Commit-ID: 9ff138bdbcf1175c138c7f89a9daa918b51bc33a
Gitweb: https://git.kernel.org/tip/9ff138bdbcf1175c138c7f89a9daa918b51bc33a
Author: Frederic Weisbecker <frederic@xxxxxxxxxx>
AuthorDate: Tue, 24 Oct 2017 15:06:53 +0200
Committer: Ingo Molnar <mingo@xxxxxxxxxx>
CommitDate: Tue, 24 Oct 2017 15:20:14 +0200
housekeeping: Make housekeeping cpumask private
Nobody needs to access this detail. housekeeping_cpumask() already
takes care about it.
Signed-off-by: Frederic Weisbecker <frederic@xxxxxxxxxx>
Cc: Chris Metcalf <cmetcalf@xxxxxxxxxxxx>
Cc: Christoph Lameter <cl@xxxxxxxxx>
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: Luiz Capitulino <lcapitulino@xxxxxxxxxx>
Cc: Mike Galbraith <efault@xxxxxx>
Cc: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Rik van Riel <riel@xxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Wanpeng Li <kernellwp@xxxxxxxxx>
Link: http://lkml.kernel.org/r/1508850421-10058-5-git-send-email-frederic@xxxxxxxxxx
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
---
include/linux/housekeeping.h | 31 ++++++++++---------------------
kernel/housekeeping.c | 33 ++++++++++++++++++++++++++++++++-
2 files changed, 42 insertions(+), 22 deletions(-)
diff --git a/include/linux/housekeeping.h b/include/linux/housekeeping.h
index 64d0ee5..31a1401 100644
--- a/include/linux/housekeeping.h
+++ b/include/linux/housekeeping.h
@@ -6,46 +6,35 @@
#include <linux/tick.h>
#ifdef CONFIG_NO_HZ_FULL
-extern cpumask_var_t housekeeping_mask;
+extern int housekeeping_any_cpu(void);
+extern const struct cpumask *housekeeping_cpumask(void);
+extern void housekeeping_affine(struct task_struct *t);
+extern bool housekeeping_test_cpu(int cpu);
extern void __init housekeeping_init(void);
+
#else
-static inline void housekeeping_init(void) { }
-#endif /* CONFIG_NO_HZ_FULL */
static inline int housekeeping_any_cpu(void)
{
-#ifdef CONFIG_NO_HZ_FULL
- if (tick_nohz_full_enabled())
- return cpumask_any_and(housekeeping_mask, cpu_online_mask);
-#endif
return smp_processor_id();
}
static inline const struct cpumask *housekeeping_cpumask(void)
{
-#ifdef CONFIG_NO_HZ_FULL
- if (tick_nohz_full_enabled())
- return housekeeping_mask;
-#endif
return cpu_possible_mask;
}
+static inline void housekeeping_affine(struct task_struct *t) { }
+static inline void housekeeping_init(void) { }
+#endif /* CONFIG_NO_HZ_FULL */
+
static inline bool is_housekeeping_cpu(int cpu)
{
#ifdef CONFIG_NO_HZ_FULL
if (tick_nohz_full_enabled())
- return cpumask_test_cpu(cpu, housekeeping_mask);
+ return housekeeping_test_cpu(cpu);
#endif
return true;
}
-static inline void housekeeping_affine(struct task_struct *t)
-{
-#ifdef CONFIG_NO_HZ_FULL
- if (tick_nohz_full_enabled())
- set_cpus_allowed_ptr(t, housekeeping_mask);
-
-#endif
-}
-
#endif /* _LINUX_HOUSEKEEPING_H */
diff --git a/kernel/housekeeping.c b/kernel/housekeeping.c
index b41c52e..0e70dc8 100644
--- a/kernel/housekeeping.c
+++ b/kernel/housekeeping.c
@@ -11,7 +11,38 @@
#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();
+}
+
+const struct cpumask *housekeeping_cpumask(void)
+{
+ if (tick_nohz_full_enabled())
+ return housekeeping_mask;
+
+ return cpu_possible_mask;
+}
+
+void housekeeping_affine(struct task_struct *t)
+{
+ if (tick_nohz_full_enabled())
+ set_cpus_allowed_ptr(t, housekeeping_mask);
+}
+
+bool housekeeping_test_cpu(int cpu)
+{
+ if (tick_nohz_full_enabled())
+ return cpumask_test_cpu(cpu, housekeeping_mask);
+
+ return true;
+}
+
void __init housekeeping_init(void)
{
--
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