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SubjectRe: [PATCH 4/7] mips: mm/gup: add gup trace points
On Tue, Dec 01, 2015 at 03:06:14PM -0800, Yang Shi wrote:

> 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..3c5b8c8 100644
> --- a/arch/mips/mm/gup.c
> +++ b/arch/mips/mm/gup.c
> @@ -12,6 +12,9 @@
> #include <linux/swap.h>
> #include <linux/hugetlb.h>
>
> +#define CREATE_TRACE_POINTS
> +#include <trace/events/gup.h>
> +
> #include <asm/cpu-features.h>
> #include <asm/pgtable.h>
>
> @@ -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, nr_pages, write, pages);
> +
> /*
> * XXX: batch / limit 'nr', to avoid large irq off latency
> * needs some instrumenting to determine the common sizes used by
> @@ -277,6 +282,8 @@ int get_user_pages_fast(unsigned long start, int nr_pages, int write,
> if (end < start || cpu_has_dc_aliases)
> goto slow_irqon;
>
> + trace_gup_get_user_pages_fast(start, nr_pages, write, pages);
> +
> /* XXX: batch / limit 'nr' */
> local_irq_disable();
> pgdp = pgd_offset(mm, addr);

Acked-by: Ralf Baechle <ralf@linux-mips.org>

Please feel free to merge this upstream with the remainder of the
series once it's been acked.

Ralf


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