This allows us to check if a remote CPU runs vtime accounting (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/vtime.h | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/include/linux/vtime.h b/include/linux/vtime.h index 82fed7a..a53f6ea 100644 --- a/include/linux/vtime.h +++ b/include/linux/vtime.h @@ -31,6 +31,16 @@ static inline bool vtime_accounting_enabled(void) return context_tracking_enabled(); } +static inline bool vtime_accounting_enabled_cpu(int cpu) +{ + if (vtime_accounting_enabled()) { + if (context_tracking_enabled_cpu(cpu)) + return true; + } + + return false; +} + static inline bool vtime_accounting_enabled_this_cpu(void) { if (vtime_accounting_enabled()) { @@ -51,6 +61,7 @@ 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) { } -- 2.7.4
