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| author |   Martin Schwidefsky <schwidefsky@de.ibm.com> | 2015-08-21 16:05:32 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2015-10-14 14:32:06 +0200 |
| commit | b5a6b71b1901b9ca495f669c9ad86f2181960aba (patch) | |
| tree | 26279ca6f071672d96ac6713c7ce4997d84482de /arch/s390/include/asm/trace | |
| parent | s390/diag: add a statistic for diagnose calls (diff) | |
| download | linux-dev-b5a6b71b1901b9ca495f669c9ad86f2181960aba.tar.xz linux-dev-b5a6b71b1901b9ca495f669c9ad86f2181960aba.zip | |
s390/diag: add tracepoint for diagnose calls
To be able to analyse problems in regard to hypervisor overhead
add a tracepoing for diagnose calls. It reports the number of
the diagnose issued, e.g.
sshd-1385 [002] .... 42.701431: diagnose: nr=0x9c
<idle>-0 [001] ..s. 43.587528: diagnose: nr=0x9c
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/include/asm/trace')
| -rw-r--r-- | arch/s390/include/asm/trace/diag.h | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/arch/s390/include/asm/trace/diag.h b/arch/s390/include/asm/trace/diag.h new file mode 100644 index 000000000000..776f307960cc --- /dev/null +++ b/arch/s390/include/asm/trace/diag.h @@ -0,0 +1,43 @@ +/* + * Tracepoint header for s390 diagnose calls + * + * Copyright IBM Corp. 2015 + * Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com> + */ + +#undef TRACE_SYSTEM +#define TRACE_SYSTEM s390 + +#if !defined(_TRACE_S390_DIAG_H) || defined(TRACE_HEADER_MULTI_READ) +#define _TRACE_S390_DIAG_H + +#include <linux/tracepoint.h> + +#undef TRACE_INCLUDE_PATH +#undef TRACE_INCLUDE_FILE + +#define TRACE_INCLUDE_PATH asm/trace +#define TRACE_INCLUDE_FILE diag + +TRACE_EVENT(diagnose, + TP_PROTO(unsigned short nr), + TP_ARGS(nr), + TP_STRUCT__entry( + __field(unsigned short, nr) + ), + TP_fast_assign( + __entry->nr = nr; + ), + TP_printk("nr=0x%x", __entry->nr) +); + +#ifdef CONFIG_TRACEPOINTS +void trace_diagnose_norecursion(int diag_nr); +#else +static inline void trace_diagnose_norecursion(int diag_nr) { } +#endif + +#endif /* _TRACE_S390_DIAG_H */ + +/* This part must be outside protection */ +#include <trace/define_trace.h> |