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=-8.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SPF_HELO_NONE,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 D9B0EC433DB for ; Tue, 30 Mar 2021 05:51:44 +0000 (UTC) Received: from desiato.infradead.org (desiato.infradead.org [90.155.92.199]) (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 874D561935 for ; Tue, 30 Mar 2021 05:51:44 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 874D561935 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=brainfault.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-riscv-bounces+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=desiato.20200630; h=Sender:Content-Transfer-Encoding :Content-Type:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:Cc:To:Subject:Message-ID:Date:From:In-Reply-To: References:MIME-Version:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=Jy4fK2kFdM9EzKxgh2pa5fFrdPkoYyO0pmZ710aCt+I=; b=Rm1a6mM4gUG8uBYZ+7eHpaths zz+TKKXxRam6vfMfwzSvHwWvopzFBHtNlgfL8TwWp5lLqTAlwHuUaYIcZqx2vAFC0r2SOGbRtYsQB ieuJ7U0seFI6jhdVt9LQTUZ+AWI5sRv2oB7OCUldo8ypd40kb3yg22766gKQAwMhhN3aF3DDtsQoj ViThngAFN2pvRsnU9myk//T0Btd3OCLDOy1ti4eUHLgCRAH4RP0yyxECwxTmZO5ZzHwxBvrSm3NWn qMqL0r3Hmxit5RiPUBtj1o8hJ2PnvwXhK0NobgSsf/nGRoNdmaL/sN4PpkPzX6/pzsNsxImeVKO8k YiMdPkiQg==; Received: from localhost ([::1] helo=desiato.infradead.org) by desiato.infradead.org with esmtp (Exim 4.94 #2 (Red Hat Linux)) id 1lR7Hm-002nNH-21; Tue, 30 Mar 2021 05:51:30 +0000 Received: from mail-lj1-x22a.google.com ([2a00:1450:4864:20::22a]) by desiato.infradead.org with esmtps (Exim 4.94 #2 (Red Hat Linux)) id 1lR7Hg-002nMP-Gz for linux-riscv@lists.infradead.org; Tue, 30 Mar 2021 05:51:27 +0000 Received: by mail-lj1-x22a.google.com with SMTP id y1so18493276ljm.10 for ; Mon, 29 Mar 2021 22:51:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=brainfault-org.20150623.gappssmtp.com; s=20150623; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc:content-transfer-encoding; bh=q6lEE2mLxUSxwFUa7GfL5LXw+GX8ZqMED2HXvAcd790=; b=QWDQj/k//08OQqkLgKt3T0BFbwXuqS+LZt6L6iSTc0BsCjEFYh0/VLD9npTeuxxWsQ 