From mboxrd@z Thu Jan 1 00:00:00 1970 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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6563FC433F5 for ; Sat, 7 May 2022 22:48:39 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 89F046B0071; Sat, 7 May 2022 18:48:38 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 84E5F6B0074; Sat, 7 May 2022 18:48:38 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 6F99D6B0071; Sat, 7 May 2022 18:48:38 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0012.hostedemail.com [216.40.44.12]) by kanga.kvack.org (Postfix) with ESMTP id 5D3916B0071 for ; Sat, 7 May 2022 18:48:38 -0400 (EDT) Received: from smtpin28.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay08.hostedemail.com (Postfix) with ESMTP id 3005220A70 for ; Sat, 7 May 2022 22:48:38 +0000 (UTC) X-FDA: 79440437916.28.53052D6 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by imf09.hostedemail.com (Postfix) with ESMTP id CBFEB140033 for ; Sat, 7 May 2022 22:48:30 +0000 (UTC) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 049706006F; Sat, 7 May 2022 22:48:37 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 380BCC385A6; Sat, 7 May 2022 22:48:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1651963716; bh=3hD1odyYF7+plVfTKfPnnOghRVD+Di4Bd0iPgA+Z/dA=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=SuHx4dpP+1BSmITPs2XpGR8bUMFnY40RpuUT7xlz8Lg54faCp+cj5/YEpaWDRohZ2 +l7Fu55zT0NufMEdSXcG5PDJAIA13ILxZKHibHbDWI1yHKMtDbuvR/Jb1NeKOlCpD+ hJzMM7nmt1h2yFB0b9wxFxP/7k/tSmTii/cSkluo= Date: Sat, 7 May 2022 15:48:35 -0700 From: Andrew Morton To: Vasily Averin Cc: Steven Rostedt , Ingo Molnar , kernel@openvz.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: Re: [PATCH mm] tracing: incorrect gfp_t conversion Message-Id: <20220507154835.4d4d737d8eed579969f15938@linux-foundation.org> In-Reply-To: <8b1cfefa-da7d-3376-cf04-1ff77dab8170@openvz.org> References: <331d88fe-f4f7-657c-02a2-d977f15fbff6@openvz.org> <20220507123728.f20d977eba9fbb66bddee722@linux-foundation.org> <8b1cfefa-da7d-3376-cf04-1ff77dab8170@openvz.org> X-Mailer: Sylpheed 3.7.0 (GTK+ 2.24.33; x86_64-redhat-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Stat-Signature: 9bbxommb8wdzxzjrt3iqitorkswwyrx3 X-Rspamd-Server: rspam07 X-Rspamd-Queue-Id: CBFEB140033 X-Rspam-User: Authentication-Results: imf09.hostedemail.com; dkim=pass header.d=linux-foundation.org header.s=korg header.b=SuHx4dpP; dmarc=none; spf=pass (imf09.hostedemail.com: domain of akpm@linux-foundation.org designates 139.178.84.217 as permitted sender) smtp.mailfrom=akpm@linux-foundation.org X-HE-Tag: 1651963710-422972 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: On Sun, 8 May 2022 01:28:58 +0300 Vasily Averin wrote: > On 5/7/22 22:37, Andrew Morton wrote: > > On Sat, 7 May 2022 22:02:05 +0300 Vasily