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| author | Jeff Moyer <jmoyer@redhat.com> | 2006-06-23 02:05:07 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-06-23 07:43:02 -0700 |
| commit | c330dda908b5a46469a997eea90b66f2f9f02b34 (patch) | |
| tree | aad52aa4e127c366ca185c2122650d7dbb3437a0 /kernel/kexec.c | |
| parent | 24bbb1faf3f0420eb252dd0fdc1e477b1d4d73bd (diff) | |
| download | linux-stable-c330dda908b5a46469a997eea90b66f2f9f02b34.tar.gz linux-stable-c330dda908b5a46469a997eea90b66f2f9f02b34.tar.bz2 linux-stable-c330dda908b5a46469a997eea90b66f2f9f02b34.zip | |
[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.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/kernel/kexec.c b/kernel/kexec.c index bf39d28e4c0e..58f0f382597c 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, |