From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mika Kuoppala Subject: Re: [PATCH v2 1/6] drm/i915: Lock out execlist tasklet while peeking inside for busy-stats Date: Wed, 17 Jan 2018 15:22:09 +0200 Message-ID: <87k1wgipry.fsf@gaia.fi.intel.com> References: <20180115102805.22471-1-chris@chris-wilson.co.uk> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" 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 8EA4C6E430 for ; Wed, 17 Jan 2018 13:22:19 +0000 (UTC) In-Reply-To: <20180115102805.22471-1-chris@chris-wilson.co.uk> 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 Q2hyaXMgV2lsc29uIDxjaHJpc0BjaHJpcy13aWxzb24uY28udWs+IHdyaXRlczoKCj4gSW4gb3Jk ZXIgdG8gcHJldmVudCBhIHJhY2UgY29uZGl0aW9uIHdoZXJlIHdlIG1heSBlbmQgdXAgb3ZlcmFj Y291bnRpbmcKPiB0aGUgYWN0aXZlIHN0YXRlIGFuZCBsZWF2aW5nIHRoZSBidXN5LXN0YXRzIGJl bGlldmluZyB0aGUgR1BVIGlzIDEwMCUKPiBidXN5LCBsb2NrIG91dCB0aGUgdGFza2xldCB3aGls ZSB3ZSByZWNvbnN0cnVjdCB0aGUgYnVzeSBzdGF0ZS4gVGhlcmUgaXMKPiBubyBkaXJlY3Qgc3Bp bmxvY2sgZ3VhcmQgZm9yIHRoZSBleGVjbGlzdHMtPnBvcnRbXSwgc28gd2UgbmVlZCB0bwo+IHV0 aWxpc2UgdGFza2xldF9kaXNhYmxlKCkgYXMgYSBzeW5jaHJvbm91cyBiYXJyaWVyIHRvIHByZXZl bnQgdGhlIG9ubHkKPiB3cml0ZXIgdG8gZXhlY2xpc3RzLT5wb3J0W10gZnJvbSBydW5uaW5nIGF0 IHRoZSBzYW1lIHRpbWUgYXMgdGhlIGVuYWJsZS4KPgo+IEZpeGVzOiA0OTAwNzI3ZDM1YmIgKCJk cm0vaTkxNS9wbXU6IFJlY29uc3RydWN0IGFjdGl2ZSBzdGF0ZSBvbiBzdGFydGluZyBidXN5LXN0 YXRzIikKPiBTaWduZWQtb2ZmLWJ5OiBDaHJpcyBXaWxzb24gPGNocmlzQGNocmlzLXdpbHNvbi5j by51az4KPiBDYzogVHZydGtvIFVyc3VsaW4gPHR2cnRrby51cnN1bGluQGludGVsLmNvbT4KClRo aXMgc2VyaWVzIGFwcGxpZWQgb24gZHJtLXRpcCB3aXRoIGoxOTAwLiBVcHRpbWUgMmggMzVtaW4g dW50aWwgc3lzdGVtCmhhbmcuIExvYWQgd2FzIGdseGdlYXJzICsgdmlkZW8uCgotTWlrYQoKPiAt LS0KPiAgZHJpdmVycy9ncHUvZHJtL2k5MTUvaW50ZWxfZW5naW5lX2NzLmMgfCAyMCArKysrKysr KysrKystLS0tLS0tLQo+ICAxIGZpbGUgY2hhbmdlZCwgMTIgaW5zZXJ0aW9ucygrKSwgOCBkZWxl dGlvbnMoLSkKPgo+IGRpZmYgLS1naXQgYS9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pbnRlbF9lbmdp bmVfY3MuYyBiL2RyaXZlcnMvZ3B1L2RybS9pOTE1L2ludGVsX2VuZ2luZV9jcy5jCj4gaW5kZXgg ZDc5MGJkYzIyN2ZmLi5iMjIxNjEwZjIzNjUgMTAwNjQ0Cj4gLS0tIGEvZHJpdmVycy9ncHUvZHJt L2k5MTUvaW50ZWxfZW5naW5lX2NzLmMKPiArKysgYi9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pbnRl bF9lbmdpbmVfY3MuYwo+IEBAIC0xOTQzLDE2ICsxOTQzLDIyIEBAIGludGVsX2VuZ2luZV9sb29r