From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tarun Vyas Subject: Re: [PATCH v2] drm/i915/psr: Lockless version of psr_wait_for_idle Date: Fri, 22 Jun 2018 00:26:11 -0700 Message-ID: <20180622072611.GA100656@otc-chromeosbuild-5> References: <20180622070521.169995-1-tarun.vyas@intel.com> <152965152021.11773.5068265014048597906@mail.alporthouse.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from mga18.intel.com (mga18.intel.com [134.134.136.126]) by gabe.freedesktop.org (Postfix) with ESMTPS id 4EA9F6E044 for ; Fri, 22 Jun 2018 07:26:12 +0000 (UTC) Content-Disposition: inline In-Reply-To: <152965152021.11773.5068265014048597906@mail.alporthouse.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: Chris Wilson Cc: intel-gfx@lists.freedesktop.org, dhinakaran.pandiyan@intel.com, rodrigo.vivi@intel.com List-Id: intel-gfx@lists.freedesktop.org T24gRnJpLCBKdW4gMjIsIDIwMTggYXQgMDg6MTI6MDBBTSArMDEwMCwgQ2hyaXMgV2lsc29uIHdy b3RlOgo+IFF1b3RpbmcgVGFydW4gVnlhcyAoMjAxOC0wNi0yMiAwODowNToyMSkKPiA+IFRoaXMg aXMgYSBsb2NrbGVzcyB2ZXJzaW9uIG9mIHRoZSBleGlzaXRpbmcgcHNyX3dhaXRfZm9yX2lkbGUo KS4KPiA+IFdlIHdhbnQgdG8gd2FpdCBmb3IgUFNSIHRvIGlkbGUgb3V0IGluc2lkZSBpbnRlbF9w aXBlX3VwZGF0ZV9zdGFydC4KPiA+IEF0IHRoZSB0aW1lIG9mIGEgcGlwZSB1cGRhdGUsIHdlIHNo b3VsZCBuZXZlciByYWNlIHdpdGggYW55IHBzcgo+ID4gZW5hYmxlIG9yIGRpc2FibGUgY29kZSwg d2hpY2ggaXMgYSBwYXJ0IG9mIGNydGMgZW5hYmxlL2Rpc2FibGUuIFNvLAo+ID4gd2UgY2FuIGxp dmUgdy9vIHRha2luZyBhbnkgcHNyIGxvY2tzIGF0IGFsbC4KPiA+IFRoZSBmb2xsb3cgdXAgcGF0 Y2ggd2lsbCB1c2UgdGhpcyBsb2NrbGVzcyB3YWl0IGluc2lkZSBwaXBlX3VwZGF0ZV8KPiA+IHN0 YXJ0IHRvIHdhaXQgZm9yIFBTUiB0byBpZGxlIG91dCBiZWZvcmUgY2hlY2tpbmcgZm9yIHZibGFu ayBldmFzaW9uLgo+ID4gCj4gPiBFdmVuIGlmIHBzciBpcyBuZXZlciBlbmFibGVkLCBwc3IyX2Vu YWJsZWQgd2lsbCBiZSBmYWxzZSBhbmQgdGhpcwo+ID4gZnVuY3Rpb24gd2lsbCB3YWl0IGZvciBQ U1IxIHRvIGlkbGUgb3V0LCB3aGljaCBzaG91bGQganVzdCByZXR1cm4KPiA+IGltbWVkaWF0ZWx5 LCBzbyBhIHZlcnkgc2hvcnQgKH4xLTIgdXNlYykgd2FpdCBmb3IgY2FzZXMgd2hlcmUgUFNSCj4g PiBpcyBkaXNhYmxlZC4KPiA+IAo+ID4gdjI6IEFkZCBjb21tZW50IHRvIGV4cGxhaW4gdGhlIDI1 