Messages in this thread Patch in this message | | | From | Andy Lutomirski <> | Subject | [RFC/INCOMPLETE 01/13] context_tracking: Add context_tracking_assert_state | Date | Tue, 16 Jun 2015 13:16:47 -0700 |
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This will let us sprinkle sanity checks around the kernel without making too much of a mess.
Signed-off-by: Andy Lutomirski <luto@kernel.org> --- include/linux/context_tracking.h | 8 ++++++++ 1 file changed, 8 insertions(+)
diff --git a/include/linux/context_tracking.h b/include/linux/context_tracking.h index 2821838256b4..0fbea4b152e1 100644 --- a/include/linux/context_tracking.h +++ b/include/linux/context_tracking.h @@ -57,6 +57,13 @@ static inline void context_tracking_task_switch(struct task_struct *prev, if (context_tracking_is_enabled()) __context_tracking_task_switch(prev, next); } + +static inline void context_tracking_assert_state(enum ctx_state state) +{ + rcu_lockdep_assert(!context_tracking_is_enabled() || + this_cpu_read(context_tracking.state) == state, + "context tracking state was wrong"); +} #else static inline void user_enter(void) { } static inline void user_exit(void) { } @@ -64,6 +71,7 @@ static inline enum ctx_state exception_enter(void) { return 0; } static inline void exception_exit(enum ctx_state prev_ctx) { } static inline void context_tracking_task_switch(struct task_struct *prev, struct task_struct *next) { } +static inline void context_tracking_assert_state(enum ctx_state state) { } #endif /* !CONFIG_CONTEXT_TRACKING */ -- 2.4.3
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