* BOUNCE linux-mm@kvack.org: Header field too long (>2048)
@ 2012-03-29 21:12 owner-linux-mm
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From: owner-linux-mm @ 2012-03-29 21:12 UTC (permalink / raw)
To: linux-mm-approval
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Date: Thu, 29 Mar 2012 23:11:31 +0200
From: Uwe =?iso-8859-1?Q?Kleine-K=F6nig?= <u.kleine-koenig@pengutronix.de>
To: linux-kernel@vger.kernel.org, Andrew Morton <akpm@linux-foundation.org>
Cc: Alexey Dobriyan <adobriyan@gmail.com>,
Anatolij Gustschin <agust@denx.de>,
Andreas Koensgen <ajk@comnets.uni-bremen.de>,
Andrew Lunn <andrew@lunn.ch>, Andrew Victor <linux@maxim.org.za>,
Arnd Bergmann <arnd@arndb.de>, Barry Song <baohua.song@csr.com>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Bryan Huntsman <bryanh@codeaurora.org>,
cbe-oss-dev@lists.ozlabs.org,
Christoph Lameter <cl@linux-foundation.org>,
Daniel Walker <dwalker@fifo99.com>,
David Brown <davidb@codeaurora.org>,
David Howells <dhowells@redhat.com>,
"David S. Miller" <davem@davemloft.net>,
David Woodhouse <dwmw2@infradead.org>,
davinci-linux-open-source@linux.davincidsp.com,
Eric Miao <eric.y.miao@gmail.com>,
Fenghua Yu <fenghua.yu@intel.com>,
Grant Likely <grant.likely@secretlab.ca>,
Guenter Roeck <guenter.roeck@ericsson.com>,
Haojian Zhuang <haojian.zhuang@gmail.com>,
Henrique de Moraes Holschuh <ibm-acpi@hmh.eng.br>,
ibm-acpi-devel@lists.sourceforge.net,
Jean-Christophe Plagniol-Villard <plagnioj@jcrosoft.com>,
Jean Delvare <khali@linux-fr.org>,
Jean-Paul Roubelat <jpr@f6fbb.org>, Joerg Reuter <jreuter@yaina.de>,
Josh Boyer <jwboyer@gmail.com>, Kevin Hilman <khilman@ti.com>,
Klaus Kudielka <klaus.kudielka@ieee.org>,
Kukjin Kim <kgene.kim@samsung.com>,
Kumar Gala <galak@kernel.crashing.org>,
Kyungmin Park <kyungmin.park@samsung.com>,
Lennert Buytenhek <kernel@wantstofly.org>,
Linus Walleij <linus.walleij@linaro.org>,
Linus Walleij <linus.walleij@stericsson.com>,
linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org,
linux-hams@vger.kernel.org, linux-ia64@vger.kernel.org,
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linux-mips@linux-mips.org, linux-mm@kvack.org,
linux-mtd@lists.infradead.org, linux-omap@vger.kernel.org,
linuxppc-dev@lists.ozlabs.org, linux-samsung-soc@vger.kernel.org,
lm-sensors@lm-sensors.org,
Lucas De Marchi <lucas.demarchi@profusion.mobi>,
Matthew Garrett <mjg59@srcf.ucam.org>,
Matt Porter <mporter@kernel.crashing.org>,
Mauro Carvalho Chehab <mchehab@infradead.org>,
netdev@vger.kernel.org, Nicolas Ferre <nicolas.ferre@atmel.com>,
Nicolas Pitre <nico@fluxnic.net>, Paul Mackerras <paulus@samba.org>,
platform-driver-x86@vger.kernel.org,
Ralf Baechle <ralf@linux-mips.org>,
Randy Dunlap <rdunlap@xenotime.net>,
Russell King <linux@arm.linux.org.uk>,
Samuel Ortiz <sameo@linux.intel.com>,
Sascha Hauer <kernel@pengutronix.de>, Sekhar Nori <nsekhar@ti.com>,
Shawn Guo <shawn.guo@linaro.org>, Tejun Heo <tj@kernel.org>,
Tomasz Stanislawski <t.stanislaws@samsung.com>,
Tony Lindgren <tony@atomide.com>, Tony Luck <tony.luck@intel.com>,
Yoshinori Sato <ysato@users.sourceforge.jp>
Subject: [PATCH 00/17] mark const init data with __initconst instead of
__initdata
Message-ID: <20120329211131.GA31250@pengutronix.de>
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Hello,
this series fixes a common error to use __initdata to mark const
variables. Most of the time this works well enough to go unnoticed
(though I wonder why the linker doesn't warn about that).
