linux-kernel - [PATCH] mm/page_owner/cma: show pfn in cma/page

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Date:   Tue, 13 Jun 2023 17:25:33 +0800
From:   Kassey Li <quic_yingangl@...cinc.com>
To:     akpm@...ux-foundation.org, vbabka@...nel.org
Cc:     Kassey Li <quic_yingangl@...cinc.com>, minchan@...nel.org,
        vbabka@...e.cz, iamjoonsoo.kim@....com,
        linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: [PATCH] mm/page_owner/cma: show pfn in cma/page_onwer with hex format

pfn is more easy to read in CMA log, against with page_onwer
show in the same hex format.

Signed-off-by: Kassey Li <quic_yingangl@...cinc.com>
---
 mm/cma.c        | 4 ++--
 mm/page_owner.c | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/mm/cma.c b/mm/cma.c
index 6268d6620254..a4cfe995e11e 100644
--- a/mm/cma.c
+++ b/mm/cma.c
@@ -483,8 +483,8 @@ struct page *cma_alloc(struct cma *cma, unsigned long count,
 		if (ret != -EBUSY)
 			break;
 
-		pr_debug("%s(): memory range at %p is busy, retrying\n",
-			 __func__, pfn_to_page(pfn));
+		pr_debug("%s(): memory range at pfn 0x%lx %p is busy, retrying\n",
+			 __func__, pfn, pfn_to_page(pfn));
 
 		trace_cma_alloc_busy_retry(cma->name, pfn, pfn_to_page(pfn),
 					   count, align);
diff --git a/mm/page_owner.c b/mm/page_owner.c
index 31169b3e7f06..c93baef0148f 100644
--- a/mm/page_owner.c
+++ b/mm/page_owner.c
@@ -418,7 +418,7 @@ print_page_owner(char __user *buf, size_t count, unsigned long pfn,
 	pageblock_mt = get_pageblock_migratetype(page);
 	page_mt  = gfp_migratetype(page_owner->gfp_mask);
 	ret += scnprintf(kbuf + ret, count - ret,
-			"PFN %lu type %s Block %lu type %s Flags %pGp\n",
+			"PFN 0x%lx type %s Block %lu type %s Flags %pGp\n",
 			pfn,
 			migratetype_names[page_mt],
 			pfn >> pageblock_order,
-- 
2.17.1