[PATCH 2/4] Check for crashkernel reservation in PPC64.
Check whether memory for crashkernel is reserved or not by looking for the
existence of /proc/device-tree/chosen/linux,crashkernel-base file. This file
is created only when crashkernel parameter is passed to the kernel.
Signed-off-by: Mohan Kumar M <[EMAIL PROTECTED]>
---
kexec/arch/ppc64/crashdump-ppc64.c | 11 +++++++++++
1 files changed, 11 insertions(+), 0 deletions(-)
diff --git a/kexec/arch/ppc64/crashdump-ppc64.c
b/kexec/arch/ppc64/crashdump-ppc64.c
index cdda575..fa13141 100644
--- a/kexec/arch/ppc64/crashdump-ppc64.c
+++ b/kexec/arch/ppc64/crashdump-ppc64.c
@@ -450,6 +450,17 @@ #ifdef DEBUG
#endif
}
+int is_crashkernel_mem_reserved(void)
+{
+ int fd;
+
+ fd = open("/proc/device-tree/chosen/linux,crashkernel-base", O_RDONLY);
+ if (fd < 0)
+ return 0;
+ close(fd);
+ return 1;
+}
+
#if 0
static int sort_regions(mem_rgns_t *rgn)
{
--
1.4.2
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