From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Google-Smtp-Source: AIpwx48IAx2kklPj/sIwxgArKtCBFmUFYz/bx3L63kMWarqNFm7bHJzIQQ0xS661nEZeRNnlKnyz ARC-Seal: i=1; a=rsa-sha256; t=1522077676; cv=none; d=google.com; s=arc-20160816; b=tbme4TtEFkOmhxunn5ciEGusCRPBVszv2BohEWkbAaQQRj2qqi6LI8FsGf2f5WS6k6 5mEL0XtPKevH/8eVSMS667lpPk+wXuVu7Jv5vUzhDDgxTX+26Ngc5Crjz5qTmXXLublp jiPloUJvcCPSAE/tKUS2b4wnhrGdz9XfGwSr89KVGqUJ+beKwI5/ZhPQ1Q9ttyLyq+1d VvdV+j3eg4Rs0gXreaQSF/llwLT/dZKSX+APczNGlGXr3Qc1qsp22ROB2y5J/8pYK5U7 sKSL7WpmyRKUO/Zr9RQ/TL2mCqwHvpSksaa/KMDdIMxARBq7FlQ1MtivJT7J63LGYW5y dk4Q== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=references:dlp-filter:cms-type:content-transfer-encoding:date :message-id:in-reply-to:cc:to:from:sender:reply-to:subject :mime-version:dkim-signature:dkim-filter:arc-authentication-results; bh=AJRZ9eST6gSttUUZVcVcIwR37oZaFYvVQlFIdQOEmt0=; b=DKwyPXvBoz5bQMx6of6L8kfMgMc7xIiu1TZ/BhmHEMBK4wtlgxSb9uU1IzF6ybquwP MDJuirICMiy0QgLNXzebjLkruVzP3Gyt05hUiAHwipPatB5+IBcv2S/GLZPGUIgCX8T1 eSxpj7pNvDog6o56WlxZKH1LdfIthqkIFWk2PBc63fWt+OTyeEHes08r/5lHZz5/Uw01 hSoei+SvlQrofqe5QAZul68ZeNjAzf2paXjRGap1DQc+g4R6Bnq5i3F41HeSQQqcjNBf ZiLpnt0DwUZrQ9+o7+JMYcGZLDvVGfwBJT845aeaZ0jlRdiItZYYhGp9eD/w9qFKzPgQ xLUA== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@samsung.com header.s=mail20170921 header.b=K44aQi6J; spf=pass (google.com: domain of v.narang@samsung.com designates 203.254.224.25 as permitted sender) smtp.mailfrom=v.narang@samsung.com; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=samsung.com Authentication-Results: mx.google.com; dkim=pass header.i=@samsung.com header.s=mail20170921 header.b=K44aQi6J; spf=pass (google.com: domain of v.narang@samsung.com designates 203.254.224.25 as permitted sender) smtp.mailfrom=v.narang@samsung.com; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=samsung.com DKIM-Filter: OpenDKIM Filter v2.11.0 mailout2.samsung.com 20180326152114epoutp02147adee49e175730f9c0cbe2a4a94884~fgZSo-p3P3273332733epoutp02_ X-AuditID: b6c32a49-71dff70000000fee-d2-5ab90fe9fb9f Mime-Version: 1.0 Subject: RE: Re: [PATCH v2] mm/page_owner: ignore everything below the IRQ entry point Reply-To: v.narang@samsung.com Sender: Vaneet Narang From: Vaneet Narang To: Dmitry Vyukov , Maninder Singh CC: Andrey Ryabinin , Alexander Potapenko , Kate Stewart , Thomas Gleixner , Philippe Ombredanne , Greg Kroah-Hartman , Andrew Morton , Vlastimil Babka , Stephen Rothwell , Michal Hocko , "vinmenon@codeaurora.org" , "gomonovych@gmail.com" , Ayush Mittal , LKML , kasan-dev , Linux-MM , AMIT SAHRAWAT , PANKAJ MISHRA X-Priority: 3 X-Content-Kind-Code: NORMAL In-Reply-To: X-Drm-Type: Y,confirm X-Msg-Generator: Mail X-Msg-Type: PERSONAL X-Reply-Demand: N Message-ID: <20180326141717epcms5p4064a0fd4f594b2ff434f9b05cd1ea5ad@epcms5p4> Date: Mon, 26 Mar 2018 19:47:17 +0530 X-CMS-MailID: 20180326141717epcms5p4064a0fd4f594b2ff434f9b05cd1ea5ad Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="utf-8" X-Sendblock-Type: REQ_APPROVE X-MTR: 20180326141717epcms5p4064a0fd4f594b2ff434f9b05cd1ea5ad CMS-TYPE: 105P X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFmpkl+LIzCtJLcpLzFFi42LZdlhTXfcl/84og/NL2Cwu7k61mLN+DZvF l0nv2C2u/N7PbjHhYRu7RfvHvcwWhx++ZbVoXryezWLFs/tMFj1zmhgtLu+aw2Zxb81/VovD 89tYLO73OVjce7OVyeL/73OsFlv3XmW32LxpKrPF7MY+Rov1Ww+wO4h4NN64weZxua+XyWPn rLvsHgs2lXrsmXiSzWPTp0nsHu/OnWP3ODHjN4vH/rlr2D2W7zTx6NuyitFj/ZarLB5nFhxh 9/i8Sc7j9f5DjAH8Uak2GamJKalFCql5yfkpmXnptkrewfHO8aZmBoa6hpYW5koKeYm5qbZK Lj4Bum6ZOUBfKymUJeaUAoUCEouLlfTtbIryS0tSFTLyi0tslaINDY30DA3M9YyMjPRMTGOt jEyBShJSM3a+usBYcIS1YtrrXcwNjDtZuhg5OSQETCT+fD3C1sXIxSEksJtR4vSsT+xdjBwc vAKCEn93CIPUCAtESNz5NYsZxBYSkJM4fmM3I0RcR+LEvDWMIOVsAloSH1vCQcIiAkESG3b/ YwEZySzwiVXi0sYzjBC7eCVmtD+F2istsX35VrA4p0CgxOTjE6FqRCX+NMDUiEq8PzYfKi4i 0XrvLDOELSjx4OduqLiMxPev/awgyyQEuhkl3k3ezQLhTGGUaHgD020ucf7kfLBuXgFfiU1g HZwcLAKqErP3fYea6iLRfPAFmM0sIC+x/e0cZpDPmAU0Jdbv0ocokZWYemodE4RtK3Fq+RI2 iHI+id7fT5hgntwxD8ZWkjh3cCcbhC0h8aRzJtQqD4m3jzcxTWBUmoUI6llIFs9CWLyAkXkV o2RqQXFuemqxaYFhXmq5XnFibnFpXrpecn7uJkZw8tfy3ME465zPIUYBDkYlHt4ZHDujhFgT y4orcw8xSnAwK4nw8s3fESXEm5JYWZValB9fVJqTWnyI0RQYBBOZpUST84GZKa8k3tDE0sDE zMzc0MDA0kRJnNcx0CVKSCA9sSQ1OzW1ILUIpo+Jg1OqgbH422JH1ejZn7o+XA0vcrtnlnKv L63u9anEfqbVv+MlN5mw2S1/kvL78otfutOL5n+apBFZWdz+SkxD6rZtTPHbyQeCF4XIBavy BD/RnNeY3BDywtNzv1nelgC+H8JJX53k5UuuB6hUyQdv2LRFhqHj77enc24srblWZM2z4pFz ULng2ZN5wUosxRmJhlrMRcWJABz3lagUBAAA DLP-Filter: Pass X-CFilter-Loop: Reflected X-CMS-RootMailID: 20180326100020epcas5p2b50b7541e66dccf4e49db634e5fe6b41 X-RootMTR: 20180326100020epcas5p2b50b7541e66dccf4e49db634e5fe6b41 References: <1522058304-35934-1-git-send-email-maninder1.s@samsung.com> X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: =?utf-8?q?1595993933133123096?= X-GMAIL-MSGID: =?utf-8?q?1596014121223200331?= X-Mailing-List: linux-kernel@vger.kernel.org List-ID: Hi Dmitry, >Every user of stack_depot should filter out irq frames, without that >stack_depot will run out of memory sooner or later. so this is a >change in the right direction. > >Do we need to define empty version of in_irqentry_text? Shouldn't only >filter_irq_stacks be used by kernel code? We thought about this but since we were adding both the APIs filter_irq_stacks & in_irqentry_text in header file so we thought of defining empty definition for both as both the APIs are accessible to the module who is going to include header file. If you think empty definition of in_irqentry_text() is not requited then we will modify & resend the patch. Thanks & Regards, Vaneet Narang