diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2017-05-24 10:15:40 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2017-05-26 10:10:46 +0200 |
| commit | fc8dffd379ca5620664336eb895a426b42847558 (patch) | |
| tree | 053ec8e0625ff5cbc22ec0448db77774bb8383a4 /include/linux/cpu.h | |
| parent | 5d5dbc4ef27e72104dea6102e4d1a1bf5a8ed971 (diff) | |
| download | lwn-fc8dffd379ca5620664336eb895a426b42847558.tar.gz lwn-fc8dffd379ca5620664336eb895a426b42847558.zip | |
cpu/hotplug: Convert hotplug locking to percpu rwsem
There are no more (known) nested calls to get_online_cpus() and all
observed lock ordering problems have been addressed.
Replace the magic nested 'rwsem' hackery with a percpu-rwsem.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-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/20170524081549.447014063@linutronix.de
Diffstat (limited to 'include/linux/cpu.h')
| -rw-r--r-- | include/linux/cpu.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/cpu.h b/include/linux/cpu.h index af4d660798e5..ca73bc1563f4 100644 --- a/include/linux/cpu.h +++ b/include/linux/cpu.h @@ -103,7 +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 lockdep_assert_cpus_held(void); extern void cpu_hotplug_disable(void); extern void cpu_hotplug_enable(void); void clear_tasks_mm_cpumask(int cpu); |