fd4328361699a2c74781ab1dbf84c)
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Diffstat (limited to 'tools/perf/scripts/python/bin')
0 files changed, 0 insertions, 0 deletions