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bh=slFeSu4AqtBj1Xx91s6ZBfnTR7RAaI0yh7MOot2s+hI=; b=uZjlzZHEcrEraHjTrYvDvGoAigh0nHofCkfQrlqCBFtQiNPIwXR8jRyaiTWr3TdxhSWrLI SogJV4V974IIxeVDHrgNTFWJ9ybXrK9Q5wqsEhf0Rjft1SXXgca68gfGJSG8SA++0qIlpa r0DBxV8JN+1qBEppnIuK/VwPtGgxlzg= ARC-Authentication-Results: i=1; imf19.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20260515 header.b=lMJbdi4R; spf=pass (imf19.hostedemail.com: domain of vbabka@kernel.org designates 172.105.4.254 as permitted sender) smtp.mailfrom=vbabka@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by tor.source.kernel.org (Postfix) with ESMTP id 8267B6001D; Mon, 29 Jun 2026 08:13:06 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7FD481F000E9; Mon, 29 Jun 2026 08:13:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1782720786; bh=slFeSu4AqtBj1Xx91s6ZBfnTR7RAaI0yh7MOot2s+hI=; h=Date:Subject:To:Cc:References:From:In-Reply-To; b=lMJbdi4R314M+6kLOjYuCWMzIshteAzty/tx72gb/1TyN80fRw6wmPzXyuYV1p7ua LTzIubWu5rRicQaLy/tvQt+PxgF0HsYuNHqd7UwzvnO0442HLzWYTgQCKybhTyi+yp Zj2P97y8CnyKZ3siBx31G/UC55aOljQXoHyy0igJGncxF3+LOODg9BfTro8R0Tattd 1VlYmZbKNVcy+TyjtvLnVrtuKcR4p7gcsTWk3OEh11HkCPBWXSsNiDGYmPqogqL5Ck Tuzj8Jd4cqi4mmFhzAI5l4b3+nsIzmCgDnhJqrbXhBLavWvw8XVw48N2ucXuVH6lX8 oSvmSnIr91Iig== Message-ID: <96c919ca-9b35-426f-a142-4d8450a54953@kernel.org> Date: Mon, 29 Jun 2026 10:13:03 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 5/6] mm/page_owner: move free_ts_nsec output to free section in __dump_page_owner() Content-Language: en-US To: Ye Liu , Andrew Morton Cc: Suren Baghdasaryan , Michal Hocko , Brendan Jackman , Johannes Weiner , Zi Yan , linux-mm@kvack.org, linux-kernel@vger.kernel.org References: <20260626024550.25677-1-ye.liu@linux.dev> <20260626024550.25677-6-ye.liu@linux.dev> 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: <20260626024550.25677-6-ye.liu@linux.dev> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: 0AD721A0008 X-Stat-Signature: ctmm7q9jqhzrci7s61z1nmgmmjad983y X-Rspam-User: X-Rspamd-Server: rspam03 X-HE-Tag: 1782720786-819818 X-HE-Meta: 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 xaNN8T+7 bsNQzLbN/DtsFD7q4hg/b9dM3ksXwkBril9UjNZagakEekTRkj7ex/ZATjPx+sQ/jii3RB2Cmje0u4Vkw1R9KmvCY7jx/KQ5BMEaSllclfBfHXS0OSLbr3pFBDrIZVGdcveiUY+k1Edkmlq3DSQb+ytZxMwNa6w7ADHNtDkpwVLaJOaGcp8blaco/8lAnmtNFxjXFqO5HuQPMtK67Aa92HFJo3wPcAH/ZuSkdQmmv4kTVqj5Xo2LoW4HgVxMUkS6z1nVLmx1sZvSjoso/IOeC1ul9ddwptH2/8sxMxTmNZKOspnvneAOS8WD4VM8j2j7vbOBJHgp8H3Jz1yw= Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 6/26/26 04:45, Ye Liu wrote: > The free_ts_nsec field is a free-event timestamp, but it was printed > in the allocation summary line alongside ts_nsec (allocation time). > Move it to the free section where it logically belongs, together with > free_pid and free_tgid. This also makes __dump_page_owner() consistent > with print_page_owner(), which only prints ts_nsec in the allocation > summary. > > The output now groups all free-related information (pid, tgid, > timestamp, stack trace) in one place. > > No functional change except output formatting. > > Signed-off-by: Ye Liu Reviewed-by: Vlastimil Babka (SUSE) If it breaks anything and they complain, we'll deal with that, but the risk is low in this case so it shouldn't stop us from trying. > --- > mm/page_owner.c | 9 +++++---- > 1 file changed, 5 insertions(+), 4 deletions(-) > > diff --git a/mm/page_owner.c b/mm/page_owner.c > index 958151ccb587..eaccff355cb4 100644 > --- a/mm/page_owner.c > +++ b/mm/page_owner.c > @@ -660,10 +660,10 @@ void __dump_page_owner(const struct page *page) > else > pr_alert("page_owner tracks the page as freed\n"); > > - pr_alert("page last allocated via order %u, migratetype %s, gfp_mask %#x(%pGg), pid %d, tgid %d (%s), ts %llu, free_ts %llu\n", > + pr_alert("page last allocated via order %u, migratetype %s, gfp_mask %#x(%pGg), pid %d, tgid %d (%s), ts %llu\n", > page_owner->order, migratetype_names[mt], gfp_mask, &gfp_mask, > page_owner->pid, page_owner->tgid, page_owner->comm, > - page_owner->ts_nsec, page_owner->free_ts_nsec); > + page_owner->ts_nsec); > > handle = READ_ONCE(page_owner->handle); > if (!handle) > @@ -675,8 +675,9 @@ void __dump_page_owner(const struct page *page) > if (!handle) { > pr_alert("page_owner free stack trace missing\n"); > } else { > - pr_alert("page last free pid %d tgid %d stack trace:\n", > - page_owner->free_pid, page_owner->free_tgid); > + pr_alert("page last free pid %d tgid %d ts %llu stack trace:\n", > + page_owner->free_pid, page_owner->free_tgid, > + page_owner->free_ts_nsec); > stack_depot_print(handle); > } >