linux-kernel - [PATCH] mm: fix printk format within cma

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Date:   Tue, 18 Apr 2023 11:33:09 +0800
From:   "zhaoyang.huang" <zhaoyang.huang@...soc.com>
To:     Andrew Morton <akpm@...ux-foundation.org>,
        Minchan Kim <minchan@...nel.org>,
        Joonsoo Kim <iamjoonsoo.kim@....com>, <linux-mm@...ck.org>,
        <linux-kernel@...r.kernel.org>,
        Zhaoyang Huang <huangzhaoyang@...il.com>, <ke.wang@...soc.com>
Subject: [PATCH] mm: fix printk format within cma

From: Zhaoyang Huang <zhaoyang.huang@...soc.com>

cma and page pointer printed via %p are hash value which make debug to be hard.
change them to %px.

[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@...soc.com>
---
 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