diff options
| author | Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> | 2010-12-17 14:21:17 -0800 |
|---|---|---|
| committer | Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> | 2011-07-18 15:43:27 -0700 |
| commit | c2ba050d2e5638774571ea0ad0375a1c17c7b04e (patch) | |
| tree | 3b90b1ee94de25e9d8a4ad2dab5fd7ca39db66ad | |
| parent | 847088079162a5cf8ab0d1ad1ecf7fa60c057246 (diff) | |
xen/trace: add ptpage alloc/release tracepoints
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
| -rw-r--r-- | arch/x86/xen/mmu.c | 10 | ||||
| -rw-r--r-- | include/trace/events/xen.h | 33 |
2 files changed, 41 insertions, 2 deletions
diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c index 43fa7771ccb9..f2160997287e 100644 --- a/arch/x86/xen/mmu.c +++ b/arch/x86/xen/mmu.c @@ -1478,8 +1478,11 @@ static void __init xen_release_pmd_init(unsigned long pfn) static void xen_alloc_ptpage(struct mm_struct *mm, unsigned long pfn, unsigned level) { struct page *page = pfn_to_page(pfn); + int pinned = PagePinned(virt_to_page(mm->pgd)); + + trace_xen_mmu_alloc_ptpage(mm, pfn, level, pinned); - if (PagePinned(virt_to_page(mm->pgd))) { + if (pinned) { SetPagePinned(page); if (!PageHighMem(page)) { @@ -1508,8 +1511,11 @@ static void xen_alloc_pmd(struct mm_struct *mm, unsigned long pfn) static void xen_release_ptpage(unsigned long pfn, unsigned level) { struct page *page = pfn_to_page(pfn); + bool pinned = PagePinned(page); - if (PagePinned(page)) { + trace_xen_mmu_release_ptpage(pfn, level, pinned); + + if (pinned) { if (!PageHighMem(page)) { if (level == PT_PTE && USE_SPLIT_PTLOCKS) pin_pagetable_pfn(MMUEXT_UNPIN_TABLE, pfn); diff --git a/include/trace/events/xen.h b/include/trace/events/xen.h index 08089e82f77e..f46fdb4afb89 100644 --- a/include/trace/events/xen.h +++ b/include/trace/events/xen.h @@ -347,6 +347,39 @@ TRACE_EVENT(xen_mmu_ptep_modify_prot_commit, (int)sizeof(pteval_t) * 2, (unsigned long long)__entry->pteval) ); +TRACE_EVENT(xen_mmu_alloc_ptpage, + TP_PROTO(struct mm_struct *mm, unsigned long pfn, unsigned level, bool pinned), + TP_ARGS(mm, pfn, level, pinned), + TP_STRUCT__entry( + __field(struct mm_struct *, mm) + __field(unsigned long, pfn) + __field(unsigned, level) + __field(bool, pinned) + ), + TP_fast_assign(__entry->mm = mm; + __entry->pfn = pfn; + __entry->level = level; + __entry->pinned = pinned), + TP_printk("mm %p pfn %lx level %d %spinned", + __entry->mm, __entry->pfn, __entry->level, + __entry->pinned ? "" : "un") + ); + +TRACE_EVENT(xen_mmu_release_ptpage, + TP_PROTO(unsigned long pfn, unsigned level, bool pinned), + TP_ARGS(pfn, level, pinned), + TP_STRUCT__entry( + __field(unsigned long, pfn) + __field(unsigned, level) + __field(bool, pinned) + ), + TP_fast_assign(__entry->pfn = pfn; + __entry->level = level; + __entry->pinned = pinned), + TP_printk("pfn %lx level %d %spinned", + __entry->pfn, __entry->level, + __entry->pinned ? "" : "un") + ); #endif /* _TRACE_XEN_H */ |