From mboxrd@z Thu Jan 1 00:00:00 1970 From: Richard Weinberger Subject: Re: [PATCH -next 0/3] Add support for fast mremap Date: Sat, 03 Nov 2018 10:15:11 +0100 Message-ID: <6886607.O3ZT5bM3Cy@blindfold> References: <20181103040041.7085-1-joelaf@google.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <20181103040041.7085-1-joelaf@google.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-snps-arc" Errors-To: linux-snps-arc-bounces+gla-linux-snps-arc=m.gmane.org@lists.infradead.org To: Joel Fernandes Cc: Joel Fernandes , linux-mips@linux-mips.org, Rich Felker , linux-sh@vger.kernel.org, Peter Zijlstra , Catalin Marinas , Dave Hansen , Will Deacon , "maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)" , Michal Hocko , linux-mm@kvack.org, lokeshgidra@google.com, sparclinux@vger.kernel.org, linux-riscv@lists.infradead.org, linux-ia64@vge, elfring@users.sourceforge.net, Jonas Bonn , kvmarm@lists.cs.columbia.edu, dancol@google.com, Yoshinori Sato , linux-xtensa@linux-xtensa.org, linux-hexagon@vger.kernel.org, Helge Deller , r.kernel.org@lithops.sigma-star.at, hughd@google.com, "James E.J. Bottomley" , kasan-dev@googlegroups.com List-Id: kvmarm@lists.cs.columbia.edu Sm9lbCwKCkFtIFNhbXN0YWcsIDMuIE5vdmVtYmVyIDIwMTgsIDA1OjAwOjM4IENFVCBzY2hyaWVi IEpvZWwgRmVybmFuZGVzOgo+IEhpLAo+IEhlcmUgaXMgdGhlIGxhdGVzdCAiZmFzdCBtcmVtYXAi IHNlcmllcy4gVGhpcyBqdXN0IGEgcmVwb3N0IHdpdGggS2lyaWxsJ3MKPiBBY2tlZC1ieXMgYWRk ZWQuIEkgd291bGQgbGlrZSB0aGlzIHRvIGJlIGNvbnNpZGVyZWQgZm9yIGxpbnV4IC1uZXh0LiAg SSBhbHNvCj4gZHJvcHBlZCB0aGUgQ09ORklHIGVuYWJsZW1lbnQgcGF0Y2ggZm9yIGFybTY0IHNp bmNlIEkgYW0geWV0IHRvIHRlc3QgaXQgd2l0aAo+IHRoZSBuZXcgVExCIGZsdXNoaW5nIGNvZGUg dGhhdCBpcyBpbiB2ZXJ5IHJlY2VudCBrZXJuZWwgcmVsZWFzZXMuIChOb25lIG9mIG15Cj4gYXJt NjQgZGV2aWNlcyBydW4gbWFpbmxpbmUgcmlnaHQgbm93Likgc28gSSB3aWxsIHBvc3QgdGhlIGFy bTY0IGVuYWJsZW1lbnQgb25jZQo+IEkgZ2V0IHRvIHRoYXQuIFRoZSBwZXJmb3JtYW5jZSBudW1i ZXJzIGluIHRoZSBzZXJpZXMgYXJlIGZvciB4ODYuCj4gCj4gTGlzdCBvZiBwYXRjaGVzIGluIHNl cmllczoKPiAKPiAoMSkgbW06IHNlbGVjdCBIQVZFX01PVkVfUE1EIGluIHg4NiBmb3IgZmFzdGVy IG1yZW1hcAo+IAo+ICgyKSBtbTogc3BlZWQgdXAgbXJlbWFwIGJ5IDIweCBvbiBsYXJnZSByZWdp b25zICh2NCkKPiB2MS0+djI6IEFkZGVkIHN1cHBvcnQgZm9yIHBlci1hcmNoIGVuYWJsZW1lbnQg KEtpcmlsbCBTaHV0ZW1vdikKPiB2Mi0+djM6IFVwZGF0ZWQgY29tbWl0IG1lc3NhZ2UgdG8gc3Rh dGUgdGhlIG9wdGltaXphdGlvbiBtYXkgYWxzbwo+IAlydW4gZm9yIG5vbi10aHAgdHlwZSBvZiBz eXN0ZW1zIChEYW5pZWwgQ29sKS4KPiB2My0+djQ6IFJlbW92ZSB1c2VsZXNzIHBtZF9sb2NrIGNo ZWNrIChLaXJpbGwgU2h1dGVtb3YpCj4gCVJlYmFzZWQgb250b3Agb2YgTGludXMncyBtYXN0ZXIs IHVwZGF0ZWQgcGVyZiByZXN1bHRzIGJhc2VkCj4gICAgICAgICBvbiB4ODYgdGVzdGluZy4gQWRk ZWQgS2lyaWxsJ3MgQWNrcy4KPiAKPiAoMykgbW06IHRyZWV3aWRlOiByZW1vdmUgdW51c2VkIGFk ZHJlc3MgYXJndW1lbnQgZnJvbSBwdGVfYWxsb2MgZnVuY3Rpb25zICh2MikKPiB2MS0+djI6IGZp eCBhcmNoL3VtLyBwcm90b3R5cGUgd2hpY2ggd2FzIG1pc3NlZCBpbiB2MSAoQW50b24gSXZhbm92 KQo+ICAgICAgICAgdXBkYXRlIGNoYW5nZWxvZyB3aXRoIG1hbnVhbCBmaXh1cHMgZm9yIG02OGsg YW5kIG1pY3JvYmxhemUuCj4gCj4gbm90IGluY2x1ZGVkIC0gKDQpIG1tOiBzZWxlY3QgSEFWRV9N T1ZFX1BNRCBpbiBhcm02NCBmb3IgZmFzdGVyIG1yZW1hcAo+ICAgICBUaGlzIHBhdGNoIGlzIGRy b3BwZWQgc2luY2UgbGFzdCBwb3N0aW5nIHBlbmRpbmcgZnVydGhlciBwZXJmb3JtYW5jZQo+ICAg ICB0ZXN0aW5nIG9uIGFybTY0IHdpdGggbmV3IFRMQiBnYXRoZXIgdXBkYXRlcy4gU2VlIG5vdGVz IGluIHBhdGNoCj4gICAgIHRpdGxlZCAibW06IHNwZWVkIHVwIG1yZW1hcCBieSA1MDB4IG9uIGxh cmdlIHJlZ2lvbnMiIGZvciBtb3JlCj4gICAgIGRldGFpbHMuCj4gCgpUaGlzIGJyZWFrcyBVTUwg YnVpbGQ6CiAgQ0MgICAgICBtbS9tcmVtYXAubwptbS9tcmVtYXAuYzogSW4gZnVuY3Rpb24g4oCY bW92ZV9ub3JtYWxfcG1k4oCZOgptbS9tcmVtYXAuYzoyMjk6MjogZXJyb3I6IGltcGxpY2l0IGRl Y2xhcmF0aW9uIG9mIGZ1bmN0aW9uIOKAmHNldF9wbWRfYXTigJk7IGRpZCB5b3UgbWVhbiDigJhz ZXRfcHRlX2F04oCZPyBbLVdlcnJvcj1pbXBsaWNpdC1mdW5jdGlvbi1kZWNsYXJhdGlvbl0KICBz ZXRfcG1kX2F0KG1tLCBuZXdfYWRkciwgbmV3X3BtZCwgcG1kKTsKICBefn5+fn5+fn5+CiAgc2V0 X3B0ZV9hdAogIENDICAgICAgY3J5cHRvL3JuZy5vCiAgQ0MgICAgICBmcy9kaXJlY3QtaW8ubwpj YzE6IHNvbWUgd2FybmluZ3MgYmVpbmcgdHJlYXRlZCBhcyBlcnJvcnMKClRvIHRlc3QgeW91cnNl bGYsIGp1c3QgcnVuIG9uIGEgeDg2IGJveDoKJCBtYWtlIGRlZmNvbmZpZyBBUkNIPXVtCiQgbWFr