From: Len Brown Date: Mon, 10 Jul 2006 05:35:51 +0000 (-0400) Subject: ACPI: acpi_os_allocate() fixes X-Git-Tag: v2.6.18-rc2~116^2~1^2 X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e21c1ca3f98529921c829a792dfdbfc5a5dc393b;p=linux-2.6 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 --- diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c index eedb05c6dc..47dfde95b8 100644 --- a/drivers/acpi/osl.c +++ b/drivers/acpi/osl.c @@ -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 diff --git a/drivers/acpi/parser/psutils.c b/drivers/acpi/parser/psutils.c index 182474ae8c..d405387b74 100644 --- a/drivers/acpi/parser/psutils.c +++ b/drivers/acpi/parser/psutils.c @@ -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 */ diff --git a/drivers/acpi/pci_link.c b/drivers/acpi/pci_link.c index 8197c0e407..7f3e7e77e7 100644 --- a/drivers/acpi/pci_link.c +++ b/drivers/acpi/pci_link.c @@ -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; } diff --git a/drivers/acpi/utilities/utalloc.c b/drivers/acpi/utilities/utalloc.c index 5cff17dc78..f6cbc0b1bf 100644 --- a/drivers/acpi/utilities/utalloc.c +++ b/drivers/acpi/utilities/utalloc.c @@ -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 diff --git a/include/acpi/acmacros.h b/include/acpi/acmacros.h index f1ac610955..192fa095a5 100644 --- a/include/acpi/acmacros.h +++ b/include/acpi/acmacros.h @@ -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 diff --git a/include/acpi/platform/aclinux.h b/include/acpi/platform/aclinux.h index 3f853cabbd..f0118262ac 100644 --- a/include/acpi/platform/aclinux.h +++ b/include/acpi/platform/aclinux.h @@ -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 +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__ */