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authorJeff Moyer <jmoyer@redhat.com>2006-06-23 02:05:07 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-06-23 07:43:02 -0700
commitc330dda908b5a46469a997eea90b66f2f9f02b34 (patch)
treeaad52aa4e127c366ca185c2122650d7dbb3437a0 /kernel/kexec.c
parent24bbb1faf3f0420eb252dd0fdc1e477b1d4d73bd (diff)
downloadlinux-2.6.34-ux500-c330dda908b5a46469a997eea90b66f2f9f02b34.tar.gz
[PATCH] Add a sysfs file to determine if a kexec kernel is loaded
Create two files in /sys/kernel, kexec_loaded and kexec_crash_loaded. Each file contains a simple boolean value indicating whether the relevant kernel has been loaded into memory. The motivation for this is geared around support. Signed-off-by: Jeff Moyer <jmoyer@redhat.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'kernel/kexec.c')
-rw-r--r--kernel/kexec.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/kernel/kexec.c b/kernel/kexec.c
index bf39d28e4c0..58f0f382597 100644
--- a/kernel/kexec.c
+++ b/kernel/kexec.c
@@ -902,14 +902,14 @@ static int kimage_load_segment(struct kimage *image,
* kexec does not sync, or unmount filesystems so if you need
* that to happen you need to do that yourself.
*/
-struct kimage *kexec_image = NULL;
-static struct kimage *kexec_crash_image = NULL;
+struct kimage *kexec_image;
+struct kimage *kexec_crash_image;
/*
* A home grown binary mutex.
* Nothing can wait so this mutex is safe to use
* in interrupt context :)
*/
-static int kexec_lock = 0;
+static int kexec_lock;
asmlinkage long sys_kexec_load(unsigned long entry, unsigned long nr_segments,
struct kexec_segment __user *segments,