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authorMichael Holzheu <holzheu@de.ibm.com>2007-04-27 16:01:49 +0200
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2007-04-27 16:01:44 +0200
commit411ed3225733dbd83b4cbaaa992ef80d6ec1534e (patch)
tree388aeac39e9fad5f7cadcc8fcbf0838811f5829d /include/asm-s390/smp.h
parent7039d3a11c4b4b59f9ef933b4b0a28304bdd07d1 (diff)
[S390] zfcpdump support.
s390 machines provide hardware support for creating Linux dumps on SCSI disks. For creating a dump a special purpose dump Linux is used. The first 32 MB of memory are saved by the hardware before the dump Linux is booted. Via an SCLP interface, the saved memory can be accessed from Linux. This patch exports memory and registers of the crashed Linux to userspace via a debugfs file. For more information refer to Documentation/s390/zfcpdump.txt, which is included in this patch. Signed-off-by: Michael Holzheu <holzheu@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Diffstat (limited to 'include/asm-s390/smp.h')
-rw-r--r--include/asm-s390/smp.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/asm-s390/smp.h b/include/asm-s390/smp.h
index b957e4cda464..676e94ee15f0 100644
--- a/include/asm-s390/smp.h
+++ b/include/asm-s390/smp.h
@@ -119,4 +119,5 @@ static inline void smp_send_stop(void)
#define smp_setup_cpu_possible_map() do { } while (0)
#endif
+extern union save_area *zfcpdump_save_areas[NR_CPUS + 1];
#endif