Messages in this thread Patch in this message | | | Date | Wed, 8 Nov 2017 02:54:09 -0800 | From | tip-bot for Frederic Weisbecker <> | Subject | [tip:locking/core] smp/core: Use lockdep to assert IRQs are disabled/enabled |
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Commit-ID: 83efcbd028ad3aec36b5a3882cfa32490c135df7 Gitweb: https://git.kernel.org/tip/83efcbd028ad3aec36b5a3882cfa32490c135df7 Author: Frederic Weisbecker <frederic@kernel.org> AuthorDate: Mon, 6 Nov 2017 16:01:22 +0100 Committer: Ingo Molnar <mingo@kernel.org> CommitDate: Wed, 8 Nov 2017 11:13:50 +0100
smp/core: Use lockdep to assert IRQs are disabled/enabled
Use lockdep to check that IRQs are enabled or disabled as expected. This way the sanity check only shows overhead when concurrency correctness debug code is enabled.
Signed-off-by: Frederic Weisbecker <frederic@kernel.org> Acked-by: Thomas Gleixner <tglx@linutronix.de> Cc: David S . Miller <davem@davemloft.net> Cc: Lai Jiangshan <jiangshanlai@gmail.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Tejun Heo <tj@kernel.org> Link: http://lkml.kernel.org/r/1509980490-4285-7-git-send-email-frederic@kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org> --- kernel/smp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/smp.c b/kernel/smp.c index c94dd85..084c8b3 100644 --- a/kernel/smp.c +++ b/kernel/smp.c @@ -213,7 +213,7 @@ static void flush_smp_call_function_queue(bool warn_cpu_offline) call_single_data_t *csd, *csd_next; static bool warned; - WARN_ON(!irqs_disabled()); + lockdep_assert_irqs_disabled(); head = this_cpu_ptr(&call_single_queue); entry = llist_del_all(head);
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