ZSBsaW51eCBBUkNIPXVtCgpUaGFua3MsCi8vcmljaGFyZAoKCgpfX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fXwpsaW51eC1zbnBzLWFyYyBtYWlsaW5nIGxpc3QK bGludXgtc25wcy1hcmNAbGlzdHMuaW5mcmFkZWFkLm9yZwpodHRwOi8vbGlzdHMuaW5mcmFkZWFk Lm9yZy9tYWlsbWFuL2xpc3RpbmZvL2xpbnV4LXNucHMtYXJj From mboxrd@z Thu Jan 1 00:00:00 1970 Received: with ECARTIS (v1.0.0; list linux-mips); Sat, 03 Nov 2018 10:16:06 +0100 (CET) Received: from lithops.sigma-star.at ([195.201.40.130]:48108 "EHLO lithops.sigma-star.at" rhost-flags-OK-OK-OK-OK) by eddie.linux-mips.org with ESMTP id S23991808AbeKCJPPb4N9i convert rfc822-to-8bit (ORCPT ); Sat, 3 Nov 2018 10:15:15 +0100 Received: from localhost (localhost [127.0.0.1]) by lithops.sigma-star.at (Postfix) with ESMTP id 0885C606D487; Sat, 3 Nov 2018 10:15:15 +0100 (CET) Received: from lithops.sigma-star.at ([127.0.0.1]) by localhost (lithops.sigma-star.at [127.0.0.1]) (amavisd-new, port 10032) with ESMTP id POaZfqxv8zrK; Sat, 3 Nov 2018 10:15:14 +0100 (CET) Received: from localhost (localhost [127.0.0.1]) by lithops.sigma-star.at (Postfix) with ESMTP id 81CD7606C48C; Sat, 3 Nov 2018 10:15:14 +0100 (CET) Received: from lithops.sigma-star.at ([127.0.0.1]) by localhost (lithops.sigma-star.at [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id 6U7XB2Wlq2pf; Sat, 3 Nov 2018 10:15:14 +0100 (CET) Received: from blindfold.localnet (213-47-184-186.cable.dynamic.surfer.at [213.47.184.186]) by lithops.sigma-star.at (Postfix) with ESMTPSA id 440E1609F82F; Sat, 3 Nov 2018 10:15:12 +0100 (CET) From: Richard Weinberger To: Joel Fernandes Cc: linux-kernel@vger.kernel.org, kernel-team@android.com, Joel Fernandes , akpm@linux-foundation.org, Andrey Ryabinin , Andy Lutomirski , anton.ivanov@kot-begemot.co.uk, Borislav Petkov , Catalin Marinas , Chris Zankel , dancol@google.com, Dave Hansen , "David S. Miller" , elfring@users.sourceforge.net, Fenghua Yu , Geert Uytterhoeven , Guan Xuetao , Helge Deller , hughd@google.com, Ingo Molnar , "James E.J. Bottomley" , Jeff Dike , Jonas Bonn , Julia Lawall , kasan-dev@googlegroups.com, kirill@shutemov.name, kvmarm@lists.cs.columbia.edu, Ley Foon Tan , linux-alpha@vger.kernel.org, linux-hexagon@vger.kernel.org, linux-ia64@vge, r.kernel.org@lithops.sigma-star.at, linux-m68k@lists.linux-m68k.org, linux-mips@linux-mips.org, linux-mm@kvack.org, linux-parisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, linux-sh@vger.kernel.org, linux-snps-arc@lists.infradead.org, linux-um@lists.infradead.org, linux-xtensa@linux-xtensa.org, lokeshgidra@google.com, Max Filippov , Michal Hocko , minchan@kernel.org, nios2-dev@lists.rocketboards.org, pantin@google.com, Peter Zijlstra , Rich Felker , Sam Creasey , sparclinux@vger.kernel.org, Stafford Horne , Stefan Kristiansson , Thomas Gleixner , Tony Luck , Will Deacon , "maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)" , Yoshinori Sato Subject: Re: [PATCH -next 0/3] Add support for fast mremap Date: Sat, 03 Nov 2018 10:15:11 +0100 Message-ID: <6886607.O3ZT5bM3Cy@blindfold> In-Reply-To: <20181103040041.7085-1-joelaf@google.com> References: <20181103040041.7085-1-joelaf@google.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8BIT Content-Type: text/plain; charset="UTF-8" Return-Path: X-Envelope-To: <"|/home/ecartis/ecartis -s linux-mips"> (uid 0) X-Orcpt: rfc822;linux-mips@linux-mips.org Original-Recipient: rfc822;linux-mips@linux-mips.org X-archive-position: 67060 X-ecartis-version: Ecartis v1.0.0 Sender: linux-mips-bounce@linux-mips.org Errors-to: linux-mips-bounce@linux-mips.org X-original-sender: richard@nod.at Precedence: bulk List-help: List-unsubscribe: List-software: Ecartis version 1.0.0 List-Id: linux-mips X-List-ID: linux-mips List-subscribe: List-owner: List-post: List-archive: X-list: linux-mips Joel, Am Samstag, 3. November 2018, 05:00:38 CET schrieb Joel Fernandes: > Hi, > Here is the latest "fast mremap" series. This just a repost with Kirill's > Acked-bys added. I would like this to be considered for linux -next. I also > dropped the CONFIG enablement patch for arm64 since I am yet to test it with > the new TLB flushing code that is in very recent kernel releases. (None of my > arm64 devices run mainline right now.) so I will post the arm64 enablement once > I get to that. The performance numbers in the series are for x86. > > List of patches in series: > > (1) mm: select HAVE_MOVE_PMD in x86 for faster mremap > > (2) mm: speed up mremap by 20x on large regions (v4) > v1->v2: Added support for per-arch enablement (Kirill Shutemov) > v2->v3: Updated commit message to state the optimization may also > run for non-thp type of systems (Daniel Col). > v3->v4: Remove useless pmd_lock check (Kirill Shutemov) > Rebased ontop of Linus's master, updated perf results based > on x86 testing. Added Kirill's Acks. > > (3) mm: treewide: remove unused address argument from pte_alloc functions (v2) > v1->v2: fix arch/um/ prototype which was missed in v1 (Anton Ivanov) > update changelog with manual fixups for m68k and microblaze. > > not included - (4) mm: select HAVE_MOVE_PMD in arm64 for faster mremap > This patch is dropped since last posting pending further performance > testing on arm64 with new TLB gather updates. See notes in patch > titled "mm: speed up mremap by 500x on large regions" for more > details. > This breaks UML build: CC mm/mremap.o mm/mremap.c: In function ‘move_normal_pmd’: mm/mremap.c:229:2: error: implicit declaration of function ‘set_pmd_at’; did you mean ‘set_pte_at’? [-Werror=implicit-function-declaration] set_pmd_at(mm, new_addr, new_pmd, pmd); ^~~~~~~~~~ set_pte_at CC crypto/rng.o CC fs/direct-io.o cc1: some warnings being treated as errors To test yourself, just run on a x86 box: $ make defconfig ARCH=um $ make linux ARCH=um Thanks, //richard From mboxrd@z Thu Jan 1 00:00:00 1970 From: Richard Weinberger Subject: Re: [PATCH -next 0/3] Add support for fast mremap Date: Sat, 03 Nov 2018 10:15:11 +0100 Message-ID: <6886607.O3ZT5bM3Cy@blindfold> References: <20181103040041.7085-1-joelaf@google.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Cc: Joel Fernandes , linux-mips@linux-mips.org, Rich Felker , linux-sh@vger.kernel.org, Peter Zijlstra , Catalin Marinas , Dave Hansen , Will Deacon , "maintainer:X86 ARCHITECTURE \(32-BIT AND 64-BIT\)" , Michal Hocko , linux-mm@kvack.org, lokeshgidra@google.com, sparclinux@vger.kernel.org, linux-riscv@lists.infradead.org, linux-ia64@vge, elfring@users.sourceforge.net, Jonas Bonn , kvmarm@lists.cs.columbia.edu, dancol@google.com, Yoshinori Sato , linux-xtensa@linux-xtensa.org, linux-hexagon@vger.kernel.org, Helge Deller , r.kernel.org@lithops.sigma-star.at, hughd@google.com, "James E.J. Bottomley" , kasan-dev@googlegroups.com To: Joel Fernandes Return-path: In-Reply-To: <20181103040041.7085-1-joelaf@google.com> List-Id: Linux on Synopsys ARC Processors List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: linux-snps-arc-bounces+gla-linux-snps-arc=m.gmane.org@lists.infradead.org Sm9lbCwKCkFtIFNhbXN0YWcsIDMuIE5vdmVtYmVyIDIwMTgsIDA1OjAwOjM4IENFVCBzY2hyaWVi IEpvZWwgRmVybmFuZGVzOgo+IEhpLAo+IEhlcmUgaXMgdGhlIGxhdGVzdCAiZmFzdCBtcmVtYXAi IHNlcmllcy4gVGhpcyBqdXN0IGEgcmVwb3N0IHdpdGggS2lyaWxsJ3MKPiBBY2tlZC1ieXMgYWRk ZWQuIEkgd291bGQgbGlrZSB0aGlzIHRvIGJlIGNvbnNpZGVyZWQgZm9yIGxpbnV4IC1uZXh0LiAg SSBhbHNvCj4gZHJvcHBlZCB0aGUgQ09ORklHIGVuYWJsZW1lbnQgcGF0Y2ggZm9yIGFybTY0IHNp bmNlIEkgYW0geWV0IHRvIHRlc3QgaXQgd2l0aAo+IHRoZSBuZXcgVExCIGZsdXNoaW5nIGNvZGUg dGhhdCBpcyBpbiB2ZXJ5IHJlY2VudCBrZXJuZWwgcmVsZWFzZXMuIChOb25lIG9mIG15Cj4gYXJt NjQgZGV2aWNlcyBydW4gbWFpbmxpbmUgcmlnaHQgbm93Likgc28gSSB3aWxsIHBvc3QgdGhlIGFy bTY0IGVuYWJsZW1lbnQgb25jZQo+IEkgZ2V0IHRvIHRoYXQuIFRoZSBwZXJmb3JtYW5jZSBudW1i ZXJzIGluIHRoZSBzZXJpZXMgYXJlIGZvciB4ODYuCj4gCj4gTGlzdCBvZiBwYXRjaGVzIGluIHNl cmllczoKPiAKPiAoMSkgbW06IHNlbGVjdCBIQVZFX01PVkVfUE1EIGluIHg4NiBmb3IgZmFzdGVy IG1yZW1hcAo+IAo+ICgyKSBtbTogc3BlZWQgdXAgbXJlbWFwIGJ5IDIweCBvbiBsYXJnZSByZWdp b25zICh2NCkKPiB2MS0+djI6IEFkZGVkIHN1cHBvcnQgZm9yIHBlci1hcmNoIGVuYWJsZW1lbnQg