From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrea Arcangeli Subject: Re: [PATCH 1/2] drm/i915: Don't call synchronize_rcu_expedited under struct_mutex Date: Fri, 7 Apr 2017 15:32:30 +0200 Message-ID: <20170407133230.GC5035@redhat.com> References: <1491562175-27680-1-git-send-email-joonas.lahtinen@linux.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from mx1.redhat.com (mx1.redhat.com [209.132.183.28]) by gabe.freedesktop.org (Postfix) with ESMTPS id 1658C6EB09 for ; Fri, 7 Apr 2017 13:32:33 +0000 (UTC) Content-Disposition: inline In-Reply-To: <1491562175-27680-1-git-send-email-joonas.lahtinen@linux.intel.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: Joonas Lahtinen Cc: Jani Nikula , Daniel Vetter , Intel graphics driver community testing & development List-Id: intel-gfx@lists.freedesktop.org SGVsbG8gSm9vbmFzLAoKT24gRnJpLCBBcHIgMDcsIDIwMTcgYXQgMDE6NDk6MzRQTSArMDMwMCwg Sm9vbmFzIExhaHRpbmVuIHdyb3RlOgo+IGRpZmYgLS1naXQgYS9kcml2ZXJzL2dwdS9kcm0vaTkx NS9pOTE1X2dlbV9zaHJpbmtlci5jIGIvZHJpdmVycy9ncHUvZHJtL2k5MTUvaTkxNV9nZW1fc2hy aW5rZXIuYwo+IGluZGV4IDI5NzhhY2QuLjEyOWVkMzAgMTAwNjQ0Cj4gLS0tIGEvZHJpdmVycy9n cHUvZHJtL2k5MTUvaTkxNV9nZW1fc2hyaW5rZXIuYwo+ICsrKyBiL2RyaXZlcnMvZ3B1L2RybS9p OTE1L2k5MTVfZ2VtX3Nocmlua2VyLmMKPiBAQCAtNTMsNiArNTMsMTcgQEAgc3RhdGljIGJvb2wg aTkxNV9nZW1fc2hyaW5rZXJfbG9jayhzdHJ1Y3QgZHJtX2RldmljZSAqZGV2LCBib29sICp1bmxv Y2spCj4gIAlCVUcoKTsKPiAgfQo+ICAKPiArc3RhdGljIHZvaWQgaTkxNV9nZW1fc2hyaW5rZXJf dW5sb2NrKHN0cnVjdCBkcm1fZGV2aWNlICpkZXYsIGJvb2wgdW5sb2NrKQo+ICt7Cj4gKwlpZiAo IXVubG9jaykKPiArCQlyZXR1cm47Cj4gKwo+ICsJbXV0ZXhfdW5sb2NrKCZkZXYtPnN0cnVjdF9t dXRleCk7Cj4gKwo+ICsJLyogZXhwZWRpdGUgdGhlIFJDVSBncmFjZSBwZXJpb2QgdG8gZnJlZSBz b21lIHJlcXVlc3Qgc2xhYnMgKi8KPiArCXN5bmNocm9uaXplX3JjdV9leHBlZGl0ZWQoKTsKPiAr fQo+ICsKPiAgc3RhdGljIGJvb2wgYW55X3ZtYV9waW5uZWQoc3RydWN0IGRybV9pOTE1X2dlbV9v YmplY3QgKm9iaikKPiAgewo+ICAJc3RydWN0IGk5MTVfdm1hICp2bWE7Cj4gQEAgLTIzMiwxMSAr MjQzLDggQEAgaTkxNV9nZW1fc2hyaW5rKHN0cnVjdCBkcm1faTkxNV9wcml2YXRlICpkZXZfcHJp