Just try adding something like
int something __initdata;
to one of the patched files and compile to see the error.
While touching these annotations I also corrected the position where it
was wrong to go between the variable name and the =.
Note this series is not compile tested.
Best regards
Uwe
--
Pengutronix e.K. | Uwe Kleine-Ki? 1/2 nig |
Industrial Linux Solutions | http://www.pengutronix.de/ |
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* BOUNCE linux-mm@kvack.org: Header field too long (>2048)
@ 2012-03-30 10:00 owner-linux-mm
0 siblings, 0 replies; 5+ messages in thread
From: owner-linux-mm @ 2012-03-30 10:00 UTC (permalink / raw)
To: linux-mm-approval
>From bcrl@kvack.org Fri Mar 30 06:00:02 2012
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Date: Fri, 30 Mar 2012 11:59:00 +0200
From: Uwe =?iso-8859-1?Q?Kleine-K=F6nig?= <u.kleine-koenig@pengutronix.de>
To: linux-kernel@vger.kernel.org, Andrew Morton <akpm@linux-foundation.org>
Cc: Alexey Dobriyan <adobriyan@gmail.com>,
Anatolij Gustschin <agust@denx.de>,
Andreas Koensgen <ajk@comnets.uni-bremen.de>,
Andrew Lunn <andrew@lunn.ch>, Andrew Victor <linux@maxim.org.za>,
Arnd Bergmann <arnd@arndb.de>, Barry Song <baohua.song@csr.com>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Bryan Huntsman <bryanh@codeaurora.org>,
cbe-oss-dev@lists.ozlabs.org,
Christoph Lameter <cl@linux-foundation.org>,
Daniel Walker <dwalker@fifo99.com>,
David Brown <davidb@codeaurora.org>,
David Howells <dhowells@redhat.com>,
"David S. Miller" <davem@davemloft.net>,
David Woodhouse <dwmw2@infradead.org>,
davinci-linux-open-source@linux.davincidsp.com,
Eric Miao <eric.y.miao@gmail.com>,
Fenghua Yu <fenghua.yu@intel.com>,
Grant Likely <grant.likely@secretlab.ca>,
Guenter Roeck <guenter.roeck@ericsson.com>,
Haojian Zhuang <haojian.zhuang@gmail.com>,
Henrique de Moraes Holschuh <ibm-acpi@hmh.eng.br>,
ibm-acpi-devel@lists.sourceforge.net,
Jean-Christophe Plagniol-Villard <plagnioj@jcrosoft.com>,
Jean Delvare <khali@linux-fr.org>,
Jean-Paul Roubelat <jpr@f6fbb.org>, Joerg Reuter <jreuter@yaina.de>,
Josh Boyer <jwboyer@gmail.com>, Kevin Hilman <khilman@ti.com>,
Klaus Kudielka <klaus.kudielka@ieee.org>,
Kukjin Kim <kgene.kim@samsung.com>,
Kumar Gala <galak@kernel.crashing.org>,
Kyungmin Park <kyungmin.park@samsung.com>,
Lennert Buytenhek <kernel@wantstofly.org>,
Linus Walleij <linus.walleij@linaro.org>,
Linus Walleij <linus.walleij@stericsson.com>,
linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org,
linux-hams@vger.kernel.org, linux-ia64@vger.kernel.org,
linux-ide@vger.kernel.org, linux-media@vger.kernel.org,
linux-mips@linux-mips.org, linux-mm@kvack.org,
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linuxppc-dev@lists.ozlabs.org, linux-samsung-soc@vger.kernel.org,
lm-sensors@lm-sensors.org,
Lucas De Marchi <lucas.demarchi@profusion.mobi>,
Matthew Garrett <mjg59@srcf.ucam.org>,
Matt Porter <mporter@kernel.crashing.org>,
Mauro Carvalho Chehab <mchehab@infradead.org>,
netdev@vger.kernel.org, Nicolas Ferre <nicolas.ferre@atmel.com>,
Nicolas Pitre <nico@fluxnic.net>, Paul Mackerras <paulus@samba.org>,
