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https://github.com/edk2-porting/linux-next.git
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7ae9392c0a
Turn CONFIG_DMI into a selectable option if EMBEDDED is defined, in order to be able to remove the DMI table scanning code if it's not needed, and then reduce the kernel code size. With CONFIG_DMI (i.e before) : text data bss dec hex filename 1076076 128656 98304 1303036 13e1fc vmlinux Without CONFIG_DMI (i.e after) : text data bss dec hex filename 1068092 126308 98304 1292704 13b9a0 vmlinux Result: text data bss dec hex filename -7984 -2348 0 -10332 -285c vmlinux The new option appears in "Processor type and features", only when CONFIG_EMBEDDED is defined. This patch is part of the Linux Tiny project, and is based on previous work done by Matt Mackall <mpm@selenic.com>. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Acked-by: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Anvin" <hpa@zytor.com> Signed-off-by: Matt Mackall <mpm@selenic.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
103 lines
2.3 KiB
C
103 lines
2.3 KiB
C
#ifndef __DMI_H__
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#define __DMI_H__
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#include <linux/list.h>
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enum dmi_field {
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DMI_NONE,
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DMI_BIOS_VENDOR,
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DMI_BIOS_VERSION,
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DMI_BIOS_DATE,
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DMI_SYS_VENDOR,
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DMI_PRODUCT_NAME,
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DMI_PRODUCT_VERSION,
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DMI_PRODUCT_SERIAL,
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DMI_PRODUCT_UUID,
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DMI_BOARD_VENDOR,
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DMI_BOARD_NAME,
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DMI_BOARD_VERSION,
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DMI_BOARD_SERIAL,
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DMI_BOARD_ASSET_TAG,
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DMI_CHASSIS_VENDOR,
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DMI_CHASSIS_TYPE,
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DMI_CHASSIS_VERSION,
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DMI_CHASSIS_SERIAL,
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DMI_CHASSIS_ASSET_TAG,
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DMI_STRING_MAX,
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};
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enum dmi_device_type {
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DMI_DEV_TYPE_ANY = 0,
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DMI_DEV_TYPE_OTHER,
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DMI_DEV_TYPE_UNKNOWN,
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DMI_DEV_TYPE_VIDEO,
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DMI_DEV_TYPE_SCSI,
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DMI_DEV_TYPE_ETHERNET,
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DMI_DEV_TYPE_TOKENRING,
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DMI_DEV_TYPE_SOUND,
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DMI_DEV_TYPE_PATA,
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DMI_DEV_TYPE_SATA,
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DMI_DEV_TYPE_SAS,
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DMI_DEV_TYPE_IPMI = -1,
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DMI_DEV_TYPE_OEM_STRING = -2,
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};
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struct dmi_header {
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u8 type;
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u8 length;
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u16 handle;
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};
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/*
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* DMI callbacks for problem boards
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*/
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struct dmi_strmatch {
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u8 slot;
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char *substr;
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};
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struct dmi_system_id {
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int (*callback)(const struct dmi_system_id *);
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const char *ident;
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struct dmi_strmatch matches[4];
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void *driver_data;
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};
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#define DMI_MATCH(a, b) { a, b }
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struct dmi_device {
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struct list_head list;
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int type;
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const char *name;
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void *device_data; /* Type specific data */
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};
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#ifdef CONFIG_DMI
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extern int dmi_check_system(const struct dmi_system_id *list);
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extern const char * dmi_get_system_info(int field);
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extern const struct dmi_device * dmi_find_device(int type, const char *name,
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const struct dmi_device *from);
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extern void dmi_scan_machine(void);
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extern int dmi_get_year(int field);
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extern int dmi_name_in_vendors(const char *str);
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extern int dmi_available;
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extern int dmi_walk(void (*decode)(const struct dmi_header *));
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#else
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static inline int dmi_check_system(const struct dmi_system_id *list) { return 0; }
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static inline const char * dmi_get_system_info(int field) { return NULL; }
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static inline const struct dmi_device * dmi_find_device(int type, const char *name,
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const struct dmi_device *from) { return NULL; }
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static inline void dmi_scan_machine(void) { return; }
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static inline int dmi_get_year(int year) { return 0; }
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static inline int dmi_name_in_vendors(const char *s) { return 0; }
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#define dmi_available 0
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static inline int dmi_walk(void (*decode)(const struct dmi_header *))
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{ return -1; }
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#endif
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#endif /* __DMI_H__ */
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