[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] Re: [PATCH 07/15] xen/trace: add xen_pgd_(un)pin tracepoints
On Mon, 2011-06-20 at 15:15 -0700, Jeremy Fitzhardinge wrote: > From: Jeremy Fitzhardinge <jeremy.fitzhardinge@xxxxxxxxxx> > > Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@xxxxxxxxxx> > --- > arch/x86/xen/mmu.c | 4 ++++ > include/trace/events/xen.h | 24 ++++++++++++++++++++++++ > 2 files changed, 28 insertions(+), 0 deletions(-) > > diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c > index 84c796f..8aaa398 100644 > --- a/arch/x86/xen/mmu.c > +++ b/arch/x86/xen/mmu.c > @@ -884,6 +884,8 @@ static int xen_pin_page(struct mm_struct *mm, struct page > *page, > read-only, and can be pinned. */ > static void __xen_pgd_pin(struct mm_struct *mm, pgd_t *pgd) > { > + trace_xen_mmu_pgd_pin(mm, pgd); > + > xen_mc_batch(); > > if (__xen_pgd_walk(mm, pgd, xen_pin_page, USER_LIMIT)) { > @@ -1009,6 +1011,8 @@ static int xen_unpin_page(struct mm_struct *mm, struct > page *page, > /* Release a pagetables pages back as normal RW */ > static void __xen_pgd_unpin(struct mm_struct *mm, pgd_t *pgd) > { > + trace_xen_mmu_pgd_unpin(mm, pgd); > + > xen_mc_batch(); > > xen_do_pin(MMUEXT_UNPIN_TABLE, PFN_DOWN(__pa(pgd))); > diff --git a/include/trace/events/xen.h b/include/trace/events/xen.h > index 16edcb7..5811c24 100644 > --- a/include/trace/events/xen.h > +++ b/include/trace/events/xen.h > @@ -381,6 +381,30 @@ TRACE_EVENT(xen_mmu_release_ptpage, > __entry->pinned ? "" : "un") > ); > > +TRACE_EVENT(xen_mmu_pgd_pin, > + TP_PROTO(struct mm_struct *mm, pgd_t *pgd), > + TP_ARGS(mm, pgd), > + TP_STRUCT__entry( > + __field(struct mm_struct *, mm) > + __field(pgd_t *, pgd) > + ), > + TP_fast_assign(__entry->mm = mm; > + __entry->pgd = pgd), > + TP_printk("mm %p pgd %p", __entry->mm, __entry->pgd) > + ); > + > +TRACE_EVENT(xen_mmu_pgd_unpin, > + TP_PROTO(struct mm_struct *mm, pgd_t *pgd), > + TP_ARGS(mm, pgd), > + TP_STRUCT__entry( > + __field(struct mm_struct *, mm) > + __field(pgd_t *, pgd) > + ), > + TP_fast_assign(__entry->mm = mm; > + __entry->pgd = pgd), > + TP_printk("mm %p pgd %p", __entry->mm, __entry->pgd) > + ); > + > #endif /* _TRACE_XEN_H */ Looks like there's lots of candidates for DECLARE_EVENT_CLASS() and DEFINE_EVENT()s. -- Steve > > /* This part must be outside protection */ _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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