97fkc+OgI/HFewPYFVTQjqec9xguXnT4goiwh7cv91Uvzs+fQgLuBy3pfDnHx537JOv+ pBulm1ChNlHQ6wlKqEXZndfqsxQ94GixOKN5sePQBcRIfXZ7lDgwolWcdjeDr2xUtHXI 2a1bUSdW6O31D8XCrS66t7QBaOjTf/YCYiaVLIf2VPF3dI0v34NGPxnf1K6KB45Ftkgr GyBjG9C9MLS1CBL0YWsXov3mtTF1kpCQcG7HMQAUjcL6Wcvqv0it5T+c6D2/A565YeEK Rsxw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc:content-transfer-encoding; bh=q6lEE2mLxUSxwFUa7GfL5LXw+GX8ZqMED2HXvAcd790=; b=rFeCK0dyGLyN6wpEToS7Kf+c5yJ5IbQnorciZcZ0u7920UA8GXc5JLvXqIkPgD3Srk gcHqqqYz/T1l3cLnbZYqgDuwFCiX5JVsYnMzkstOjXqm6CBagKvnrVpcWFa+wDmQUzm5 zk97xyB1sRp4Gyaj+b7XpXdHEidbBdjwbplQMGBm41SX7qVOllwVJYjn4Qu44GUvL3ze /s4/b5wEjg6GAIGeEjwHfLZLWVjyn8sfFlZ1gN8jjcJfnjHXwhxWAeLgOTYRrmmUqrTP FNmnDVkGivjPYZged20J2ytCoIG+JOvqg5bG8d5hK0Ajvu3/zDYNLtazPtGZeelp1DE3 uE3w== X-Gm-Message-State: AOAM530OI0qiJV8sbAGBGLI+clrpzR+7fx6X08RT7nb1LYy4fasirZun NzvfMyWcnyHEuXDya5IIlK1QZ9PLVtw3O7ltlWRJPA== X-Google-Smtp-Source: ABdhPJwiUwnbbZmlObvrahOjCJ6o2HFElpU0UGc8nhlBKt2fEzygnVd4qkLRnIKdDWUW9FsXtGj8y7/NGKgsZ/G7KGM= X-Received: by 2002:a2e:8114:: with SMTP id d20mr20111828ljg.83.1617083483493; Mon, 29 Mar 2021 22:51:23 -0700 (PDT) MIME-Version: 1.0 References: <1616868399-82848-1-git-send-email-guoren@kernel.org> <1616868399-82848-4-git-send-email-guoren@kernel.org> In-Reply-To: From: Anup Patel Date: Tue, 30 Mar 2021 11:21:12 +0530 Message-ID: Subject: Re: [PATCH v4 3/4] locking/qspinlock: Add ARCH_USE_QUEUED_SPINLOCKS_XCHG32 To: Guo Ren Cc: Arnd Bergmann , Peter Zijlstra , linux-riscv , Linux Kernel Mailing List , linux-csky@vger.kernel.org, linux-arch , Guo Ren , Will Deacon , Ingo Molnar , Waiman Long , Sebastian Andrzej Siewior X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210330_065125_354002_B3EC7793 X-CRM114-Status: GOOD ( 38.44 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org T24gVHVlLCBNYXIgMzAsIDIwMjEgYXQgNzo1NiBBTSBHdW8gUmVuIDxndW9yZW5Aa2VybmVsLm9y