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authorFrederic Weisbecker <frederic@kernel.org>2022-02-07 16:59:06 +0100
committerPeter Zijlstra <peterz@infradead.org>2022-02-16 15:57:55 +0100
commit04d4e665a60902cf36e7ad39af1179cb5df542ad (patch)
tree17ea4303d84ad511a8ec1ad7884bfd9b110f119b /include/linux/sched
parentc8fb9f22ae22dbe06a43b77717299e1c3e632d5c (diff)
sched/isolation: Use single feature type while referring to housekeeping cpumask
Refer to housekeeping APIs using single feature types instead of flags. This prevents from passing multiple isolation features at once to housekeeping interfaces, which soon won't be possible anymore as each isolation features will have their own cpumask. Signed-off-by: Frederic Weisbecker <frederic@kernel.org> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Juri Lelli <juri.lelli@redhat.com> Reviewed-by: Phil Auld <pauld@redhat.com> Link: https://lore.kernel.org/r/20220207155910.527133-5-frederic@kernel.org
Diffstat (limited to 'include/linux/sched')
-rw-r--r--include/linux/sched/isolation.h43
1 files changed, 22 insertions, 21 deletions
diff --git a/include/linux/sched/isolation.h b/include/linux/sched/isolation.h
index cc9f393e2a70..8c15abd67aed 100644
--- a/include/linux/sched/isolation.h
+++ b/include/linux/sched/isolation.h
@@ -5,54 +5,55 @@
#include <linux/init.h>
#include <linux/tick.h>
-enum hk_flags {
- HK_FLAG_TIMER = 1,
- HK_FLAG_RCU = (1 << 1),
- HK_FLAG_MISC = (1 << 2),
- HK_FLAG_SCHED = (1 << 3),
- HK_FLAG_TICK = (1 << 4),
- HK_FLAG_DOMAIN = (1 << 5),
- HK_FLAG_WQ = (1 << 6),
- HK_FLAG_MANAGED_IRQ = (1 << 7),
- HK_FLAG_KTHREAD = (1 << 8),
+enum hk_type {
+ HK_TYPE_TIMER,
+ HK_TYPE_RCU,
+ HK_TYPE_MISC,
+ HK_TYPE_SCHED,
+ HK_TYPE_TICK,
+ HK_TYPE_DOMAIN,
+ HK_TYPE_WQ,
+ HK_TYPE_MANAGED_IRQ,
+ HK_TYPE_KTHREAD,
+ HK_TYPE_MAX
};
#ifdef CONFIG_CPU_ISOLATION
DECLARE_STATIC_KEY_FALSE(housekeeping_overridden);
-extern int housekeeping_any_cpu(enum hk_flags flags);
-extern const struct cpumask *housekeeping_cpumask(enum hk_flags flags);
-extern bool housekeeping_enabled(enum hk_flags flags);
-extern void housekeeping_affine(struct task_struct *t, enum hk_flags flags);
-extern bool housekeeping_test_cpu(int cpu, enum hk_flags flags);
+extern int housekeeping_any_cpu(enum hk_type type);
+extern const struct cpumask *housekeeping_cpumask(enum hk_type type);
+extern bool housekeeping_enabled(enum hk_type type);
+extern void housekeeping_affine(struct task_struct *t, enum hk_type type);
+extern bool housekeeping_test_cpu(int cpu, enum hk_type type);
extern void __init housekeeping_init(void);
#else
-static inline int housekeeping_any_cpu(enum hk_flags flags)
+static inline int housekeeping_any_cpu(enum hk_type type)
{
return smp_processor_id();
}
-static inline const struct cpumask *housekeeping_cpumask(enum hk_flags flags)
+static inline const struct cpumask *housekeeping_cpumask(enum hk_type type)
{
return cpu_possible_mask;
}
-static inline bool housekeeping_enabled(enum hk_flags flags)
+static inline bool housekeeping_enabled(enum hk_type type)
{
return false;
}
static inline void housekeeping_affine(struct task_struct *t,
- enum hk_flags flags) { }
+ enum hk_type type) { }
static inline void housekeeping_init(void) { }
#endif /* CONFIG_CPU_ISOLATION */
-static inline bool housekeeping_cpu(int cpu, enum hk_flags flags)
+static inline bool housekeeping_cpu(int cpu, enum hk_type type)
{
#ifdef CONFIG_CPU_ISOLATION
if (static_branch_unlikely(&housekeeping_overridden))
- return housekeeping_test_cpu(cpu, flags);
+ return housekeeping_test_cpu(cpu, type);
#endif
return true;
}