dXBfdXNlcihzdHJ1Y3QgZHJtX2k5MTVfcHJpdmF0ZSAqaTkxNSwgdTggY2xhc3MsIHU4IGluc3Rh bmNlKQo+ICAgKi8KPiAgaW50IGludGVsX2VuYWJsZV9lbmdpbmVfc3RhdHMoc3RydWN0IGludGVs X2VuZ2luZV9jcyAqZW5naW5lKQo+ICB7Cj4gKwlzdHJ1Y3QgaW50ZWxfZW5naW5lX2V4ZWNsaXN0 cyAqZXhlY2xpc3RzID0gJmVuZ2luZS0+ZXhlY2xpc3RzOwo+ICAJdW5zaWduZWQgbG9uZyBmbGFn czsKPiArCWludCBlcnIgPSAwOwo+ICAKPiAgCWlmICghaW50ZWxfZW5naW5lX3N1cHBvcnRzX3N0 YXRzKGVuZ2luZSkpCj4gIAkJcmV0dXJuIC1FTk9ERVY7Cj4gIAo+ICsJdGFza2xldF9kaXNhYmxl KCZleGVjbGlzdHMtPnRhc2tsZXQpOwo+ICAJc3Bpbl9sb2NrX2lycXNhdmUoJmVuZ2luZS0+c3Rh dHMubG9jaywgZmxhZ3MpOwo+IC0JaWYgKGVuZ2luZS0+c3RhdHMuZW5hYmxlZCA9PSB+MCkKPiAt CQlnb3RvIGJ1c3k7Cj4gKwo+ICsJaWYgKHVubGlrZWx5KGVuZ2luZS0+c3RhdHMuZW5hYmxlZCA9 PSB+MCkpIHsKPiArCQllcnIgPSAtRUJVU1k7Cj4gKwkJZ290byB1bmxvY2s7Cj4gKwl9Cj4gKwo+ ICAJaWYgKGVuZ2luZS0+c3RhdHMuZW5hYmxlZCsrID09IDApIHsKPiAtCQlzdHJ1Y3QgaW50ZWxf ZW5naW5lX2V4ZWNsaXN0cyAqZXhlY2xpc3RzID0gJmVuZ2luZS0+ZXhlY2xpc3RzOwo+ICAJCWNv bnN0IHN0cnVjdCBleGVjbGlzdF9wb3J0ICpwb3J0ID0gZXhlY2xpc3RzLT5wb3J0Owo+ICAJCXVu c2lnbmVkIGludCBudW1fcG9ydHMgPSBleGVjbGlzdHNfbnVtX3BvcnRzKGV4ZWNsaXN0cyk7Cj4g IAo+IEBAIC0xOTY3LDE0ICsxOTczLDEyIEBAIGludCBpbnRlbF9lbmFibGVfZW5naW5lX3N0YXRz KHN0cnVjdCBpbnRlbF9lbmdpbmVfY3MgKmVuZ2luZSkKPiAgCQlpZiAoZW5naW5lLT5zdGF0cy5h Y3RpdmUpCj4gIAkJCWVuZ2luZS0+c3RhdHMuc3RhcnQgPSBlbmdpbmUtPnN0YXRzLmVuYWJsZWRf YXQ7Cj4gIAl9Cj4gLQlzcGluX3VubG9ja19pcnFyZXN0b3JlKCZlbmdpbmUtPnN0YXRzLmxvY2ss IGZsYWdzKTsKPiAgCj4gLQlyZXR1cm4gMDsKPiAtCj4gLWJ1c3k6Cj4gK3VubG9jazoKPiAgCXNw aW5fdW5sb2NrX2lycXJlc3RvcmUoJmVuZ2luZS0+c3RhdHMubG9jaywgZmxhZ3MpOwo+ICsJdGFz a2xldF9lbmFibGUoJmV4ZWNsaXN0cy0+dGFza2xldCk7Cj4gIAo+IC0JcmV0dXJuIC1FQlVTWTsK PiArCXJldHVybiBlcnI7Cj4gIH0KPiAgCj4gIHN0YXRpYyBrdGltZV90IF9faW50ZWxfZW5naW5l X2dldF9idXN5X3RpbWUoc3RydWN0IGludGVsX2VuZ2luZV9jcyAqZW5naW5lKQo+IC0tIAo+IDIu MTUuMQo+Cj4gX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18K PiBJbnRlbC1nZnggbWFpbGluZyBsaXN0Cj4gSW50ZWwtZ2Z4QGxpc3RzLmZyZWVkZXNrdG9wLm9y Zwo+IGh0dHBzOi8vbGlzdHMuZnJlZWRlc2t0b3Aub3JnL21haWxtYW4vbGlzdGluZm8vaW50ZWwt Z2Z4Cl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCkludGVs LWdmeCBtYWlsaW5nIGxpc3QKSW50ZWwtZ2Z4QGxpc3RzLmZyZWVkZXNrdG9wLm9yZwpodHRwczov L2xpc3RzLmZyZWVkZXNrdG9wLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2ludGVsLWdmeAo=