KEtpcmlsbCBTaHV0ZW1vdikKPiB2Mi0+djM6IFVwZGF0ZWQgY29tbWl0IG1lc3NhZ2UgdG8gc3Rh dGUgdGhlIG9wdGltaXphdGlvbiBtYXkgYWxzbwo+IAlydW4gZm9yIG5vbi10aHAgdHlwZSBvZiBz eXN0ZW1zIChEYW5pZWwgQ29sKS4KPiB2My0+djQ6IFJlbW92ZSB1c2VsZXNzIHBtZF9sb2NrIGNo ZWNrIChLaXJpbGwgU2h1dGVtb3YpCj4gCVJlYmFzZWQgb250b3Agb2YgTGludXMncyBtYXN0ZXIs IHVwZGF0ZWQgcGVyZiByZXN1bHRzIGJhc2VkCj4gICAgICAgICBvbiB4ODYgdGVzdGluZy4gQWRk ZWQgS2lyaWxsJ3MgQWNrcy4KPiAKPiAoMykgbW06IHRyZWV3aWRlOiByZW1vdmUgdW51c2VkIGFk ZHJlc3MgYXJndW1lbnQgZnJvbSBwdGVfYWxsb2MgZnVuY3Rpb25zICh2MikKPiB2MS0+djI6IGZp eCBhcmNoL3VtLyBwcm90b3R5cGUgd2hpY2ggd2FzIG1pc3NlZCBpbiB2MSAoQW50b24gSXZhbm92 KQo+ICAgICAgICAgdXBkYXRlIGNoYW5nZWxvZyB3aXRoIG1hbnVhbCBmaXh1cHMgZm9yIG02OGsg YW5kIG1pY3JvYmxhemUuCj4gCj4gbm90IGluY2x1ZGVkIC0gKDQpIG1tOiBzZWxlY3QgSEFWRV9N T1ZFX1BNRCBpbiBhcm02NCBmb3IgZmFzdGVyIG1yZW1hcAo+ICAgICBUaGlzIHBhdGNoIGlzIGRy b3BwZWQgc2luY2UgbGFzdCBwb3N0aW5nIHBlbmRpbmcgZnVydGhlciBwZXJmb3JtYW5jZQo+ICAg ICB0ZXN0aW5nIG9uIGFybTY0IHdpdGggbmV3IFRMQiBnYXRoZXIgdXBkYXRlcy4gU2VlIG5vdGVz IGluIHBhdGNoCj4gICAgIHRpdGxlZCAibW06IHNwZWVkIHVwIG1yZW1hcCBieSA1MDB4IG9uIGxh cmdlIHJlZ2lvbnMiIGZvciBtb3JlCj4gICAgIGRldGFpbHMuCj4gCgpUaGlzIGJyZWFrcyBVTUwg YnVpbGQ6CiAgQ0MgICAgICBtbS9tcmVtYXAubwptbS9tcmVtYXAuYzogSW4gZnVuY3Rpb24g4oCY bW92ZV9ub3JtYWxfcG1k4oCZOgptbS9tcmVtYXAuYzoyMjk6MjogZXJyb3I6IGltcGxpY2l0IGRl Y2xhcmF0aW9uIG9mIGZ1bmN0aW9uIOKAmHNldF9wbWRfYXTigJk7IGRpZCB5b3UgbWVhbiDigJhz ZXRfcHRlX2F04oCZPyBbLVdlcnJvcj1pbXBsaWNpdC1mdW5jdGlvbi1kZWNsYXJhdGlvbl0KICBz ZXRfcG1kX2F0KG1tLCBuZXdfYWRkciwgbmV3X3BtZCwgcG1kKTsKICBefn5+fn5+fn5+CiAgc2V0 X3B0ZV9hdAogIENDICAgICAgY3J5cHRvL3JuZy5vCiAgQ0MgICAgICBmcy9kaXJlY3QtaW8ubwpj YzE6IHNvbWUgd2FybmluZ3MgYmVpbmcgdHJlYXRlZCBhcyBlcnJvcnMKClRvIHRlc3QgeW91cnNl bGYsIGp1c3QgcnVuIG9uIGEgeDg2IGJveDoKJCBtYWtlIGRlZmNvbmZpZyBBUkNIPXVtCiQgbWFr ZSBsaW51eCBBUkNIPXVtCgpUaGFua3MsCi8vcmljaGFyZAoKCgpfX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fXwpsaW51eC1zbnBzLWFyYyBtYWlsaW5nIGxpc3QK bGludXgtc25wcy1hcmNAbGlzdHMuaW5mcmFkZWFkLm9yZwpodHRwOi8vbGlzdHMuaW5mcmFkZWFk Lm9yZy9tYWlsbWFuL2xpc3RpbmZvL2xpbnV4LXNucHMtYXJj From mboxrd@z Thu Jan 1 00:00:00 1970 From: richard@nod.at (Richard Weinberger) Date: Sat, 03 Nov 2018 10:15:11 +0100 Subject: [PATCH -next 0/3] Add support for fast mremap In-Reply-To: <20181103040041.7085-1-joelaf@google.com> References: <20181103040041.7085-1-joelaf@google.com> Message-ID: <6886607.O3ZT5bM3Cy@blindfold> To: linux-riscv@lists.infradead.org List-Id: linux-riscv.lists.infradead.org Joel, Am Samstag, 3. November 2018, 05:00:38 CET schrieb Joel Fernandes: > Hi, > Here is the latest "fast mremap" series. This just a repost with Kirill's > Acked-bys added. I would like this to be considered for linux -next. I also > dropped the CONFIG enablement patch for arm64 since I am yet to test it with > the new TLB flushing code that is in very recent kernel releases. (None of my > arm64 devices run mainline right now.) so I will post the arm64 enablement once > I get to that. The performance numbers in the series are for x86. > > List of patches in series: > > (1) mm: select HAVE_MOVE_PMD in x86 for faster mremap > > (2) mm: speed up mremap by 20x on large regions (v4) > v1->v2: Added support for per-arch enablement (Kirill Shutemov) > v2->v3: Updated commit message to state the optimization may also > run for non-thp type of systems (Daniel Col). > v3->v4: Remove useless pmd_lock check (Kirill Shutemov) > Rebased ontop of Linus's master, updated perf results based > on x86 testing. Added Kirill's Acks. > > (3) mm: treewide: remove unused address argument from pte_alloc functions (v2) > v1->v2: fix arch/um/ prototype which was missed in v1 (Anton Ivanov) > update changelog with manual fixups for m68k and microblaze. > > not included - (4) mm: select HAVE_MOVE_PMD in arm64 for faster mremap > This patch is dropped since last posting pending further performance > testing on arm64 with new TLB gather updates. See notes in patch > titled "mm: speed up mremap by 500x on large regions" for more > details. > This