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| author | Frederic Weisbecker <frederic@kernel.org> | 2017-10-27 04:42:31 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2017-10-27 09:55:26 +0200 |
| commit | 7e56a1cf4b28f5739526877b8dbad623fae2e4e7 (patch) | |
| tree | 5f540ce0a22d30caed0fb1e54f865ea65373ff38 /kernel/sched | |
| parent | 9f0ca2d97ef0b5e966be2cfef26c7c094ec14e41 (diff) | |
| download | linux-7e56a1cf4b28f5739526877b8dbad623fae2e4e7.tar.gz linux-7e56a1cf4b28f5739526877b8dbad623fae2e4e7.tar.bz2 linux-7e56a1cf4b28f5739526877b8dbad623fae2e4e7.zip | |
sched/isolation: Make the housekeeping cpumask private
Nobody needs to access this detail. housekeeping_cpumask() already
takes care of it.
Signed-off-by: Frederic Weisbecker <frederic@kernel.org>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Chris Metcalf <cmetcalf@mellanox.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Luiz Capitulino <lcapitulino@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: Wanpeng Li <kernellwp@gmail.com>
Link: http://lkml.kernel.org/r/1509072159-31808-5-git-send-email-frederic@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/sched')
| -rw-r--r-- | kernel/sched/isolation.c | 36 |
1 files changed, 35 insertions, 1 deletions
diff --git a/kernel/sched/isolation.c b/kernel/sched/isolation.c index 3589252ed476..16445097eb25 100644 --- a/kernel/sched/isolation.c +++ b/kernel/sched/isolation.c @@ -11,7 +11,41 @@ #include <linux/init.h> #include <linux/kernel.h> -cpumask_var_t housekeeping_mask; +static cpumask_var_t housekeeping_mask; + +int housekeeping_any_cpu(void) +{ + if (tick_nohz_full_enabled()) + return cpumask_any_and(housekeeping_mask, cpu_online_mask); + + return smp_processor_id(); +} +EXPORT_SYMBOL_GPL(housekeeping_any_cpu); + +const struct cpumask *housekeeping_cpumask(void) +{ + if (tick_nohz_full_enabled()) + return housekeeping_mask; + + return cpu_possible_mask; +} +EXPORT_SYMBOL_GPL(housekeeping_cpumask); + +void housekeeping_affine(struct task_struct *t) +{ + if (tick_nohz_full_enabled()) + set_cpus_allowed_ptr(t, housekeeping_mask); +} +EXPORT_SYMBOL_GPL(housekeeping_affine); + +bool housekeeping_test_cpu(int cpu) +{ + if (tick_nohz_full_enabled()) + return cpumask_test_cpu(cpu, housekeeping_mask); + + return true; +} +EXPORT_SYMBOL_GPL(housekeeping_test_cpu); void __init housekeeping_init(void) { |