lkml.org 
[lkml]   [2015]   [Apr]   [3]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 1/2] nohz: add tick_nohz_full_set_cpus() API
Date
From: Chris Metcalf <cmetcalf@ezchip.com>

This is useful, for example, to modify a cpumask indicating some
special nohz-type functionality so that the nohz cores are
automatically added to that set.

Signed-off-by: Chris Metcalf <cmetcalf@ezchip.com>
---
include/linux/tick.h | 7 +++++++
1 file changed, 7 insertions(+)

diff --git a/include/linux/tick.h b/include/linux/tick.h
index d53ad4892a39..29456c443970 100644
--- a/include/linux/tick.h
+++ b/include/linux/tick.h
@@ -192,6 +192,12 @@ static inline void tick_nohz_full_clear_cpus(struct cpumask *mask)
cpumask_andnot(mask, mask, tick_nohz_full_mask);
}

+static inline void tick_nohz_full_set_cpus(struct cpumask *mask)
+{
+ if (tick_nohz_full_enabled())
+ cpumask_or(mask, mask, tick_nohz_full_mask);
+}
+
extern void __tick_nohz_full_check(void);
extern void tick_nohz_full_kick(void);
extern void tick_nohz_full_kick_cpu(int cpu);
@@ -201,6 +207,7 @@ extern void __tick_nohz_task_switch(struct task_struct *tsk);
static inline bool tick_nohz_full_enabled(void) { return false; }
static inline bool tick_nohz_full_cpu(int cpu) { return false; }
static inline void tick_nohz_full_clear_cpus(struct cpumask *mask) { }
+static inline void tick_nohz_full_set_cpus(struct cpumask *mask) { }
static inline void __tick_nohz_full_check(void) { }
static inline void tick_nohz_full_kick_cpu(int cpu) { }
static inline void tick_nohz_full_kick(void) { }
--
2.1.2


\
 
 \ /
  Last update: 2015-04-03 19:01    [W:9.425 / U:0.064 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site