Messages in this thread Patch in this message | | | From | Yang Shi <> | Subject | [PATCH v3 4/7] mips: mm/gup: add gup trace points | Date | Tue, 8 Dec 2015 11:39:52 -0800 |
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Cc: linux-mips@linux-mips.org Acked-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Yang Shi <yang.shi@linaro.org> --- arch/mips/mm/gup.c | 7 +++++++ 1 file changed, 7 insertions(+)
diff --git a/arch/mips/mm/gup.c b/arch/mips/mm/gup.c index 349995d..2107499 100644 --- a/arch/mips/mm/gup.c +++ b/arch/mips/mm/gup.c @@ -15,6 +15,9 @@ #include <asm/cpu-features.h> #include <asm/pgtable.h> +#define CREATE_TRACE_POINTS +#include <trace/events/gup.h> + static inline pte_t gup_get_pte(pte_t *ptep) { #if defined(CONFIG_PHYS_ADDR_T_64BIT) && defined(CONFIG_CPU_MIPS32) @@ -211,6 +214,8 @@ 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, (unsigned long) nr_pages); + /* * XXX: batch / limit 'nr', to avoid large irq off latency * needs some instrumenting to determine the common sizes used by @@ -291,6 +296,8 @@ 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, (unsigned long) nr_pages); + VM_BUG_ON(nr != (end - start) >> PAGE_SHIFT); return nr; slow: -- 2.0.2
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