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s390/dump: Remove CONFIG_ZFCPDUMP

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Currently there are two s390 kernel dump config options "CONFIG_ZFCPDUMP"
and "CONFIG_CRASH_DUMP". In order to keep things simple and because the
"CONFIG_ZFCPDUMP" option already has a dependency to "CONFIG_CRASH_DUMP"
remove the CONFIG_ZFCPDUMP option.

Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Reviewed-by: Eric Farman <farman@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Michael Holzheu 2014-04-14 10:38:05 +02:00 committed by Martin Schwidefsky
parent 71c40f7f8f
commit bf28a5970d
5 changed files with 11 additions and 20 deletions
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4
Documentation/s390/zfcpdump.txt
View File

@ -21,7 +21,7 @@ standalone dump format. It can be used in the same way as e.g. /dev/mem. The
dump format defines a 4K header followed by plain uncompressed memory. The
register sets are stored in the prefix pages of the respective cpus. To build a
dump enabled kernel with the zcore driver, the kernel config option
CONFIG_ZFCPDUMP has to be set. When reading from "zcore/mem", the part of
CONFIG_CRASH_DUMP has to be set. When reading from "zcore/mem", the part of
memory, which has been saved by hardware is read by the driver via the SCLP
hardware interface. The second part is just copied from the non overwritten real
memory.
@ -32,7 +32,7 @@ SCSI disk.
To build a zfcpdump kernel use the following settings in your kernel
configuration:
* CONFIG_ZFCPDUMP=y
* CONFIG_CRASH_DUMP=y
* Enable ZFCP driver
* Enable SCSI driver
* Enable ext2 and ext3 filesystems

11
arch/s390/Kconfig
View File

@ -593,21 +593,14 @@ config CRASH_DUMP
bool "kernel crash dumps"
depends on 64BIT && SMP
select KEXEC
select ZFCPDUMP
help
Generate crash dump after being started by kexec.
Crash dump kernels are loaded in the main kernel with kexec-tools
into a specially reserved region and then later executed after
a crash by kdump/kexec.
For more details see Documentation/kdump/kdump.txt
config ZFCPDUMP
def_bool n
prompt "zfcpdump support"
depends on 64BIT && SMP
help
Select this option if you want to build an zfcpdump enabled kernel.
Refer to <file:Documentation/s390/zfcpdump.txt> for more details on this.
This option also enables s390 zfcpdump.
See also <file:Documentation/s390/zfcpdump.txt>
endmenu

6
arch/s390/kernel/setup.c
View File

@ -211,7 +211,7 @@ static void __init conmode_default(void)
}
}
#ifdef CONFIG_ZFCPDUMP
#ifdef CONFIG_CRASH_DUMP
static void __init setup_zfcpdump(void)
{
if (ipl_info.type != IPL_TYPE_FCP_DUMP)
@ -223,7 +223,7 @@ static void __init setup_zfcpdump(void)
}
#else
static inline void setup_zfcpdump(void) {}
#endif /* CONFIG_ZFCPDUMP */
#endif /* CONFIG_CRASH_DUMP */
/*
* Reboot, halt and power_off stubs. They just call _machine_restart,
@ -521,7 +521,7 @@ static struct notifier_block kdump_mem_nb = {
*/
static void reserve_memory_end(void)
{
#ifdef CONFIG_ZFCPDUMP
#ifdef CONFIG_CRASH_DUMP
if (ipl_info.type == IPL_TYPE_FCP_DUMP &&
!OLDMEM_BASE && sclp_get_hsa_size()) {
memory_end = sclp_get_hsa_size();

8
arch/s390/kernel/smp.c
View File

@ -521,7 +521,7 @@ void smp_ctl_clear_bit(int cr, int bit)
}
EXPORT_SYMBOL(smp_ctl_clear_bit);
#if defined(CONFIG_ZFCPDUMP) || defined(CONFIG_CRASH_DUMP)
#ifdef CONFIG_CRASH_DUMP
static void __init smp_get_save_area(int cpu, u16 address)
{
@ -536,14 +536,12 @@ static void __init smp_get_save_area(int cpu, u16 address)
save_area = dump_save_area_create(cpu);
if (!save_area)
panic("could not allocate memory for save area\n");
#ifdef CONFIG_CRASH_DUMP
if (address == boot_cpu_address) {
/* Copy the registers of the boot cpu. */
copy_oldmem_page(1, (void *) save_area, sizeof(*save_area),
SAVE_AREA_BASE - PAGE_SIZE, 0);
return;
}
#endif
/* Get the registers of a non-boot cpu. */
__pcpu_sigp_relax(address, SIGP_STOP_AND_STORE_STATUS, 0, NULL);
memcpy_real(save_area, lc + SAVE_AREA_BASE, sizeof(*save_area));
@ -560,11 +558,11 @@ int smp_store_status(int cpu)
return 0;
}
#else /* CONFIG_ZFCPDUMP || CONFIG_CRASH_DUMP */
#else /* CONFIG_CRASH_DUMP */
static inline void smp_get_save_area(int cpu, u16 address) { }
#endif /* CONFIG_ZFCPDUMP || CONFIG_CRASH_DUMP */
#endif /* CONFIG_CRASH_DUMP */
void smp_cpu_set_polarization(int cpu, int val)
{

2
drivers/s390/char/Makefile
View File

@ -33,4 +33,4 @@ obj-$(CONFIG_MONWRITER) += monwriter.o
obj-$(CONFIG_S390_VMUR) += vmur.o
zcore_mod-objs := sclp_sdias.o zcore.o
obj-$(CONFIG_ZFCPDUMP) += zcore_mod.o
obj-$(CONFIG_CRASH_DUMP) += zcore_mod.o