| Message ID | 1449696151-4195-4-git-send-email-yang.shi@linaro.org |
|---|---|
| State | New |
| Headers | show |
Hi folks, Any comment for this one? The tracing part review has been done. Thanks, Yang On 12/9/2015 1:22 PM, Yang Shi wrote: > Cc: Thomas Gleixner <tglx@linutronix.de> > Cc: Ingo Molnar <mingo@redhat.com> > Cc: "H. Peter Anvin" <hpa@zytor.com> > Cc: x86@kernel.org > Signed-off-by: Yang Shi <yang.shi@linaro.org> > --- > arch/x86/mm/gup.c | 6 ++++++ > 1 file changed, 6 insertions(+) > > diff --git a/arch/x86/mm/gup.c b/arch/x86/mm/gup.c > index ae9a37b..df5f3ab 100644 > --- a/arch/x86/mm/gup.c > +++ b/arch/x86/mm/gup.c > @@ -12,6 +12,8 @@ > > #include <asm/pgtable.h> > > +#include <trace/events/gup.h> > + > static inline pte_t gup_get_pte(pte_t *ptep) > { > #ifndef CONFIG_X86_PAE > @@ -270,6 +272,8 @@ int __get_user_pages_fast(unsigned long start, int nr_pages, int write, > (void __user *)start, len))) > return 0; > > + trace_gup_get_user_pages_fast(start, nr_pages); > + > /* > * XXX: batch / limit 'nr', to avoid large irq off latency > * needs some instrumenting to determine the common sizes used by > @@ -373,6 +377,8 @@ int get_user_pages_fast(unsigned long start, int nr_pages, int write, > } while (pgdp++, addr = next, addr != end); > local_irq_enable(); > > + trace_gup_get_user_pages_fast(start, nr_pages); > + > VM_BUG_ON(nr != (end - start) >> PAGE_SHIFT); > return nr; > >
diff --git a/arch/x86/mm/gup.c b/arch/x86/mm/gup.c index ae9a37b..df5f3ab 100644 --- a/arch/x86/mm/gup.c +++ b/arch/x86/mm/gup.c @@ -12,6 +12,8 @@ #include <asm/pgtable.h> +#include <trace/events/gup.h> + static inline pte_t gup_get_pte(pte_t *ptep) { #ifndef CONFIG_X86_PAE @@ -270,6 +272,8 @@ int __get_user_pages_fast(unsigned long start, int nr_pages, int write, (void __user *)start, len))) return 0; + trace_gup_get_user_pages_fast(start, nr_pages); + /* * XXX: batch / limit 'nr', to avoid large irq off latency * needs some instrumenting to determine the common sizes used by @@ -373,6 +377,8 @@ int get_user_pages_fast(unsigned long start, int nr_pages, int write, } while (pgdp++, addr = next, addr != end); local_irq_enable(); + trace_gup_get_user_pages_fast(start, nr_pages); + VM_BUG_ON(nr != (end - start) >> PAGE_SHIFT); return nr;
Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: x86@kernel.org Signed-off-by: Yang Shi <yang.shi@linaro.org> --- arch/x86/mm/gup.c | 6 ++++++ 1 file changed, 6 insertions(+) -- 2.0.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/