s390/kdump: Account /sys/kernel/kexec_crash_size changes in OS info
The crashkernel size for kdump can be reduced at runtime with the
sysfs file "/sys/kernel/kexec_crash_size". Currently those changes
do not update the OS info crashkernel information that is used
for stand-alone kdump. With this fix now also the OS info crashkernel
information is updated correctly.
Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
diff --git a/arch/s390/kernel/machine_kexec.c b/arch/s390/kernel/machine_kexec.c
index bdad47d..03d2027 100644
--- a/arch/s390/kernel/machine_kexec.c
+++ b/arch/s390/kernel/machine_kexec.c
@@ -24,6 +24,7 @@
#include <asm/ipl.h>
#include <asm/diag.h>
#include <asm/asm-offsets.h>
+#include <asm/os_info.h>
typedef void (*relocate_kernel_t)(kimage_entry_t *, unsigned long);
@@ -114,8 +115,13 @@
size % KEXEC_CRASH_MEM_ALIGN);
if (enable)
vmem_add_mapping(crashk_res.start, size);
- else
+ else {
vmem_remove_mapping(crashk_res.start, size);
+ if (size)
+ os_info_crashkernel_add(crashk_res.start, size);
+ else
+ os_info_crashkernel_add(0, 0);
+ }
}
/*