Zz4gd3JvdGU6Cj4KPiBPbiBNb24sIE1hciAyOSwgMjAyMSBhdCA5OjU2IFBNIEFybmQgQmVyZ21h bm4gPGFybmRAYXJuZGIuZGU+IHdyb3RlOgo+ID4KPiA+IE9uIE1vbiwgTWFyIDI5LCAyMDIxIGF0 IDI6NTIgUE0gR3VvIFJlbiA8Z3VvcmVuQGtlcm5lbC5vcmc+IHdyb3RlOgo+ID4gPgo+ID4gPiBP biBNb24sIE1hciAyOSwgMjAyMSBhdCA3OjMxIFBNIFBldGVyIFppamxzdHJhIDxwZXRlcnpAaW5m cmFkZWFkLm9yZz4gd3JvdGU6Cj4gPiA+ID4KPiA+ID4gPiBPbiBNb24sIE1hciAyOSwgMjAyMSBh dCAwMToxNjo1M1BNICswMjAwLCBQZXRlciBaaWpsc3RyYSB3cm90ZToKPiA+ID4gPiA+IEFueXdh eSwgYW4gYWRkaXRpb25hbCAnZnVubnknIGlzIHRoYXQgSSBzdXNwZWN0IHlvdSBjYW5ub3QgcHJv dmUgZndkCj4gPiA+ID4gPiBwcm9ncmVzcyBvZiB0aGUgZW50aXJlIHByaW1pdGl2ZSB3aXRoIGFu eSBvZiB0aGlzIG9uLiBCdXQgd2hvIGNhcmVzCj4gPiA+ID4gPiBhYm91dCBkZXRhaWxzIGFueXdh eS4uIDovCj4gPiA+ID4KPiA+ID4gPiBXaGF0J3MgdGhlIGFyY2hpdGVjdHVyYWwgZ3VhcmFudGVl IG9uIExML1NDIHByb2dyZXNzIGZvciBSSVNDLVYgPwo+ID4gPgo+ID4gPiBmdW5jdDUgICAgfCBh cSB8IHJsICAgfCByczIgfCAgcnMxICB8IGZ1bmN0MyB8IHJkIHwgb3Bjb2RlCj4gPiA+ICAgICAg NSAgICAgICAgICAxICAgIDEgICAgICA1ICAgICAgIDUgICAgICAgICAzICAgICAgICA1ICAgICAg ICAgIDcKPiA+ID4gTFIuVy9EICBvcmRlcmluZyAgMCAgICAgYWRkciAgICB3aWR0aCAgIGRlc3Qg ICAgQU1PCj4gPiA+IFNDLlcvRCAgb3JkZXJpbmcgIHNyYyAgYWRkciAgICB3aWR0aCAgIGRlc3Qg ICAgQU1PCj4gPiA+Cj4gPiA+IExSLlcgbG9hZHMgYSB3b3JkIGZyb20gdGhlIGFkZHJlc3MgaW4g cnMxLCBwbGFjZXMgdGhlIHNpZ24tZXh0ZW5kZWQKPiA+ID4gdmFsdWUgaW4gcmQsIGFuZCByZWdp c3RlcnMgYSByZXNlcnZhdGlvbiBzZXTigJRhIHNldCBvZiBieXRlcyB0aGF0Cj4gPiA+IHN1YnN1 bWVzIHRoZSBieXRlcyBpbiB0aGUgYWRkcmVzc2VkIHdvcmQuIFNDLlcgY29uZGl0aW9uYWxseSB3 cml0ZXMgYQo+ID4gPiB3b3JkIGluIHJzMiB0byB0aGUgYWRkcmVzcyBpbiByczE6IHRoZSBTQy5X IHN1Y2NlZWRzIG9ubHkgaWYgdGhlCj4gPiA+IHJlc2VydmF0aW9uIGlzIHN0aWxsIHZhbGlkIGFu ZCB0aGUgcmVzZXJ2YXRpb24gc2V0IGNvbnRhaW5zIHRoZSBieXRlcwo+ID4gPiBiZWluZyB3cml0 dGVuLiBJZiB0aGUgU0MuVyBzdWNjZWVkcywgdGhlIGluc3RydWN0aW9uIHdyaXRlcyB0aGUgd29y ZAo+ID4gPiBpbiByczIgdG8gbWVtb3J5LCBhbmQgaXQgd3JpdGVzIHplcm8gdG8gcmQuIElmIHRo ZSBTQy5XIGZhaWxzLCB0aGUKPiA+ID4gaW5zdHJ1Y3Rpb24gZG9lcyBub3Qgd3JpdGUgdG8gbWVt b3J5LCBhbmQgaXQgd3JpdGVzIGEgbm9uemVybyB2YWx1ZSB0bwo+ID4gPiByZC4gUmVnYXJkbGVz