From mboxrd@z Thu Jan 1 00:00:00 1970 From: Joonas Lahtinen Subject: Re: [PATCH] [RFC] kernel/cpu: Use lockref for online CPU reference counting Date: Tue, 16 Feb 2016 12:51:03 +0200 Message-ID: <1455619863.4977.29.camel@linux.intel.com> References: <1455539803-13913-1-git-send-email-joonas.lahtinen@linux.intel.com> <20160215141755.GG6357@twins.programming.kicks-ass.net> <20160215170618.GL6375@twins.programming.kicks-ass.net> <1455612576.4977.11.camel@linux.intel.com> <20160216091440.GT6357@twins.programming.kicks-ass.net> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by gabe.freedesktop.org (Postfix) with ESMTP id B4A9E6E781 for ; Tue, 16 Feb 2016 10:51:10 +0000 (UTC) In-Reply-To: <20160216091440.GT6357@twins.programming.kicks-ass.net> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: Peter Zijlstra Cc: "Gautham R. Shenoy" , Intel graphics driver community testing & development , Linux kernel development , David Hildenbrand , "Paul E. McKenney" , Ingo Molnar List-Id: intel-gfx@lists.freedesktop.org T24gdGksIDIwMTYtMDItMTYgYXQgMTA6MTQgKzAxMDAsIFBldGVyIFppamxzdHJhIHdyb3RlOgo+ IE9uIFR1ZSwgRmViIDE2LCAyMDE2IGF0IDEwOjQ5OjM2QU0gKzAyMDAsIEpvb25hcyBMYWh0aW5l biB3cm90ZToKPiA+IEkgb3JpZ2luYWxseSB0aG91Z2h0IG9mIGltcGxlbWVudGluZyB0aGlzIG1v cmUgc2ltaWxhciB0byB3aGF0IHlvdQo+ID4gc3BlY2lmeSwgYnV0IHRoZW4gSSBjYW1lIGFjcm9z cyBhIGRpc2N1c3Npb24gaW4gdGhlIG1haWxpbmcgbGlzdCB3aGVyZQo+ID4gaXQgd2FzIE5BS2Vk IGFkZGluZyBtb3JlIG1lbWJlcnMgdG8gdGFza19zdHJ1Y3Q7Cj4gPiAKPiA+IGh0dHA6Ly9jb21t ZW50cy5nbWFuZS5vcmcvZ21hbmUubGludXgua2VybmVsLzk3MDI3Mwo+ID4gCj4gPiBBZGRpbmcg cHJvcGVyIHJlY3Vyc2lvbiAodGhlIHdheSBteSBpbml0aWFsIGltcGxlbWVudGF0aW9uIHdhcyBn b2luZykKPiA+IGdvdCB1Z2x5IHdpdGhvdXQgbW9kaWZ5aW5nIHRhc2tfc3RydWN0IGJlY2F1c2XC oGdldF9vbmxpbmVfY3B1cygpIGlzIGEKPiA+IHNwZWVkIGNyaXRpY2FsIGNvZGUgcGF0aC4KPiAK PiBZZWFoLCBqdXN0IGRvbid0IGxldCBMaW51cyBoZWFyIHlvdSBzYXkgdGhhdC4gZ2V0X29ubGlu ZV9jcHVzKCkgaXMgX25vdF8KPiBjb25zaWRlcmVkIHBlcmZvcm1hbmNlIGNyaXRpY2FsLgoKT2gg d2VsbCwgYXQgbGVhc3QgY2hhbmdlcyB0byBpdCBhZGRlZCBxdWl0ZSBub3RpY2VhYmx5IHRvIHRo ZSBib290dXAKdGltZSBvZiBhIHN5c3RlbS4KCj4gCj4gPiBTbyBJJ20gYWxsIGZvciBmaXhpbmcg