diff options
Diffstat (limited to 'kernel')
-rw-r--r-- | kernel/cgroup.c | 8 | ||||
-rw-r--r-- | kernel/exit.c | 4 | ||||
-rw-r--r-- | kernel/irq/handle.c | 1 | ||||
-rw-r--r-- | kernel/mutex-debug.c | 1 | ||||
-rw-r--r-- | kernel/perf_event.c | 2 | ||||
-rw-r--r-- | kernel/power/suspend_test.c | 5 | ||||
-rw-r--r-- | kernel/sched.c | 13 | ||||
-rw-r--r-- | kernel/sched_fair.c | 27 | ||||
-rw-r--r-- | kernel/sys.c | 2 | ||||
-rw-r--r-- | kernel/sysctl_check.c | 2 | ||||
-rw-r--r-- | kernel/time/timekeeping.c | 1 | ||||
-rw-r--r-- | kernel/trace/trace.c | 2 | ||||
-rw-r--r-- | kernel/trace/trace_events_filter.c | 3 | ||||
-rw-r--r-- | kernel/workqueue.c | 18 |
14 files changed, 56 insertions, 33 deletions
diff --git a/kernel/cgroup.c b/kernel/cgroup.c index ca83b73..0249f4b 100644 --- a/kernel/cgroup.c +++ b/kernel/cgroup.c @@ -1710,14 +1710,13 @@ static ssize_t cgroup_write_X64(struct cgroup *cgrp, struct cftype *cft, return -EFAULT; buffer[nbytes] = 0; /* nul-terminate */ - strstrip(buffer); if (cft->write_u64) { - u64 val = simple_strtoull(buffer, &end, 0); + u64 val = simple_strtoull(strstrip(buffer), &end, 0); if (*end) return -EINVAL; retval = cft->write_u64(cgrp, cft, val); } else { - s64 val = simple_strtoll(buffer, &end, 0); + s64 val = simple_strtoll(strstrip(buffer), &end, 0); if (*end) return -EINVAL; retval = cft->write_s64(cgrp, cft, val); @@ -1753,8 +1752,7 @@ static ssize_t cgroup_write_string(struct cgroup *cgrp, struct cftype *cft, } buffer[nbytes] = 0; /* nul-terminate */ - strstrip(buffer); - retval = cft->write_string(cgrp, cft, buffer); + retval = cft->write_string(cgrp, cft, strstrip(buffer)); if (!retval) retval = nbytes; out: diff --git a/kernel/exit.c b/kernel/exit.c index e61891f..f7864ac 100644 --- a/kernel/exit.c +++ b/kernel/exit.c @@ -359,10 +359,8 @@ void __set_special_pids(struct pid *pid) { struct task_struct *curr = current->group_leader; - if (task_session(curr) != pid) { + if (task_session(curr) != pid) change_pid(curr, PIDTYPE_SID, pid); - proc_sid_connector(curr); - } if (task_pgrp(curr) != pid) change_pid(curr, PIDTYPE_PGID, pid); diff --git a/kernel/irq/handle.c b/kernel/irq/handle.c index a81cf80..17c71bb 100644 --- a/kernel/irq/handle.c +++ b/kernel/irq/handle.c @@ -11,6 +11,7 @@ */ #include <linux/irq.h> +#include <linux/sched.h> #include <linux/slab.h> #include <linux/module.h> #include <linux/random.h> diff --git a/kernel/mutex-debug.c b/kernel/mutex-debug.c index 50d022e..ec815a9 100644 --- a/kernel/mutex-debug.c +++ b/kernel/mutex-debug.c @@ -16,6 +16,7 @@ #include <linux/delay.h> #include <linux/module.h> #include <linux/poison.h> +#include <linux/sched.h> #include <linux/spinlock.h> #include <linux/kallsyms.h> #include <linux/interrupt.h> diff --git a/kernel/perf_event.c b/kernel/perf_event.c index 9d0b5c6..afb7ef3 100644 --- a/kernel/perf_event.c +++ b/kernel/perf_event.c @@ -1355,7 +1355,7 @@ static void perf_ctx_adjust_freq(struct perf_event_context *ctx) u64 interrupts, freq; spin_lock(&ctx->lock); - list_for_each_entry(event, &ctx->group_list, group_entry) { + list_for_each_entry_rcu(event, &ctx->event_list, event_entry) { if (event->state != PERF_EVENT_STATE_ACTIVE) continue; diff --git a/kernel/power/suspend_test.c b/kernel/power/suspend_test.c index 17d8bb1..25596e4 100644 --- a/kernel/power/suspend_test.c +++ b/kernel/power/suspend_test.c @@ -19,7 +19,7 @@ * The time it takes is system-specific though, so when we test this * during system bootup we allow a LOT of time. */ -#define TEST_SUSPEND_SECONDS 5 +#define TEST_SUSPEND_SECONDS 10 static unsigned long suspend_test_start_time; @@ -49,7 +49,8 @@ void suspend_test_finish(const char *label) * has some performance issues. The stack dump of a WARN_ON * is more likely to get the right attention than a printk... */ - WARN(msec > (TEST_SUSPEND_SECONDS * 1000), "Component: %s\n", label); + WARN(msec > (TEST_SUSPEND_SECONDS * 1000), + "Component: %s, time: %u\n", label, msec); } /* diff --git a/kernel/sched.c b/kernel/sched.c index 76c0e96..e886895 100644 --- a/kernel/sched.c +++ b/kernel/sched.c @@ -676,6 +676,7 @@ inline void update_rq_clock(struct rq *rq) /** * runqueue_is_locked + * @cpu: the processor in question. * * Returns true if the current cpu runqueue is locked. * This interface allows printk to be called with the runqueue lock @@ -2311,7 +2312,7 @@ static int try_to_wake_up(struct task_struct *p, unsigned int state, { int cpu, orig_cpu, this_cpu, success = 0; unsigned long flags; - struct rq *rq; + struct rq *rq, *orig_rq; if (!sched_feat(SYNC_WAKEUPS)) wake_flags &= ~WF_SYNC; @@ -2319,7 +2320,7 @@ static int try_to_wake_up(struct task_struct *p, unsigned int state, this_cpu = get_cpu(); smp_wmb(); - rq = task_rq_lock(p, &flags); + rq = orig_rq = task_rq_lock(p, &flags); update_rq_clock(rq); if (!(p->state & state)) goto out; @@ -2350,6 +2351,10 @@ static int try_to_wake_up(struct task_struct *p, unsigned int state, set_task_cpu(p, cpu); rq = task_rq_lock(p, &flags); + + if (rq != orig_rq) + update_rq_clock(rq); + WARN_ON(p->state != TASK_WAKING); cpu = task_cpu(p); @@ -3656,6 +3661,7 @@ static void update_group_power(struct sched_domain *sd, int cpu) /** * update_sg_lb_stats - Update sched_group's statistics for load balancing. + * @sd: The sched_domain whose statistics are to be updated. * @group: sched_group whose statistics are to be updated. * @this_cpu: Cpu for which load balance is currently performed. * @idle: Idle status of this_cpu @@ -6718,9 +6724,6 @@ EXPORT_SYMBOL(yield); /* * This task is about to go to sleep on IO. Increment rq->nr_iowait so * that process accounting knows that this is a task in IO wait state. - * - * But don't do that if it is a deliberate, throttling IO wait (this task - * has set its backing_dev_info: the queue against which it should throttle) */ void __sched io_schedule(void) { diff --git a/kernel/sched_fair.c b/kernel/sched_fair.c index 4e777b4..c32c3e6 100644 --- a/kernel/sched_fair.c +++ b/kernel/sched_fair.c @@ -861,12 +861,21 @@ wakeup_preempt_entity(struct sched_entity *curr, struct sched_entity *se); static struct sched_entity *pick_next_entity(struct cfs_rq *cfs_rq) { struct sched_entity *se = __pick_next_entity(cfs_rq); + struct sched_entity *buddy; - if (cfs_rq->next && wakeup_preempt_entity(cfs_rq->next, se) < 1) - return cfs_rq->next; + if (cfs_rq->next) { + buddy = cfs_rq->next; + cfs_rq->next = NULL; + if (wakeup_preempt_entity(buddy, se) < 1) + return buddy; + } - if (cfs_rq->last && wakeup_preempt_entity(cfs_rq->last, se) < 1) - return cfs_rq->last; + if (cfs_rq->last) { + buddy = cfs_rq->last; + cfs_rq->last = NULL; + if (wakeup_preempt_entity(buddy, se) < 1) + return buddy; + } return se; } @@ -1654,16 +1663,6 @@ static struct task_struct *pick_next_task_fair(struct rq *rq) do { se = pick_next_entity(cfs_rq); - /* - * If se was a buddy, clear it so that it will have to earn - * the favour again. - * - * If se was not a buddy, clear the buddies because neither - * was elegible to run, let them earn it again. - * - * IOW. unconditionally clear buddies. - */ - __clear_buddies(cfs_rq, NULL); set_next_entity(cfs_rq, se); cfs_rq = group_cfs_rq(se); } while (cfs_rq); diff --git a/kernel/sys.c b/kernel/sys.c index 255475d..1828f8d 100644 --- a/kernel/sys.c +++ b/kernel/sys.c @@ -1110,6 +1110,8 @@ SYSCALL_DEFINE0(setsid) err = session; out: write_unlock_irq(&tasklist_lock); + if (err > 0) + proc_sid_connector(group_leader); return err; } diff --git a/kernel/sysctl_check.c b/kernel/sysctl_check.c index b38423c..b6e7aae 100644 --- a/kernel/sysctl_check.c +++ b/kernel/sysctl_check.c @@ -1521,7 +1521,7 @@ int sysctl_check_table(struct nsproxy *namespaces, struct ctl_table *table) if (!table->ctl_name && table->strategy) set_fail(&fail, table, "Strategy without ctl_name"); #endif -#ifdef CONFIG_PROC_FS +#ifdef CONFIG_PROC_SYSCTL if (table->procname && !table->proc_handler) set_fail(&fail, table, "No proc_handler"); #endif diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c index fb0f46f..c3a4e29 100644 --- a/kernel/time/timekeeping.c +++ b/kernel/time/timekeeping.c @@ -13,6 +13,7 @@ #include <linux/percpu.h> #include <linux/init.h> #include <linux/mm.h> +#include <linux/sched.h> #include <linux/sysdev.h> #include <linux/clocksource.h> #include <linux/jiffies.h> diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index 4506826..c820b03 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -1393,7 +1393,7 @@ int trace_array_vprintk(struct trace_array *tr, int trace_vprintk(unsigned long ip, const char *fmt, va_list args) { - return trace_array_printk(&global_trace, ip, fmt, args); + return trace_array_vprintk(&global_trace, ip, fmt, args); } EXPORT_SYMBOL_GPL(trace_vprintk); diff --git a/kernel/trace/trace_events_filter.c b/kernel/trace/trace_events_filter.c index 2324578..98a6cc5 100644 --- a/kernel/trace/trace_events_filter.c +++ b/kernel/trace/trace_events_filter.c @@ -933,8 +933,9 @@ static void postfix_clear(struct filter_parse_state *ps) while (!list_empty(&ps->postfix)) { elt = list_first_entry(&ps->postfix, struct postfix_elt, list); - kfree(elt->operand); list_del(&elt->list); + kfree(elt->operand); + kfree(elt); } } diff --git a/kernel/workqueue.c b/kernel/workqueue.c index addfe2d..47cdd7e 100644 --- a/kernel/workqueue.c +++ b/kernel/workqueue.c @@ -640,6 +640,24 @@ int schedule_delayed_work(struct delayed_work *dwork, EXPORT_SYMBOL(schedule_delayed_work); /** + * flush_delayed_work - block until a dwork_struct's callback has terminated + * @dwork: the delayed work which is to be flushed + * + * Any timeout is cancelled, and any pending work is run immediately. + */ +void flush_delayed_work(struct delayed_work *dwork) +{ + if (del_timer_sync(&dwork->timer)) { + struct cpu_workqueue_struct *cwq; + cwq = wq_per_cpu(keventd_wq, get_cpu()); + __queue_work(cwq, &dwork->work); + put_cpu(); + } + flush_work(&dwork->work); +} +EXPORT_SYMBOL(flush_delayed_work); + +/** * schedule_delayed_work_on - queue work in global workqueue on CPU after delay * @cpu: cpu to use * @dwork: job to be done |