diff options
| author | Morten Rasmussen <morten.rasmussen@arm.com> | 2018-07-20 14:32:32 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2018-09-10 11:05:47 +0200 |
| commit | bb1fbdd3c3fd12b612c7d8cdf13bd6bfeebdefa3 (patch) | |
| tree | 53443cde7e4e1c35b502c788ff32fb3526604b37 /include/linux/arch_topology.h | |
| parent | 05484e0984487d42e97c417cbb0697fa9d16e7e9 (diff) | |
sched/topology, drivers/base/arch_topology: Rebuild the sched_domain hierarchy when capacities change
The setting of SD_ASYM_CPUCAPACITY depends on the per-CPU capacities.
These might not have their final values when the hierarchy is initially
built as the values depend on cpufreq to be initialized or the values
being set through sysfs. To ensure that the flags are set correctly we
need to rebuild the sched_domain hierarchy whenever the reported per-CPU
capacity (arch_scale_cpu_capacity()) changes.
This patch ensure that a full sched_domain rebuild happens when CPU
capacity changes occur.
Signed-off-by: Morten Rasmussen <morten.rasmussen@arm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: dietmar.eggemann@arm.com
Cc: valentin.schneider@arm.com
Cc: vincent.guittot@linaro.org
Link: http://lkml.kernel.org/r/1532093554-30504-3-git-send-email-morten.rasmussen@arm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'include/linux/arch_topology.h')
| -rw-r--r-- | include/linux/arch_topology.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/arch_topology.h b/include/linux/arch_topology.h index 2b709416de05..d9bdc1a7f4e7 100644 --- a/include/linux/arch_topology.h +++ b/include/linux/arch_topology.h @@ -9,6 +9,7 @@ #include <linux/percpu.h> void topology_normalize_cpu_scale(void); +int topology_update_cpu_topology(void); struct device_node; bool topology_parse_cpu_capacity(struct device_node *cpu_node, int cpu); |