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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 /arch/powerpc/mm/tlb_hash64.c | |
| 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 'arch/powerpc/mm/tlb_hash64.c')
| -rw-r--r-- | arch/powerpc/mm/tlb_hash64.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/powerpc/mm/tlb_hash64.c b/arch/powerpc/mm/tlb_hash64.c index 9adda5790463..d2a94b85dbc2 100644 --- a/arch/powerpc/mm/tlb_hash64.c +++ b/arch/powerpc/mm/tlb_hash64.c @@ -30,6 +30,8 @@ #include <asm/tlb.h> #include <asm/bug.h> +#include <trace/events/thp.h> + DEFINE_PER_CPU(struct ppc64_tlb_batch, ppc64_tlb_batch); /* @@ -213,6 +215,8 @@ void __flush_hash_table_range(struct mm_struct *mm, unsigned long start, if (ptep == NULL) continue; pte = pte_val(*ptep); + if (hugepage_shift) + trace_hugepage_invalidate(start, pte_val(pte)); if (!(pte & _PAGE_HASHPTE)) continue; if (unlikely(hugepage_shift && pmd_trans_huge(*(pmd_t *)pte))) |