From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jani Nikula Subject: Re: [PATCH] drm/i915: use udelay for very short delays Date: Thu, 15 Dec 2016 11:08:49 +0200 Message-ID: <87wpf1pnj2.fsf@intel.com> References: <1481776147-23041-1-git-send-email-hofrat@osadl.org> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <1481776147-23041-1-git-send-email-hofrat@osadl.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: Daniel Vetter Cc: David Airlie , intel-gfx@lists.freedesktop.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, Nicholas Mc Guire List-Id: intel-gfx@lists.freedesktop.org T24gVGh1LCAxNSBEZWMgMjAxNiwgTmljaG9sYXMgTWMgR3VpcmUgPGhvZnJhdEBvc2FkbC5vcmc+ IHdyb3RlOgo+IEV2ZW4gb24gZmFzdCBzeXN0ZW1zIGEgMiBtaWNyb3NlY29uZCBkZWxheSBpcyBt b3N0IGxpa2VseSBtb3JlIGVmZmljaWVudAo+IGFzIGEgYnVzeS13YWl0IGxvb3AuIFRoZSBvdmVy aGVhZCBvZiBhIGhydGltZXIgZG9lcyBub3Qgc2VlbSB3YXJyYW50ZWQgLQo+IGNoYW5nZSB0aGlz IHRvIGEgdWRlbGF5KDIpLgoKU2ltaWxhciBjb25jZXJucyBhcyBpbiBbMV0uIFdlIGRvbid0IG5l ZWQgdGhlIGFjY3VyYWN5IG9mIHVkZWxheSgpIGhlcmUsCnNvIHRoaXMgYm9pbHMgZG93biB0byB3 aGljaCBpcyB0aGUgYmV0dGVyIHVzZSBvZiBDUFUuIFdlIGNvdWxkIHByb2JhYmx5CnJlbGF4IHRo ZSBtYXggZGVsYXkgbW9yZSBpZiB0aGF0IHdhcyBoZWxwZnVsLiBCdXQgSSdtIG5vdCBpbW1lZGlh dGVseQpzb2xkIG9uICJpcyBtb3N0IGxpa2VseSBtb3JlIGVmZmljaWVudCIgd2hpY2ggc291bmRz IGxpa2UgYSBndXQgZmVlbGluZy4KCkknbSBzb3JyeSBpdCdzIG5vdCBjbGVhciBpbiBteSBvdGhl ciByZXBseSB0aGF0IEkgZG8gYXBwcmVjaWF0ZQphZGRyZXNzaW5nIGluY29ycmVjdC9zaWxseSB1 c2Ugb2YgdXNsZWVwX3JhbmdlKCk7IEknbSBqdXN0IG5vdCAoeWV0KQpjb252aW5jZWQgdWRlbGF5 KCkgaXMgdGhlIGFuc3dlci4KCkJSLApKYW5pLgoKClsxXSBodHRwOi8vbGttbC5rZXJuZWwub3Jn L3IvODczN2hwcjMyYS5mc2ZAaW50ZWwuY29tCgoKPgo+IFNpZ25lZC1vZmYtYnk6IE5pY2hvbGFz IE1jIEd1aXJlIDxob2ZyYXRAb3NhZGwub3JnPgo+IC0tLQo+Cj4gUHJvYmxlbSBmb3VuZCBieSBj b2NjaW5lbGxlOgo+Cj4gUGF0Y2ggd2FzIGNvbXBpbGUgdGVzdGVkIHdpdGg6IHg4Nl82NF9kZWZj b25maWcgKGltcGxpZXMgQ09ORklHX0RSTV9JOTE1KQo+Cj4gUGF0Y2ggaXMgYWdhaW5zdCA0Ljku MCAobG9jYWx2ZXJzaW9uLW5leHQgaXMgbmV4dC0yMDE2MTIxNCkKPgo+ICBkcml2ZXJzL2dwdS9k cm0vaTkxNS9pbnRlbF9kc2kuYyB8IDIgKy0KPiAgMSBmaWxlIGNoYW5nZWQsIDEgaW5zZXJ0aW9u KCspLCAxIGRlbGV0aW9uKC0pCj4KPiBkaWZmIC0tZ2l0IGEvZHJpdmVycy9ncHUvZHJtL2k5MTUv aW50ZWxfZHNpLmMgYi9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pbnRlbF9kc2kuYwo+IGluZGV4IDVi NzJjNTAuLjE5ZmU4NmIgMTAwNjQ0Cj4gLS0tIGEvZHJpdmVycy9ncHUvZHJtL2k5MTUvaW50ZWxf ZHNpLmMKPiArKysgYi9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pbnRlbF9kc2kuYwo+IEBAIC0zNzks NyArMzc5LDcgQEAgc3RhdGljIHZvaWQgYnh0X2RzaV9kZXZpY2VfcmVhZHkoc3RydWN0IGludGVs X2VuY29kZXIgKmVuY29kZXIpCj4gIAkJdmFsICY9IH5VTFBTX1NUQVRFX01BU0s7Cj4gIAkJdmFs IHw9IChVTFBTX1NUQVRFX0VOVEVSIHwgREVWSUNFX1JFQURZKTsKPiAgCQlJOTE1X1dSSVRFKE1J UElfREVWSUNFX1JFQURZKHBvcnQpLCB2YWwpOwo+IC0JCXVzbGVlcF9yYW5nZSgyLCAzKTsKPiAr CQl1ZGVsYXkoMik7Cj4gIAo+ICAJCS8qIDMuIEV4aXQgVUxQUyAqLwo+ICAJCXZhbCA9IEk5MTVf UkVBRChNSVBJX0RFVklDRV9SRUFEWShwb3J0KSk7CgotLSAKSmFuaSBOaWt1bGEsIEludGVsIE9w ZW4gU291cmNlIFRlY2hub2xvZ3kgQ2VudGVyCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fCkludGVsLWdmeCBtYWlsaW5nIGxpc3QKSW50ZWwtZ2Z4QGxpc3Rz LmZyZWVkZXNrdG9wLm9yZwpodHRwczovL2xpc3RzLmZyZWVkZXNrdG9wLm9yZy9tYWlsbWFuL2xp c3RpbmZvL2ludGVsLWdmeAo=