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Tue, 27 Mar 2018 21:31:22 +0900 (KST) Mime-Version: 1.0 Subject: Re: [PATCH v2] mm/page_owner: ignore everything below the IRQ entry point Reply-To: maninder1.s@samsung.com From: Maninder Singh To: Andrew Morton , Vaneet Narang CC: Dmitry Vyukov , Andrey Ryabinin , Alexander Potapenko , Kate Stewart , Thomas Gleixner , Philippe Ombredanne , Greg Kroah-Hartman , 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: <20180326125228.1f40abb9a52f3674b1491aea@linux-foundation.org> X-Drm-Type: Y,confirm X-Msg-Generator: Mail X-Msg-Type: PERSONAL X-Reply-Demand: N Message-ID: <20180327114019epcms5p41dec80bebd551f85f576d90ff144fba8@epcms5p4> Date: Tue, 27 Mar 2018 17:10:19 +0530 X-CMS-MailID: 20180327114019epcms5p41dec80bebd551f85f576d90ff144fba8 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" X-Sendblock-Type: REQ_APPROVE X-MTR: 20180327114019epcms5p41dec80bebd551f85f576d90ff144fba8 CMS-TYPE: 105P X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFvrPJsWRmVeSWpSXmKPExsWy7bCmpu4sy11RBktumVhc3J1qMWf9GjaL L5PesVtc+b2f3WLCwzZ2i/aPe5ktDj98y2rRvHg9m8WKZ/eZLHrmNDFaXN41h83i3pr/rBb3 +xws7r3ZymTx//c5Voute6+yW2zeNJXZ4tDJuYwWsxv7GC3Wbz3A7iDi0XjjBpvH5b5eJo+d s+6yeyzYVOqxZ+JJNo9Nnyaxe7w7d47d48SM3ywe++euYfdYvtPEo2/LKkaP9VuusnicWXCE 3ePzJjmP1/sPMQbwR6XaZKQmpqQWKaTmJeenZOal2yp5B8c7x5uaGRjqGlpamCsp5CXmptoq ufgE6Lpl5gB9raRQlphTChQKSCwuVtK3synKLy1JVcjILy6xVYo2NDTSMzQw1zMyMtIzMY21 MjIFKklIzWjYfJip4DhHRfvK3AbGZRxdjBwcEgImEo2XRbsYuTiEBHYzSlyYdp0FJM4rICjx d4dwFyMnh7BAiETjrWdsILaQgKLEhRlrGEFKhAUMJH5t1QAJswnoSazatYcFxBYRCJXofH6U EWQks8BrVolHx3+zgiQkBHglZrQ/ZYGwpSW2L9/KCGJzCnhL7O7sZ4SIi0r8aYCpEZV4f2w+ VFxEovXeWWYIW1Diwc/dUHEZidWbe1lAlkkINDNKvFjcwgThTGGUWHS8lQ2iylzi/Mn5YN28 Ar4S5491gdksAqoSL6f3QE11kbj79RHYVGYBbYllC18zg3zJLKApsX6XPkSJrMTUU+uYIGxb icM3z7BBlPNJ9P5+wgTz5I55MLaqRMvNDawwD3/++BHqMQ+Jt483MU1gVJqFCOpZSBbPQli8 gJF5FaNkakFxbnpqsWmBYV5quV5xYm5xaV66XnJ+7iZGcOLX8tzBOOuczyFGAQ5GJR7eGRw7 o4RYE8uKK3MPMUpwMCuJ8GYK7ooS4k1JrKxKLcqPLyrNSS0+xGgKDIKJzFKiyfnArJRXEm9o YmlgYmZmbmhgYGmiJM7rGOgSJSSQnliSmp2aWpBaBNPHxMEp1cDYa3ntzhPBFS+m381kvb32 VOgUH4nlk+490r20ITzq0LVlt1mU9SaXHbnG/lP7StCHmH0FjQnSX1ekfY47rO3h9Wry1Ucz ufKUt6p/mBq1oVHL4sjdbU2eW9+fzU+7tzX3o6P7o4UqL7I/9Z/nfzbviPrOky1936dvsuAR 9OpTDO8SS5kebm+9XYmlOCPRUIu5qDgRAKhWf+cSBAAA DLP-Filter: Pass X-CFilter-Loop: Reflected X-CMS-RootMailID: 20180326100020epcas5p2b50b7541e66dccf4e49db634e5fe6b41 X-RootMTR: 20180326100020epcas5p2b50b7541e66dccf4e49db634e5fe6b41 References: <20180326125228.1f40abb9a52f3674b1491aea@linux-foundation.org> <1522058304-35934-1-git-send-email-maninder1.s@samsung.com> <20180326141717epcms5p4064a0fd4f594b2ff434f9b05cd1ea5ad@epcms5p4> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Andrew, >filter_irq_stacks()=C2=A0is=C2=A0too=C2=A0large=C2=A0to=C2=A0be=C2=A0inlin= ed.=0D=0A=C2=A0=0D=0AOk=20we=20are=20thinking=20to=20move=20definations=20i= n=20kernel/stacktrace.c=0D=0Aas=20a=20normal=20global=20function.=0D=0A=C2= =A0=0D=0A=0D=0A>in_irqentry_text()=C2=A0is=C2=A0probably=C2=A0too=C2=A0larg= e=C2=A0to=C2=A0be=C2=A0inlined=C2=A0as=C2=A0well,=C2=A0and=0D=0A>should=C2= =A0return=C2=A0bool.=0D=0A=0D=0AWe=20can=20declare=20it=20as=20static=20fun= citon=20in=20kernel/stacktrace.c=20as=20its=20user=0D=0Ais=20only=20filter_= irq_stacks.=0D=0A=C2=A0=0D=0A>Declarations=C2=A0for=C2=A0__irqentry_text_st= art=C2=A0and=C2=A0friends=C2=A0already=C2=A0exist=C2=A0in=0D=0A>include/asm= -generic/sections.h=C2=A0(and,=C2=A0for=C2=A0some=C2=A0reason,=C2=A0also=C2= =A0in=0D=0A>arch/arm/include/asm/traps.h)=C2=A0and=C2=A0should=C2=A0not=C2= =A0be=C2=A0duplicated=C2=A0in=0D=0A>include/linux/stacktrace.h.=0D=0A=0D=0A= Ok,=20done.=0D=0A=0D=0ASending=20new=20patch=20with=20fixes.=0D=0A=0D=0ATha= nks.=0D=0AManinder=20Singh=0D=0A=0D=0A=0D=0A=0D=0A=C2=A0=0D=0A=C2=A0