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| author | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2015-10-29 10:28:26 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2015-11-27 09:24:14 +0100 |
| commit | 1a36a39e225d3558fb3776a3d3d7736cf1ec9f60 (patch) | |
| tree | 63a1c8892ff95dac939beb6e7a13456fcec20cb7 /arch/s390/include/asm/reset.h | |
| parent | s390/dump: remove SAVE_AREA_BASE (diff) | |
| download | linux-1a36a39e225d3558fb3776a3d3d7736cf1ec9f60.tar.gz linux-1a36a39e225d3558fb3776a3d3d7736cf1ec9f60.zip | |
s390/dump: rework CPU register dump code
To collect the CPU registers of the crashed system allocated a single
page with memblock_alloc_base and use it as a copy buffer. Replace the
stop-and-store-status sigp with a store-status-at-address sigp in
smp_save_dump_cpus() and smp_store_status(). In both cases the target
CPU is already stopped and store-status-at-address avoids the detour
via the absolute zero page.
For kexec simplify s390_reset_system and call store_status() before
the prefix register of the boot CPU has been set to zero. Use STPX
to store the prefix register and remove dump_prefix_page.
Acked-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/include/asm/reset.h')
| -rw-r--r-- | arch/s390/include/asm/reset.h | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/arch/s390/include/asm/reset.h b/arch/s390/include/asm/reset.h index 72786067b300..fe11fa88a0e0 100644 --- a/arch/s390/include/asm/reset.h +++ b/arch/s390/include/asm/reset.h @@ -15,6 +15,5 @@ struct reset_call { extern void register_reset_call(struct reset_call *reset); extern void unregister_reset_call(struct reset_call *reset); -extern void s390_reset_system(void (*fn_pre)(void), - void (*fn_post)(void *), void *data); +extern void s390_reset_system(void); #endif /* _ASM_S390_RESET_H */ |