| From: Thomas Gleixner <tglx@linutronix.de> |
| Date: Wed, 24 May 2017 10:15:13 +0200 |
| Subject: [PATCH 02/32] 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 |
| --- |
| include/linux/cpu.h | 2 ++ |
| 1 file changed, 2 insertions(+) |
| |
| --- 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 */ |