breaks UML build: CC mm/mremap.o mm/mremap.c: In function ?move_normal_pmd?: mm/mremap.c:229:2: error: implicit declaration of function ?set_pmd_at?; did you mean ?set_pte_at?? [-Werror=implicit-function-declaration] set_pmd_at(mm, new_addr, new_pmd, pmd); ^~~~~~~~~~ set_pte_at CC crypto/rng.o CC fs/direct-io.o cc1: some warnings being treated as errors To test yourself, just run on a x86 box: $ make defconfig ARCH=um $ make linux ARCH=um Thanks, //richard From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.5 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS, URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1F310C0044C for ; Sat, 3 Nov 2018 09:15:35 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id C6C0E2081F for ; Sat, 3 Nov 2018 09:15:34 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="bZhb6H01" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C6C0E2081F Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=nod.at Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-riscv-bounces+infradead-linux-riscv=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=zD+pNf717qE4+ynfeObPU9bP2iK70WCRQlFTyRgjdDo=; b=bZhb6H01MiaDey XAdlO1dhdviewCAz02l8KvyBlXezYC778siKdKZssq8lxLT9YSAXI19atodK+IJJacjGA3I2ylEuU wWJ1S0t980V1pcQ9snyayMUQ3U56/b1Hv9woSKf7LoMT4i0RZhff73VVixyyHn7O4yu3A8OHs+eT6 dCCSZpclLiybaX/1RwuAnKiK1w9o/zZY6uum4zq+e/kCKQntbaOSU8HoU2MddDoqSB4qsNRCejV/9 A2IjTgg83qHFxJbbMjIocM0cNdkukMK3+TF7IjZHoQ6UFJpgfm2RjOIgqEhUrbiBh4a/VpP6TYVDe 5AVAVabHWlBRkgWUN74Q==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1gIs1k-0002sV-QG; Sat, 03 Nov 2018 09:15:32 +0000 Received: from lithops.sigma-star.at ([195.201.40.130]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1gIs1g-0002qr-BP; Sat, 03 Nov 2018 09:15:30 +0000 Received: from localhost (localhost [127.0.0.1]) by lithops.sigma-star.at (Postfix) with ESMTP id 0885C606D487; Sat, 3 Nov 2018 10:15:15 +0100 (CET) Received: from lithops.sigma-star.at ([127.0.0.1]) by localhost (lithops.sigma-star.at [127.0.0.1]) (amavisd-new, port 10032) with ESMTP id POaZfqxv8zrK; Sat, 3 Nov 2018 10:15:14 +0100 (CET) Received: from localhost (localhost [127.0.0.1]) by lithops.sigma-star.at (Postfix) with ESMTP id 81CD7606C48C; Sat, 3 Nov 2018 10:15:14 +0100 (CET) Received: from lithops.sigma-star.at ([127.0.0.1]) by localhost (lithops.sigma-star.at [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id 6U7XB2Wlq2pf; Sat, 3 Nov 2018 10:15:14 +0100 (CET) Received: from blindfold.localnet (213-47-184-186.cable.dynamic.surfer.at [213.47.184.186]) by lithops.sigma-star.at (Postfix) with ESMTPSA id 440E1609F82F; Sat, 3 Nov 2018 10:15:12 +0100 (CET) From: Richard Weinberger To: Joel Fernandes Subject: Re: [PATCH -next 0/3] Add support for fast mremap Date: Sat, 03 Nov 2018 10:15:11 +0100 Message-ID: <6886607.O3ZT5bM3Cy@blindfold> In-Reply-To: <20181103040041.7085-1-joelaf@google.com> References: <20181103040041.7085-1-joelaf@google.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20181103_021528_687996_7D42EA29 X-CRM114-Status: GOOD ( 13.77 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Joel Fernandes , linux-mips@linux-mips.org, Rich Felker , linux-sh@vger.kernel.org, Peter Zijlstra , Catalin Marinas , Dave Hansen , Will Deacon , "maintainer:X86 ARCHITECTURE \(32-BIT AND 64-BIT\)" , Michal Hocko , linux-mm@kvack.org, lokeshgidra@google.com, sparclinux@vger.kernel.org, linux-riscv@lists.infradead.org, linux-ia64@vge, elfring@users.sourceforge.net, Jonas Bonn , kvmarm@lists.cs.columbia.edu, dancol@google.com, Yoshinori Sato , linux-xtensa@linux-xtensa.org, linux-hexagon@vger.kernel.org, Helge Deller , r.kernel.org@lithops.sigma-star.at, hughd@google.com, "James E.J. Bottomley" , kasan-dev@googlegroups.com, anton.ivanov@kot-begemot.co.uk, Ingo Molnar , Geert Uytterhoeven , Andrey Ryabinin , linux-snps-arc@lists.infradead.org, kernel-team@android.com, Sam Creasey , Fenghua Yu , linux-s390@vger.kernel.org, Jeff Dike , linux-um@lists.infradead.org, Stefan