On Tue, Apr 18, 2023 at 11:33:09AM +0800, zhaoyang.huang wrote:
> cma and page pointer printed via %p are hash value which make debug to be hard.
> change them to %px.
Why does printing the page pointer make any sense at all? Surely the
PFN makes much more sense.
> [63321.482751] [c7] cma: cma_alloc(): memory range at 000000000b5e462c is busy, retrying
> [63321.482786] [c7] cma: cma_alloc(): memory range at 000000000f7d6fae is busy, retrying
> [63321.482823] [c7] cma: cma_alloc(): memory range at 00000000e653b59b is busy, retrying
> [63322.378890] [c7] cma: cma_release(page 00000000dd53cf48)
> [63322.378913] [c7] cma: cma_release(page 00000000315f703d)
> [63322.378925] [c7] cma: cma_release(page 00000000791e3a5f)
>
> Signed-off-by: Zhaoyang Huang <zhaoyang.huang@xxxxxxxxxx>
> ---
> mm/cma.c | 6 +++---
> 1 file changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/mm/cma.c b/mm/cma.c
> index 4a978e0..dfe9813 100644
> --- a/mm/cma.c
> +++ b/mm/cma.c
> @@ -435,7 +435,7 @@ struct page *cma_alloc(struct cma *cma, unsigned long count,
> if (!cma || !cma->count || !cma->bitmap)
> goto out;
>
> - pr_debug("%s(cma %p, count %lu, align %d)\n", __func__, (void *)cma,
> + pr_debug("%s(cma %px, count %lu, align %d)\n", __func__, (void *)cma,
> count, align);
>
> if (!count)
> @@ -534,7 +534,7 @@ bool cma_pages_valid(struct cma *cma, const struct page *pages,
> pfn = page_to_pfn(pages);
>
> if (pfn < cma->base_pfn || pfn >= cma->base_pfn + cma->count) {
> - pr_debug("%s(page %p, count %lu)\n", __func__,
> + pr_debug("%s(page %px, count %lu)\n", __func__,
> (void *)pages, count);
> return false;
> }
> @@ -560,7 +560,7 @@ bool cma_release(struct cma *cma, const struct page *pages,
> if (!cma_pages_valid(cma, pages, count))
> return false;
>
> - pr_debug("%s(page %p, count %lu)\n", __func__, (void *)pages, count);
> + pr_debug("%s(page %px, count %lu)\n", __func__, (void *)pages, count);
>
> pfn = page_to_pfn(pages);
>
> --
> 1.9.1
>
>