cyBvZiBzdWNjZXNzIG9yIGZhaWx1cmUsIGV4ZWN1dGluZyBhbiBTQy5XIGluc3RydWN0aW9uCj4g PiA+ICppbnZhbGlkYXRlcyBhbnkgcmVzZXJ2YXRpb24gaGVsZCBieSB0aGlzIGhhcnQqLgo+ID4g Pgo+ID4gPiBNb3JlIGRldGFpbHMsIHJlZjoKPiA+ID4gaHR0cHM6Ly9naXRodWIuY29tL3Jpc2N2 L3Jpc2N2LWlzYS1tYW51YWwKPiA+Cj4gPiBJIHRoaW5rIHNlY3Rpb24gIjMuNS4zLjIgUmVzZXJ2 YWJpbGl0eSBQTUEiIFsxXSB3b3VsZCBiZSBhIG1vcmUgcmVsZXZhbnQKPiA+IGxpbmssIGFzIHRo aXMgZGVmaW5lcyBtZW1vcnkgYXJlYXMgdGhhdCBlaXRoZXIgZG8gb3IgZG8gbm90IGhhdmUKPiA+ IGZvcndhcmQgcHJvZ3Jlc3MgZ3VhcmFudGVlcywgaW5jbHVkaW5nIHRoaXMgcGFydDoKPiA+Cj4g PiAgICAiV2hlbiBMUi9TQyBpcyB1c2VkIGZvciBtZW1vcnkgbG9jYXRpb25zIG1hcmtlZCBSc3J2 Tm9uRXZlbnR1YWwsCj4gPiAgICAgIHNvZnR3YXJlIHNob3VsZCBwcm92aWRlIGFsdGVybmF0aXZl IGZhbGwtYmFjayBtZWNoYW5pc21zIHVzZWQgd2hlbgo+ID4gICAgICBsYWNrIG9mIHByb2dyZXNz IGlzIGRldGVjdGVkLiIKPiA+Cj4gPiBNeSByZWFkaW5nIG9mIHRoaXMgaXMgdGhhdCBpZiB0aGUg ZXhhbXBsZSB5b3UgdHJpZWQgc3RhbGxzLCB0aGVuIGVpdGhlcgo+ID4gdGhlIFBNQSBpcyBub3Qg UnNydkV2ZW50dWFsLCBhbmQgaXQgaXMgd3JvbmcgdG8gcmVseSBvbiBsbC9zYyBvbiB0aGlzLAo+ ID4gb3IgdGhhdCB0aGUgUE1BIGlzIG1hcmtlZCBSc3J2RXZlbnR1YWwgYnV0IHRoZSBpbXBsZW1l bnRhdGlvbiBpcwo+ID4gYnVnZ3kuCj4gWWVzLCBQTUEganVzdCBkZWZpbmVzIHBoeXNpY2FsIG1l bW9yeSByZWdpb24gYXR0cmlidXRlcywgQnV0IGluIG91cgo+IHByb2Nlc3Nvciwgd2hlbiBNTVUg aXMgZW5hYmxlZCAoc2F0cCdzIHZhbHVlIHJlZ2lzdGVyID4gMikgaW4gcy1tb2RlLAo+IGl0IHdp bGwgbG9vayBhdCBvdXIgY3VzdG9tIFBURSdzIGF0dHJpYnV0ZXMgQklUKDYzKSByZWYgWzFdOgo+ Cj4gICAgUFRFIGZvcm1hdDoKPiAgICB8IDYzIHwgNjIgfCA2MSB8IDYwIHwgNTkgfCA1OC04IHwg NyB8IDYgfCA1IHwgNCB8IDMgfCAyIHwgMSB8IDAKPiAgICAgIFNPICAgQyAgICBCICAgIFNIICAg U0UgICAgUlNXICAgRCAgIEEgICBHICAgVSAgIFggICBXICAgUiAgIFYKPiAgICAgIF4gICAgXiAg ICBeICAgIF4gICAgXgo+ICAgIEJJVCg2Myk6IFNPIC0gU3Ryb25nIE9yZGVyCj4gICAgQklUKDYy KTogQyAgLSBDYWNoZWFibGUKPiAgICBCSVQoNjEpOiBCICAtIEJ1ZmZlcmFibGUKPiAgICBCSVQo NjApOiBTSCAtIFNoYXJlYWJsZQo+ICAgIEJJVCg1OSk6IFNFIC0gU2VjdXJpdHkKPgo+IFNvIHRo ZSBtZW1vcnkgYWxzbyBjb3VsZCBiZSBSc3J2Tm9uZS9Sc3J2RXZlbnR1YWwuCj4KPiBbMV0gaHR0 cHM6Ly9naXRodWIuY29tL2Mtc2t5L2Nza3ktbGludXgvY29tbWl0L2U4MzdhYWQyMzE0ODU0Mjc3 