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authorIngo Molnar <mingo@kernel.org>2018-12-04 01:52:30 -0500
committerIngo Molnar <mingo@kernel.org>2018-12-04 01:52:30 -0500
commit4bbfd7467cfc7d42e18d3008fa6a28ffd56e901a (patch)
tree3b6d27e740976d0393fd13ae675ae6a0e07812a9 /kernel/livepatch/patch.c
parent2595646791c319cadfdbf271563aac97d0843dc7 (diff)
parent5ac7cdc29897e5fc3f5e214f3f8c8b03ef8d7029 (diff)
Merge branch 'for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu
Pull RCU changes from Paul E. McKenney: - Convert RCU's BUG_ON() and similar calls to WARN_ON() and similar. - Replace calls of RCU-bh and RCU-sched update-side functions to their vanilla RCU counterparts. This series is a step towards complete removal of the RCU-bh and RCU-sched update-side functions. ( Note that some of these conversions are going upstream via their respective maintainers. ) - Documentation updates, including a number of flavor-consolidation updates from Joel Fernandes. - Miscellaneous fixes. - Automate generation of the initrd filesystem used for rcutorture testing. - Convert spin_is_locked() assertions to instead use lockdep. ( Note that some of these conversions are going upstream via their respective maintainers. ) - SRCU updates, especially including a fix from Dennis Krein for a bag-on-head-class bug. - RCU torture-test updates. Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/livepatch/patch.c')
-rw-r--r--kernel/livepatch/patch.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/livepatch/patch.c b/kernel/livepatch/patch.c
index 82d584225dc6..7702cb4064fc 100644
--- a/kernel/livepatch/patch.c
+++ b/kernel/livepatch/patch.c
@@ -61,7 +61,7 @@ static void notrace klp_ftrace_handler(unsigned long ip,
61 ops = container_of(fops, struct klp_ops, fops); 61 ops = container_of(fops, struct klp_ops, fops);
62 62
63 /* 63 /*
64 * A variant of synchronize_sched() is used to allow patching functions 64 * A variant of synchronize_rcu() is used to allow patching functions
65 * where RCU is not watching, see klp_synchronize_transition(). 65 * where RCU is not watching, see klp_synchronize_transition().
66 */ 66 */
67 preempt_disable_notrace(); 67 preempt_disable_notrace();
@@ -72,7 +72,7 @@ static void notrace klp_ftrace_handler(unsigned long ip,
72 /* 72 /*
73 * func should never be NULL because preemption should be disabled here 73 * func should never be NULL because preemption should be disabled here
74 * and unregister_ftrace_function() does the equivalent of a 74 * and unregister_ftrace_function() does the equivalent of a
75 * synchronize_sched() before the func_stack removal. 75 * synchronize_rcu() before the func_stack removal.
76 */ 76 */
77 if (WARN_ON_ONCE(!func)) 77 if (WARN_ON_ONCE(!func))
78 goto unlock; 78 goto unlock;