From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tvrtko Ursulin Subject: Re: [PATCH] drm/i915: Lock out execlist tasklet while peeking inside for busy-stats Date: Mon, 15 Jan 2018 09:56:12 +0000 Message-ID: <87519b0e-f0cc-44ee-71c5-8ee528df8fd0@linux.intel.com> References: <20180115092041.13509-1-chris@chris-wilson.co.uk> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8"; Format="flowed" Content-Transfer-Encoding: base64 Return-path: Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by gabe.freedesktop.org (Postfix) with ESMTPS id 12D7689F24 for ; Mon, 15 Jan 2018 09:56:17 +0000 (UTC) In-Reply-To: <20180115092041.13509-1-chris@chris-wilson.co.uk> Content-Language: en-GB List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: Chris Wilson , intel-gfx@lists.freedesktop.org List-Id: intel-gfx@lists.freedesktop.org Ck9uIDE1LzAxLzIwMTggMDk6MjAsIENocmlzIFdpbHNvbiB3cm90ZToKPiBJbiBvcmRlciB0byBw cmV2ZW50IGEgcmFjZSBjb25kaXRpb24gd2hlcmUgd2UgbWF5IGVuZCB1cCBvdmVyYWNjb3VudGlu Zwo+IHRoZSBhY3RpdmUgc3RhdGUgYW5kIGxlYXZpbmcgdGhlIGJ1c3ktc3RhdHMgYmVsaWV2aW5n IHRoZSBHUFUgaXMgMTAwJQo+IGJ1c3ksIGxvY2sgb3V0IHRoZSB0YXNrbGV0IHdoaWxlIHdlIHJl Y29uc3RydWN0IHRoZSBidXN5IHN0YXRlLiBUaGVyZSBpcwo+IG5vIGRpcmVjdCBzcGlubG9jayBn dWFyZCBmb3IgdGhlIGV4ZWNsaXN0cy0+cG9ydFtdLCBzbyB3ZSBuZWVkIHRvCj4gdXRpbGlzZSB0 YXNrbGV0X2Rpc2FibGUoKSBhcyBhIHN5bmNocm9ub3VzIGJhcnJpZXIgdG8gcHJldmVudCB0aGUg b25seQo+IHdyaXRlciB0byBleGVjbGlzdHMtPnBvcnRbXSBmcm9tIHJ1bm5pbmcgYXQgdGhlIHNh bWUgdGltZSBhcyB0aGUgZW5hYmxlLgo+IAo+IEZpeGVzOiA0OTAwNzI3ZDM1YmIgKCJkcm0vaTkx NS9wbXU6IFJlY29uc3RydWN0IGFjdGl2ZSBzdGF0ZSBvbiBzdGFydGluZyBidXN5LXN0YXRzIikK PiBTaWduZWQtb2ZmLWJ5OiBDaHJpcyBXaWxzb24gPGNocmlzQGNocmlzLXdpbHNvbi5jby51az4K PiBDYzogVHZydGtvIFVyc3VsaW4gPHR2cnRrby51cnN1bGluQGludGVsLmNvbT4KPiAtLS0KPiAg IGRyaXZlcnMvZ3B1L2RybS9pOTE1L2ludGVsX2VuZ2luZV9jcy5jIHwgMjAgKysrKysrKysrKysr LS0tLS0tLS0KPiAgIDEgZmlsZSBjaGFuZ2VkLCAxMiBpbnNlcnRpb25zKCspLCA4IGRlbGV0aW9u cygtKQo+IAo+IGRpZmYgLS1naXQgYS9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pbnRlbF9lbmdpbmVf Y3MuYyBiL2RyaXZlcnMvZ3B1L2RybS9pOTE1L2ludGVsX2VuZ2luZV9jcy5jCj4gaW5kZXggZDc5 MGJkYzIyN2ZmLi5iMjIxNjEwZjIzNjUgMTAwNjQ0Cj4gLS0tIGEvZHJpdmVycy9ncHUvZHJtL2k5 MTUvaW50ZWxfZW5naW5lX2NzLmMKPiArKysgYi9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pbnRlbF9l