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| author | Paul Burton <paul.burton@imgtec.com> | 2017-08-12 19:49:37 -0700 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2017-08-30 00:57:27 +0200 |
| commit | fe7a38c625a2ee375870567c9fc8302e51e550f7 (patch) | |
| tree | 116de1ad4eb37d1e5944c322c889505d5ac5e1e3 /drivers/cpuidle | |
| parent | 856fbcee6099a292f62b9d23c946704f9ffe19f3 (diff) | |
| download | lwn-fe7a38c625a2ee375870567c9fc8302e51e550f7.tar.gz lwn-fe7a38c625a2ee375870567c9fc8302e51e550f7.zip | |
MIPS: Unify checks for sibling CPUs
Up until now we have open-coded checks for whether CPUs are siblings,
with slight variations on whether we consider the package ID or not.
This will only get more complex when we introduce cluster support, so in
preparation for that this patch introduces a cpus_are_siblings()
function which can be used to check whether or not 2 CPUs are siblings
in a consistent manner.
By checking globalnumber with the VP ID masked out this also has the
neat side effect of being ready for multi-cluster systems already.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Acked-by: Rafael J. Wysocki <rjw@rjwysocki.net>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/17011/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'drivers/cpuidle')
| -rw-r--r-- | drivers/cpuidle/cpuidle-cps.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/cpuidle/cpuidle-cps.c b/drivers/cpuidle/cpuidle-cps.c index 6041b6104f3d..72b5e47286b4 100644 --- a/drivers/cpuidle/cpuidle-cps.c +++ b/drivers/cpuidle/cpuidle-cps.c @@ -37,7 +37,7 @@ static int cps_nc_enter(struct cpuidle_device *dev, * TODO: don't treat core 0 specially, just prevent the final core * TODO: remap interrupt affinity temporarily */ - if (!cpu_core(&cpu_data[dev->cpu]) && (index > STATE_NC_WAIT)) + if (cpus_are_siblings(0, dev->cpu) && (index > STATE_NC_WAIT)) index = STATE_NC_WAIT; /* Select the appropriate cps_pm_state */ |