From nobody Sun Dec 28 02:24:39 2025 Received: from mail-oi1-f182.google.com (mail-oi1-f182.google.com [209.85.167.182]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 166F56AA3 for ; Wed, 27 Dec 2023 06:23:35 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="d/jJP4jv" Received: by mail-oi1-f182.google.com with SMTP id 5614622812f47-3ba14203a34so5096194b6e.1 for ; Tue, 26 Dec 2023 22:23:35 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1703658215; x=1704263015; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=AP6TTZGYZvR9kHCkhdIlC9uA60kF06pnesaOZz6qvzM=; b=d/jJP4jvI0YJ4tRlbejSoCruKhDe8WxJ4b+np4WVj5bV4/F6ZYAGi2HVC+fynbIPzJ 3u/m6oNy7yX2hJX+IsMLKEDFWlnGUI6aSzC49MI88R7ofd75bHxYzqKh6pvCWL1/zFbX CkoY/Vkc5dDhjm8SLw2y0O1COm8gni1OkRcDEFSRX4VLTdYiBkccjxslUAzvBo5Ul601 YmyH2oLjIbLh1So66q1lWBOwMzcLDGQR11aqrbBTXABcvI+3caobxa6DVKtPr2XEjb+h cBnHJVkA9GszREdCr2FK1BkbTGr/rCw+EY5CuxyLUCsDxWeZbtabf43la0J0UCfqEjb8 +mxA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1703658215; x=1704263015; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=AP6TTZGYZvR9kHCkhdIlC9uA60kF06pnesaOZz6qvzM=; b=Ujp5/epcKb/QFhxQdDp3PSv43v96aozVLo0vTQsB/433QzebcjZTyyvEYxws/ZIkMj /wGOhcO7LbMid1G6tGgTe5RtssBhz8BqqTdoRZUqxhZ4+N2pxzg6wyzWdAo+07tZscd4 luRO6wcEwy9WO3FXhEaYD/mJ2Ft31bfCU2rEewxZx8nvQjMuyYYMyHacffwwW8ge0O2J mOpE2PS4wrLPMN0scL9YdMYbOy4eo5+pio31Iea4RAJxWwQp37bsUUCCr7LgdAZHEgg8 GrvgdfTZUzIPqwO9DrA4tflBUzYrbMSZPvHHt++sLrVBSO9aaUFTcUlAUs4RrpQmrNeV wjtA== X-Gm-Message-State: AOJu0Yy7P9m0t4azMfC9WSxw3AsYjAbuGxyLMvlF1+g2gvQv85dpt/ox yD7jamtIDMjx8y/T/E7Jf2c= X-Google-Smtp-Source: AGHT+IEQnS7vuOvg/nAGGlBYshazr+OpTFsczOIxBKICvJiuY0y9UfgggJ7L/wkKYVZkauUyHhxH2Q== X-Received: by 2002:a05:6808:1598:b0:3bb:c930:47fe with SMTP id t24-20020a056808159800b003bbc93047femr46219oiw.46.1703658215139; Tue, 26 Dec 2023 22:23:35 -0800 (PST) Received: from arm4c24g.vcn09251619.oraclevcn.com ([144.24.45.176]) by smtp.gmail.com with ESMTPSA id b19-20020a056a000cd300b006d99125b114sm8028907pfv.65.2023.12.26.22.23.34 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 26 Dec 2023 22:23:34 -0800 (PST) From: Xiaobing Luo To: Andrew Morton Cc: Xiaobing Luo , linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: [PATCH] mm/cma: change print format of pointer in pr_debug() With %p, the pointer will be hashed and print (____ptrval____) instead. Date: Wed, 27 Dec 2023 06:18:25 +0000 Message-Id: <20231227061825.116177-1-luoxiaobing0926@gmail.com> X-Mailer: git-send-email 2.34.1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" [ 0.070467] cma: cma_alloc(cma (____ptrval____), count 256, align 8) [ 0.073003] cma: cma_alloc(): returned (____ptrval____) Use 0x%px instead of %p to print the pointer. Then the print will be like: [ 0.054963] cma: cma_alloc(cma 0xffffffde9ad42a60, count 256, align 8) [ 0.057385] cma: cma_alloc(): returned 0xfffffffe003b0000 Signed-off-by: Xiaobing Luo --- mm/cma.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/mm/cma.c b/mm/cma.c index 2b2494fd6b59..4559f903df8f 100644 --- a/mm/cma.c +++ b/mm/cma.c @@ -440,7 +440,7 @@ struct page *cma_alloc(struct cma *cma, unsigned long c= ount, if (!cma || !cma->count || !cma->bitmap) goto out; =20 - pr_debug("%s(cma %p, name: %s, count %lu, align %d)\n", __func__, + pr_debug("%s(cma 0x%px, name: %s, count %lu, align %d)\n", __func__, (void *)cma, cma->name, count, align); =20 if (!count) @@ -487,7 +487,7 @@ struct page *cma_alloc(struct cma *cma, unsigned long c= ount, if (ret !=3D -EBUSY) break; =20 - pr_debug("%s(): memory range at pfn 0x%lx %p is busy, retrying\n", + pr_debug("%s(): memory range at pfn 0x%lx 0x%px is busy, retrying\n", __func__, pfn, pfn_to_page(pfn)); =20 trace_cma_alloc_busy_retry(cma->name, pfn, pfn_to_page(pfn), @@ -514,7 +514,7 @@ struct page *cma_alloc(struct cma *cma, unsigned long c= ount, cma_debug_show_areas(cma); } =20 - pr_debug("%s(): returned %p\n", __func__, page); + pr_debug("%s(): returned 0x%px\n", __func__, page); out: if (page) { count_vm_event(CMA_ALLOC_SUCCESS); @@ -539,7 +539,7 @@ bool cma_pages_valid(struct cma *cma, const struct page= *pages, pfn =3D page_to_pfn(pages); =20 if (pfn < cma->base_pfn || pfn >=3D cma->base_pfn + cma->count) { - pr_debug("%s(page %p, count %lu)\n", __func__, + pr_debug("%s(page 0x%px, count %lu)\n", __func__, (void *)pages, count); return false; } @@ -565,7 +565,7 @@ bool cma_release(struct cma *cma, const struct page *pa= ges, if (!cma_pages_valid(cma, pages, count)) return false; =20 - pr_debug("%s(page %p, count %lu)\n", __func__, (void *)pages, count); + pr_debug("%s(page 0x%px, count %lu)\n", __func__, (void *)pages, count); =20 pfn =3D page_to_pfn(pages); =20 --=20 2.34.1