From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dhinakaran Pandiyan Subject: Re: [PATCH] drm/i915/psr: Lockless version of psr_wait_for_idle Date: Thu, 21 Jun 2018 18:49:30 -0700 Message-ID: <1529632170.12516.70.camel@intel.com> References: <20180622010322.92851-1-tarun.vyas@intel.com> Reply-To: dhinakaran.pandiyan@intel.com 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 ESMTPS id 0D5076E303 for ; Fri, 22 Jun 2018 01:23:33 +0000 (UTC) In-Reply-To: <20180622010322.92851-1-tarun.vyas@intel.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: Tarun Vyas , intel-gfx@lists.freedesktop.org Cc: rodrigo.vivi@intel.com List-Id: intel-gfx@lists.freedesktop.org T24gVGh1LCAyMDE4LTA2LTIxIGF0IDE4OjAzIC0wNzAwLCBUYXJ1biBWeWFzIHdyb3RlOgo+IFRo aXMgaXMgYSBsb2NrbGVzcyB2ZXJzaW9uIG9mIHRoZSBleGlzaXRpbmcgcHNyX3dhaXRfZm9yX2lk bGUoKS4KPiBXZSB3YW50IHRvIHdhaXQgZm9yIFBTUiB0byBpZGxlIG91dCBpbnNpZGUgaW50ZWxf cGlwZV91cGRhdGVfc3RhcnQuCj4gQXQgdGhlIHRpbWUgb2YgYSBwaXBlIHVwZGF0ZSwgd2Ugc2hv dWxkIG5ldmVyIHJhY2Ugd2l0aCBhbnkgcHNyCj4gZW5hYmxlIG9yIGRpc2FibGUgY29kZSwgd2hp Y2ggaXMgYSBwYXJ0IG9mIGNydGMgZW5hYmxlL2Rpc2FibGUuIFNvLAo+IHdlIGNhbiBsaXZlIHcv byB0YWtpbmcgYW55IHBzciBsb2NrcyBhdCBhbGwuCj4gVGhlIGZvbGxvdyB1cCBwYXRjaCB3aWxs IHVzZSB0aGlzIGxvY2tsZXNzIHdhaXQgaW5zaWRlIHBpcGVfdXBkYXRlXwo+IHN0YXJ0IHRvIHdh aXQgZm9yIFBTUiB0byBpZGxlIG91dCBiZWZvcmUgY2hlY2tpbmcgZm9yIHZibGFuayBldmFzaW9u Lgo+IAo+IEV2ZW4gaWYgcHNyIGlzIG5ldmVyIGVuYWJsZWQsIHBzcjJfZW5hYmxlZCB3aWxsIGJl IGZhbHNlIGFuZCB0aGlzCj4gZnVuY3Rpb24gd2lsbCB3YWl0IGZvciBQU1IxIHRvIGlkbGUgb3V0 LCB3aGljaCBzaG91bGQganVzdCByZXR1cm4KPiBpbW1lZGlhdGVseSwgc28gYSB2ZXJ5IHNob3J0 ICh+MS0yIHVzZWMpIHdhaXQgZm9yIGNhc2VzIHdoZXJlIFBTUgo+IGlzIGRpc2FibGVkLgo+IAo+ IFNpZ25lZC1vZmYtYnk6IFRhcnVuIFZ5YXMgPHRhcnVuLnZ5YXNAaW50ZWwuY29tPgo+IC0tLQo+ IMKgZHJpdmVycy9ncHUvZHJtL2k5MTUvaW50ZWxfZHJ2LmggfMKgwqAxICsKPiDCoGRyaXZlcnMv Z3B1L2RybS9pOTE1L2ludGVsX3Bzci5jIHwgMTkgKysrKysrKysrKysrKysrKysrKwo+IMKgMiBm aWxlcyBjaGFuZ2VkLCAyMCBpbnNlcnRpb25zKCspCj4gCj4gZGlmZiAtLWdpdCBhL2RyaXZlcnMv Z3B1L2RybS9pOTE1L2ludGVsX2Rydi5oCj4gYi9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pbnRlbF9k cnYuaAo+IGluZGV4IDU3ODM0NmI4ZDdlMi4uYTQ4YWFkMGY5OWJmIDEwMDY0NAo+IC0tLSBhL2Ry aXZlcnMvZ3B1L2RybS9pOTE1L2ludGVsX2Rydi5oCj4gKysrIGIvZHJpdmVycy9ncHUvZHJtL2k5 