This allows us to check if a remote CPU runs vtime accounting (ie: is nohz_full). We'll need that to reliably support reading kcpustat on nohz_full CPUs.
Also simplify a bit the condition in the local flavoured function while at it. 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/vtime.h | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-) diff --git a/include/linux/vtime.h b/include/linux/vtime.h index eb2e7a19054b..e2733bf33541 100644 --- a/include/linux/vtime.h +++ b/include/linux/vtime.h @@ -31,14 +31,14 @@ static inline bool vtime_accounting_enabled(void) return context_tracking_enabled(); } +static inline bool vtime_accounting_enabled_cpu(int cpu) +{ + return (vtime_accounting_enabled() && context_tracking_enabled_cpu(cpu)); +} + static inline bool vtime_accounting_enabled_this_cpu(void) { - if (vtime_accounting_enabled()) { - if (context_tracking_enabled_this_cpu()) - return true; - } - - return false; + return (vtime_accounting_enabled() && context_tracking_enabled_this_cpu()); } extern void vtime_task_switch_generic(struct task_struct *prev); @@ -51,6 +51,7 @@ static inline void vtime_task_switch(struct task_struct *prev) #else /* !CONFIG_VIRT_CPU_ACCOUNTING */ +static inline bool vtime_accounting_enabled_cpu(int cpu) {return false; } static inline bool vtime_accounting_enabled_this_cpu(void) { return false; } static inline void vtime_task_switch(struct task_struct *prev) { } -- 2.23.0
