diff options
| -rw-r--r-- | arch/powerpc/mm/pgtable_64.c | 6 | ||||
| -rw-r--r-- | arch/powerpc/mm/tlb_hash64.c | 4 | ||||
| -rw-r--r-- | include/trace/events/thp.h | 88 |
3 files changed, 98 insertions, 0 deletions
diff --git a/arch/powerpc/mm/pgtable_64.c b/arch/powerpc/mm/pgtable_64.c index 948a81e02ddb..c8d709ab489d 100644 --- a/arch/powerpc/mm/pgtable_64.c +++ b/arch/powerpc/mm/pgtable_64.c @@ -54,6 +54,9 @@ #include "mmu_decl.h" +#define CREATE_TRACE_POINTS +#include <trace/events/thp.h> + /* Some sanity checking */ #if TASK_SIZE_USER64 > PGTABLE_RANGE #error TASK_SIZE_USER64 exceeds pagetable range @@ -537,6 +540,7 @@ unsigned long pmd_hugepage_update(struct mm_struct *mm, unsigned long addr, old = pmd_val(*pmdp); *pmdp = __pmd((old & ~clr) | set); #endif + trace_hugepage_update(addr, old, clr, set); if (old & _PAGE_HASHPTE) hpte_do_hugepage_flush(mm, addr, pmdp, old); return old; @@ -642,6 +646,7 @@ void pmdp_splitting_flush(struct vm_area_struct *vma, * If we didn't had the splitting flag set, go and flush the * HPTE entries. */ + trace_hugepage_splitting(address, old); if (!(old & _PAGE_SPLITTING)) { /* We need to flush the hpte */ if (old & _PAGE_HASHPTE) @@ -709,6 +714,7 @@ void set_pmd_at(struct mm_struct *mm, unsigned long addr, assert_spin_locked(&mm->page_table_lock); WARN_ON(!pmd_trans_huge(pmd)); #endif + trace_hugepage_set_pmd(addr, pmd); return set_pte_at(mm, addr, pmdp_ptep(pmdp), pmd_pte(pmd)); } 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))) 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> |