diff options
Diffstat (limited to 'kernel')
-rw-r--r-- | kernel/irq/internals.h | 6 | ||||
-rw-r--r-- | kernel/irq/irqdesc.c | 11 | ||||
-rw-r--r-- | kernel/irq/manage.c | 2 | ||||
-rw-r--r-- | kernel/irq/resend.c | 2 | ||||
-rw-r--r-- | kernel/power/main.c | 2 | ||||
-rw-r--r-- | kernel/power/process.c | 6 | ||||
-rw-r--r-- | kernel/power/snapshot.c | 7 | ||||
-rw-r--r-- | kernel/workqueue.c | 37 |
8 files changed, 48 insertions, 25 deletions
diff --git a/kernel/irq/internals.h b/kernel/irq/internals.h index 4571ae7e085..99c3bc8a6fb 100644 --- a/kernel/irq/internals.h +++ b/kernel/irq/internals.h @@ -3,6 +3,12 @@ */ #include <linux/irqdesc.h> +#ifdef CONFIG_SPARSE_IRQ +# define IRQ_BITMAP_BITS (NR_IRQS + 8196) +#else +# define IRQ_BITMAP_BITS NR_IRQS +#endif + extern int noirqdebug; #define irq_data_to_desc(data) container_of(data, struct irq_desc, irq_data) diff --git a/kernel/irq/irqdesc.c b/kernel/irq/irqdesc.c index 282f20230e6..2039bea31bd 100644 --- a/kernel/irq/irqdesc.c +++ b/kernel/irq/irqdesc.c @@ -94,7 +94,7 @@ int nr_irqs = NR_IRQS; EXPORT_SYMBOL_GPL(nr_irqs); static DEFINE_MUTEX(sparse_irq_lock); -static DECLARE_BITMAP(allocated_irqs, NR_IRQS); +static DECLARE_BITMAP(allocated_irqs, IRQ_BITMAP_BITS); #ifdef CONFIG_SPARSE_IRQ @@ -217,6 +217,15 @@ int __init early_irq_init(void) initcnt = arch_probe_nr_irqs(); printk(KERN_INFO "NR_IRQS:%d nr_irqs:%d %d\n", NR_IRQS, nr_irqs, initcnt); + if (WARN_ON(nr_irqs > IRQ_BITMAP_BITS)) + nr_irqs = IRQ_BITMAP_BITS; + + if (WARN_ON(initcnt > IRQ_BITMAP_BITS)) + initcnt = IRQ_BITMAP_BITS; + + if (initcnt > nr_irqs) + nr_irqs = initcnt; + for (i = 0; i < initcnt; i++) { desc = alloc_desc(i, node); set_bit(i, allocated_irqs); diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c index 0caa59f747d..9033c1c7082 100644 --- a/kernel/irq/manage.c +++ b/kernel/irq/manage.c @@ -1100,7 +1100,7 @@ int request_threaded_irq(unsigned int irq, irq_handler_t handler, if (retval) kfree(action); -#ifdef CONFIG_DEBUG_SHIRQ +#ifdef CONFIG_DEBUG_SHIRQ_FIXME if (!retval && (irqflags & IRQF_SHARED)) { /* * It's a shared IRQ -- the driver ought to be prepared for it diff --git a/kernel/irq/resend.c b/kernel/irq/resend.c index 891115a929a..dc49358b73f 100644 --- a/kernel/irq/resend.c +++ b/kernel/irq/resend.c @@ -23,7 +23,7 @@ #ifdef CONFIG_HARDIRQS_SW_RESEND /* Bitmap to handle software resend of interrupts: */ -static DECLARE_BITMAP(irqs_resend, NR_IRQS); +static DECLARE_BITMAP(irqs_resend, IRQ_BITMAP_BITS); /* * Run software resends of IRQ's diff --git a/kernel/power/main.c b/kernel/power/main.c index 7b5db6a8561..701853042c2 100644 --- a/kernel/power/main.c +++ b/kernel/power/main.c @@ -326,7 +326,7 @@ EXPORT_SYMBOL_GPL(pm_wq); static int __init pm_start_workqueue(void) { - pm_wq = alloc_workqueue("pm", WQ_FREEZEABLE, 0); + pm_wq = alloc_workqueue("pm", WQ_FREEZABLE, 0); return pm_wq ? 0 : -ENOMEM; } diff --git a/kernel/power/process.c b/kernel/power/process.c index d6d2a10320e..0cf3a27a6c9 100644 --- a/kernel/power/process.c +++ b/kernel/power/process.c @@ -22,7 +22,7 @@ */ #define TIMEOUT (20 * HZ) -static inline int freezeable(struct task_struct * p) +static inline int freezable(struct task_struct * p) { if ((p == current) || (p->flags & PF_NOFREEZE) || @@ -53,7 +53,7 @@ static int try_to_freeze_tasks(bool sig_only) todo = 0; read_lock(&tasklist_lock); do_each_thread(g, p) { - if (frozen(p) || !freezeable(p)) + if (frozen(p) || !freezable(p)) continue; if (!freeze_task(p, sig_only)) @@ -167,7 +167,7 @@ static void thaw_tasks(bool nosig_only) read_lock(&tasklist_lock); do_each_thread(g, p) { - if (!freezeable(p)) + if (!freezable(p)) continue; if (nosig_only && should_send_signal(p)) diff --git a/kernel/power/snapshot.c b/kernel/power/snapshot.c index 0dac75ea445..64db648ff91 100644 --- a/kernel/power/snapshot.c +++ b/kernel/power/snapshot.c @@ -1519,11 +1519,8 @@ static int swsusp_alloc(struct memory_bitmap *orig_bm, struct memory_bitmap *copy_bm, unsigned int nr_pages, unsigned int nr_highmem) { - int error = 0; - if (nr_highmem > 0) { - error = get_highmem_buffer(PG_ANY); - if (error) + if (get_highmem_buffer(PG_ANY)) goto err_out; if (nr_highmem > alloc_highmem) { nr_highmem -= alloc_highmem; @@ -1546,7 +1543,7 @@ swsusp_alloc(struct memory_bitmap *orig_bm, struct memory_bitmap *copy_bm, err_out: swsusp_free(); - return error; + return -ENOMEM; } asmlinkage int swsusp_save(void) diff --git a/kernel/workqueue.c b/kernel/workqueue.c index 11869faa681..ee6578b578a 100644 --- a/kernel/workqueue.c +++ b/kernel/workqueue.c @@ -79,7 +79,9 @@ enum { MAX_IDLE_WORKERS_RATIO = 4, /* 1/4 of busy can be idle */ IDLE_WORKER_TIMEOUT = 300 * HZ, /* keep idle ones for 5 mins */ - MAYDAY_INITIAL_TIMEOUT = HZ / 100, /* call for help after 10ms */ + MAYDAY_INITIAL_TIMEOUT = HZ / 100 >= 2 ? HZ / 100 : 2, + /* call for help after 10ms + (min two ticks) */ MAYDAY_INTERVAL = HZ / 10, /* and then every 100ms */ CREATE_COOLDOWN = HZ, /* time to breath after fail */ TRUSTEE_COOLDOWN = HZ / 10, /* for trustee draining */ @@ -2047,6 +2049,15 @@ repeat: move_linked_works(work, scheduled, &n); process_scheduled_works(rescuer); + + /* + * Leave this gcwq. If keep_working() is %true, notify a + * regular worker; otherwise, we end up with 0 concurrency + * and stalling the execution. + */ + if (keep_working(gcwq)) + wake_up_worker(gcwq); + spin_unlock_irq(&gcwq->lock); } @@ -2956,7 +2967,7 @@ struct workqueue_struct *__alloc_workqueue_key(const char *name, */ spin_lock(&workqueue_lock); - if (workqueue_freezing && wq->flags & WQ_FREEZEABLE) + if (workqueue_freezing && wq->flags & WQ_FREEZABLE) for_each_cwq_cpu(cpu, wq) get_cwq(cpu, wq)->max_active = 0; @@ -3068,7 +3079,7 @@ void workqueue_set_max_active(struct workqueue_struct *wq, int max_active) spin_lock_irq(&gcwq->lock); - if (!(wq->flags & WQ_FREEZEABLE) || + if (!(wq->flags & WQ_FREEZABLE) || !(gcwq->flags & GCWQ_FREEZING)) get_cwq(gcwq->cpu, wq)->max_active = max_active; @@ -3318,7 +3329,7 @@ static int __cpuinit trustee_thread(void *__gcwq) * want to get it over with ASAP - spam rescuers, wake up as * many idlers as necessary and create new ones till the * worklist is empty. Note that if the gcwq is frozen, there - * may be frozen works in freezeable cwqs. Don't declare + * may be frozen works in freezable cwqs. Don't declare * completion while frozen. */ while (gcwq->nr_workers != gcwq->nr_idle || @@ -3576,9 +3587,9 @@ EXPORT_SYMBOL_GPL(work_on_cpu); /** * freeze_workqueues_begin - begin freezing workqueues * - * Start freezing workqueues. After this function returns, all - * freezeable workqueues will queue new works to their frozen_works - * list instead of gcwq->worklist. + * Start freezing workqueues. After this function returns, all freezable + * workqueues will queue new works to their frozen_works list instead of + * gcwq->worklist. * * CONTEXT: * Grabs and releases workqueue_lock and gcwq->lock's. @@ -3604,7 +3615,7 @@ void freeze_workqueues_begin(void) list_for_each_entry(wq, &workqueues, list) { struct cpu_workqueue_struct *cwq = get_cwq(cpu, wq); - if (cwq && wq->flags & WQ_FREEZEABLE) + if (cwq && wq->flags & WQ_FREEZABLE) cwq->max_active = 0; } @@ -3615,7 +3626,7 @@ void freeze_workqueues_begin(void) } /** - * freeze_workqueues_busy - are freezeable workqueues still busy? + * freeze_workqueues_busy - are freezable workqueues still busy? * * Check whether freezing is complete. This function must be called * between freeze_workqueues_begin() and thaw_workqueues(). @@ -3624,8 +3635,8 @@ void freeze_workqueues_begin(void) * Grabs and releases workqueue_lock. * * RETURNS: - * %true if some freezeable workqueues are still busy. %false if - * freezing is complete. + * %true if some freezable workqueues are still busy. %false if freezing + * is complete. */ bool freeze_workqueues_busy(void) { @@ -3645,7 +3656,7 @@ bool freeze_workqueues_busy(void) list_for_each_entry(wq, &workqueues, list) { struct cpu_workqueue_struct *cwq = get_cwq(cpu, wq); - if (!cwq || !(wq->flags & WQ_FREEZEABLE)) + if (!cwq || !(wq->flags & WQ_FREEZABLE)) continue; BUG_ON(cwq->nr_active < 0); @@ -3690,7 +3701,7 @@ void thaw_workqueues(void) list_for_each_entry(wq, &workqueues, list) { struct cpu_workqueue_struct *cwq = get_cwq(cpu, wq); - if (!cwq || !(wq->flags & WQ_FREEZEABLE)) + if (!cwq || !(wq->flags & WQ_FREEZABLE)) continue; /* restore max_active and repopulate worklist */ |