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ACPI: acpi_os_allocate() fixes 

Replace acpi_in_resume with a more general hack
to check irqs_disabled() on any kmalloc() from ACPI.
While setting (system_state != SYSTEM_RUNNING) on resume
seemed more general, Andrew Morton preferred this approach.

http://bugzilla.kernel.org/show_bug.cgi?id=3469

Make acpi_os_allocate() into an inline function to
allow /proc/slab_allocators to work.

Delete some memset() that could fault on allocation failure.

Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Len Brown 2006-07-10 01:35:51 -04:00
parent b3cf257623
commit e21c1ca3f9
6 changed files with 31 additions and 40 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

30
drivers/acpi/osl.c
View File

@ -136,16 +136,6 @@ void acpi_os_vprintf(const char *fmt, va_list args)
#endif
}
extern int acpi_in_resume;
void *acpi_os_allocate(acpi_size size)
{
if (acpi_in_resume)
return kmalloc(size, GFP_ATOMIC);
else
return kmalloc(size, GFP_KERNEL);
}
acpi_status acpi_os_get_root_pointer(u32 flags, struct acpi_pointer *addr)
{
if (efi_enabled) {
@ -1115,26 +1105,6 @@ acpi_status acpi_os_release_object(acpi_cache_t * cache, void *object)
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_os_acquire_object
*
* PARAMETERS: Cache - Handle to cache object
* ReturnObject - Where the object is returned
*
* RETURN: Status
*
* DESCRIPTION: Return a zero-filled object.
*
******************************************************************************/
void *acpi_os_acquire_object(acpi_cache_t * cache)
{
void *object = kmem_cache_zalloc(cache, GFP_KERNEL);
WARN_ON(!object);
return object;
}
/******************************************************************************
*
* FUNCTION: acpi_os_validate_interface

2
drivers/acpi/parser/psutils.c
View File

@ -139,12 +139,10 @@ union acpi_parse_object *acpi_ps_alloc_op(u16 opcode)
/* The generic op (default) is by far the most common (16 to 1) */
op = acpi_os_acquire_object(acpi_gbl_ps_node_cache);
memset(op, 0, sizeof(struct acpi_parse_obj_common));
} else {
/* Extended parseop */
op = acpi_os_acquire_object(acpi_gbl_ps_node_ext_cache);
memset(op, 0, sizeof(struct acpi_parse_obj_named));
}
/* Initialize the Op */

7
drivers/acpi/pci_link.c
View File

@ -780,11 +780,6 @@ static int acpi_pci_link_resume(struct acpi_pci_link *link)
return 0;
}
/*
* FIXME: this is a workaround to avoid nasty warning. It will be removed
* after every device calls pci_disable_device in .resume.
*/
int acpi_in_resume;
static int irqrouter_resume(struct sys_device *dev)
{
struct list_head *node = NULL;
@ -794,7 +789,6 @@ static int irqrouter_resume(struct sys_device *dev)
/* Make sure SCI is enabled again (Apple firmware bug?) */
acpi_set_register(ACPI_BITREG_SCI_ENABLE, 1, ACPI_MTX_DO_NOT_LOCK);
acpi_in_resume = 1;
list_for_each(node, &acpi_link.entries) {
link = list_entry(node, struct acpi_pci_link, node);
if (!link) {
@ -803,7 +797,6 @@ static int irqrouter_resume(struct sys_device *dev)
}
acpi_pci_link_resume(link);
}
acpi_in_resume = 0;
return 0;
}

2
drivers/acpi/utilities/utalloc.c
View File

@ -285,6 +285,7 @@ acpi_ut_initialize_buffer(struct acpi_buffer * buffer,
return (status);
}
#ifdef NOT_USED_BY_LINUX
/*******************************************************************************
*
* FUNCTION: acpi_ut_allocate
@ -360,3 +361,4 @@ void *acpi_ut_allocate_zeroed(acpi_size size,
return (allocation);
}
#endif

8
include/acpi/acmacros.h
View File

@ -724,9 +724,15 @@
/* Memory allocation */
#ifndef ACPI_ALLOCATE
#define ACPI_ALLOCATE(a) acpi_ut_allocate((acpi_size)(a),_COMPONENT,_acpi_module_name,__LINE__)
#endif
#ifndef ACPI_ALLOCATE_ZEROED
#define ACPI_ALLOCATE_ZEROED(a) acpi_ut_allocate_zeroed((acpi_size)(a), _COMPONENT,_acpi_module_name,__LINE__)
#define ACPI_FREE(a) kfree(a)
#endif
#ifndef ACPI_FREE
#define ACPI_FREE(a) acpio_os_free(a)
#endif
#define ACPI_MEM_TRACKING(a)
#else

22
include/acpi/platform/aclinux.h
View File

@ -104,4 +104,26 @@
static inline acpi_thread_id acpi_os_get_thread_id(void) { return 0; }
/*
* The irqs_disabled() check is for resume from RAM.
* Interrupts are off during resume, just like they are for boot.
* However, boot has (system_state != SYSTEM_RUNNING)
* to quiet __might_sleep() in kmalloc() and resume does not.
*/
#include <acpi/actypes.h>
static inline void *acpi_os_allocate(acpi_size size) {
return kmalloc(size, irqs_disabled() ? GFP_ATOMIC : GFP_KERNEL);
}
static inline void *acpi_os_allocate_zeroed(acpi_size size) {
return kzalloc(size, irqs_disabled() ? GFP_ATOMIC : GFP_KERNEL);
}
static inline void *acpi_os_acquire_object(acpi_cache_t * cache) {
return kmem_cache_zalloc(cache, irqs_disabled() ? GFP_ATOMIC : GFP_KERNEL);
}
#define ACPI_ALLOCATE(a) acpi_os_allocate(a)
#define ACPI_ALLOCATE_ZEROED(a) acpi_os_allocate_zeroed(a)
#define ACPI_FREE(a) kfree(a)
#endif /* __ACLINUX_H__ */