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<title>lwn.git/arch/sparc/include/asm/Kbuild, branch doc/asciidoc</title>
<subtitle>Linux kernel documentation tree maintained by Jonathan Corbet</subtitle>
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<updated>2015-07-17T23:39:53+00:00</updated>
<entry>
<title>mm: clean up per architecture MM hook header files</title>
<updated>2015-07-17T23:39:53+00:00</updated>
<author>
<name>Laurent Dufour</name>
<email>ldufour@linux.vnet.ibm.com</email>
</author>
<published>2015-07-17T23:23:58+00:00</published>
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<id>urn:sha1:f2abeef9fd6f03ebf417539ed099828a56733098</id>
<content type='text'>
Commit 2ae416b142b6 ("mm: new mm hook framework") introduced an empty
header file (mm-arch-hooks.h) for every architecture, even those which
doesn't need to define mm hooks.

As suggested by Geert Uytterhoeven, this could be cleaned through the use
of a generic header file included via each per architecture
asm/include/Kbuild file.

The PowerPC architecture is not impacted here since this architecture has
to defined the arch_remap MM hook.

Signed-off-by: Laurent Dufour &lt;ldufour@linux.vnet.ibm.com&gt;
Suggested-by: Geert Uytterhoeven &lt;geert@linux-m68k.org&gt;
Acked-by: Geert Uytterhoeven &lt;geert@linux-m68k.org&gt;
Acked-by: Vineet Gupta &lt;vgupta@synopsys.com&gt;
Cc: Oleg Nesterov &lt;oleg@redhat.com&gt;
Signed-off-by: Andrew Morton &lt;akpm@linux-foundation.org&gt;
Signed-off-by: Linus Torvalds &lt;torvalds@linux-foundation.org&gt;
</content>
</entry>
<entry>
<title>remove scatterlist.h generation from arch Kbuild files</title>
<updated>2015-05-19T15:14:34+00:00</updated>
<author>
<name>Christoph Hellwig</name>
<email>hch@lst.de</email>
</author>
<published>2015-05-19T06:36:29+00:00</published>
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<id>urn:sha1:c546d5db75b452737e554bb9c33dedb46847c4fd</id>
<content type='text'>
Signed-off-by: Christoph Hellwig &lt;hch@lst.de&gt;
Reported-by: Geert Uytterhoeven &lt;geert@linux-m68k.org&gt;
Signed-off-by: Jens Axboe &lt;axboe@fb.com&gt;
</content>
</entry>
<entry>
<title>net, lib: kill arch_fast_hash library bits</title>
<updated>2014-12-10T20:17:46+00:00</updated>
<author>
<name>Daniel Borkmann</name>
<email>dborkman@redhat.com</email>
</author>
<published>2014-12-10T15:33:12+00:00</published>
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<id>urn:sha1:0cb6c969ed9de43687abdfc63714b6fe4385d2fc</id>
<content type='text'>
As there are now no remaining users of arch_fast_hash(), lets kill
it entirely.

This basically reverts commit 71ae8aac3e19 ("lib: introduce arch
optimized hash library") and follow-up work, that is f.e., commit
237217546d44 ("lib: hash: follow-up fixups for arch hash"),
commit e3fec2f74f7f ("lib: Add missing arch generic-y entries for
asm-generic/hash.h") and last but not least commit 6a02652df511
("perf tools: Fix include for non x86 architectures").

Cc: Francesco Fusco &lt;fusco@ntop.org&gt;
Cc: Thomas Graf &lt;tgraf@suug.ch&gt;
Cc: Arnaldo Carvalho de Melo &lt;acme@redhat.com&gt;
Signed-off-by: Daniel Borkmann &lt;dborkman@redhat.com&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
</content>
</entry>
<entry>
<title>irq_work: Introduce arch_irq_work_has_interrupt()</title>
<updated>2014-09-13T16:38:07+00:00</updated>
<author>
<name>Peter Zijlstra</name>
<email>peterz@infradead.org</email>
</author>
<published>2014-09-06T13:43:02+00:00</published>
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<id>urn:sha1:c5c38ef3d70377dc504a6a3f611a3ec814bc757b</id>
<content type='text'>
The nohz full code needs irq work to trigger its own interrupt so that
the subsystem can work even when the tick is stopped.

Lets introduce arch_irq_work_has_interrupt() that archs can override to
tell about their support for this ability.

Signed-off-by: Peter Zijlstra &lt;peterz@infradead.org&gt;
Cc: Ingo Molnar &lt;mingo@kernel.org&gt;
Cc: Paul E. McKenney &lt;paulmck@linux.vnet.ibm.com&gt;
Cc: Peter Zijlstra &lt;peterz@infradead.org&gt;
Cc: Thomas Gleixner &lt;tglx@linutronix.de&gt;
Signed-off-by: Frederic Weisbecker &lt;fweisbec@gmail.com&gt;
</content>
</entry>
<entry>
<title>lib/scatterlist: make ARCH_HAS_SG_CHAIN an actual Kconfig</title>
<updated>2014-08-08T22:57:26+00:00</updated>
<author>
<name>Laura Abbott</name>
<email>lauraa@codeaurora.org</email>
</author>
<published>2014-08-08T21:23:25+00:00</published>
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<id>urn:sha1:308c09f17da4adc53935115dbeb5bce4f067d8f9</id>
<content type='text'>
Rather than have architectures #define ARCH_HAS_SG_CHAIN in an
architecture specific scatterlist.h, make it a proper Kconfig option and
use that instead.  At same time, remove the header files are are now
mostly useless and just include asm-generic/scatterlist.h.

