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Merge branch 'for-3.10-async' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq

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Pull async update from Tejun Heo:
 "This contains three cleanup patches for async from Lai.  All three
  patches are essentially cosmetic."

* 'for-3.10-async' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq:
  async: rename and redefine async_func_ptr
  async: remove unused @node from struct async_domain
  async: simplify lowest_in_progress()
This commit is contained in:
Linus Torvalds 2013-04-29 19:06:59 -07:00
commit ce8aa48929
3 changed files with 24 additions and 31 deletions
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2
arch/sh/drivers/pci/pcie-sh7786.c
View File

@ -35,7 +35,7 @@ static unsigned int nr_ports;
static struct sh7786_pcie_hwops {
int (*core_init)(void);
async_func_ptr *port_init_hw;
async_func_t port_init_hw;
} *sh7786_pcie_hwops;
static struct resource sh7786_pci0_resources[] = {

13
include/linux/async.h
View File

@ -16,9 +16,8 @@
#include <linux/list.h>
typedef u64 async_cookie_t;
typedef void (async_func_ptr) (void *data, async_cookie_t cookie);
typedef void (*async_func_t) (void *data, async_cookie_t cookie);
struct async_domain {
struct list_head node;
struct list_head pending;
unsigned registered:1;
};
@ -27,8 +26,7 @@ struct async_domain {
* domain participates in global async_synchronize_full
*/
#define ASYNC_DOMAIN(_name) \
struct async_domain _name = { .node = LIST_HEAD_INIT(_name.node), \
.pending = LIST_HEAD_INIT(_name.pending), \
struct async_domain _name = { .pending = LIST_HEAD_INIT(_name.pending), \
.registered = 1 }
/*
@ -36,12 +34,11 @@ struct async_domain {
* complete, this domain does not participate in async_synchronize_full
*/
#define ASYNC_DOMAIN_EXCLUSIVE(_name) \
struct async_domain _name = { .node = LIST_HEAD_INIT(_name.node), \
.pending = LIST_HEAD_INIT(_name.pending), \
struct async_domain _name = { .pending = LIST_HEAD_INIT(_name.pending), \
.registered = 0 }
extern async_cookie_t async_schedule(async_func_ptr *ptr, void *data);
extern async_cookie_t async_schedule_domain(async_func_ptr *ptr, void *data,
extern async_cookie_t async_schedule(async_func_t func, void *data);
extern async_cookie_t async_schedule_domain(async_func_t func, void *data,
struct async_domain *domain);
void async_unregister_domain(struct async_domain *domain);
extern void async_synchronize_full(void);

40
kernel/async.c
View File

@ -73,7 +73,7 @@ struct async_entry {
struct list_head global_list;
struct work_struct work;
async_cookie_t cookie;
async_func_ptr *func;
async_func_t func;
void *data;
struct async_domain *domain;
};
@ -84,24 +84,20 @@ static atomic_t entry_count;
static async_cookie_t lowest_in_progress(struct async_domain *domain)
{
struct async_entry *first = NULL;
struct list_head *pending;
async_cookie_t ret = ASYNC_COOKIE_MAX;
unsigned long flags;
spin_lock_irqsave(&async_lock, flags);
if (domain) {
if (!list_empty(&domain->pending))
first = list_first_entry(&domain->pending,
struct async_entry, domain_list);
} else {
if (!list_empty(&async_global_pending))
first = list_first_entry(&async_global_pending,
struct async_entry, global_list);
}
if (domain)
pending = &domain->pending;
else
pending = &async_global_pending;
if (first)
ret = first->cookie;
if (!list_empty(pending))
ret = list_first_entry(pending, struct async_entry,
domain_list)->cookie;
spin_unlock_irqrestore(&async_lock, flags);
return ret;
@ -149,7 +145,7 @@ static void async_run_entry_fn(struct work_struct *work)
wake_up(&async_done);
}
static async_cookie_t __async_schedule(async_func_ptr *ptr, void *data, struct async_domain *domain)
static async_cookie_t __async_schedule(async_func_t func, void *data, struct async_domain *domain)
{
struct async_entry *entry;
unsigned long flags;
@ -169,13 +165,13 @@ static async_cookie_t __async_schedule(async_func_ptr *ptr, void *data, struct a
spin_unlock_irqrestore(&async_lock, flags);
/* low on memory.. run synchronously */
ptr(data, newcookie);
func(data, newcookie);
return newcookie;
}
INIT_LIST_HEAD(&entry->domain_list);
INIT_LIST_HEAD(&entry->global_list);
INIT_WORK(&entry->work, async_run_entry_fn);
entry->func = ptr;
entry->func = func;
entry->data = data;
entry->domain = domain;
@ -202,21 +198,21 @@ static async_cookie_t __async_schedule(async_func_ptr *ptr, void *data, struct a
/**
* async_schedule - schedule a function for asynchronous execution
* @ptr: function to execute asynchronously
* @func: function to execute asynchronously
* @data: data pointer to pass to the function
*
* Returns an async_cookie_t that may be used for checkpointing later.
* Note: This function may be called from atomic or non-atomic contexts.
*/
async_cookie_t async_schedule(async_func_ptr *ptr, void *data)
async_cookie_t async_schedule(async_func_t func, void *data)
{
return __async_schedule(ptr, data, &async_dfl_domain);
return __async_schedule(func, data, &async_dfl_domain);
}
EXPORT_SYMBOL_GPL(async_schedule);
/**
* async_schedule_domain - schedule a function for asynchronous execution within a certain domain
* @ptr: function to execute asynchronously
* @func: function to execute asynchronously
* @data: data pointer to pass to the function
* @domain: the domain
*
@ -226,10 +222,10 @@ EXPORT_SYMBOL_GPL(async_schedule);
* synchronization domain is specified via @domain. Note: This function
* may be called from atomic or non-atomic contexts.
*/
async_cookie_t async_schedule_domain(async_func_ptr *ptr, void *data,
async_cookie_t async_schedule_domain(async_func_t func, void *data,
struct async_domain *domain)
{
return __async_schedule(ptr, data, domain);
return __async_schedule(func, data, domain);
}
EXPORT_SYMBOL_GPL(async_schedule_domain);