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author | Stephen Rothwell <sfr@canb.auug.org.au> | 2019-04-02 14:39:25 +1100 |
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committer | Stephen Rothwell <sfr@canb.auug.org.au> | 2019-04-02 14:39:25 +1100 |
commit | 39432cc358543aa098d54f53fae84bb0bfb17ed4 (patch) | |
tree | 7a826186ff5ca76f4aecadf311a49dab29095508 /include/linux | |
parent | 1999d633921bdbbf76c7f1065d15ec237a977c02 (diff) | |
parent | 713f1d1ae9dc30b02948ab740c434bb20258ddcf (diff) | |
download | linux-next-39432cc358543aa098d54f53fae84bb0bfb17ed4.tar.gz |
Merge branch 'akpm/master'
Diffstat (limited to 'include/linux')
-rw-r--r-- | include/linux/cgroup-defs.h | 5 | ||||
-rw-r--r-- | include/linux/memcontrol.h | 34 | ||||
-rw-r--r-- | include/linux/sched/signal.h | 51 |
3 files changed, 51 insertions, 39 deletions
diff --git a/include/linux/cgroup-defs.h b/include/linux/cgroup-defs.h index 1c70803e9f77..53669fdd5fad 100644 --- a/include/linux/cgroup-defs.h +++ b/include/linux/cgroup-defs.h @@ -83,6 +83,11 @@ enum { * Enable cpuset controller in v1 cgroup to use v2 behavior. */ CGRP_ROOT_CPUSET_V2_MODE = (1 << 4), + + /* + * Enable legacy local memory.events. + */ + CGRP_ROOT_MEMORY_LOCAL_EVENTS = (1 << 5), }; /* cftype->flags */ diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h index 4b5c53f83727..156583104e9b 100644 --- a/include/linux/memcontrol.h +++ b/include/linux/memcontrol.h @@ -94,8 +94,8 @@ enum mem_cgroup_events_target { MEM_CGROUP_NTARGETS, }; -struct mem_cgroup_stat_cpu { - long count[MEMCG_NR_STAT]; +struct memcg_vmstats_percpu { + long stat[MEMCG_NR_STAT]; unsigned long events[NR_VM_EVENT_ITEMS]; unsigned long nr_page_events; unsigned long targets[MEM_CGROUP_NTARGETS]; @@ -274,12 +274,12 @@ struct mem_cgroup { struct task_struct *move_lock_task; /* memory.stat */ - struct mem_cgroup_stat_cpu __percpu *stat_cpu; + struct memcg_vmstats_percpu __percpu *vmstats_percpu; MEMCG_PADDING(_pad2_); - atomic_long_t stat[MEMCG_NR_STAT]; - atomic_long_t events[NR_VM_EVENT_ITEMS]; + atomic_long_t vmstats[MEMCG_NR_STAT]; + atomic_long_t vmevents[NR_VM_EVENT_ITEMS]; atomic_long_t memory_events[MEMCG_NR_MEMORY_EVENTS]; unsigned long socket_pressure; @@ -569,7 +569,7 @@ void unlock_page_memcg(struct page *page); static inline unsigned long memcg_page_state(struct mem_cgroup *memcg, int idx) { - long x = atomic_long_read(&memcg->stat[idx]); + long x = atomic_long_read(&memcg->vmstats[idx]); #ifdef CONFIG_SMP if (x < 0) x = 0; @@ -586,12 +586,12 @@ static inline void __mod_memcg_state(struct mem_cgroup *memcg, if (mem_cgroup_disabled()) return; - x = val + __this_cpu_read(memcg->stat_cpu->count[idx]); + x = val + __this_cpu_read(memcg->vmstats_percpu->stat[idx]); if (unlikely(abs(x) > MEMCG_CHARGE_BATCH)) { - atomic_long_add(x, &memcg->stat[idx]); + atomic_long_add(x, &memcg->vmstats[idx]); x = 0; } - __this_cpu_write(memcg->stat_cpu->count[idx], x); + __this_cpu_write(memcg->vmstats_percpu->stat[idx], x); } /* idx can be of type enum memcg_stat_item or node_stat_item */ @@ -729,12 +729,12 @@ static inline void __count_memcg_events(struct mem_cgroup *memcg, if (mem_cgroup_disabled()) return; - x = count + __this_cpu_read(memcg->stat_cpu->events[idx]); + x = count + __this_cpu_read(memcg->vmstats_percpu->events[idx]); if (unlikely(x > MEMCG_CHARGE_BATCH)) { - atomic_long_add(x, &memcg->events[idx]); + atomic_long_add(x, &memcg->vmevents[idx]); x = 0; } - __this_cpu_write(memcg->stat_cpu->events[idx], x); + __this_cpu_write(memcg->vmstats_percpu->events[idx], x); } static inline void count_memcg_events(struct mem_cgroup *memcg, @@ -773,8 +773,14 @@ static inline void count_memcg_event_mm(struct mm_struct *mm, static inline void memcg_memory_event(struct mem_cgroup *memcg, enum memcg_memory_event event) { - atomic_long_inc(&memcg->memory_events[event]); - cgroup_file_notify(&memcg->events_file); + do { + atomic_long_inc(&memcg->memory_events[event]); + cgroup_file_notify(&memcg->events_file); + + if (cgrp_dfl_root.flags & CGRP_ROOT_MEMORY_LOCAL_EVENTS) + break; + } while ((memcg = parent_mem_cgroup(memcg)) && + !mem_cgroup_is_root(memcg)); } static inline void memcg_memory_event_mm(struct mm_struct *mm, diff --git a/include/linux/sched/signal.h b/include/linux/sched/signal.h index e412c092c1e8..38a0f0785323 100644 --- a/include/linux/sched/signal.h +++ b/include/linux/sched/signal.h @@ -271,17 +271,18 @@ static inline int