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authorThomas Gleixner <tglx@linutronix.de>2017-05-24 10:15:13 +0200
committerThomas Gleixner <tglx@linutronix.de>2017-05-26 10:10:35 +0200
commitade3f680a76b474d9f5375a9b1d100ee787bf469 (patch)
tree6f56a7f8159ca6c0675c98626a426e630637ad86 /include/linux/cpu.h
parent8f553c498e1772cccb39a114da4a498d22992758 (diff)
cpu/hotplug: Provide lockdep_assert_cpus_held()
Provide a stub function which can be used in places where existing get_online_cpus() calls are moved to call sites. This stub is going to be filled by the final conversion of the hotplug locking mechanism to a percpu rwsem. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Acked-by: Ingo Molnar <mingo@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sebastian Siewior <bigeasy@linutronix.de> Cc: Steven Rostedt <rostedt@goodmis.org> Link: http://lkml.kernel.org/r/20170524081547.161282442@linutronix.de
Diffstat (limited to 'include/linux/cpu.h')
-rw-r--r--include/linux/cpu.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/cpu.h b/include/linux/cpu.h
index 055876003914..af4d660798e5 100644
--- a/include/linux/cpu.h
+++ b/include/linux/cpu.h
@@ -103,6 +103,7 @@ extern void cpus_write_lock(void);
extern void cpus_write_unlock(void);
extern void cpus_read_lock(void);
extern void cpus_read_unlock(void);
+static inline void lockdep_assert_cpus_held(void) { }
extern void cpu_hotplug_disable(void);
extern void cpu_hotplug_enable(void);
void clear_tasks_mm_cpumask(int cpu);
@@ -114,6 +115,7 @@ static inline void cpus_write_lock(void) { }
static inline void cpus_write_unlock(void) { }
static inline void cpus_read_lock(void) { }
static inline void cpus_read_unlock(void) { }
+static inline void lockdep_assert_cpus_held(void) { }
static inline void cpu_hotplug_disable(void) { }
static inline void cpu_hotplug_enable(void) { }
#endif /* !CONFIG_HOTPLUG_CPU */