Messages in this thread Patch in this message | | | From | Christophe Leroy <> | Subject | [PATCH v2 2/2] powerpc/mm: Trace tlbia instruction | Date | Wed, 21 Mar 2018 15:17:00 +0100 (CET) |
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Add a trace point for tlbia (Translation Lookaside Buffer Invalidate All) instruction.
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> --- arch/powerpc/include/asm/trace.h | 15 +++++++++++++++ arch/powerpc/mm/mmu_decl.h | 2 ++ 2 files changed, 17 insertions(+)
diff --git a/arch/powerpc/include/asm/trace.h b/arch/powerpc/include/asm/trace.h index 33f3b479138b..0165a424308d 100644 --- a/arch/powerpc/include/asm/trace.h +++ b/arch/powerpc/include/asm/trace.h @@ -202,6 +202,21 @@ TRACE_EVENT(tlbie, __entry->r) ); +TRACE_EVENT(tlbia, + + TP_PROTO(unsigned long id), + TP_ARGS(id), + TP_STRUCT__entry( + __field(unsigned long, id) + ), + + TP_fast_assign( + __entry->id = id; + ), + + TP_printk("ctx.id=0x%lx", __entry->id) +); + #endif /* _TRACE_POWERPC_H */ #undef TRACE_INCLUDE_PATH diff --git a/arch/powerpc/mm/mmu_decl.h b/arch/powerpc/mm/mmu_decl.h index 107033cc4dcf..8f5483e415dd 100644 --- a/arch/powerpc/mm/mmu_decl.h +++ b/arch/powerpc/mm/mmu_decl.h @@ -32,10 +32,12 @@ static inline void _tlbil_all(void) { asm volatile ("sync; tlbia; isync" : : : "memory"); + trace_tlbia(MMU_NO_CONTEXT); } static inline void _tlbil_pid(unsigned int pid) { asm volatile ("sync; tlbia; isync" : : : "memory"); + trace_tlbia(pid); } #define _tlbil_pid_noind(pid) _tlbil_pid(pid) -- 2.13.3
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