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| author | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2015-08-20 17:28:44 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2015-10-14 14:32:06 +0200 |
| commit | 1ec2772e0c3ca3159035c03165355e355efc326b (patch) | |
| tree | 469be3ba9032d367e4a796d6a31b25ccaab0d06a /arch/s390/kernel/ipl.c | |
| parent | acdc9fc9a8121ce2ebcd7533bd72852c20b353f3 (diff) | |
| download | lwn-1ec2772e0c3ca3159035c03165355e355efc326b.tar.gz lwn-1ec2772e0c3ca3159035c03165355e355efc326b.zip | |
s390/diag: add a statistic for diagnose calls
Introduce /sys/debug/kernel/diag_stat with a statistic how many diagnose
calls have been done by each CPU in the system.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/kernel/ipl.c')
| -rw-r--r-- | arch/s390/kernel/ipl.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/arch/s390/kernel/ipl.c b/arch/s390/kernel/ipl.c index 52fbef91d1d9..f6d8acd7e136 100644 --- a/arch/s390/kernel/ipl.c +++ b/arch/s390/kernel/ipl.c @@ -17,6 +17,7 @@ #include <linux/gfp.h> #include <linux/crash_dump.h> #include <linux/debug_locks.h> +#include <asm/diag.h> #include <asm/ipl.h> #include <asm/smp.h> #include <asm/setup.h> @@ -165,7 +166,7 @@ static struct ipl_parameter_block *dump_block_ccw; static struct sclp_ipl_info sclp_ipl_info; -int diag308(unsigned long subcode, void *addr) +static inline int __diag308(unsigned long subcode, void *addr) { register unsigned long _addr asm("0") = (unsigned long) addr; register unsigned long _rc asm("1") = 0; @@ -178,6 +179,12 @@ int diag308(unsigned long subcode, void *addr) : "d" (subcode) : "cc", "memory"); return _rc; } + +int diag308(unsigned long subcode, void *addr) +{ + diag_stat_inc(DIAG_STAT_X308); + return __diag308(subcode, addr); +} EXPORT_SYMBOL_GPL(diag308); /* SYSFS */ |