From patchwork Tue Oct 19 14:26:21 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Matthew Wilcox (Oracle)" X-Patchwork-Id: 12570087 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7B3AFC433FE for ; Tue, 19 Oct 2021 14:35:21 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 1D0836115A for ; Tue, 19 Oct 2021 14:35:21 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 1D0836115A Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=kvack.org Received: by kanga.kvack.org (Postfix) id AB1F96B0071; Tue, 19 Oct 2021 10:35:20 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id A3A566B0072; Tue, 19 Oct 2021 10:35:20 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 928DB6B0073; Tue, 19 Oct 2021 10:35:20 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0113.hostedemail.com [216.40.44.113]) by kanga.kvack.org (Postfix) with ESMTP id 82E916B0071 for ; Tue, 19 Oct 2021 10:35:20 -0400 (EDT) Received: from smtpin21.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id 3771D2DEB9 for ; Tue, 19 Oct 2021 14:35:20 +0000 (UTC) X-FDA: 78713434800.21.508A23E Received: from casper.infradead.org (casper.infradead.org [90.155.50.34]) by imf15.hostedemail.com (Postfix) with ESMTP id B91ECD000081 for ; Tue, 19 Oct 2021 14:35:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=Content-Transfer-Encoding:MIME-Version: References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To: Content-Type:Content-ID:Content-Description; bh=Rq5xxZ3fm9eNauFFvcKIA2C9/+5UDRw3Mg6hxQN8Dmw=; b=ODhamrZuMnOV78k5UkBttGeVhz koANH3FMLLLkWLQXJTS6fyqZhkdplKLJWnZARV15yGXKNdSSpKTR1ss/VwBokyG1UHbBUCsbmsRAB 52a2HekhZrVq0ZoCCwPyXlRapAb6gFnhx/e65TupjHLOfJtOyIVsM3VB7XpBV82azVhxRXcPQfwYl f4ZB5M2A5Szjoq6VUI58g0mxyUL31NFKWPt5MhPaVZrE7Hkew4a5l6Q0JW4J7/UPwRA8aN7FgpJs8 brt4mApCA/HdgimhHGbZLofZrVlIlw8VrawEWP80qrXXbtSqKQYhWL5Gr7FlP9sywWY6i+f2lBwVa hXTx4UIg==; Received: from willy by casper.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1mcq9p-00BnDF-GR; Tue, 19 Oct 2021 14:32:33 +0000 From: "Matthew Wilcox (Oracle)" To: Yafang Shao Cc: "Matthew Wilcox (Oracle)" , Sergey Senozhatsky , Petr Mladek , linux-mm@kvack.org, Vlastimil Babka , Rasmus Villemoes Subject: [PATCH v2 5/5] vsprintf: Make %pGp print the hex value Date: Tue, 19 Oct 2021 15:26:21 +0100 Message-Id: <20211019142621.2810043-6-willy@infradead.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20211019142621.2810043-1-willy@infradead.org> References: <20211019142621.2810043-1-willy@infradead.org> MIME-Version: 1.0 Authentication-Results: imf15.hostedemail.com; dkim=pass header.d=infradead.org header.s=casper.20170209 header.b=ODhamrZu; dmarc=none; spf=none (imf15.hostedemail.com: domain of willy@infradead.org has no SPF policy when checking 90.155.50.34) smtp.mailfrom=willy@infradead.org X-Rspamd-Server: rspam01 X-Rspamd-Queue-Id: B91ECD000081 X-Stat-Signature: usdy4fcannpuafsk9wfie7f1xcuezfr7 X-HE-Tag: 1634654116-721979 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: All existing users of %pGp want the hex value as well as the decoded flag names. This looks awkward (passing the same parameter to printf twice), so move that functionality into the core. If we want, we can make that optional with flag arguments to %pGp in the future. Signed-off-by: Matthew Wilcox (Oracle) Reviewed-by: Yafang Shao Reviewed-by: Petr Mladek --- lib/test_printf.c | 9 +++++++-- lib/vsprintf.c | 8 ++++++++ mm/debug.c | 2 +- mm/memory-failure.c | 8 ++++---- mm/page_owner.c | 4 ++-- mm/slub.c | 4 ++-- 6 files changed, 24 insertions(+), 11 deletions(-) diff --git a/lib/test_printf.c b/lib/test_printf.c index d09993fca463..07309c45f327 100644 --- a/lib/test_printf.c +++ b/lib/test_printf.c @@ -609,10 +609,14 @@ page_flags_test(int section, int node, int zone, int last_cpupid, char *cmp_buf) { unsigned long values[] = {section, node, zone, last_cpupid, kasan_tag}; - unsigned