bmdpbmVfY3MuYwo+IEBAIC0xOTQzLDE2ICsxOTQzLDIyIEBAIGludGVsX2VuZ2luZV9sb29rdXBf dXNlcihzdHJ1Y3QgZHJtX2k5MTVfcHJpdmF0ZSAqaTkxNSwgdTggY2xhc3MsIHU4IGluc3RhbmNl KQo+ICAgICovCj4gICBpbnQgaW50ZWxfZW5hYmxlX2VuZ2luZV9zdGF0cyhzdHJ1Y3QgaW50ZWxf ZW5naW5lX2NzICplbmdpbmUpCj4gICB7Cj4gKwlzdHJ1Y3QgaW50ZWxfZW5naW5lX2V4ZWNsaXN0 cyAqZXhlY2xpc3RzID0gJmVuZ2luZS0+ZXhlY2xpc3RzOwo+ICAgCXVuc2lnbmVkIGxvbmcgZmxh Z3M7Cj4gKwlpbnQgZXJyID0gMDsKPiAgIAo+ICAgCWlmICghaW50ZWxfZW5naW5lX3N1cHBvcnRz X3N0YXRzKGVuZ2luZSkpCj4gICAJCXJldHVybiAtRU5PREVWOwo+ICAgCj4gKwl0YXNrbGV0X2Rp c2FibGUoJmV4ZWNsaXN0cy0+dGFza2xldCk7Cj4gICAJc3Bpbl9sb2NrX2lycXNhdmUoJmVuZ2lu ZS0+c3RhdHMubG9jaywgZmxhZ3MpOwo+IC0JaWYgKGVuZ2luZS0+c3RhdHMuZW5hYmxlZCA9PSB+ MCkKPiAtCQlnb3RvIGJ1c3k7Cj4gKwo+ICsJaWYgKHVubGlrZWx5KGVuZ2luZS0+c3RhdHMuZW5h YmxlZCA9PSB+MCkpIHsKPiArCQllcnIgPSAtRUJVU1k7Cj4gKwkJZ290byB1bmxvY2s7Cj4gKwl9 Cj4gKwo+ICAgCWlmIChlbmdpbmUtPnN0YXRzLmVuYWJsZWQrKyA9PSAwKSB7Cj4gLQkJc3RydWN0 IGludGVsX2VuZ2luZV9leGVjbGlzdHMgKmV4ZWNsaXN0cyA9ICZlbmdpbmUtPmV4ZWNsaXN0czsK PiAgIAkJY29uc3Qgc3RydWN0IGV4ZWNsaXN0X3BvcnQgKnBvcnQgPSBleGVjbGlzdHMtPnBvcnQ7 Cj4gICAJCXVuc2lnbmVkIGludCBudW1fcG9ydHMgPSBleGVjbGlzdHNfbnVtX3BvcnRzKGV4ZWNs aXN0cyk7Cj4gICAKPiBAQCAtMTk2NywxNCArMTk3MywxMiBAQCBpbnQgaW50ZWxfZW5hYmxlX2Vu Z2luZV9zdGF0cyhzdHJ1Y3QgaW50ZWxfZW5naW5lX2NzICplbmdpbmUpCj4gICAJCWlmIChlbmdp bmUtPnN0YXRzLmFjdGl2ZSkKPiAgIAkJCWVuZ2luZS0+c3RhdHMuc3RhcnQgPSBlbmdpbmUtPnN0 YXRzLmVuYWJsZWRfYXQ7Cj4gICAJfQo+IC0Jc3Bpbl91bmxvY2tfaXJxcmVzdG9yZSgmZW5naW5l LT5zdGF0cy5sb2NrLCBmbGFncyk7Cj4gICAKPiAtCXJldHVybiAwOwo+IC0KPiAtYnVzeToKPiAr dW5sb2NrOgo+ICAgCXNwaW5fdW5sb2NrX2lycXJlc3RvcmUoJmVuZ2luZS0+c3RhdHMubG9jaywg ZmxhZ3MpOwo+ICsJdGFza2xldF9lbmFibGUoJmV4ZWNsaXN0cy0+dGFza2xldCk7Cj4gICAKPiAt CXJldHVybiAtRUJVU1k7Cj4gKwlyZXR1cm4gZXJyOwo+ICAgfQo+ICAgCj4gICBzdGF0aWMga3Rp bWVfdCBfX2ludGVsX2VuZ2luZV9nZXRfYnVzeV90aW1lKHN0cnVjdCBpbnRlbF9lbmdpbmVfY3Mg KmVuZ2luZSkKPiAKCkhvcGVmdWxseSB0aGUgZW5kIG9mIHRoZSBpbW1lZGlhdGUgdHJvdWJsZSwg d2l0aCBvbmx5IGJlYXV0aWZpY2F0aW9uIApyZW1haW5pbmcuCgpSZXZpZXdlZC1ieTogVHZydGtv IFVyc3VsaW4gPHR2cnRrby51cnN1bGluQGludGVsLmNvbT4KClJlZ2FyZHMsCgpUdnJ0a28KX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KSW50ZWwtZ2Z4IG1h aWxpbmcgbGlzdApJbnRlbC1nZnhAbGlzdHMuZnJlZWRlc2t0b3Aub3JnCmh0dHBzOi8vbGlzdHMu ZnJlZWRlc2t0b3Aub3JnL21haWxtYW4vbGlzdGluZm8vaW50ZWwtZ2Z4Cg==