platform-driver-x86@vger.kernel.org,
Ralf Baechle <ralf@linux-mips.org>,
Randy Dunlap <rdunlap@xenotime.net>,
Russell King <linux@arm.linux.org.uk>,
Samuel Ortiz <sameo@linux.intel.com>,
Sascha Hauer <kernel@pengutronix.de>, Sekhar Nori <nsekhar@ti.com>,
Shawn Guo <shawn.guo@linaro.org>, Tejun Heo <tj@kernel.org>,
Tomasz Stanislawski <t.stanislaws@samsung.com>,
Tony Lindgren <tony@atomide.com>, Tony Luck <tony.luck@intel.com>,
Yoshinori Sato <ysato@users.sourceforge.jp>
Subject: Re: [PATCH 00/17] mark const init data with __initconst instead of
__initdata
Message-ID: <20120330095859.GT15647@pengutronix.de>
References: <20120329211131.GA31250@pengutronix.de>
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On Thu, Mar 29, 2012 at 11:11:31PM +0200, Uwe Kleine-Ki? 1/2 nig wrote:
> Hello,
>
> this series fixes a common error to use __initdata to mark const
> variables. Most of the time this works well enough to go unnoticed
> (though I wonder why the linker doesn't warn about that).
> Just try adding something like
>
> int something __initdata;
>
> to one of the patched files and compile to see the error.
>
> While touching these annotations I also corrected the position where it
> was wrong to go between the variable name and the =.
>
> Note this series is not compile tested.
After a question by Shawn Guo I noticed that my command to do the changes
was to lax and changed things that must not be changed (at least not
with further care). Affected are lines like:
static const char *at91_dt_board_compat[] __initconst = {
While at91_dt_board_compat[0] is const, at91_dt_board_compat is not.
I will send a fixed series later today.
Best regards
Uwe
--
Pengutronix e.K. | Uwe Kleine-Ki? 1/2 nig |
Industrial Linux Solutions | http://www.pengutronix.de/ |
--
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^ permalink raw reply [flat|nested] 5+ messages in thread
* BOUNCE linux-mm@kvack.org: Header field too long (>2048)
@ 2012-03-30 20:04 owner-linux-mm
0 siblings, 0 replies; 5+ messages in thread
From: owner-linux-mm @ 2012-03-30 20:04 UTC (permalink / raw)
To: linux-mm-approval
>From bcrl@kvack.org Fri Mar 30 16:04:58 2012
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Date: Fri, 30 Mar 2012 22:03:58 +0200
From: Uwe =?iso-8859-1?Q?Kleine-K=F6nig?= <u.kleine-koenig@pengutronix.de>
To: linux-kernel@vger.kernel.org, Andrew Morton <akpm@linux-foundation.org>
Cc: Alexey Dobriyan <adobriyan@gmail.com>,
Anatolij Gustschin <agust@denx.de>,
Andreas Koensgen <ajk@comnets.uni-bremen.de>,
Andrew Lunn <andrew@lunn.ch>, Andrew Victor <linux@maxim.org.za>,
Arnd Bergmann <arnd@arndb.de>, Barry Song <baohua.song@csr.com>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Bryan Huntsman <bryanh@codeaurora.org>,
cbe-oss-dev@lists.ozlabs.org,
Christoph Lameter <cl@linux-foundation.org>,
Daniel Walker <dwalker@fifo99.com>,
David Brown <davidb@codeaurora.org>,
David Howells <dhowells@redhat.com>,
"David S. Miller" <davem@davemloft.net>,
David Woodhouse <dwmw2@infradead.org>,
davinci-linux-open-source@linux.davincidsp.com,
