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-rw-r--r--kernel/context_tracking.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/kernel/context_tracking.c b/kernel/context_tracking.c
index 247091bf0587..859c8dfd78a1 100644
--- a/kernel/context_tracking.c
+++ b/kernel/context_tracking.c
@@ -51,6 +51,15 @@ void context_tracking_user_enter(void)
51 unsigned long flags; 51 unsigned long flags;
52 52
53 /* 53 /*
54 * Repeat the user_enter() check here because some archs may be calling
55 * this from asm and if no CPU needs context tracking, they shouldn't
56 * go further. Repeat the check here until they support the static key
57 * check.
58 */
59 if (!static_key_false(&context_tracking_enabled))
60 return;
61
62 /*
54 * Some contexts may involve an exception occuring in an irq, 63 * Some contexts may involve an exception occuring in an irq,
55 * leading to that nesting: 64 * leading to that nesting:
56 * rcu_irq_enter() rcu_user_exit() rcu_user_exit() rcu_irq_exit() 65 * rcu_irq_enter() rcu_user_exit() rcu_user_exit() rcu_irq_exit()
@@ -151,6 +160,9 @@ void context_tracking_user_exit(void)
151{ 160{
152 unsigned long flags; 161 unsigned long flags;
153 162
163 if (!static_key_false(&context_tracking_enabled))
164 return;
165
154 if (in_interrupt()) 166 if (in_interrupt())
155 return; 167 return;
156 168