Kristiansson , Julia Lawall , linux-m68k@lists.linux-m68k.org, Borislav Petkov , Andy Lutomirski , nios2-dev@lists.rocketboards.org, kirill@shutemov.name, Stafford Horne , Guan Xuetao , Chris Zankel , Tony Luck , linux-parisc@vger.kernel.org, Max Filippov , pantin@google.com, linux-kernel@vger.kernel.org, minchan@kernel.org, Thomas Gleixner , linux-alpha@vger.kernel.org, Ley Foon Tan , akpm@linux-foundation.org, linuxppc-dev@lists.ozlabs.org, "David S. Miller" Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-riscv" Errors-To: linux-riscv-bounces+infradead-linux-riscv=archiver.kernel.org@lists.infradead.org Message-ID: <20181103091511.faEDmINDiWsNFLba62WRwyJB651F9RSSBxifvKlrn7o@z> Sm9lbCwKCkFtIFNhbXN0YWcsIDMuIE5vdmVtYmVyIDIwMTgsIDA1OjAwOjM4IENFVCBzY2hyaWVi IEpvZWwgRmVybmFuZGVzOgo+IEhpLAo+IEhlcmUgaXMgdGhlIGxhdGVzdCAiZmFzdCBtcmVtYXAi IHNlcmllcy4gVGhpcyBqdXN0IGEgcmVwb3N0IHdpdGggS2lyaWxsJ3MKPiBBY2tlZC1ieXMgYWRk ZWQuIEkgd291bGQgbGlrZSB0aGlzIHRvIGJlIGNvbnNpZGVyZWQgZm9yIGxpbnV4IC1uZXh0LiAg SSBhbHNvCj4gZHJvcHBlZCB0aGUgQ09ORklHIGVuYWJsZW1lbnQgcGF0Y2ggZm9yIGFybTY0IHNp bmNlIEkgYW0geWV0IHRvIHRlc3QgaXQgd2l0aAo+IHRoZSBuZXcgVExCIGZsdXNoaW5nIGNvZGUg dGhhdCBpcyBpbiB2ZXJ5IHJlY2VudCBrZXJuZWwgcmVsZWFzZXMuIChOb25lIG9mIG15Cj4gYXJt NjQgZGV2aWNlcyBydW4gbWFpbmxpbmUgcmlnaHQgbm93Likgc28gSSB3aWxsIHBvc3QgdGhlIGFy bTY0IGVuYWJsZW1lbnQgb25jZQo+IEkgZ2V0IHRvIHRoYXQuIFRoZSBwZXJmb3JtYW5jZSBudW1i ZXJzIGluIHRoZSBzZXJpZXMgYXJlIGZvciB4ODYuCj4gCj4gTGlzdCBvZiBwYXRjaGVzIGluIHNl cmllczoKPiAKPiAoMSkgbW06IHNlbGVjdCBIQVZFX01PVkVfUE1EIGluIHg4NiBmb3IgZmFzdGVy IG1yZW1hcAo+IAo+ICgyKSBtbTogc3BlZWQgdXAgbXJlbWFwIGJ5IDIweCBvbiBsYXJnZSByZWdp b25zICh2NCkKPiB2MS0+djI6IEFkZGVkIHN1cHBvcnQgZm9yIHBlci1hcmNoIGVuYWJsZW1lbnQg KEtpcmlsbCBTaHV0ZW1vdikKPiB2Mi0+djM6IFVwZGF0ZWQgY29tbWl0IG1lc3NhZ2UgdG8gc3Rh dGUgdGhlIG9wdGltaXphdGlvbiBtYXkgYWxzbwo+IAlydW4gZm9yIG5vbi10aHAgdHlwZSBvZiBz eXN0ZW1zIChEYW5pZWwgQ29sKS4KPiB2My0+djQ6IFJlbW92ZSB1c2VsZXNzIHBtZF9sb2NrIGNo ZWNrIChLaXJpbGwgU2h1dGVtb3YpCj4gCVJlYmFzZWQgb250b3Agb2YgTGludXMncyBtYXN0ZXIs IHVwZGF0ZWQgcGVyZiByZXN1bHRzIGJhc2VkCj4gICAgICAgICBvbiB4ODYgdGVzdGluZy4gQWRk ZWQgS2lyaWxsJ3MgQWNrcy4KPiAKPiAoMykgbW06IHRyZWV3aWRlOiByZW1vdmUgdW51c2VkIGFk ZHJlc3MgYXJndW1lbnQgZnJvbSBwdGVfYWxsb2MgZnVuY3Rpb25zICh2MikKPiB2MS0+djI6IGZp eCBhcmNoL3VtLyBwcm90b3R5cGUgd2hpY2ggd2FzIG1pc3NlZCBpbiB2MSAoQW50b24gSXZhbm92 KQo+ICAgICAgICAgdXBkYXRlIGNoYW5nZWxvZyB3aXRoIG1hbnVhbCBmaXh1cHMgZm9yIG02OGsg YW5kIG1pY3JvYmxhemUuCj4gCj4gbm90IGluY2x1ZGVkIC0gKDQpIG1tOiBzZWxlY3QgSEFWRV9N T1ZFX1BNRCBpbiBhcm02NCBmb3IgZmFzdGVyIG1yZW1hcAo+ICAgICBUaGlzIHBhdGNoIGlzIGRy b3BwZWQgc2luY2UgbGFzdCBwb3N0aW5nIHBlbmRpbmcgZnVydGhlciBwZXJmb3JtYW5jZQo+ICAg ICB0ZXN0aW5nIG9uIGFybTY0IHdpdGggbmV3IFRMQiBnYXRoZXIgdXBkYXRlcy4gU2VlIG5vdGVz IGluIHBhdGNoCj4gICAgIHRpdGxlZCAibW06IHNwZWVkIHVwIG1yZW1hcCBieSA1MDB4IG9uIGxh cmdlIHJlZ2lvbnMiIGZvciBtb3JlCj4gICAgIGRldGFpbHMuCj4gCgpUaGlzIGJyZWFrcyBVTUwg YnVpbGQ6CiAgQ0MgICAgICBtbS9tcmVtYXAubwptbS9tcmVtYXAuYzogSW4gZnVuY3Rpb24g4oCY bW92ZV9ub3JtYWxfcG1k4oCZOgptbS9tcmVtYXAuYzoyMjk6MjogZXJyb3I6IGltcGxpY2l0IGRl Y2xhcmF0aW9uIG9mIGZ1bmN0aW9uIOKAmHNldF9wbWRfYXTigJk7IGRpZCB5b3UgbWVhbiDigJhz ZXRfcHRlX2F04oCZPyBbLVdlcnJvcj1pbXBsaWNpdC1mdW5jdGlvbi1kZWNsYXJhdGlvbl0KICBz ZXRfcG1kX2F0KG1tLCBuZXdfYWRkciwgbmV3X3BtZCwgcG1kKTsKICBefn5+fn5+fn5+CiAgc2V0 X3B0ZV9hdAogIENDICAgICAgY3J5cHRvL3JuZy5vCiAgQ0MgICAgICBmcy9kaXJlY3QtaW8ubwpj YzE6IHNvbWUgd2FybmluZ3MgYmVpbmcgdHJlYXRlZCBhcyBlcnJvcnMKClRvIHRlc3QgeW91cnNl bGYsIGp1c3QgcnVuIG9uIGEgeDg2IGJveDoKJCBtYWtlIGRlZmNvbmZpZyBBUkNIPXVtCiQgbWFr ZSBsaW51eCBBUkNIPXVtCgpUaGFua3MsCi8vcmljaGFyZAoKCgpfX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fXwpsaW51eC1yaXNjdiBtYWlsaW5nIGxpc3QKbGlu dXgtcmlzY3ZAbGlzdHMuaW5mcmFkZWFkLm9yZwpodHRwOi8vbGlzdHMuaW5mcmFkZWFkLm9yZy9t YWlsbWFuL2xpc3RpbmZvL2xpbnV4LXJpc2N2Cg== From mboxrd@z Thu Jan 1 00:00:00 1970 From: richard@nod.at (Richard Weinberger) Date: Sat, 03 Nov 2018 10:15:11 +0100 Subject: [PATCH -next 0/3] Add support for fast mremap In-Reply-To: <20181103040041.7085-1-joelaf@google.com> References: <20181103040041.7085-1-joelaf@google.com> List-ID: Message-ID: <6886607.O3ZT5bM3Cy@blindfold> To: linux-snps-arc@lists.infradead.org Joel, Am Samstag, 3. November 2018, 05:00:38 CET schrieb Joel Fernandes: > Hi, > Here is the latest "fast mremap" series. This just a repost with Kirill's > Acked-bys added. I would like this to be considered for linux -next. I also > dropped the CONFIG enablement patch for arm64 since I am yet to test it with > the new TLB flushing code that is in very recent kernel releases. (None of my > arm64 devices run mainline right now.) so I will post the arm64 enablement once > I get to that. The performance numbers in the series are for x86. > > List of patches in series: > > (1) mm: select HAVE_MOVE_PMD in x86 for faster mremap > > (2) mm: speed up mremap by 20x on large regions (v4) > v1->v2: Added support for per-arch enablement (Kirill Shutemov) > v2->v3: Updated commit message to state the optimization may also > run for non-thp type of systems (Daniel Col). > v3->v4: Remove useless pmd_lock check (Kirill Shutemov) > Rebased ontop of Linus's master, updated perf results based > on x86 testing. Added Kirill's Acks. > > (3) mm: treewide: remove unused address argument from pte_alloc functions (v2) > v1->v2: fix arch/um/ prototype which was missed in v1 (Anton Ivanov) > update changelog with manual fixups for m68k and microblaze. > > not included - (4) mm: select HAVE_MOVE_PMD in arm64 for faster mremap > This patch is dropped since last posting pending further performance > testing on arm64 with new TLB gather updates. See notes in patch > titled "mm: speed up mremap by 500x on large regions" for more > details. > This breaks UML build: CC mm/mremap.o mm/mremap.c: In function ?move_normal_pmd?: mm/mremap.c:229:2: error: implicit declaration of function ?set_pmd_at?; did you mean ?set_pte_at?? [-Werror=implicit-function-declaration] set_pmd_at(mm, new_addr, new_pmd, pmd); ^~~~~~~~~~ set_pte_at CC crypto/rng.o CC fs/direct-io.o cc1: some warnings being treated as errors To test yourself, just run on a x86 box: $ make defconfig ARCH=um $ make linux ARCH=um Thanks, //richard From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9C673C0044C for ; Sat, 3 Nov 2018 11:45:47 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id E63812082E for ; Sat, 3 Nov 2018 11:45:46 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E63812082E Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=nod.at Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 42nHFP21f5zF36T for ; Sat, 3 Nov 2018 22:45:45 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=nod.at Authentication-Results: lists.ozlabs.org; spf=permerror (mailfrom) smtp.mailfrom=nod.at (client-ip=195.201.40.130; helo=lithops.sigma-star.at; envelope-from=richard@nod.at; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=nod.at X-Greylist: delayed 578 seconds by postgrey-1.36 at bilbo; Sat, 03 Nov 2018 20:25:06 AEDT Received: from lithops.sigma-star.at (lithops.sigma-star.at [195.201.40.130]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 42nD760X1jzF35t for ; Sat, 3 Nov 2018 20:25:05 +1100 (AEDT) Received: from localhost (localhost [127.0.0.1]) by lithops.sigma-star.at (Postfix) with ESMTP id 0885C606D487; Sat, 3 Nov 2018 10:15:15 +0100 (CET) Received: from lithops.sigma-star.at ([127.0.0.1]) by localhost (lithops.sigma-star.at [127.0.0.1]) (amavisd-new, port 10032) with ESMTP id POaZfqxv8zrK; Sat, 3 Nov 2018 10:15:14 +0100 (CET) Received: from localhost (localhost [127.0.0.1]) by lithops.sigma-star.at (Postfix) with ESMTP id 81CD7606C48C; Sat, 3 Nov 2018 10:15:14 +0100 (CET) Received: from lithops.sigma-star.at ([127.0.0.1]) by localhost (lithops.sigma-star.at [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id 6U7XB2Wlq2pf; Sat, 3 Nov 2018 10:15:14 +0100 (CET) Received: from blindfold.localnet (213-47-184-186.cable.dynamic.surfer.at [213.47.184.186]) by lithops.sigma-star.at (Postfix) with ESMTPSA id 440E1609F82F; Sat, 3 Nov 2018 10:15:12 +0100 (CET) From: Richard Weinberger To: Joel Fernandes Subject: Re: [PATCH -next 0/3] Add support for fast mremap Date: Sat, 03 Nov 2018 10:15:11 +0100 Message-ID: <6886607.O3ZT5bM3Cy@blindfold> In-Reply-To: <20181103040041.7085-1-joelaf@google.com> References: <20181103040041.7085-1-joelaf@google.