Eric Miao <eric.y.miao@gmail.com>,
Fenghua Yu <fenghua.yu@intel.com>,
Grant Likely <grant.likely@secretlab.ca>,
Guenter Roeck <guenter.roeck@ericsson.com>,
Haojian Zhuang <haojian.zhuang@gmail.com>,
Henrique de Moraes Holschuh <ibm-acpi@hmh.eng.br>,
ibm-acpi-devel@lists.sourceforge.net,
Jean-Christophe Plagniol-Villard <plagnioj@jcrosoft.com>,
Jean Delvare <khali@linux-fr.org>,
Jean-Paul Roubelat <jpr@f6fbb.org>, Joerg Reuter <jreuter@yaina.de>,
Josh Boyer <jwboyer@gmail.com>, Kevin Hilman <khilman@ti.com>,
Klaus Kudielka <klaus.kudielka@ieee.org>,
Kukjin Kim <kgene.kim@samsung.com>,
Kumar Gala <galak@kernel.crashing.org>,
Kyungmin Park <kyungmin.park@samsung.com>,
Lennert Buytenhek <kernel@wantstofly.org>,
Linus Walleij <linus.walleij@linaro.org>,
Linus Walleij <linus.walleij@stericsson.com>,
linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org,
linux-hams@vger.kernel.org, linux-ia64@vger.kernel.org,
linux-ide@vger.kernel.org, linux-media@vger.kernel.org,
linux-mips@linux-mips.org, linux-mm@kvack.org,
linux-mtd@lists.infradead.org, linux-omap@vger.kernel.org,
linuxppc-dev@lists.ozlabs.org, linux-samsung-soc@vger.kernel.org,
lm-sensors@lm-sensors.org,
Lucas De Marchi <lucas.demarchi@profusion.mobi>,
Matthew Garrett <mjg59@srcf.ucam.org>,
Matt Porter <mporter@kernel.crashing.org>,
Mauro Carvalho Chehab <mchehab@infradead.org>,
netdev@vger.kernel.org, Nicolas Ferre <nicolas.ferre@atmel.com>,
Nicolas Pitre <nico@fluxnic.net>, Paul Mackerras <paulus@samba.org>,
platform-driver-x86@vger.kernel.org,
Ralf Baechle <ralf@linux-mips.org>,
Randy Dunlap <rdunlap@xenotime.net>,
Russell King <linux@arm.linux.org.uk>,
Samuel Ortiz <sameo@linux.intel.com>,
Sascha Hauer <kernel@pengutronix.de>, Sekhar Nori <nsekhar@ti.com>,
Shawn Guo <shawn.guo@linaro.org>, Tejun Heo <tj@kernel.org>,
Tomasz Stanislawski <t.stanislaws@samsung.com>,
Tony Lindgren <tony@atomide.com>, Tony Luck <tony.luck@intel.com>,
Yoshinori Sato <ysato@users.sourceforge.jp>
Subject: [PATCH v2 00/15] mark const init data with __initconst instead of
__initdata
Message-ID: <20120330200358.GV15647@pengutronix.de>
References: <20120329211131.GA31250@pengutronix.de>
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Hello,
On Thu, Mar 29, 2012 at 11:11:31PM +0200, Uwe Kleine-Ki? 1/2 nig wrote:
> this series fixes a common error to use __initdata to mark const
> variables. Most of the time this works well enough to go unnoticed
> (though I wonder why the linker doesn't warn about that).
> Just try adding something like
>
> int something __initdata;
>
> to one of the patched files and compile to see the error.
>
> While touching these annotations I also corrected the position where it
> was wrong to go between the variable name and the =.
>
> Note this series is not compile tested.
I now dropped the wrong annotations. So two patches became obsolete
(mtd and percpu). Note that I also dropped fixing the position of
__initdata if changing it to __initconst was wrong. (I think if
__initdata is placed before the variable name it doesn't have any
effect.)
