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| author | Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> | 2014-08-13 09:02:04 +0200 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2014-08-13 10:20:42 +0200 |
| commit | 9e813308a5c18c58f9ccae1ec72ed4e14eaf9025 (patch) | |
| tree | 3e72135c0e403930b809112552e059deaa7e5c11 /include | |
| parent | powerpc/mm: Use read barrier when creating real_pte (diff) | |
| download | linux-9e813308a5c18c58f9ccae1ec72ed4e14eaf9025.tar.xz linux-9e813308a5c18c58f9ccae1ec72ed4e14eaf9025.zip | |
powerpc/thp: Add tracepoints to track hugepage invalidate
Add tracepoint to track hugepage invalidate. This help us
in debugging difficult to track bugs.
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/trace/events/thp.h | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/include/trace/events/thp.h b/include/trace/events/thp.h new file mode 100644 index 000000000000..b59b065e9e5d --- /dev/null +++ b/include/trace/events/thp.h @@ -0,0 +1,88 @@ +#undef TRACE_SYSTEM +#define TRACE_SYSTEM thp + +#if !defined(_TRACE_THP_H) || defined(TRACE_HEADER_MULTI_READ) +#define _TRACE_THP_H + +#include <linux/types.h> +#include <linux/tracepoint.h> + +TRACE_EVENT(hugepage_invalidate, + + TP_PROTO(unsigned long addr, unsigned long pte), + TP_ARGS(addr, pte), + TP_STRUCT__entry( + __field(unsigned long, addr) + __field(unsigned long, pte) + ), + + TP_fast_assign( + __entry->addr = addr; + __entry->pte = pte; + ), + + TP_printk("hugepage invalidate at addr 0x%lx and pte = 0x%lx", + __entry->addr, __entry->pte) +); + +TRACE_EVENT(hugepage_set_pmd, + + TP_PROTO(unsigned long addr, unsigned long pmd), + TP_ARGS(addr, pmd), + TP_STRUCT__entry( + __field(unsigned long, addr) + __field(unsigned long, pmd) + ), + + TP_fast_assign( + __entry->addr = addr; + __entry->pmd = pmd; + ), + + TP_printk("Set pmd with 0x%lx with 0x%lx", __entry->addr, __entry->pmd) +); + + +TRACE_EVENT(hugepage_update, + + TP_PROTO(unsigned long addr, unsigned long pte, unsigned long clr, unsigned long set), + TP_ARGS(addr, pte, clr, set), + TP_STRUCT__entry( + __field(unsigned long, addr) + __field(unsigned long, pte) + __field(unsigned long, clr) + __field(unsigned long, set) + ), + + TP_fast_assign( + __entry->addr = addr; + __entry->pte = pte; + __entry->clr = clr; + __entry->set = set; + + ), + + TP_printk("hugepage update at addr 0x%lx and pte = 0x%lx clr = 0x%lx, set = 0x%lx", __entry->addr, __entry->pte, __entry->clr, __entry->set) +); +TRACE_EVENT(hugepage_splitting, + + TP_PROTO(unsigned long addr, unsigned long pte), + TP_ARGS(addr, pte), + TP_STRUCT__entry( + __field(unsigned long, addr) + __field(unsigned long, pte) + ), + + TP_fast_assign( + __entry->addr = addr; + __entry->pte = pte; + ), + + TP_printk("hugepage splitting at addr 0x%lx and pte = 0x%lx", + __entry->addr, __entry->pte) +); + +#endif /* _TRACE_THP_H */ + +/* This part must be outside protection */ +#include <trace/define_trace.h> |