From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 6968C446048; Tue, 21 Jul 2026 09:30:16 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784626217; cv=none; b=RWoh+xwYlaovWdySHtRJ5371Y1baJB+VP1H5KnhcxrrvsTSUzDplODeaph5cG+mASw6ohxcWEYWayxynFNKiukiwb/DmwtZSPdHNBe48Dt8skMJR1T+GuFRooR1xCVcfOGjYd5u/dlft3pLWwWf0ZX2npo7zv1Olubq2Q6rHMCY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784626217; c=relaxed/simple; bh=KOiVVPyJ1rVdVrZF+oVNrN0wvOsC433ZBqN5ZJ9QG20=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=L4nWBP9/1SiscExhb6ZQsHAGPgUJN6cE6qxreOaCqR3gS6b0oXJvpGJAfuvzAB3DO1ZFfuVwYlgl2Mknhw3uTWmTJ2ISD390WZ7km2rFL0WdNqpK9oZlCbzSPbxMWwvoZhfgTCNasYIIiirX4tke/cWfPsDs26+yiVwHTF+wRhY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=cXc/RGN/; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="cXc/RGN/" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 95B811F000E9; Tue, 21 Jul 2026 09:30:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1784626216; bh=4FrzFFnuliDVci/9RIJav0eot32RM/T7R2sy1IPCPQg=; h=Date:Subject:To:Cc:References:From:In-Reply-To; b=cXc/RGN/EEk3TA8+aWGro2/Fnx0tx4VqletVomXjKh/MSCMNlLx1DvtbKHqHpwRkk Xj67CelJVOCdIPCsBc72IOTX+qyup/LH7e1bvo6gbcLLcyrbUiKhrBTWnQHDx1xCiq j9Oc4h2q5V8Jl6XngRVlWWEj5qjlVdyQle/2DzW8pO2kv7uuBBgPuW7MQ7OjiMW5vj 9gJhUKy09s8CjJcwgG5wrlSzJ5V8CX7ay6frImypxxbVDDnTiyEBtzNPo77T14zyKc +Hfqfc19ZH2fj7LV8n2x8bLlryY18726tYTYi/nEKE+aBZXSTBz2/Y0hbAvU3xM4IQ /gFH45HHc69oQ== Message-ID: <9e399c58-38c7-4c98-b22e-77f04f8b9f5b@kernel.org> Date: Tue, 21 Jul 2026 11:30:11 +0200 Precedence: bulk X-Mailing-List: linux-sparse@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] slab: silence sparse warning with type-based partitioning Content-Language: en-US To: Marco Elver , Andrew Morton , Chris Li Cc: Harry Yoo , Hao Li , Christoph Lameter , David Rientjes , Roman Gushchin , linux-mm@kvack.org, linux-kernel@vger.kernel.org, kasan-dev@googlegroups.com, kernel test robot , linux-sparse@vger.kernel.org References: <20260721092005.1986693-1-elver@google.com> From: "Vlastimil Babka (SUSE)" Autocrypt: addr=vbabka@kernel.org; keydata= xsFNBFZdmxYBEADsw/SiUSjB0dM+vSh95UkgcHjzEVBlby/Fg+g42O7LAEkCYXi/vvq31JTB KxRWDHX0R2tgpFDXHnzZcQywawu8eSq0LxzxFNYMvtB7sV1pxYwej2qx9B75qW2plBs+7+YB 87tMFA+u+L4Z5xAzIimfLD5EKC56kJ1CsXlM8S/LHcmdD9Ctkn3trYDNnat0eoAcfPIP2OZ+ 9oe9IF/R28zmh0ifLXyJQQz5ofdj4bPf8ecEW0rhcqHfTD8k4yK0xxt3xW+6Exqp9n9bydiy tcSAw/TahjW6yrA+6JhSBv1v2tIm+itQc073zjSX8OFL51qQVzRFr7H2UQG33lw2QrvHRXqD Ot7ViKam7v0Ho9wEWiQOOZlHItOOXFphWb2yq3nzrKe45oWoSgkxKb97MVsQ+q2SYjJRBBH4 8qKhphADYxkIP6yut/eaj9ImvRUZZRi0DTc8xfnvHGTjKbJzC2xpFcY0DQbZzuwsIZ8OPJCc LM4S7mT25NE5kUTG/TKQCk922vRdGVMoLA7dIQrgXnRXtyT61sg8PG4wcfOnuWf8577aXP1x 6mzw3/jh3F+oSBHb/GcLC7mvWreJifUL2gEdssGfXhGWBo6zLS3qhgtwjay0Jl+kza1lo+Cv BB2T79D4WGdDuVa4eOrQ02TxqGN7G0Biz5ZLRSFzQSQwLn8fbwARAQABzSNWbGFzdGltaWwg QmFia2EgPHZiYWJrYUBrZXJuZWwub3JnPsLBsAQTAQoAWhYhBKlA1DSZLC6OmRA9UCJPp+fM gqZkBQJqFFy6GxSAAAAAAAQADm1hbnUyLDIuNSsxLjEyLDIsMgIbAwUJGtCBUAULCQgHAwUV CgkICwUWAgMBAAIeBQIXgAAKCRAiT6fnzIKmZJIUEADFx/tREzUImHrEwVHeSvDFmA7tJysI UVrlvrM09E7GIuzphzv7jYmo8n3ANpCczLEVr4G0syYQdTigaZgv3+FQDIIzhKih1IHhu1Ei XHlywNWKnQxxQEUNi5Mwx43wQz5XVw9F1A7gtKBKNtfogO511hAbrzagrYajyQacEJ/+sfhZ 