MTc5NGQ4YTJmY2M1MmFmZDBmY2JmODgKCklzIHRoaXMgYWJvdXQgeW91ciBDLXNreSBhcmNoaXRl Y3R1cmUgb3IgeW91ciBSSVNDLVYgaW1wbGVtZW50YXRpb24uCgpJZiB0aGVzZSBQVEUgYml0cyBh cmUgaW4geW91ciBSSVNDLVYgaW1wbGVtZW50YXRpb24gdGhlbiBjbGVhcmx5IHlvdXIKUklTQy1W IGltcGxlbWVudGF0aW9uIGlzIG5vdCBjb21wbGlhbnQgd2l0aCB0aGUgUklTQy1WIHByaXZpbGVn ZSBzcGVjCmJlY2F1c2UgdGhlc2UgYml0cyBhcmUgbm90IGRlZmluZWQgaW4gUklTQy1WIHByaXZp bGVnZSBzcGVjLgoKUmVnYXJkcywKQW51cAo+Cj4gPgo+ID4gSXQgYWxzbyBzZWVtcyB0aGF0IHRo ZSBjdXJyZW50ICJhbW9zd2FwIiBiYXNlZCBpbXBsZW1lbnRhdGlvbgo+ID4gd291bGQgYmUgcmVs aWFibGUgaW5kZXBlbmRlbnQgb2YgUnNydkV2ZW50dWFsL1JzcnZOb25FdmVudHVhbC4KPiBZZXMs IHRoZSBoYXJkd2FyZSBpbXBsZW1lbnRhdGlvbiBvZiBBTU8gY291bGQgYmUgZGlmZmVyZW50IGZy b20gTFIvU0MuCj4gQU1PIGNvdWxkIHVzZSBBQ0Ugc25vb3AgaG9sZGluZyB0byBsb2NrIHRoZSBi dXMgaW4gaHcgY29oZXJlbmN5Cj4gZGVzaWduLCBidXQgTFIvU0MgdXNlcyBhbiBleGNsdXNpdmUg bW9uaXRvciB3aXRob3V0IGxvY2tpbmcgdGhlIGJ1cy4KPgo+ID4gYXJtNjQgaXMgYWxyZWFkeSBp biB0aGUgc2l0dWF0aW9uIG9mIGhhdmluZyB0byBjaG9vc2UgYmV0d2Vlbgo+ID4gdHdvIGNtcHhj aGcoKSBpbXBsZW1lbnRhdGlvbiBhdCBydW50aW1lIHRvIGFsbG93IGZhbGxpbmcgYmFjayB0bwo+ ID4gYSBzbG93ZXIgYnV0IG1vcmUgZ2VuZXJhbCB2ZXJzaW9uLCBidXQgaXQncyBiZXN0IHRvIGF2 b2lkIHRoYXQgaWYgeW91Cj4gPiBjYW4uCj4gQ3VycmVudCBSSVNDLVYgbmVlZG4ndCBtdWx0aXBs ZSB2ZXJzaW9ucyB0byBzZWxlY3QsIGFuZCBhbGwgQU1PICYKPiBMUi9TQyBoYXMgYmVlbiBkZWZp bmVkIGluIHRoZSBzcGVjLgo+Cj4gUklTQy1WIGhhc24ndCBDQVMgaW5zdHJ1Y3Rpb25zLCBhbmQg aXQgdXNlcyBMUi9TQyBmb3IgY21weGNoZy4gSSBkb24ndAo+IHRoaW5rIExSL1NDIHdvdWxkIGJl IHNsb3dlciB0aGFuIENBUywgYW5kIENBUyBpcyBqdXN0IGdvb2QgZm9yIGNvZGUKPiBzaXplLgo+ Cj4gPgo+ID4gICAgICAgICAgQXJuZAo+ID4KPiA+IFsxXSBodHRwOi8vd3d3LmZpdmUtZW1iZWRk ZXYuY29tL3Jpc2N2LWlzYS1tYW51YWwvbGF0ZXN0L21hY2hpbmUuaHRtbCNhdG9taWNpdHktcG1h cwo+Cj4gLS0KPiBCZXN0IFJlZ2FyZHMKPiAgR3VvIFJlbgo+Cj4gTUw6IGh0dHBzOi8vbG9yZS5r ZXJuZWwub3JnL2xpbnV4LWNza3kvCgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fXwpsaW51eC1yaXNjdiBtYWlsaW5nIGxpc3QKbGludXgtcmlzY3ZAbGlzdHMu aW5mcmFkZWFkLm9yZwpodHRwOi8vbGlzdHMuaW5mcmFkZWFkLm9yZy9tYWlsbWFuL2xpc3RpbmZv L2xpbnV4LXJpc2N2Cg==