[sfr@canb.auug.org.au: powerpc files now need asm/dma.h]
Signed-off-by: Laura Abbott &lt;lauraa@codeaurora.org&gt;
Acked-by: Thomas Gleixner &lt;tglx@linutronix.de&gt;			[x86]
Acked-by: Benjamin Herrenschmidt &lt;benh@kernel.crashing.org&gt;	[powerpc]
Acked-by: Heiko Carstens &lt;heiko.carstens@de.ibm.com&gt;
Cc: Russell King &lt;linux@arm.linux.org.uk&gt;
Cc: Tony Luck &lt;tony.luck@intel.com&gt;
Cc: Fenghua Yu &lt;fenghua.yu@intel.com&gt;
Cc: Paul Mackerras &lt;paulus@samba.org&gt;
Cc: Ingo Molnar &lt;mingo@redhat.com&gt;
Cc: "H. Peter Anvin" &lt;hpa@zytor.com&gt;
Cc: "James E.J. Bottomley" &lt;JBottomley@parallels.com&gt;
Cc: Martin Schwidefsky &lt;schwidefsky@de.ibm.com&gt;
Signed-off-by: Stephen Rothwell &lt;sfr@canb.auug.org.au&gt;
Signed-off-by: Andrew Morton &lt;akpm@linux-foundation.org&gt;
Signed-off-by: Linus Torvalds &lt;torvalds@linux-foundation.org&gt;
</content>
</entry>
<entry>
<title>locking/mcs: Allow architecture specific asm files to be used for contended case</title>
<updated>2014-02-09T20:18:52+00:00</updated>
<author>
<name>Tim Chen</name>
<email>tim.c.chen@linux.intel.com</email>
</author>
<published>2014-01-21T23:36:22+00:00</published>
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<id>urn:sha1:ddf1d169c0a489d498c1799a7043904a43b0c159</id>
<content type='text'>
This patch allows each architecture to add its specific assembly optimized
arch_mcs_spin_lock_contended and arch_mcs_spinlock_uncontended for
MCS lock and unlock functions.

Signed-off-by: Tim Chen &lt;tim.c.chen@linux.intel.com&gt;
Cc: Scott J Norton &lt;scott.norton@hp.com&gt;
Cc: Raghavendra K T &lt;raghavendra.kt@linux.vnet.ibm.com&gt;
Cc: AswinChandramouleeswaran &lt;aswin@hp.com&gt;
Cc: George Spelvin &lt;linux@horizon.com&gt;
Cc: Rik vanRiel &lt;riel@redhat.com&gt;
Cc: Andrea Arcangeli &lt;aarcange@redhat.com&gt;
Cc: MichelLespinasse &lt;walken@google.com&gt;
Cc: Peter Hurley &lt;peter@hurleysoftware.com&gt;
Cc: Andi Kleen &lt;andi@firstfloor.org&gt;
Cc: Alex Shi &lt;alex.shi@linaro.org&gt;
Cc: Dave Hansen &lt;dave.hansen@intel.com&gt;
Cc: Tim Chen &lt;tim.c.chen@linux.intel.com&gt;
Cc: Arnd Bergmann &lt;arnd@arndb.de&gt;
Cc: "Figo.zhang" &lt;figo1802@gmail.com&gt;
Cc: "Paul E.McKenney" &lt;paulmck@linux.vnet.ibm.com&gt;
Cc: "H. Peter Anvin" &lt;hpa@zytor.com&gt;
Cc: Davidlohr Bueso &lt;davidlohr.bueso@hp.com&gt;
Cc: Waiman Long &lt;waiman.long@hp.com&gt;
Cc: Ingo Molnar &lt;mingo@elte.hu&gt;
Cc: Will Deacon &lt;will.deacon@arm.com&gt;
Cc: Andrew Morton &lt;akpm@linux-foundation.org&gt;
Cc: Linus Torvalds &lt;torvalds@linux-foundation.org&gt;
Cc: Matthew R Wilcox &lt;matthew.r.wilcox@intel.com&gt;
Signed-off-by: Peter Zijlstra &lt;peterz@infradead.org&gt;
Link: http://lkml.kernel.org/r/1390347382.3138.67.camel@schen9-DESK
Signed-off-by: Ingo Molnar &lt;mingo@kernel.org&gt;
</content>
</entry>
<entry>
<title>locking/mcs: Order the header files in Kbuild of each architecture in alphabetical order</title>
<updated>2014-02-09T20:17:50+00:00</updated>
<author>
<name>Tim Chen</name>
<email>tim.c.chen@linux.intel.com</email>
</author>
<published>2014-01-21T23:36:16+00:00</published>
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<id>urn:sha1:b119fa61d440fe0f5af504299ad506637585a8ca</id>
<content type='text'>
We perform a clean up of the Kbuid files in each architecture.
We order the files in each Kbuild in alphabetical order
by running the below script.