bXNlYyB0aW1lb3V0IChESykKPiA+IAo+ID4gU2lnbmVkLW9mZi1ieTogVGFydW4gVnlhcyA8dGFy dW4udnlhc0BpbnRlbC5jb20+Cj4gPiAtLS0KPiA+ICBkcml2ZXJzL2dwdS9kcm0vaTkxNS9pbnRl bF9kcnYuaCB8ICAxICsKPiA+ICBkcml2ZXJzL2dwdS9kcm0vaTkxNS9pbnRlbF9wc3IuYyB8IDI0 ICsrKysrKysrKysrKysrKysrKysrKysrKwo+ID4gIDIgZmlsZXMgY2hhbmdlZCwgMjUgaW5zZXJ0 aW9ucygrKQo+ID4gCj4gPiBkaWZmIC0tZ2l0IGEvZHJpdmVycy9ncHUvZHJtL2k5MTUvaW50ZWxf ZHJ2LmggYi9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pbnRlbF9kcnYuaAo+ID4gaW5kZXggNTc4MzQ2 YjhkN2UyLi5hNDhhYWQwZjk5YmYgMTAwNjQ0Cj4gPiAtLS0gYS9kcml2ZXJzL2dwdS9kcm0vaTkx NS9pbnRlbF9kcnYuaAo+ID4gKysrIGIvZHJpdmVycy9ncHUvZHJtL2k5MTUvaW50ZWxfZHJ2LmgK PiA+IEBAIC0xOTIwLDYgKzE5MjAsNyBAQCB2b2lkIGludGVsX3Bzcl9jb21wdXRlX2NvbmZpZyhz dHJ1Y3QgaW50ZWxfZHAgKmludGVsX2RwLAo+ID4gICAgICAgICAgICAgICAgICAgICAgICAgICAg ICAgc3RydWN0IGludGVsX2NydGNfc3RhdGUgKmNydGNfc3RhdGUpOwo+ID4gIHZvaWQgaW50ZWxf cHNyX2lycV9jb250cm9sKHN0cnVjdCBkcm1faTkxNV9wcml2YXRlICpkZXZfcHJpdiwgYm9vbCBk ZWJ1Zyk7Cj4gPiAgdm9pZCBpbnRlbF9wc3JfaXJxX2hhbmRsZXIoc3RydWN0IGRybV9pOTE1X3By aXZhdGUgKmRldl9wcml2LCB1MzIgcHNyX2lpcik7Cj4gPiArdm9pZCBwc3Jfd2FpdF9mb3JfaWRs ZV9sb2NrbGVzcyhzdHJ1Y3QgZHJtX2k5MTVfcHJpdmF0ZSAqZGV2X3ByaXYpOwo+ID4gIAo+ID4g IC8qIGludGVsX3J1bnRpbWVfcG0uYyAqLwo+ID4gIGludCBpbnRlbF9wb3dlcl9kb21haW5zX2lu aXQoc3RydWN0IGRybV9pOTE1X3ByaXZhdGUgKik7Cj4gPiBkaWZmIC0tZ2l0IGEvZHJpdmVycy9n cHUvZHJtL2k5MTUvaW50ZWxfcHNyLmMgYi9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pbnRlbF9wc3Iu Ywo+ID4gaW5kZXggYWVhODFhY2U4NTRiLi44ZTY5ZTYxOTMwNjMgMTAwNjQ0Cj4gPiAtLS0gYS9k cml2ZXJzL2dwdS9kcm0vaTkxNS9pbnRlbF9wc3IuYwo+ID4gKysrIGIvZHJpdmVycy9ncHUvZHJt L2k5MTUvaW50ZWxfcHNyLmMKPiA+IEBAIC03NTcsNiArNzU3LDMwIEBAIHZvaWQgaW50ZWxfcHNy X2Rpc2FibGUoc3RydWN0IGludGVsX2RwICppbnRlbF9kcCwKPiA+ICAgICAgICAgY2FuY2VsX3dv cmtfc3luYygmZGV2X3ByaXYtPnBzci53b3JrKTsKPiA+ICB9Cj4gPiAgCj4gPiArdm9pZCBwc3Jf d2FpdF9mb3JfaWRsZV9sb2NrbGVzcyhzdHJ1Y3QgZHJtX2k5MTVfcHJpdmF0ZSAqZGV2X3ByaXYp Cj4gCj4gaW50ZWxfcHNyXwo+IAo+IE5vIG5lZWQgZm9yIGxvY2tsZXNzIGhlcmUgeW91IGRvbid0 