I didn't promote the Acks I got because all acked changes changed in v2.
For the details changed in each patch see the changelogs in the
respective patch mails that I follow up to this mail.
Thanks
Uwe
--
Pengutronix e.K. | Uwe Kleine-Ki? 1/2 nig |
Industrial Linux Solutions | http://www.pengutronix.de/ |
--
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@ 2013-03-05 14:57 owner-linux-mm
0 siblings, 0 replies; 5+ messages in thread
From: owner-linux-mm @ 2013-03-05 14:57 UTC (permalink / raw)
To: linux-mm-approval
>From bcrl@kvack.org Tue Mar 5 09:57:21 2013
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From: Jiang Liu <liuj97@gmail.com>
To: Andrew Morton <akpm@linux-foundation.org>,
David Rientjes <rientjes@google.com>
Cc: Jiang Liu <jiang.liu@huawei.com>,
Wen Congyang <wency@cn.fujitsu.com>,
Maciej Rutecki <maciej.rutecki@gmail.com>,
Chris Clayton <chris2553@googlemail.com>,
"Rafael J . Wysocki" <rjw@sisk.pl>,
Mel Gorman <mgorman@suse.de>,
Minchan Kim <minchan@kernel.org>,
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
Michal Hocko <mhocko@suse.cz>,
Jianguo Wu <wujianguo@huawei.com>,
Anatolij Gustschin <agust@denx.de>,
Aurelien Jacquiot <a-jacquiot@ti.com>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Catalin Marinas <catalin.marinas@arm.com>,
Chen Liqin <liqin.chen@sunplusct.com>,
Chris Metcalf <cmetcalf@tilera.com>,
Chris Zankel <chris@zankel.net>,
David Howells <dhowells@redhat.com>,
"David S. Miller" <davem@davemloft.net>,
Eric Biederman <ebiederm@xmission.com>,
Fenghua Yu <fenghua.yu@intel.com>,
Geert Uytterhoeven <geert@linux-m68k.org>,
Guan Xuetao <gxt@mprc.pku.edu.cn>,
Haavard Skinnemoen <hskinnemoen@gmail.com>,
Hans-Christian Egtvedt <egtvedt@samfundet.no>,
Heiko Carstens <heiko.carstens@de.ibm.com>,
Helge Deller <deller@gmx.de>,
Hirokazu Takata <takata@linux-m32r.org>,
"H. Peter Anvin" <hpa@zytor.com>,
Ingo Molnar <mingo@redhat.com>,
Ivan Kokshaysky <ink@jurassic.park.msu.ru>,
"James E.J. Bottomley" <jejb@parisc-linux.org>,
Jeff Dike <jdike@addtoit.com>,
Jeremy Fitzhardinge <jeremy@goop.org>,
Jonas Bonn <jonas@southpole.se>,
Koichi Yasutake <yasutake.koichi@jp.panasonic.com>,
Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
Lennox Wu <lennox.wu@gmail.com>,
Mark Salter <msalter@redhat.com>,
Martin Schwidefsky <schwidefsky@de.ibm.com>,
Matt Turner <mattst88@gmail.com>,
Max Filippov <jcmvbkbc@gmail.com>,
"Michael S. Tsirkin" <mst@redhat.com>,
Michal Simek <monstr@monstr.eu>,
Michel Lespinasse <walken@google.com>,
Mikael Starvik <starvik@axis.com>,
Mike Frysinger <vapier@gentoo.org>,
Paul Mackerras <paulus@samba.org>,
Paul Mundt <lethal@linux-sh.org>,
Ralf Baechle <ralf@linux-mips.org>,
Richard Henderson <rth@twiddle.net>,
Rik van Riel <riel@redhat.com>,
Russell King <linux@arm.linux.org.uk>,
Rusty Russell <rusty@rustcorp.com.au>,
Sam Ravnborg <sam@ravnborg.org>,
Tang Chen <tangchen@cn.fujitsu.com>,
Thomas Gleixner <tglx@linutronix.de>,
Tony Luck <tony.luck@intel.com>,
Will Deacon <will.deacon@arm.com>,
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Subject: [RFC PATCH v1 00/33] accurately calculate pages managed by buddy system
Date: Tue, 5 Mar 2013 22:54:43 +0800
Message-Id: <1362495317-32682-1-git-send-email-jiang.liu@huawei.com>
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The original goal of this patchset is to fix the bug reported by
https://bugzilla.kernel.org/show_bug.cgi?id=53501
Now it has also been expanded to reduce common code used by memory
initializion. In total it has reduced about 550 lines of code.