for i in arch/*/include/asm/Kbuild
do
        cat $i | gawk '/^generic-y/ {
                i = 3;
                do {
                        for (; i &lt;= NF; i++) {
                                if ($i == "\\") {
                                        getline;
                                        i = 1;
                                        continue;
                                }
                                if ($i != "")
                                        hdr[$i] = $i;
                        }
                        break;
                } while (1);
                next;
        }
        // {
                print $0;
        }
        END {
                n = asort(hdr);
                for (i = 1; i &lt;= n; i++)
                        print "generic-y += " hdr[i];
        }' &gt; ${i}.sorted;
        mv ${i}.sorted $i;
done

Signed-off-by: Tim Chen &lt;tim.c.chen@linux.intel.com&gt;
Cc: Arnd Bergmann &lt;arnd@arndb.de&gt;
Cc: Matthew R Wilcox &lt;matthew.r.wilcox@intel.com&gt;
Cc: AswinChandramouleeswaran &lt;aswin@hp.com&gt;
Cc: Dave Hansen &lt;dave.hansen@intel.com&gt;
Cc: "Paul E.McKenney" &lt;paulmck@linux.vnet.ibm.com&gt;
Cc: Scott J Norton &lt;scott.norton@hp.com&gt;
Cc: Will Deacon &lt;will.deacon@arm.com&gt;
Cc: "Figo.zhang" &lt;figo1802@gmail.com&gt;
Cc: Linus Torvalds &lt;torvalds@linux-foundation.org&gt;
Cc: Rik van Riel &lt;riel@redhat.com&gt;
Cc: Waiman Long &lt;waiman.long@hp.com&gt;
Cc: Peter Hurley &lt;peter@hurleysoftware.com&gt;
Cc: Andrea Arcangeli &lt;aarcange@redhat.com&gt;
Cc: Tim Chen &lt;tim.c.chen@linux.intel.com&gt;
Cc: Alex Shi &lt;alex.shi@linaro.org&gt;
Cc: Raghavendra K T &lt;raghavendra.kt@linux.vnet.ibm.com&gt;
Cc: Andi Kleen &lt;andi@firstfloor.org&gt;
Cc: George Spelvin &lt;linux@horizon.com&gt;
Cc: MichelLespinasse &lt;walken@google.com&gt;
Cc: Ingo Molnar &lt;mingo@elte.hu&gt;
Cc: "H. Peter Anvin" &lt;hpa@zytor.com&gt;
Cc: Davidlohr Bueso &lt;davidlohr.bueso@hp.com&gt;
Cc: Andrew Morton &lt;akpm@linux-foundation.org&gt;
Signed-off-by: Peter Zijlstra &lt;peterz@infradead.org&gt;
[ Fixed build bug. ]
Signed-off-by: Ingo Molnar &lt;mingo@kernel.org&gt;
</content>
</entry>
<entry>
<title>lib: Add missing arch generic-y entries for asm-generic/hash.h</title>
<updated>2013-12-18T02:26:19+00:00</updated>
<author>
<name>David S. Miller</name>
<email>davem@davemloft.net</email>
</author>
<published>2013-12-18T02:26:19+00:00</published>
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<id>urn:sha1:e3fec2f74f7f90d2149a24243a4d040caabe6f30</id>
<content type='text'>
Reported-by: Stephen Rothwell &lt;sfr@canb.auug.org.au&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
</content>
</entry>
<entry>
<title>sched, arch: Create asm/preempt.h</title>
<updated>2013-09-25T12:07:50+00:00</updated>
<author>
<name>Peter Zijlstra</name>
<email>peterz@infradead.org</email>
</author>
<published>2013-08-14T12:55:40+00:00</published>
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<id>urn:sha1:a787870924dbd6f321661e06d4ec1c7a408c9ccf</id>
<content type='text'>
In order to prepare to per-arch implementations of preempt_count move
the required bits into an asm-generic header and use this for all
archs.

Signed-off-by: Peter Zijlstra &lt;peterz@infradead.org&gt;
Link: http://lkml.kernel.org/n/tip-h5j0c1r3e3fk015m30h8f1zx@git.kernel.org
Signed-off-by: Ingo Molnar &lt;mingo@kernel.org&gt;
</content>
</entry>
<entry>
<title>sparc: Switch to asm-generic/linkage.h</title>
<updated>2013-06-19T09:08:20+00:00</updated>
<author>
<name>Geert Uytterhoeven</name>
<email>geert@linux-m68k.org</email>
</author>
<published>2013-05-07T09:55:55+00:00</published>
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<id>urn:sha1:ccd847b2c101a7e5772d0463ac76f7c18732675a</id>
<content type='text'>
Signed-off-by: Geert Uytterhoeven &lt;geert@linux-m68k.org&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
</content>
</entry>
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