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| author | Vivek Goyal <vgoyal@in.ibm.com> | 2005-06-25 14:58:12 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-06-25 16:24:51 -0700 |
| commit | 625f1c8219d95300ed32e4c67eb62a50ded095ba (patch) | |
| tree | 2e303a649604cabc922f2ade67435eaf83bbfa98 /kernel/ksysfs.c | |
| parent | cf13f0eaffa31bf6a145c53c589654b11c72ddc7 (diff) | |
| download | lwn-625f1c8219d95300ed32e4c67eb62a50ded095ba.tar.gz lwn-625f1c8219d95300ed32e4c67eb62a50ded095ba.zip | |
[PATCH] Kdump: Export crash notes section address through sysfs
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>
Diffstat (limited to 'kernel/ksysfs.c')
| -rw-r--r-- | kernel/ksysfs.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/kernel/ksysfs.c b/kernel/ksysfs.c index 1f064a63f8cf..015fb69ad94d 100644 --- a/kernel/ksysfs.c +++ b/kernel/ksysfs.c @@ -30,6 +30,16 @@ 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); @@ -37,6 +47,9 @@ static struct attribute * kernel_attrs[] = { #ifdef CONFIG_HOTPLUG &hotplug_seqnum_attr.attr, #endif +#ifdef CONFIG_KEXEC + &crash_notes_attr.attr, +#endif NULL }; |