Patch 1:
Extract common help functions from free_init_mem() and
free_initrd_mem() on different architectures.
Patch 2-27:
Use help functions to simplify free_init_mem() and
free_initrd_mem() on different architectures. This has reduced
about 500 lines of code.
Patch 28:
Introduce common help function to free highmem pages when
initializing memory subsystem.
Patch 29-32:
Adjust totalhigh_pages, totalram_pages and zone->managed_pages
altogether when reserving/unreserving pages.
Patch 33:
Change /sys/.../node/nodex/meminfo to report available pages
within the node as "MemTotal".
We have only tested these patchset on x86 platforms, and have done basic
compliation tests using cross-compilers from ftp.kernel.org. That means
some code may not pass compilation on some architectures. So any help
to test this patchset are welcomed!
Jiang Liu (33):
mm: introduce common help functions to deal with reserved/managed
pages
mm/alpha: use common help functions to free reserved pages
mm/ARM: use common help functions to free reserved pages
mm/avr32: use common help functions to free reserved pages
mm/blackfin: use common help functions to free reserved pages
mm/c6x: use common help functions to free reserved pages
mm/cris: use common help functions to free reserved pages
mm/FRV: use common help functions to free reserved pages
mm/h8300: use common help functions to free reserved pages
mm/IA64: use common help functions to free reserved pages
mm/m32r: use common help functions to free reserved pages
mm/m68k: use common help functions to free reserved pages
mm/microblaze: use common help functions to free reserved pages
mm/MIPS: use common help functions to free reserved pages
mm/mn10300: use common help functions to free reserved pages
mm/openrisc: use common help functions to free reserved pages
mm/parisc: use common help functions to free reserved pages
mm/ppc: use common help functions to free reserved pages
mm/s390: use common help functions to free reserved pages
mm/score: use common help functions to free reserved pages
mm/SH: use common help functions to free reserved pages
mm/SPARC: use common help functions to free reserved pages
mm/um: use common help functions to free reserved pages
mm/unicore32: use common help functions to free reserved pages
mm/x86: use common help functions to free reserved pages
mm/xtensa: use common help functions to free reserved pages
mm,kexec: use common help functions to free reserved pages
mm: introduce free_highmem_page() helper to free highmem pages inti
buddy system
mm: accurately calculate zone->managed_pages for highmem zones
mm: use a dedicated lock to protect totalram_pages and
zone->managed_pages
mm: avoid using __free_pages_bootmem() at runtime
mm: correctly update zone->mamaged_pages
mm: report available pages as "MemTotal" for each NUMA node
arch/alpha/kernel/sys_nautilus.c | 5 +-
arch/alpha/mm/init.c | 24 ++-------
arch/alpha/mm/numa.c | 3 +-
arch/arm/mm/init.c | 46 ++++++-----------
arch/arm64/mm/init.c | 26 +---------
arch/avr32/mm/init.c | 24 +--------
arch/blackfin/mm/init.c | 20 +-------
arch/c6x/mm/init.c | 30 +----------
arch/cris/mm/init.c | 16 +-----
arch/frv/mm/init.c | 32 ++----------
arch/h8300/mm/init.c | 28 +----------
arch/ia64/mm/init.c | 23 ++-------
arch/m32r/mm/init.c | 26 ++--------