MTUvaW50ZWxfZHJ2LmgKPiBAQCAtMTkyMCw2ICsxOTIwLDcgQEAgdm9pZCBpbnRlbF9wc3JfY29t cHV0ZV9jb25maWcoc3RydWN0IGludGVsX2RwCj4gKmludGVsX2RwLAo+IMKgCQkJwqDCoMKgwqDC oMKgc3RydWN0IGludGVsX2NydGNfc3RhdGUgKmNydGNfc3RhdGUpOwo+IMKgdm9pZCBpbnRlbF9w c3JfaXJxX2NvbnRyb2woc3RydWN0IGRybV9pOTE1X3ByaXZhdGUgKmRldl9wcml2LCBib29sCj4g ZGVidWcpOwo+IMKgdm9pZCBpbnRlbF9wc3JfaXJxX2hhbmRsZXIoc3RydWN0IGRybV9pOTE1X3By aXZhdGUgKmRldl9wcml2LCB1MzIKPiBwc3JfaWlyKTsKPiArdm9pZCBwc3Jfd2FpdF9mb3JfaWRs ZV9sb2NrbGVzcyhzdHJ1Y3QgZHJtX2k5MTVfcHJpdmF0ZSAqZGV2X3ByaXYpOwo+IMKgCj4gwqAv KiBpbnRlbF9ydW50aW1lX3BtLmMgKi8KPiDCoGludCBpbnRlbF9wb3dlcl9kb21haW5zX2luaXQo c3RydWN0IGRybV9pOTE1X3ByaXZhdGUgKik7Cj4gZGlmZiAtLWdpdCBhL2RyaXZlcnMvZ3B1L2Ry bS9pOTE1L2ludGVsX3Bzci5jCj4gYi9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pbnRlbF9wc3IuYwo+ IGluZGV4IGFlYTgxYWNlODU0Yi4uNDI1MTQ3NDQ0ZjY5IDEwMDY0NAo+IC0tLSBhL2RyaXZlcnMv Z3B1L2RybS9pOTE1L2ludGVsX3Bzci5jCj4gKysrIGIvZHJpdmVycy9ncHUvZHJtL2k5MTUvaW50 ZWxfcHNyLmMKPiBAQCAtNzU3LDYgKzc1NywyNSBAQCB2b2lkIGludGVsX3Bzcl9kaXNhYmxlKHN0 cnVjdCBpbnRlbF9kcAo+ICppbnRlbF9kcCwKPiDCoAljYW5jZWxfd29ya19zeW5jKCZkZXZfcHJp di0+cHNyLndvcmspOwo+IMKgfQo+IMKgCj4gK3ZvaWQgcHNyX3dhaXRfZm9yX2lkbGVfbG9ja2xl c3Moc3RydWN0IGRybV9pOTE1X3ByaXZhdGUgKmRldl9wcml2KQo+ICt7Cj4gKwlpOTE1X3JlZ190 IHJlZzsKPiArCXUzMiBtYXNrOwo+ICsJaW50IGVycjsKPiArCj4gKwlpZiAoZGV2X3ByaXYtPnBz ci5wc3IyX2VuYWJsZWQpIHsKPiArCQlyZWcgPSBFRFBfUFNSMl9TVEFUVVM7Cj4gKwkJbWFzayA9 IEVEUF9QU1IyX1NUQVRVU19TVEFURV9NQVNLOwo+ICsJfSBlbHNlIHsKPiArCQlyZWcgPSBFRFBf UFNSX1NUQVRVUzsKPiArCQltYXNrID0gRURQX1BTUl9TVEFUVVNfU1RBVEVfTUFTSzsKPiArCX0K PiArCj4gKwllcnIgPSBpbnRlbF93YWl0X2Zvcl9yZWdpc3RlcihkZXZfcHJpdiwgcmVnLCBtYXNr LAo+IEVEUF9QU1JfU1RBVFVTX1NUQVRFX0lETEUsIDI1KTsKQSBjb21tZW50IGV4cGxhaW5pbmcg dGhlIHJhdGlvbmFsZSBmb3IgMjUgbXMgaXMgbmVjZXNzYXJ5IGhlcmUuwqAKCj4gKwlpZiAoZXJy KQo+ICsJCURSTV9FUlJPUigiVGltZWQgb3V0IHdhaXRpbmcgZm9yIFBTUiBJZGxlIGZvciBwaXBl Cj4gdXBkYXRlXG4iKTsKPiArfQo+ICsKPiDCoHN0YXRpYyBib29sIHBzcl93YWl0X2Zvcl9pZGxl KHN0cnVjdCBkcm1faTkxNV9wcml2YXRlICpkZXZfcHJpdikKPiDCoHsKPiDCoAlzdHJ1Y3QgaW50 ZWxfZHAgKmludGVsX2RwOwpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fXwpJbnRlbC1nZnggbWFpbGluZyBsaXN0CkludGVsLWdmeEBsaXN0cy5mcmVlZGVza3Rv cC5vcmcKaHR0cHM6Ly9saXN0cy5mcmVlZGVza3RvcC5vcmcvbWFpbG1hbi9saXN0aW5mby9pbnRl bC1nZngK