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Commit a9fbf1a5 authored by Michael Holzheu's avatar Michael Holzheu Committed by Martin Schwidefsky
Browse files

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: default avatarMichael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent d7b7cdea

arch/s390/kernel/machine_kexec.c

+7 −1
Original line number Diff line number Diff line
@@ -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 @@ static void crash_map_pages(int enable) 
	       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);

	}

}



/*