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="UTF-8" X-Mailman-Approved-At: Sat, 03 Nov 2018 22:41:25 +1100 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Joel Fernandes , linux-mips@linux-mips.org, Rich Felker , linux-sh@vger.kernel.org, Peter Zijlstra , Catalin Marinas , Dave Hansen , Will Deacon , "maintainer:X86 ARCHITECTURE \(32-BIT AND 64-BIT\)" , Michal Hocko , linux-mm@kvack.org, lokeshgidra@google.com, sparclinux@vger.kernel.org, linux-riscv@lists.infradead.org, linux-ia64@vge, elfring@users.sourceforge.net, Jonas Bonn , kvmarm@lists.cs.columbia.edu, dancol@google.com, Yoshinori Sato , linux-xtensa@linux-xtensa.org, linux-hexagon@vger.kernel.org, Helge Deller , r.kernel.org@lithops.sigma-star.at, hughd@google.com, "James E.J. Bottomley" , kasan-dev@googlegroups.com, anton.ivanov@kot-begemot.co.uk, Ingo Molnar , Geert Uytterhoeven , Andrey Ryabinin , linux-snps-arc@lists.infradead.org, kernel-team@android.com, Sam Creasey , Fenghua Yu , linux-s390@vger.kernel.org, Jeff Dike , linux-um@lists.infradead.org, Stefan Kristiansson , Julia Lawall , linux-m68k@lists.linux-m68k.org, Borislav Petkov , Andy Lutomirski , nios2-dev@lists.rocketboards.org, kirill@shutemov.name, Stafford Horne , Guan Xuetao , Chris Zankel , Tony Luck , linux-parisc@vger.kernel.org, Max Filippov , pantin@google.com, linux-kernel@vger.kernel.org, minchan@kernel.org, Thomas Gleixner , linux-alpha@vger.kernel.org, Ley Foon Tan , akpm@linux-foundation.org, linuxppc-dev@lists.ozlabs.org, "David S. Miller" Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" Joel, Am Samstag, 3. November 2018, 05:00:38 CET schrieb Joel Fernandes: > Hi, > Here is the latest "fast mremap" series. This just a repost with Kirill's > Acked-bys added. I would like this to be considered for linux -next. I a= lso > dropped the CONFIG enablement patch for arm64 since I am yet to test it w= ith > the new TLB flushing code that is in very recent kernel releases. (None o= f my > arm64 devices run mainline right now.) so I will post the arm64 enablemen= t once > I get to that. The performance numbers in the series are for x86. >=20 > List of patches in series: >=20 > (1) mm: select HAVE_MOVE_PMD in x86 for faster mremap >=20 > (2) mm: speed up mremap by 20x on large regions (v4) > v1->v2: Added support for per-arch enablement (Kirill Shutemov) > v2->v3: Updated commit message to state the optimization may also > run for non-thp type of systems (Daniel Col). > v3->v4: Remove useless pmd_lock check (Kirill Shutemov) > Rebased ontop of Linus's master, updated perf results based > on x86 testing. Added Kirill's Acks. >=20 > (3) mm: treewide: remove unused address argument from pte_alloc functions= (v2) > v1->v2: fix arch/um/ prototype which was missed in v1 (Anton Ivanov) > update changelog with manual fixups for m68k and microblaze. >=20 > not included - (4) mm: select HAVE_MOVE_PMD in arm64 for faster mremap > This patch is dropped since last posting pending further performance > testing on arm64 with new TLB gather updates. See notes in patch > titled "mm: speed up mremap by 500x on large regions" for more > details. >=20 This breaks UML build: CC mm/mremap.o mm/mremap.c: In function =E2=80=98move_normal_pmd=E2=80=99: mm/mremap.c:229:2: error: implicit declaration of function =E2=80=98set_pmd= _at=E2=80=99; did you mean =E2=80=98set_pte_at=E2=80=99? [-Werror=3Dimplici= t-function-declaration] set_pmd_at(mm, new_addr, new_pmd, pmd); ^~~~~~~~~~ set_pte_at CC crypto/rng.o CC fs/direct-io.o cc1: some warnings being treated as errors To test yourself, just run on a x86 box: $ make defconfig ARCH=3Dum $ make linux ARCH=3Dum Thanks, //richard