9Da8ltHIXD8pcYaHUfQgEusCgmEd9+KrUwrTbckFKmYq5chuE6yJ4J0EmWknL096jIE6CnzF FRslQ3B1UKDjxVsm1ZHfir5NeWszLkTvGFsddFaWTgh8UycESG6VQzKXjjewXu2pG7YQYRpj QKm1W5X2TkwWkXRBZTmfmbhxIUMh3+zf5wQ463rSmDN/8v81tdqBtAW6rH/kzg1GvkaTHXn0 507yEHFzBksk2viAuIxxr7km8+/KARYLIdGtx30EG8cKzAUZOK6WqxtNCsXUJNrVE8CWrCaD icoNu7Fs1c5hmPHdSTnU48ce67449DdnO4neLSNhRiGlMHJgfJUmgrxu/hcYeOZ3haWmEQ2w uW1Mh01OHi8QZHCEyAbABrPs9GUgccc/4eYXX9hIgxfSkYzn8f+8NuIFPWl/0uTvjgqU29FQ SbzOLxHq9439Ox40G5mS5eZXRGxITYR+6TXvRGI6P/264jvflnr/pDGUttaikU+0W+1uxgKH cmYbEc7ATQRbGTU1AQgAn0H6UrFiWcovkh6EXVcl+SeqyO6JHOPm+e9Wu0Vw+VIUvXZVUVVQ La1PQDUi6j00ChlcR66g9/V0sPIcSutacPKfdKYOBvzd4rlhL8rfrdEsQw5ApZxrA8kYZVMh FmBRKAa6wos25moTlMKpCWzTH84+WO5+ziCTsTUZASAToz3RdunTD+vQcHj0GqNTPAHK63sf bAB2I0BslZkXkY1RLb/YhuA6E7JyEd2pilZOrIuBGl/5q2qSakgnAVFWFBR/DO27JuAksYnq +aH8vI0xGvwn75KqSk4UzAkDzWSmO4ZHuahKtQgZNsMYV+PGayRBX9b9zbldzopoLBdqHc4n jQARAQABwsF8BBgBCgAmAhsMFiEEqUDUNJksLo6ZED1QIk+n58yCpmQFAmfIHFQFCRYU6J8A CgkQIk+n58yCpmS2PA//bqN1LfcotmArgElsa+0EGZSQlYgK48pm8WAeTXTngudP9IJ4SuKY HR5RNjHcBeqN+Me0zxRqYzRb8nGanHEkDyf4Im8DQM8d6vbyU+FcPmG4skud4kgS1zMHnlVd SXfSIwKC/hKgdHG8aBV7545Lz9X6Iohea+94wneD0aw/hqF+QWewGZhWJriWAZtvEkzNjQOi 4U9F/trLten/x7bpphDSnDMKJtITbtzATT1Dq7o7VpIUK1nCTQALMuMjKCdi8OdU/+V+R3O4 0PXWvX8qrvqYapVbZ+9KqT74FsuB0Ya9uXwgBF2Q6cRuETZk5vqaqKxzqoQZCO8AOz/58j6O 2RHNy/mZEN+7tJ5Tsq42zVJ4jxsT8b9YplavCMsnBgDeRWhcbYhCyttoL7nYISyWg4kQYZ/P wIV3OuNv2f8iKYsxNsRuClOAF82+gvqOy1/1pprFjy8uo2pkoOrb63aOP3vO5VHnRKgra6dq NcaZ+c6J4H+nEJGi2SkHAUJz5oBzuThvPudLvPA/SK8sKoM01IRxSihev/S/5WLazXB1PGem OCbvzC1IjWJJraxiDJ5IygokapUa2RP7+WBR22skQ3SSl6G107QgWKSyTOGWEaRmV53vxQLV jXuCmzSSasTL60zq5yGrT4/DYQVSNEUiUbG4pYekxJujNeEDkUlky0Y= In-Reply-To: <20260721092005.1986693-1-elver@google.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 7/21/26 11:19, Marco Elver wrote: > Sparse does not know __builtin_infer_alloc_token() and complains: > > sparse: sparse: undefined identifier '__builtin_infer_alloc_token' > > Fix it by using a dummy variant of __kmalloc_token() if __CHECKER__ is > defined. > > Fixes: feb662d9168b ("slab: support for compiler-assisted type-based slab cache partitioning") > Reported-by: kernel test robot > Closes: https://lore.kernel.org/oe-kbuild-all/202607110912.nZTqfCrH-lkp@intel.com/ > Signed-off-by: Marco Elver Added to slab/for-next-fixes, thanks! > --- > include/linux/slab.h | 6 +++++- > 1 file changed, 5 insertions(+), 1 deletion(-) > > diff --git a/include/linux/slab.h b/include/linux/slab.h > index 51f03f18c9a7..7ffe152ce483 100644 > --- a/include/linux/slab.h > +++ b/include/linux/slab.h > @@ -505,8 +505,12 @@ typedef struct { unsigned long v; } kmalloc_token_t; > extern unsigned long random_kmalloc_seed; > #define __kmalloc_token(...) ((kmalloc_token_t){ .v = _CODE_LOCATION_ }) > #elif defined(CONFIG_KMALLOC_PARTITION_TYPED) > +#ifdef __CHECKER__ > +#define __kmalloc_token(...) ((kmalloc_token_t){ .v = 0 }) > +#else /* !__CHECKER__ */ > #define __kmalloc_token(...) ((kmalloc_token_t){ .v = __builtin_infer_alloc_token(__VA_ARGS__) }) > -#endif > +#endif /* __CHECKER__ */ > +#endif /* CONFIG_KMALLOC_PARTITION_TYPED */ > #define DECL_TOKEN_PARAM(_token) , kmalloc_token_t (_token) > #define _PASS_TOKEN_PARAM(_token) , (_token) > #define PASS_TOKEN_PARAM(_token) (_token)