From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Laight Subject: RE: [PATCH v2 0/5] locking: Introduce local{,64}_try_cmpxchg Date: Tue, 11 Apr 2023 21:34:35 +0000 Message-ID: References: <20230405141710.3551-1-ubizjak@gmail.com> <7360ffd2-a5aa-1373-8309-93e71ff36cbb@intel.com> <1fee0372-3a3b-5e09-38c3-ffb3523fe195@intel.com> Mime-Version: 1.0 Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <1fee0372-3a3b-5e09-38c3-ffb3523fe195@intel.com> Content-Language: en-US List-ID: Content-Type: text/plain; charset="us-ascii" To: 'Dave Hansen' , Mark Rutland Cc: Uros Bizjak , "linux-alpha@vger.kernel.org" , "loongarch@lists.linux.dev" , "linux-mips@vger.kernel.org" , "linuxppc-dev@lists.ozlabs.org" , "x86@kernel.org" , "linux-arch@vger.kernel.org" , "linux-perf-users@vger.kernel.org" , "linux-kernel@vger.kernel.org" , Richard Henderson , Ivan Kokshaysky , Matt Turner , Huacai Chen , WANG Xuerui , Thomas Bogendoerfer , Michael Ellerman RnJvbTogRGF2ZSBIYW5zZW4NCj4gU2VudDogMTEgQXByaWwgMjAyMyAxNDo0NA0KPiANCj4gT24g NC8xMS8yMyAwNDozNSwgTWFyayBSdXRsYW5kIHdyb3RlOg0KPiA+IEkgYWdyZWUgaXQnZCBiZSBu aWNlIHRvIGhhdmUgcGVyZm9ybWFuY2UgZmlndXJlcywgYnV0IEkgdGhpbmsgdGhvc2Ugd291bGQg b25seQ0KPiA+IG5lZWQgdG8gZGVtb25zdHJhdGUgYSBsYWNrIG9mIGEgcmVncmVzc2lvbiByYXRo ZXIgdGhhbiBhIHBlcmZvcm1hbmNlDQo+ID4gaW1wcm92ZW1lbnQsIGFuZCBJIHRoaW5rIGl0J3Mg ZmFpcmx5IGNsZWFyIGZyb20gZXllYmFsbGluZyB0aGUgZ2VuZXJhdGVkDQo+ID4gaW5zdHJ1Y3Rp b25zIHRoYXQgYSByZWdyZXNzaW9uIGlzbid0IGxpa2VseS4NCj4gDQo+IFRoYW5rcyBmb3IgdGhl IGFkZGl0aW9uYWwgY29udGV4dC4NCj4gDQo+IEkgdG90YWxseSBhZ3JlZSB0aGF0IHRoZXJlJ3Mg emVybyBidXJkZW4gaGVyZSB0byBzaG93IGEgcGVyZm9ybWFuY2UNCj4gaW5jcmVhc2UuICBJZiBh bnlvbmUgY2FuIHRoaW5rIG9mIGEgcXVpY2sgd2F5IHRvIGRvIF9zb21lXyBraW5kIG9mDQo+IGJl bmNobWFyayBvbiB0aGUgY29kZSBiZWluZyBjaGFuZ2VkIGFuZCBqdXN0IHNob3cgdGhhdCBpdCdz IGZyZWUgb2YNCj4gYnJvd24gcGFwZXIgYmFncywgaXQgd291bGQgYmUgYXBwcmVjaWF0ZWQuICBO b3RoaW5nIGNyYXp5LCBqdXN0IHRoaW5rIG9mDQo+IG9uZSB3b3JrbG9hZCAoc3ludGhldGljIG9y IG5vdCkgdGhhdCB3aWxsIHN0cmVzcyB0aGUgcGF0aHMgYmVpbmcgY2hhbmdlZA0KPiBhbmQgcnVu IGl0IHdpdGggYW5kIHdpdGhvdXQgdGhlc2UgY2hhbmdlcy4gIE1ha2Ugc3VyZSB0aGVyZSBhcmUg bm90DQo+IHN1cnByaXNlcy4NCj4gDQo+IEkgYWxzbyBhZ3JlZSB0aGF0IGl0J3MgdW5saWtlbHkg dG8gYmUgYnJvd24gcGFwZXIgYmFnIG1hdGVyaWFsLg0KDQpUaGUgb25seSB0aGluZyBJIGNhbiB0 aGluayBvZiBpcyB0aGF0LCBvbiB4ODYsIHRoZSBsb2NrZWQNCnZhcmlhbnQgbWF5IGFjdHVhbGx5 IGJlIGZhc3RlciENCkJvdGggcmVxdWlyZSBleGNsdXNpdmUgYWNjZXNzIHRvIHRoZSBjYWNoZSBs aW5lICh0aGUgdW5sb2NrZWQNCnZhcmlhbnQgYWx3YXlzIGRvZXMgdGhlIHdyaXRlISBbMV0pLg0K U28gaWYgdGhlIGNhY2hlIGxpbmUgaXMgY29udGVuZGVkIGJldHdlZW4gY3B1IHRoZSB1bmxvY2tl ZA0KdmFyaWFudCBtaWdodCBwaW5nLXBvbmcgdGhlIGNhY2hlIGxpbmUgdHdpY2UhDQpPZiBjb3Vy c2UsIGlmIHRoZSBsaW5lIGlzIHNoYXJlZCBsaWtlIHRoYXQgdGhlbiBwZXJmb3JtYW5jZQ0KaXMg aG9ycmlkLg0KDQpbMV0gSSBjaGVja2VkIG9uIGFuIHVuY2FjaGVkIFBDSWUgYWRkcmVzcyBvbiB3 aGljaCBJIGNhbiBtb25pdG9yDQp0aGUgVExQLiBUaGUgd3JpdGUgYWx3YXlzIGhhcHBlbnMgc28g eW91IGNhbiB1c2UgY21weGNoZzE4Yg0Kd2l0aCBhICdrbm93biBiYWQgdmFsdWUnIHRvIGRvIGEg MTYgYnl0ZSByZWFkIGFzIGEgc2luZ2xlIFRMUA0KKHdpdGhvdXQgdXNpbmcgYW4gU1NFIHJlZ2lz dGVyKS4NCg0KCURhdmlkDQoNCi0NClJlZ2lzdGVyZWQgQWRkcmVzcyBMYWtlc2lkZSwgQnJhbWxl eSBSb2FkLCBNb3VudCBGYXJtLCBNaWx0b24gS2V5bmVzLCBNSzEgMVBULCBVSw0KUmVnaXN0cmF0 aW9uIE5vOiAxMzk3Mzg2IChXYWxlcykNCg==