hulk inclusion category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/ICAOAT -------------------------------- Add cgroup_ifs_enter/leave_lock helper for lock type interference. Signed-off-by: Pu Lehui <pulehui@huawei.com> --- include/linux/cgroup.h | 41 +++++++++++++++++++++++++++++++++++++++-- 1 file changed, 39 insertions(+), 2 deletions(-) diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h index 9a9c95bd5d60..4b23632e7206 100644 --- a/include/linux/cgroup.h +++ b/include/linux/cgroup.h @@ -10,6 +10,7 @@ */ #include <linux/sched.h> +#include <linux/sched/clock.h> #include <linux/cpumask.h> #include <linux/nodemask.h> #include <linux/rculist.h> @@ -860,8 +861,6 @@ static inline void cgroup_bpf_put(struct cgroup *cgrp) {} void cgroup_move_task_to_root(struct task_struct *tsk); #endif -#ifdef CONFIG_CGROUP_IFS - enum ifs_types { IFS_SMT, IFS_RUNDELAY, @@ -877,6 +876,8 @@ enum ifs_types { NR_IFS_TYPES, }; +#ifdef CONFIG_CGROUP_IFS + struct cgroup_ifs_cpu { /* total time for each interference, in ns */ u64 time[NR_IFS_TYPES]; @@ -927,6 +928,40 @@ static inline void cgroup_ifs_account_delta(struct cgroup_ifs_cpu *ifsc, ifsc->time[type] += delta; } +static inline u64 cgroup_ifs_time_counter(void) +{ + return sched_clock(); +} + +static inline void cgroup_ifs_enter_lock(u64 *clock) +{ + struct cgroup_ifs *ifs; + + if (!cgroup_ifs_enabled()) + return; + + ifs = current_ifs(); + if (ifs) + *clock = cgroup_ifs_time_counter(); +} + +static inline void cgroup_ifs_leave_lock(u64 clock, enum ifs_types t) +{ + u64 delta; + struct cgroup_ifs *ifs; + struct cgroup_ifs_cpu *ifsc; + + if (!cgroup_ifs_enabled()) + return; + + ifs = current_ifs(); + if (ifs) { + ifsc = this_cpu_ptr(ifs->pcpu); + delta = cgroup_ifs_time_counter() - clock; + cgroup_ifs_account_delta(ifsc, t, delta); + } +} + void cgroup_ifs_account_smttime(struct task_struct *prev, struct task_struct *next, struct task_struct *idle); @@ -1035,6 +1070,8 @@ void cgroup_ifs_enable_sleep_account(void); #endif #else /* !CONFIG_CGROUP_IFS */ +static inline void cgroup_ifs_enter_lock(u64 *clock) {} +static inline void cgroup_ifs_leave_lock(u64 clock, enum ifs_types t) {} static inline void cgroup_ifs_account_smttime(struct task_struct *prev, struct task_struct *next, struct task_struct *idle) {} -- 2.34.1