arch/m68k/mm/init.c | 24 +--------
arch/microblaze/include/asm/setup.h | 1 -
arch/microblaze/mm/init.c | 33 ++----------
arch/mips/mm/init.c | 36 ++++----------
arch/mips/sgi-ip27/ip27-memory.c | 4 +-
arch/mn10300/mm/init.c | 23 +--------
arch/openrisc/mm/init.c | 27 ++--------
arch/parisc/mm/init.c | 24 ++-------
arch/powerpc/kernel/crash_dump.c | 5 +-
arch/powerpc/kernel/fadump.c | 5 +-
arch/powerpc/kernel/kvm.c | 7 +--
arch/powerpc/mm/mem.c | 34 ++-----------
arch/powerpc/platforms/512x/mpc512x_shared.c | 5 +-
arch/s390/mm/init.c | 35 +++----------
arch/score/mm/init.c | 33 ++----------
arch/sh/mm/init.c | 26 ++--------
arch/sparc/kernel/leon_smp.c | 15 ++----
arch/sparc/mm/init_32.c | 50 +++----------------
arch/sparc/mm/init_64.c | 25 ++--------
arch/tile/mm/init.c | 4 +-
arch/um/kernel/mem.c | 25 ++--------
arch/unicore32/mm/init.c | 26 +---------
arch/x86/mm/init.c | 5 +-
arch/x86/mm/init_32.c | 10 +---
arch/x86/mm/init_64.c | 18 +------
arch/xtensa/mm/init.c | 21 ++------
drivers/virtio/virtio_balloon.c | 8 +--
drivers/xen/balloon.c | 19 ++-----
include/linux/mm.h | 36 ++++++++++++++
include/linux/mmzone.h | 14 ++++--
kernel/kexec.c | 8 +--
mm/bootmem.c | 16 ++----
mm/hugetlb.c | 2 +-
mm/memory_hotplug.c | 31 ++----------
mm/nobootmem.c | 14 ++----
mm/page_alloc.c | 69 ++++++++++++++++++++++----
49 files changed, 248 insertions(+), 793 deletions(-)
--
1.7.9.5
--
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* BOUNCE linux-mm@kvack.org: Header field too long (>2048)
@ 2013-03-05 14:58 owner-linux-mm
0 siblings, 0 replies; 5+ messages in thread
From: owner-linux-mm @ 2013-03-05 14:58 UTC (permalink / raw)
To: linux-mm-approval
>From bcrl@kvack.org Tue Mar 5 09:58:04 2013
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Tue, 05 Mar 2013 06:58:01 -0800 (PST)
From: Jiang Liu <liuj97@gmail.com>
To: Andrew Morton <akpm@linux-foundation.org>,
David Rientjes <rientjes@google.com>
Cc: Jiang Liu <jiang.liu@huawei.com>,
Wen Congyang <wency@cn.fujitsu.com>,
Maciej Rutecki <maciej.rutecki@gmail.com>,
Chris Clayton <chris2553@googlemail.com>,
"Rafael J . Wysocki" <rjw@sisk.pl>,
Mel Gorman <mgorman@suse.de>,
Minchan Kim <minchan@kernel.org>,
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
Michal Hocko <mhocko@suse.cz>,
Jianguo Wu <wujianguo@huawei.com>,
Anatolij Gustschin <agust@denx.de>,
Aurelien Jacquiot <a-jacquiot@ti.com>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Catalin Marinas <catalin.marinas@arm.com>,
Chen Liqin <liqin.chen@sunplusct.com>,
Chris Metcalf <cmetcalf@tilera.com>,
Chris Zankel <chris@zankel.net>,
David Howells <dhowells@redhat.com>,
"David S. Miller" <davem@davemloft.net>,
Eric Biederman <ebiederm@xmission.com>,
Fenghua Yu <fenghua.yu@intel.com>,
Geert Uytterhoeven <geert@linux-m68k.org>,
Guan Xuetao <gxt@mprc.pku.edu.cn>,
Haavard Skinnemoen <hskinnemoen@gmail.com>,
Hans-Christian Egtvedt <egtvedt@samfundet.no>,
Heiko Carstens <heiko.carstens@de.ibm.com>,
Helge Deller <deller@gmx.de>,
Hirokazu Takata <takata@linux-m32r.org>,
"H. Peter Anvin" <hpa@zytor.com>,
Ingo Molnar <mingo@redhat.com>,
Ivan Kokshaysky <ink@jurassic.park.msu.ru>,
"James E.J. Bottomley" <jejb@parisc-linux.org>,
Jeff Dike <jdike@addtoit.com>,
Jeremy Fitzhardinge <jeremy@goop.org>,
Jonas Bonn <jonas@southpole.se>,