IGV4cG9ydCBhbnl0aGluZyBlbHNlLiBSZW5hbWUgb25lIG9mCj4gdGhlIHR3byB0byBhdm9pZCB0 aGUgY29uZmxpY3QuIFByb2JhYmx5IF9fcHNyX3dhaXRfZm9yX2lkbGVfbG9ja2VkLAo+IHRob3Vn aCB5b3Ugd291bGQgZXhwZWN0IHNvbWUgc29ydCBvZiByZXVzZSBiZXR3ZWVuIHZlcnkgc2ltaWxh cmx5IG5hbWVkCj4gZnVuY3Rpb25zLgo+ClRoYW5rcyBmb3IgdGhlIHJldmlldyBDaHJpcy4KClll cywgdGhlcmUgaXMgYSBsb3QgZHVwbGljYXRpb24gYmV0d2VlbiB0aGUgdHdvLCBidXQgdGhlIGxv Y2tpbmcgZHJvcCBpbiBwc3Jfd2FpdF9mb3JfaWRsZSgpLCBiZWZvcmUgdGhlIHdhaXRfZm9yX3Jl Z2lzdGVyIGlzIG1ha2luZyBpdCBoYXJkZXIgdG8gcmV1c2UgaXQuCldpbGwgcmVuYW1lIHRoZSBv cmlnaW5hbCB3YWl0IGZ1bmN0aW9uLiAgCj4gPiArewo+ID4gKyAgICAgICBpOTE1X3JlZ190IHJl ZzsKPiA+ICsgICAgICAgdTMyIG1hc2s7Cj4gPiArICAgICAgIGludCBlcnI7Cj4gPiArCj4gPiAr ICAgICAgIGlmIChkZXZfcHJpdi0+cHNyLnBzcjJfZW5hYmxlZCkgewo+ID4gKyAgICAgICAgICAg ICAgIHJlZyA9IEVEUF9QU1IyX1NUQVRVUzsKPiA+ICsgICAgICAgICAgICAgICBtYXNrID0gRURQ X1BTUjJfU1RBVFVTX1NUQVRFX01BU0s7Cj4gPiArICAgICAgIH0gZWxzZSB7Cj4gPiArICAgICAg ICAgICAgICAgcmVnID0gRURQX1BTUl9TVEFUVVM7Cj4gPiArICAgICAgICAgICAgICAgbWFzayA9 IEVEUF9QU1JfU1RBVFVTX1NUQVRFX01BU0s7Cj4gPiArICAgICAgIH0KPiA+ICsKPiA+ICsgICAg ICAgLyoKPiA+ICsgICAgICAgICogVGhlICAyNSBtc2VjIHRpbWVvdXQgYWNjb3VudHMgZm9yIGEg ZnJhbWUgQCA2MEh6IHJlZnJlc2ggcmF0ZSwKPiA+ICsgICAgICAgICogZXhpdCB0cmFpbmluZyBh biBhdXggaGFuZHNoYWtlIHRpbWUuCj4gPiArICAgICAgICAqLwo+ID4gKyAgICAgICBlcnIgPSBp bnRlbF93YWl0X2Zvcl9yZWdpc3RlcihkZXZfcHJpdiwgcmVnLCBtYXNrLAo+ID4gKyAgICAgICAg ICAgICAgICAgICAgICAgICAgICAgICAgICAgICBFRFBfUFNSX1NUQVRVU19TVEFURV9JRExFLCAy NSk7Cj4gPiArICAgICAgIGlmIChlcnIpCj4gPiArICAgICAgICAgICAgICAgRFJNX0VSUk9SKCJU aW1lZCBvdXQgd2FpdGluZyBmb3IgUFNSIElkbGUgZm9yIHBpcGUgdXBkYXRlXG4iKTsKPiAKPiBQ cm9wYWdhdGUgdGhlIGVycm9yLCBsZXQgdGhlIGNhbGxlciBkZWNpZGUgaWYgaXQncyBhbiBlcnJv ciBvciBub3QuCj4gLUNocmlzYQpXaWxsIGRvLCBpbiB0aGUgbmV4dCB2ZXJzaW9uLgpfX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpJbnRlbC1nZnggbWFpbGlu ZyBsaXN0CkludGVsLWdmeEBsaXN0cy5mcmVlZGVza3RvcC5vcmcKaHR0cHM6Ly9saXN0cy5mcmVl ZGVza3RvcC5vcmcvbWFpbG1hbi9saXN0aW5mby9pbnRlbC1nZngK