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[PATCH] kdump: introduce "reset_devices" command line option

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Resetting the devices during driver initialization can be a costly
operation in terms of time (especially scsi devices).  This option can be
used by drivers to know that user forcibly wants the devices to be reset
during initialization.

This option can be useful while kernel is booting in unreliable
environment.  For ex.  during kdump boot where devices are in unknown
random state and BIOS execution has been skipped.

Signed-off-by: Vivek Goyal <vgoyal@in.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Vivek Goyal 2006-09-27 01:50:44 -07:00 • committed by Linus Torvalds
parent bcdc5e019d
commit 7e96287ddc
3 changed files with 24 additions and 0 deletions
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1
include/linux/init.h
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@ -68,6 +68,7 @@ extern initcall_t __security_initcall_start[], __security_initcall_end[];
/* Defined in init/main.c */
extern char saved_command_line[];
extern unsigned int reset_devices;
/* used by init/main.c */
extern void setup_arch(char **);