This allows us to check if a remote CPU runs context tracking (ie: is nohz_full). We'll need that to reliably support "nice" accounting on kcpustat.
Signed-off-by: Frederic Weisbecker <[email protected]> Cc: Yauheni Kaliuta <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: Rik van Riel <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Wanpeng Li <[email protected]> Cc: Ingo Molnar <[email protected]> --- include/linux/context_tracking_state.h | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/include/linux/context_tracking_state.h b/include/linux/context_tracking_state.h index 08f125f..5877177 100644 --- a/include/linux/context_tracking_state.h +++ b/include/linux/context_tracking_state.h @@ -31,6 +31,11 @@ static inline bool context_tracking_enabled(void) return static_branch_unlikely(&context_tracking_key); } +static inline bool context_tracking_enabled_cpu(int cpu) +{ + return per_cpu(context_tracking.active, cpu); +} + static inline bool context_tracking_enabled_this_cpu(void) { return __this_cpu_read(context_tracking.active); @@ -43,6 +48,7 @@ static inline bool context_tracking_in_user(void) #else static inline bool context_tracking_in_user(void) { return false; } static inline bool context_tracking_enabled(void) { return false; } +static inline bool context_tracking_enabled_cpu(int cpu) { return false; } static inline bool context_tracking_enabled_this_cpu(void) { return false; } #endif /* CONFIG_CONTEXT_TRACKING */ -- 2.7.4