dGhlIGN1cnJlbnQgY29kZSBpbiBhIGRpZmZlcmVudCB3YXkgaWYgdGhhdCB3aWxsCj4gPiB0aGVu IGJlIG1lcmdlZC4KPiAKPiBTbyBJJ20gbm90IHN1cmUgd2h5IHlvdSdyZSBwb2tpbmcgYXQgdGhp cyBob3Jyb3Igc2hvdyB0byBiZWdpbiB3aXRoLgo+IElTVFIgeW91IG1lbnRpb25pbmcgYSBsb2Nr ZGVwIHNwbGF0IGZvciBTS0wsIGJ1dCBmYWlsZWQgdG8gcHJvdmlkZQo+IGRldGFpbC4KPiAKClF1 b3RpbmcgbXkgb3JpZ2luYWwgcGF0Y2g7CgoiU2VlIHRoZSBCdWd6aWxsYSBsaW5rIGZvciBtb3Jl IGRldGFpbHMuCgpCdWd6aWxsYTogaHR0cHM6Ly9idWdzLmZyZWVkZXNrdG9wLm9yZy9zaG93X2J1 Zy5jZ2k/aWQ9OTMyOTQiCgpUaGUgaW1wcm92ZW1lbnQgbXkgcGF0Y2ggaW1wbGVtZW50cyBpcyB0 byB1c2UgbG9ja3JlZiBmb3IgbG9ja2VkCnJlZmVyZW5jZSBjb3VudGluZyAoaG90cGx1ZyBjb2Rl IHByZXZpb3VzbHkgcm9sbGVkIGl0cyBvd24gbXV0ZXggKwphdG9taWMgY29tYm8pLCB3aGljaCBn ZXRzIHJpZCBvZiB0aGUgZGVhZGxvY2sgc2NlbmFyaW8gZGVzY3JpYmVkIGFuZApsaW5rZWQgaW4g dGhlIGluaXRpYWwgcGF0Y2guIFRyYWNlIGZvciB0aGUgc2NlbmFyaW87CgpodHRwczovL2J1Z3Mu ZnJlZWRlc2t0b3Aub3JnL2F0dGFjaG1lbnQuY2dpP2lkPTEyMTQ5MAoKSSB0aGluayB1c2luZyBs b2NrcmVmIG1ha2VzIGl0IHN1YnN0YW50aWFsbHkgbGVzcyBzcGVjaWFsLCBsb2NrcmVmIGNvZGUK YmVpbmcgYSBsb3QgbW9yZSBiYXR0bGUtdGVzdGVkIGluIHRoZSBGUyBjb2RlIHRoYW4gdGhlIHBy ZXZpb3VzCmNwdV9ob3RwbHVnLmxvY2sgbWVzcy4KCj4gTWFraW5nIHRoZSBob3RwbHVnIGxvY2sg X21vcmVfIHNwZWNpYWwgdG8gZml4IHRoYXQgaXMganVzdCB3cm9uZy4gRml4Cj4gdGhlIHJldGFy ZGVkIGxvY2tpbmcgdGhhdCBsZWFkIHRvIGl0Lgo+IAoKSSBkbyBhZ3JlZSB0aGF0IGl0J3Mgc3Rp bGwgbm90IHByZXR0eSwgYnV0IG5vdyBpdCBkb2VzIGNvcnJlY3RseSB3aGF0CnRoZSBwcmV2aW91 cyBjb2RlIHdhcyB0cnlpbmcgdG8gZG8gd2l0aCBjdXN0b20gbXV0ZXggKyBhdG9taWMuCgpJJ20g YWxsIGZvciBmaXhpbmcgdGhlIGNvZGUgZnVydGhlciwgYnV0IHByaW9yIHRvIHByb2NlZWRpbmcg dGhlcmUKbmVlZHMgdG8gYmUgc29tZSBzb3J0IG9mIGFuIGFncmVlbWVudCBvbiBlaXRoZXIgbWFr aW5nCmdldF9vbmxpbmVfY3B1cygpIHNsb3dlciAod2hpY2ggZG9lcyBub3Qgc2VlbSBsaWtlIGEg Z29vZCBpZGVhKSBvcgphZGRpbmcgbW9yZSBtZW1iZXJzIHRvIHRhc2tfc3RydWN0LgoKUmVnYXJk cywgSm9vbmFzCgo+IAotLSAKSm9vbmFzIExhaHRpbmVuCk9wZW4gU291cmNlIFRlY2hub2xvZ3kg Q2VudGVyCkludGVsIENvcnBvcmF0aW9uCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fCkludGVsLWdmeCBtYWlsaW5nIGxpc3QKSW50ZWwtZ2Z4QGxpc3RzLmZy ZWVkZXNrdG9wLm9yZwpodHRwczovL2xpc3RzLmZyZWVkZXNrdG9wLm9yZy9tYWlsbWFuL2xpc3Rp bmZvL2ludGVsLWdmeAo=