Koichi Yasutake <yasutake.koichi@jp.panasonic.com>,
Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
Lennox Wu <lennox.wu@gmail.com>,
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Martin Schwidefsky <schwidefsky@de.ibm.com>,
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Subject: [RFC PATCH v1 01/33] mm: introduce common help functions to deal with reserved/managed pages
Date: Tue, 5 Mar 2013 22:54:44 +0800
Message-Id: <1362495317-32682-2-git-send-email-jiang.liu@huawei.com>
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Code to deal with reserved/managed pages are duplicated by many
architectures, so introduce common help functions to reduce duplicated
code. These common help functions will also be used to concentrate code
to modify totalram_pages and zone->managed_pages, which makes the code
much more clear.
Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
---
include/linux/mm.h | 37 +++++++++++++++++++++++++++++++++++++
mm/page_alloc.c | 20 ++++++++++++++++++++
2 files changed, 57 insertions(+)
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 7acc9dc..881461c 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -1295,6 +1295,43 @@ extern void free_area_init_node(int nid, unsigned long * zones_size,
unsigned long zone_start_pfn, unsigned long *zholes_size);
extern void free_initmem(void);
+/* Help functions to deal with reserved/managed pages. */
+extern unsigned long free_reserved_area(unsigned long start, unsigned long end,
+ int poison, char *s);
+
+static inline void adjust_managed_page_count(struct page *page, long count)
+{
+ totalram_pages += count;
+}
+
+static inline void __free_reserved_page(struct page *page)
+{
+ ClearPageReserved(page);
+ init_page_count(page);
+ __free_page(page);
+}
+
+static inline void free_reserved_page(struct page *page)
+{
+ __free_reserved_page(page);
+ adjust_managed_page_count(page, 1);
+}
+
+static inline void mark_page_reserved(struct page *page)
+{
+ SetPageReserved(page);
+ adjust_managed_page_count(page, -1);
+}
+
+static inline void free_initmem_default(int poison)
+{
+ extern char __init_begin[], __init_end[];
+
+ free_reserved_area(PAGE_ALIGN((unsigned long)&__init_begin) ,
+ ((unsigned long)&__init_end) & PAGE_MASK,
+ poison, "unused kernel");
+}
+
#ifdef CONFIG_HAVE_MEMBLOCK_NODE_MAP
/*
* With CONFIG_HAVE_MEMBLOCK_NODE_MAP set, an architecture may initialise its
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 8fcced7..0fadb09 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -5113,6 +5113,26 @@ early_param("movablecore", cmdline_parse_movablecore);
#endif /* CONFIG_HAVE_MEMBLOCK_NODE_MAP */
+unsigned long free_reserved_area(unsigned long start, unsigned long end,
+ int poison, char *s)
+{
+ unsigned long pages, pos;
+
+ pos = start = PAGE_ALIGN(start);
+ end &= PAGE_MASK;
+ for (pages = 0; pos < end; pos += PAGE_SIZE, pages++) {
+ if (poison)
+ memset((void *)pos, poison, PAGE_SIZE);
+ free_reserved_page(virt_to_page(pos));
+ }
+
+ if (pages && s)
+ pr_info("Freeing %s memory: %ldK (%lx - %lx)\n",
+ s, pages << (PAGE_SHIFT - 10), start, end);
+
+ return pages;
+}
+
/**
* set_dma_reserve - set the specified number of pages reserved in the first zone
* @new_dma_reserve: The number of pages to mark reserved
--
1.7.9.5
--
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