long size = 0; + unsigned long size; bool append = false; int i; + for (i = 0; i < ARRAY_SIZE(values); i++) + flags |= (values[i] & pft[i].mask) << pft[i].shift; + + size = scnprintf(cmp_buf, BUF_SIZE, "%#lx(", flags); if (flags & PAGEFLAGS_MASK) { size += scnprintf(cmp_buf + size, BUF_SIZE - size, "%s", name); append = true; @@ -625,7 +629,6 @@ page_flags_test(int section, int node, int zone, int last_cpupid, if (append) size += scnprintf(cmp_buf + size, BUF_SIZE - size, "|"); - flags |= (values[i] & pft[i].mask) << pft[i].shift; size += scnprintf(cmp_buf + size, BUF_SIZE - size, "%s=", pft[i].name); size += scnprintf(cmp_buf + size, BUF_SIZE - size, pft[i].fmt, @@ -633,6 +636,8 @@ page_flags_test(int section, int node, int zone, int last_cpupid, append = true; } + snprintf(cmp_buf + size, BUF_SIZE - size, ")"); + test(cmp_buf, "%pGp", &flags); } diff --git a/lib/vsprintf.c b/lib/vsprintf.c index d7ad44f2c8f5..214098248610 100644 --- a/lib/vsprintf.c +++ b/lib/vsprintf.c @@ -2023,6 +2023,11 @@ char *format_page_flags(char *buf, char *end, unsigned long flags) bool append = false; int i; + buf = number(buf, end, flags, default_flag_spec); + if (buf < end) + *buf = '('; + buf++; + /* Page flags from the main area. */ if (main_flags) { buf = format_flags(buf, end, main_flags, pageflag_names); @@ -2051,6 +2056,9 @@ char *format_page_flags(char *buf, char *end, unsigned long flags) append = true; } + if (buf < end) + *buf = ')'; + buf++; return buf; } diff --git a/mm/debug.c b/mm/debug.c index fae0f81ad831..714be101dec9 100644 --- a/mm/debug.c +++ b/mm/debug.c @@ -162,7 +162,7 @@ static void __dump_page(struct page *page) out_mapping: BUILD_BUG_ON(ARRAY_SIZE(pageflag_names) != __NR_PAGEFLAGS + 1); - pr_warn("%sflags: %#lx(%pGp)%s\n", type, head->flags, &head->flags, + pr_warn("%sflags: %pGp%s\n", type, &head->flags, page_cma ? " CMA" : ""); print_hex_dump(KERN_WARNING, "raw: ", DUMP_PREFIX_NONE, 32, sizeof(unsigned long), page, diff --git a/mm/memory-failure.c b/mm/memory-failure.c index 3e6449f2102a..e4e122a2e9b1 100644 --- a/mm/memory-failure.c +++ b/mm/memory-failure.c @@ -2109,14 +2109,14 @@ static int __soft_offline_page(struct page *page) if (!list_empty(&pagelist)) putback_movable_pages(&pagelist); - pr_info("soft offline: %#lx: %s migration failed %d, type %lx (%pGp)\n", - pfn, msg_page[huge], ret, page->flags, &page->flags); + pr_info("soft offline: %#lx: %s migration failed %d, type %pGp\n", + pfn, msg_page[huge], ret, &page->flags); if (ret > 0) ret = -EBUSY; } } else { - pr_info("soft offline: %#lx: %s isolation failed, page count %d, type %lx (%pGp)\n", - pfn, msg_page[huge], page_count(page), page->flags, &page->flags); + pr_info("soft offline: %#lx: %s isolation failed, page count %d, type %pGp\n", + pfn, msg_page[huge], page_count(page), &page->flags); ret = -EBUSY; } return ret; diff --git a/mm/page_owner.c b/mm/page_owner.c index 62402d22539b..4afc713ca525 100644 --- a/mm/page_owner.c +++ b/mm/page_owner.c @@ -351,12 +351,12 @@ 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 += snprintf(kbuf + ret, count - ret, - "PFN %lu type %s Block %lu type %s Flags %#lx(%pGp)\n", + "PFN %lu type %s Block %lu type %s Flags %pGp\n", pfn, migratetype_names[page_mt], pfn >> pageblock_order, migratetype_names[pageblock_mt], - page->flags, &page->flags); + &page->flags); if (ret >= count) goto err; diff --git a/mm/slub.c b/mm/slub.c index 3d2025f7163b..f7ac28646580 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -763,9 +763,9 @@ void print_tracking(struct kmem_cache *s, void *object) static void print_page_info(struct page *page) { - pr_err("Slab 0x%p objects=%u used=%u fp=0x%p flags=%#lx(%pGp)\n", + pr_err("Slab 0x%p objects=%u used=%u fp=0x%p flags=%pGp\n", page, page->objects, page->inuse, page->freelist, - page->flags, &page->flags); + &page->flags); }