From mboxrd@z Thu Jan 1 00:00:00 1970 From: Chris Wilson Subject: [PATCH v3] drm/i915: Skip object locking around a no-op set-domain ioctl Date: Thu, 21 Mar 2019 09:35:36 +0000 Message-ID: <20190321093536.24488-1-chris@chris-wilson.co.uk> References: <20190321080532.18381-1-chris@chris-wilson.co.uk> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from fireflyinternet.com (mail.fireflyinternet.com [109.228.58.192]) by gabe.freedesktop.org (Postfix) with ESMTPS id 64BCE6E034 for ; Thu, 21 Mar 2019 09:36:29 +0000 (UTC) In-Reply-To: <20190321080532.18381-1-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: intel-gfx@lists.freedesktop.org List-Id: intel-gfx@lists.freedesktop.org SWYgd2UgYXJlIGFscmVhZHkgaW4gdGhlIGRlc2lyZWQgd3JpdGUgZG9tYWluIG9mIGEgc2V0LWRv bWFpbiBpb2N0bCwKdGhlbiB0aGVyZSBpcyBub3RoaW5nIGZvciB1cyB0byBkbyBhbmQgd2UgY2Fu IHF1aWNrbHkgcmV0dXJuIGJhY2sgdG8KdXNlcnNwYWNlLCBhdm9pZGluZyBhbnkgbG9jayBjb250 ZW50aW9uLiBCeSByZWNvZ25pc2luZyB0aGF0IHRoZQp3cml0ZV9kb21haW4gaXMgYWx3YXlzIGEg c3Vic2V0IG9mIHRoZSByZWFkX2RvbWFpbnMsIGFuZCBleGNsdWRpbmcgdGhlCm5vLW9wIGNhc2Ug b2YgcmVxdWlyaW5nIDAgcmVhZF9kb21haW5zIGluIHRoZSBpb2N0bCwgd2UgY2FuIGluZmVyIGlm IHRoZQpjdXJyZW50IHdyaXRlX2RvbWFpbiBtYXRjaGVzIHRoZSB0YXJnZXQgcmVhZF9kb21haW5z LCB0aGVyZSBpcyBub3RoaW5nCmZvciB1cyB0byBkby4KClNlY29uZGFyeSBhc3BlY3Qgb2YgdGhp cyBpcyB0aGF0IHdlIHVuZG8gdGhlIGFyYml0cmFyeSBmZXRjaGluZyBhbmQKcG90ZW50aWFsIGZs dXNoaW5nIG9mIGFsbCBwYWdlcyBmb3IgYSBzZXQtZG9tYWluKC53cml0ZT1DUFUpIGNhbGwgb24g YQpmcmVzaCBvYmplY3QgLS0gd2hpY2ggd2FzIGludHJvZHVjZWQgc2ltcGx5IGJlY2F1c2Ugd2Ug ZG8gdGhlIGdldC1wYWdlcwpiZWZvcmUgdGFraW5nIHRoZSBzdHJ1Y3RfbXV0ZXguCgpSZWZlcmVu Y2VzOiA0MGU2MmQ1ZDZiZTggKCJkcm0vaTkxNTogQWNxdWlyZSB0aGUgYmFja2luZyBzdG9yYWdl IG91dHNpZGUgb2Ygc3RydWN0X211dGV4IGluIHNldC1kb21haW4iKQpTaWduZWQtb2ZmLWJ5OiBD aHJpcyBXaWxzb24gPGNocmlzQGNocmlzLXdpbHNvbi5jby51az4KQ2M6IEpvb25hcyBMYWh0aW5l biA8am9vbmFzLmxhaHRpbmVuQGxpbnV4LmludGVsLmNvbT4KQ2M6IE1hdHRoZXcgQXVsZCA8bWF0 dGhldy53aWxsaWFtLmF1bGRAZ21haWwuY29tPgotLS0KIGRyaXZlcnMvZ3B1L2RybS9pOTE1L2k5 