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Merge branch 'perf/urgent' into perf/core

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Merge reason: Pick up updates before queueing up dependent patches.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Ingo Molnar
2011-03-04 10:40:22 +01:00
parent cfff2d909c b06b3d4969
commit 888a8a3e9d
202 changed files with 2396 additions and 2539 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
kernel/irq/internals.h
View File

@ -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)

11
kernel/irq/irqdesc.c
View File

@ -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);

2
kernel/irq/manage.c
View File

@ -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

2
kernel/irq/resend.c
View File

@ -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

2
kernel/power/main.c
View File

@ -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;
}

6
kernel/power/process.c
View File

@ -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))

7
kernel/power/snapshot.c
View File

@ -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)

37
kernel/workqueue.c
View File

@ -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 */