signal_group_exit(const struct signal_struct *sig) extern void flush_signals(struct task_struct *); extern void ignore_signals(struct task_struct *); extern void flush_signal_handlers(struct task_struct *, int force_default); -extern int dequeue_signal(struct task_struct *tsk, sigset_t *mask, kernel_siginfo_t *info); +extern int dequeue_signal(struct task_struct *task, + sigset_t *mask, kernel_siginfo_t *info); static inline int kernel_dequeue_signal(void) { - struct task_struct *tsk = current; + struct task_struct *task = current; kernel_siginfo_t __info; int ret; - spin_lock_irq(&tsk->sighand->siglock); - ret = dequeue_signal(tsk, &tsk->blocked, &__info); - spin_unlock_irq(&tsk->sighand->siglock); + spin_lock_irq(&task->sighand->siglock); + ret = dequeue_signal(task, &task->blocked, &__info); + spin_unlock_irq(&task->sighand->siglock); return ret; } @@ -419,18 +420,18 @@ static inline void set_restore_sigmask(void) WARN_ON(!test_thread_flag(TIF_SIGPENDING)); } -static inline void clear_tsk_restore_sigmask(struct task_struct *tsk) +static inline void clear_tsk_restore_sigmask(struct task_struct *task) { - clear_tsk_thread_flag(tsk, TIF_RESTORE_SIGMASK); + clear_tsk_thread_flag(task, TIF_RESTORE_SIGMASK); } static inline void clear_restore_sigmask(void) { clear_thread_flag(TIF_RESTORE_SIGMASK); } -static inline bool test_tsk_restore_sigmask(struct task_struct *tsk) +static inline bool test_tsk_restore_sigmask(struct task_struct *task) { - return test_tsk_thread_flag(tsk, TIF_RESTORE_SIGMASK); + return test_tsk_thread_flag(task, TIF_RESTORE_SIGMASK); } static inline bool test_restore_sigmask(void) { @@ -449,9 +450,9 @@ static inline void set_restore_sigmask(void) current->restore_sigmask = true; WARN_ON(!test_thread_flag(TIF_SIGPENDING)); } -static inline void clear_tsk_restore_sigmask(struct task_struct *tsk) +static inline void clear_tsk_restore_sigmask(struct task_struct *task) { - tsk->restore_sigmask = false; + task->restore_sigmask = false; } static inline void clear_restore_sigmask(void) { @@ -461,9 +462,9 @@ static inline bool test_restore_sigmask(void) { return current->restore_sigmask; } -static inline bool test_tsk_restore_sigmask(struct task_struct *tsk) +static inline bool test_tsk_restore_sigmask(struct task_struct *task) { - return tsk->restore_sigmask; + return task->restore_sigmask; } static inline bool test_and_clear_restore_sigmask(void) { @@ -617,9 +618,9 @@ static inline struct pid *task_session(struct task_struct *task) return task->signal->pids[PIDTYPE_SID]; } -static inline int get_nr_threads(struct task_struct *tsk) +static inline int get_nr_threads(struct task_struct *task) { - return tsk->signal->nr_threads; + return task->signal->nr_threads; } static inline bool thread_group_leader(struct task_struct *p) @@ -658,35 +659,35 @@ static inline int thread_group_empty(struct task_struct *p) #define delay_group_leader(p) \ (thread_group_leader(p) && !thread_group_empty(p)) -extern struct sighand_struct *__lock_task_sighand(struct task_struct *tsk, +extern struct sighand_struct *__lock_task_sighand(struct task_struct *task, unsigned long *flags); -static inline struct sighand_struct *lock_task_sighand(struct task_struct *tsk, +static inline struct sighand_struct *lock_task_sighand(struct task_struct *task, unsigned long *flags) { struct sighand_struct *ret; - ret = __lock_task_sighand(tsk, flags); - (void)__cond_lock(&tsk->sighand->siglock, ret); + ret = __lock_task_sighand(task, flags); + (void)__cond_lock(&task->sighand->siglock, ret); return ret; } -static inline void unlock_task_sighand(struct task_struct *tsk, +static inline void unlock_task_sighand(struct task_struct *task, unsigned long *flags) { - spin_unlock_irqrestore(&tsk->sighand->siglock, *flags); + spin_unlock_irqrestore(&task->sighand->siglock, *flags); } -static inline unsigned long task_rlimit(const struct task_struct *tsk, +static inline unsigned long task_rlimit(const struct task_struct *task, unsigned int limit) { - return READ_ONCE(tsk->signal->rlim[limit].rlim_cur); + return READ_ONCE(task->signal->rlim[limit].rlim_cur); } -static inline unsigned long task_rlimit_max(const struct task_struct *tsk, +static inline unsigned long task_rlimit_max(const struct task_struct *task, unsigned int limit) { - return READ_ONCE(tsk->signal->rlim[limit].rlim_max); + return READ_ONCE(task->signal->rlim[limit].rlim_max); } static inline unsigned long rlimit(unsigned int limit) |