MTVfZ2VtLmMgfCAxNyArKysrKysrKysrKysrKy0tLQogMSBmaWxlIGNoYW5nZWQsIDE0IGluc2Vy dGlvbnMoKyksIDMgZGVsZXRpb25zKC0pCgpkaWZmIC0tZ2l0IGEvZHJpdmVycy9ncHUvZHJtL2k5 MTUvaTkxNV9nZW0uYyBiL2RyaXZlcnMvZ3B1L2RybS9pOTE1L2k5MTVfZ2VtLmMKaW5kZXggMWE2 ODRiN2U4YzA5Li44MmYwYmQzMTY1NjQgMTAwNjQ0Ci0tLSBhL2RyaXZlcnMvZ3B1L2RybS9pOTE1 L2k5MTVfZ2VtLmMKKysrIGIvZHJpdmVycy9ncHUvZHJtL2k5MTUvaTkxNV9nZW0uYwpAQCAtMTQ4 NCwxNyArMTQ4NCwyOCBAQCBpOTE1X2dlbV9zZXRfZG9tYWluX2lvY3RsKHN0cnVjdCBkcm1fZGV2 aWNlICpkZXYsIHZvaWQgKmRhdGEsCiAJaWYgKCh3cml0ZV9kb21haW4gfCByZWFkX2RvbWFpbnMp ICYgSTkxNV9HRU1fR1BVX0RPTUFJTlMpCiAJCXJldHVybiAtRUlOVkFMOwogCi0JLyogSGF2aW5n IHNvbWV0aGluZyBpbiB0aGUgd3JpdGUgZG9tYWluIGltcGxpZXMgaXQncyBpbiB0aGUgcmVhZAor CS8qCisJICogSGF2aW5nIHNvbWV0aGluZyBpbiB0aGUgd3JpdGUgZG9tYWluIGltcGxpZXMgaXQn cyBpbiB0aGUgcmVhZAogCSAqIGRvbWFpbiwgYW5kIG9ubHkgdGhhdCByZWFkIGRvbWFpbi4gIEVu Zm9yY2UgdGhhdCBpbiB0aGUgcmVxdWVzdC4KIAkgKi8KLQlpZiAod3JpdGVfZG9tYWluICE9IDAg JiYgcmVhZF9kb21haW5zICE9IHdyaXRlX2RvbWFpbikKKwlpZiAod3JpdGVfZG9tYWluICYmIHJl YWRfZG9tYWlucyAhPSB3cml0ZV9kb21haW4pCiAJCXJldHVybiAtRUlOVkFMOwogCisJaWYgKCFy ZWFkX2RvbWFpbnMpCisJCXJldHVybiAwOworCiAJb2JqID0gaTkxNV9nZW1fb2JqZWN0X2xvb2t1 cChmaWxlLCBhcmdzLT5oYW5kbGUpOwogCWlmICghb2JqKQogCQlyZXR1cm4gLUVOT0VOVDsKIAot CS8qIFRyeSB0byBmbHVzaCB0aGUgb2JqZWN0IG9mZiB0aGUgR1BVIHdpdGhvdXQgaG9sZGluZyB0 aGUgbG9jay4KKwkvKiBBbHJlYWR5IGluIHRoZSBkZXNpcmVkIHRhcmdldCB3cml0ZSBkb21haW4/ IE5vdGhpbmcgZm9yIHVzIHRvISAqLworCWlmIChSRUFEX09OQ0Uob2JqLT53cml0ZV9kb21haW4p ID09IHJlYWRfZG9tYWlucykgeworCQllcnIgPSAwOworCQlnb3RvIG91dDsKKwl9CisKKwkvKgor CSAqIFRyeSB0byBmbHVzaCB0aGUgb2JqZWN0IG9mZiB0aGUgR1BVIHdpdGhvdXQgaG9sZGluZyB0 aGUgbG9jay4KIAkgKiBXZSB3aWxsIHJlcGVhdCB0aGUgZmx1c2ggaG9sZGluZyB0aGUgbG9jayBp biB0aGUgbm9ybWFsIG1hbm5lcgogCSAqIHRvIGNhdGNoIGNhc2VzIHdoZXJlIHdlIGFyZSBnYXp1 bXBlZC4KIAkgKi8KLS0gCjIuMjAuMQoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX18KSW50ZWwtZ2Z4IG1haWxpbmcgbGlzdApJbnRlbC1nZnhAbGlzdHMuZnJl ZWRlc2t0b3Aub3JnCmh0dHBzOi8vbGlzdHMuZnJlZWRlc2t0b3Aub3JnL21haWxtYW4vbGlzdGlu Zm8vaW50ZWwtZ2Z4