Averin wrote: > >> + {(__force unsigned long)GFP_KERNEL, "GFP_KERNEL"}, \ > >> + {(__force unsigned long)GFP_NOFS, "GFP_NOFS"}, \ > > > > This got all repetitive, line-wrappy and ugly :( > > > > What do we think of something silly like this? > > > --- a/include/trace/events/mmflags.h~tracing-incorrect-gfp_t-conversion-fix > > +++ a/include/trace/events/mmflags.h > > @@ -13,53 +13,57 @@ > > * Thus most bits set go first. > > */ > > > > +#define FUL __force unsigned long > > + > > #define __def_gfpflag_names \ > > - {(__force unsigned long)GFP_TRANSHUGE, "GFP_TRANSHUGE"}, \ > > - {(__force unsigned long)GFP_TRANSHUGE_LIGHT, "GFP_TRANSHUGE_LIGHT"}, \ > ... > > + {(FUL)GFP_TRANSHUGE, "GFP_TRANSHUGE"}, \ > > + {(FUL)GFP_TRANSHUGE_LIGHT, "GFP_TRANSHUGE_LIGHT"}, \ > > > I think it's a good idea, and I regret it was your idea and not mine. heh > Should I resend my patch with these changes or would you prefer > to keep your patch as a separate one? I did the below. I'll squash them together later. --- a/include/trace/events/mmflags.h~tracing-incorrect-gfp_t-conversion-fix +++ a/include/trace/events/mmflags.h @@ -13,53 +13,57 @@ * Thus most bits set go first. */ +#define FUL __force unsigned long + #define __def_gfpflag_names \ - {(__force unsigned long)GFP_TRANSHUGE, "GFP_TRANSHUGE"}, \ - {(__force unsigned long)GFP_TRANSHUGE_LIGHT, "GFP_TRANSHUGE_LIGHT"}, \ - {(__force unsigned long)GFP_HIGHUSER_MOVABLE, "GFP_HIGHUSER_MOVABLE"},\ - {(__force unsigned long)GFP_HIGHUSER, "GFP_HIGHUSER"}, \ - {(__force unsigned long)GFP_USER, "GFP_USER"}, \ - {(__force unsigned long)GFP_KERNEL_ACCOUNT, "GFP_KERNEL_ACCOUNT"}, \ - {(__force unsigned long)GFP_KERNEL, "GFP_KERNEL"}, \ - {(__force unsigned long)GFP_NOFS, "GFP_NOFS"}, \ - {(__force unsigned long)GFP_ATOMIC, "GFP_ATOMIC"}, \ - {(__force unsigned long)GFP_NOIO, "GFP_NOIO"}, \ - {(__force unsigned long)GFP_NOWAIT, "GFP_NOWAIT"}, \ - {(__force unsigned long)GFP_DMA, "GFP_DMA"}, \ - {(__force unsigned long)__GFP_HIGHMEM, "__GFP_HIGHMEM"}, \ - {(__force unsigned long)GFP_DMA32, "GFP_DMA32"}, \ - {(__force unsigned long)__GFP_HIGH, "__GFP_HIGH"}, \ - {(__force unsigned long)__GFP_ATOMIC, "__GFP_ATOMIC"}, \ - {(__force unsigned long)__GFP_IO, "__GFP_IO"}, \ - {(__force unsigned long)__GFP_FS, "__GFP_FS"}, \ - {(__force unsigned long)__GFP_NOWARN, "__GFP_NOWARN"}, \ - {(__force unsigned long)__GFP_RETRY_MAYFAIL, "__GFP_RETRY_MAYFAIL"}, \ - {(__force unsigned long)__GFP_NOFAIL, "__GFP_NOFAIL"}, \ - {(__force unsigned long)__GFP_NORETRY, "__GFP_NORETRY"}, \ - {(__force unsigned long)__GFP_COMP, "__GFP_COMP"}, \ - {(__force unsigned long)__GFP_ZERO, "__GFP_ZERO"}, \ - {(__force unsigned long)__GFP_NOMEMALLOC, "__GFP_NOMEMALLOC"}, \ - {(__force unsigned long)__GFP_MEMALLOC, "__GFP_MEMALLOC"}, \ - {(__force unsigned long)__GFP_HARDWALL, "__GFP_HARDWALL"}, \ - {(__force unsigned long)__GFP_THISNODE, "__GFP_THISNODE"}, \ - {(__force unsigned long)__GFP_RECLAIMABLE, "__GFP_RECLAIMABLE"}, \ - {(__force unsigned long)__GFP_MOVABLE, "__GFP_MOVABLE"}, \ - {(__force unsigned long)__GFP_ACCOUNT, "__GFP_ACCOUNT"}, \ - {(__force unsigned long)__GFP_WRITE, "__GFP_WRITE"}, \ - {(__force unsigned long)__GFP_RECLAIM, "__GFP_RECLAIM"}, \ - {(__force unsigned long)__GFP_DIRECT_RECLAIM, "__GFP_DIRECT_RECLAIM"},\ - {(__force unsigned long)__GFP_KSWAPD_RECLAIM, "__GFP_KSWAPD_RECLAIM"},\ - {(__force unsigned long)__GFP_ZEROTAGS, "__GFP_ZEROTAGS"} \ + {(FUL)GFP_TRANSHUGE, "GFP_TRANSHUGE"}, \ + {(FUL)GFP_TRANSHUGE_LIGHT, "GFP_TRANSHUGE_LIGHT"}, \ + {(FUL)GFP_HIGHUSER_MOVABLE, "GFP_HIGHUSER_MOVABLE"}, \ + {(FUL)GFP_HIGHUSER, "GFP_HIGHUSER"}, \ + {(FUL)GFP_USER, "GFP_USER"}, \ + {(FUL)GFP_KERNEL_ACCOUNT, "GFP_KERNEL_ACCOUNT"}, \ + {(FUL)GFP_KERNEL, "GFP_KERNEL"}, \ + {(FUL)GFP_NOFS, "GFP_NOFS"}, \ + {(FUL)GFP_ATOMIC, "GFP_ATOMIC"}, \ + {(FUL)GFP_NOIO, "GFP_NOIO"}, \ + {(FUL)GFP_NOWAIT, "GFP_NOWAIT"}, \ + {(FUL)GFP_DMA, "GFP_DMA"}, \ + {(FUL)__GFP_HIGHMEM, "__GFP_HIGHMEM"}, \ + {(FUL)GFP_DMA32, "GFP_DMA32"}, \ + {(FUL)__GFP_HIGH, "__GFP_HIGH"}, \ + {(FUL)__GFP_ATOMIC, "__GFP_ATOMIC"}, \ + {(FUL)__GFP_IO, "__GFP_IO"}, \ + {(FUL)__GFP_FS, "__GFP_FS"}, \ + {(FUL)__GFP_NOWARN, "__GFP_NOWARN"}, \ + {(FUL)__GFP_RETRY_MAYFAIL, "__GFP_RETRY_MAYFAIL"}, \ + {(FUL)__GFP_NOFAIL, "__GFP_NOFAIL"}, \ + {(FUL)__GFP_NORETRY, "__GFP_NORETRY"}, \ + {(FUL)__GFP_COMP, "__GFP_COMP"}, \ + {(FUL)__GFP_ZERO, "__GFP_ZERO"}, \ + {(FUL)__GFP_NOMEMALLOC, "__GFP_NOMEMALLOC"}, \ + {(FUL)__GFP_MEMALLOC, "__GFP_MEMALLOC"}, \ + {(FUL)__GFP_HARDWALL, "__GFP_HARDWALL"}, \ + {(FUL)__GFP_THISNODE, "__GFP_THISNODE"}, \ + {(FUL)__GFP_RECLAIMABLE, "__GFP_RECLAIMABLE"}, \ + {(FUL)__GFP_MOVABLE, "__GFP_MOVABLE"}, \ + {(FUL)__GFP_ACCOUNT, "__GFP_ACCOUNT"}, \ + {(FUL)__GFP_WRITE, "__GFP_WRITE"}, \ + {(FUL)__GFP_RECLAIM, "__GFP_RECLAIM"}, \ + {(FUL)__GFP_DIRECT_RECLAIM, "__GFP_DIRECT_RECLAIM"}, \ + {(FUL)__GFP_KSWAPD_RECLAIM, "__GFP_KSWAPD_RECLAIM"}, \ + {(FUL)__GFP_ZEROTAGS, "__GFP_ZEROTAGS"} \ #ifdef CONFIG_KASAN_HW_TAGS -#define __def_gfpflag_names_kasan , \ - {(__force unsigned long)__GFP_SKIP_ZERO, "__GFP_SKIP_ZERO"}, \ - {(__force unsigned long)__GFP_SKIP_KASAN_POISON, "__GFP_SKIP_KASAN_POISON"}, \ - {(__force unsigned long)__GFP_SKIP_KASAN_UNPOISON, "__GFP_SKIP_KASAN_UNPOISON"} +#define __def_gfpflag_names_kasan , \ + {(FUL)__GFP_SKIP_ZERO, "__GFP_SKIP_ZERO"}, \ + {(FUL)__GFP_SKIP_KASAN_POISON, "__GFP_SKIP_KASAN_POISON"}, \ + {(FUL)__GFP_SKIP_KASAN_UNPOISON,"__GFP_SKIP_KASAN_UNPOISON"} #else #define __def_gfpflag_names_kasan #endif +#undef FUL + #define show_gfp_flags(flags) \ (flags) ? __print_flags(flags, "|", \ __def_gfpflag_names __def_gfpflag_names_kasan \ _