Commit ade3f680 authored by Thomas Gleixner's avatar Thomas Gleixner

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: default avatarThomas Gleixner <tglx@linutronix.de>
Tested-by: default avatarPaul E. McKenney <paulmck@linux.vnet.ibm.com>
Acked-by: default avatarPaul E. McKenney <paulmck@linux.vnet.ibm.com>
Acked-by: default avatarIngo 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
parent 8f553c49
...@@ -103,6 +103,7 @@ extern void cpus_write_lock(void); ...@@ -103,6 +103,7 @@ extern void cpus_write_lock(void);
extern void cpus_write_unlock(void); extern void cpus_write_unlock(void);
extern void cpus_read_lock(void); extern void cpus_read_lock(void);
extern void cpus_read_unlock(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_disable(void);
extern void cpu_hotplug_enable(void); extern void cpu_hotplug_enable(void);
void clear_tasks_mm_cpumask(int cpu); void clear_tasks_mm_cpumask(int cpu);
...@@ -114,6 +115,7 @@ static inline void cpus_write_lock(void) { } ...@@ -114,6 +115,7 @@ static inline void cpus_write_lock(void) { }
static inline void cpus_write_unlock(void) { } static inline void cpus_write_unlock(void) { }
static inline void cpus_read_lock(void) { } static inline void cpus_read_lock(void) { }
static inline void cpus_read_unlock(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_disable(void) { }
static inline void cpu_hotplug_enable(void) { } static inline void cpu_hotplug_enable(void) { }
#endif /* !CONFIG_HOTPLUG_CPU */ #endif /* !CONFIG_HOTPLUG_CPU */
......
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