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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/mm/fault.c | |
| parent | s390/bitops: implement cache friendly test_and_set_bit_lock (diff) | |
| download | linux-dev-1ec2772e0c3ca3159035c03165355e355efc326b.tar.xz linux-dev-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/mm/fault.c')
| -rw-r--r-- | arch/s390/mm/fault.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/s390/mm/fault.c b/arch/s390/mm/fault.c index f985856a538b..77b3938d6bfa 100644 --- a/arch/s390/mm/fault.c +++ b/arch/s390/mm/fault.c @@ -30,6 +30,7 @@ #include <linux/uaccess.h> #include <linux/hugetlb.h> #include <asm/asm-offsets.h> +#include <asm/diag.h> #include <asm/pgtable.h> #include <asm/irq.h> #include <asm/mmu_context.h> @@ -597,6 +598,7 @@ int pfault_init(void) if (pfault_disable) return -1; + diag_stat_inc(DIAG_STAT_X258); asm volatile( " diag %1,%0,0x258\n" "0: j 2f\n" @@ -618,6 +620,7 @@ void pfault_fini(void) if (pfault_disable) return; + diag_stat_inc(DIAG_STAT_X258); asm volatile( " diag %0,0,0x258\n" "0:\n" |