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[PATCH] Kdump: Export crash notes section address through sysfs

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o Following patch exports kexec global variable "crash_notes" to user space
  through sysfs as kernel attribute in /sys/kernel.

Signed-off-by: Maneesh Soni <maneesh@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
2005-06-25 14:58:12 -07:00
committed by Linus Torvalds
parent cf13f0eaff
commit 625f1c8219
5 changed files with 23 additions and 5 deletions
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13
kernel/ksysfs.c
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@@ -30,12 +30,25 @@ static ssize_t hotplug_seqnum_show(struct subsystem *subsys, char *page)
KERNEL_ATTR_RO(hotplug_seqnum);
#endif
#ifdef CONFIG_KEXEC
#include <asm/kexec.h>
static ssize_t crash_notes_show(struct subsystem *subsys, char *page)
{
return sprintf(page, "%p\n", (void *)crash_notes);
}
KERNEL_ATTR_RO(crash_notes);
#endif
decl_subsys(kernel, NULL, NULL);
EXPORT_SYMBOL_GPL(kernel_subsys);
static struct attribute * kernel_attrs[] = {
#ifdef CONFIG_HOTPLUG
&hotplug_seqnum_attr.attr,
#endif
#ifdef CONFIG_KEXEC
&crash_notes_attr.attr,
#endif
NULL
};