diwKPiAgCQlpbnRlbF9ydW50aW1lX3BtX3B1dChkZXZfcHJpdik7Cj4gIAo+ICAJaTkxNV9nZW1f cmV0aXJlX3JlcXVlc3RzKGRldl9wcml2KTsKPiAtCWlmICh1bmxvY2spCj4gLQkJbXV0ZXhfdW5s b2NrKCZkZXZfcHJpdi0+ZHJtLnN0cnVjdF9tdXRleCk7Cj4gIAo+IC0JLyogZXhwZWRpdGUgdGhl IFJDVSBncmFjZSBwZXJpb2QgdG8gZnJlZSBzb21lIHJlcXVlc3Qgc2xhYnMgKi8KPiAtCXN5bmNo cm9uaXplX3JjdV9leHBlZGl0ZWQoKTsKPiArCWk5MTVfZ2VtX3Nocmlua2VyX3VubG9jaygmZGV2 X3ByaXYtPmRybSwgdW5sb2NrKTsKPiAgfQo+IEBAIC0yOTYsOCArMzA0LDcgQEAgaTkxNV9nZW1f c2hyaW5rZXJfY291bnQoc3RydWN0IHNocmlua2VyICpzaHJpbmtlciwgc3RydWN0IHNocmlua19j b250cm9sICpzYykKPiAgCQkJY291bnQgKz0gb2JqLT5iYXNlLnNpemUgPj4gUEFHRV9TSElGVDsK PiAgCX0KPiAgCj4gLQlpZiAodW5sb2NrKQo+IC0JCW11dGV4X3VubG9jaygmZGV2LT5zdHJ1Y3Rf bXV0ZXgpOwo+ICsJaTkxNV9nZW1fc2hyaW5rZXJfdW5sb2NrKGRldiwgdW5sb2NrKTsKCldoeSBo ZXJlPyBUaGlzIGRvZXNuJ3QgbWFrZSBzZW5zZSwgYWxsIGl0IG1hdHRlcnMgaXMgdGhlIHRocm90 dGxpbmcgdG8KaGFwcGVuIHdoZW4gc2Nhbl9vYmplY3RzIGlzIHJ1biwgaWYgY291bnRfb2JqZWN0 cyBpcyBydW4gaXQncyBub3QKd29ydGggaXQgdG8gd2FpdCBhIHF1aWVzY2VudCBwb2ludCBhbmQg dG8gY2FsbApzeW5jaHJvbml6ZV9yY3VfZXhwZWRpdGVkKCksIGl0IGlzICp2ZXJ5KiBleHBlbnNp dmUuIEkgcmVjb21tZW5kIHRvCnJldmVyc2UgdGhpcyBodW5rLCBJIHRoaW5rIGl0J3Mgd29yc2Vu aW5nIHRoZSBydW50aW1lIHdpdGggemVybwpiZW5lZml0cyB0byBpbmNyZWFzZSB0aGUgcmVsaWFi aWxpdHkgb2YgcmVjbGFpbS4KCj4gIAlyZXR1cm4gY291bnQ7Cj4gIH0KPiBAQCAtMzI0LDggKzMz MSw4IEBAIGk5MTVfZ2VtX3Nocmlua2VyX3NjYW4oc3RydWN0IHNocmlua2VyICpzaHJpbmtlciwg c3RydWN0IHNocmlua19jb250cm9sICpzYykKPiAgCQkJCQkgc2MtPm5yX3RvX3NjYW4gLSBmcmVl ZCwKPiAgCQkJCQkgSTkxNV9TSFJJTktfQk9VTkQgfAo+ICAJCQkJCSBJOTE1X1NIUklOS19VTkJP VU5EKTsKPiAtCWlmICh1bmxvY2spCj4gLQkJbXV0ZXhfdW5sb2NrKCZkZXYtPnN0cnVjdF9tdXRl eCk7Cj4gKwo+ICsJaTkxNV9nZW1fc2hyaW5rZXJfdW5sb2NrKGRldiwgdW5sb2NrKTsKPiAgCj4g IAlyZXR1cm4gZnJlZWQ7Cj4gIH0KClBlcmZlY3QgaGVyZSwgZmFzdGVyIHRoYW4gcmUtcmVhZGlu ZyB0aGUgbXV0ZXggdG9vLCBhbHJlYWR5IHRob3VnaHQgb2YKY2hlY2tpbmcgdW5sb2NrIGluc3Rl YWQuIEFsdGhvdWdoIGlmIHRoYXQncyB0aGUgb25seSBwbGFjZSBpdCBjYW4gYXMKd2VsbCBiZSBl eHBsaWNpdC4KCj4gQEAgLTM2Nyw4ICszNzQsNyBAQCBpOTE1X2dlbV9zaHJpbmtlcl91bmxvY2tf dW5pbnRlcnJ1cHRpYmxlKHN0cnVjdCBkcm1faTkxNV9wcml2YXRlICpkZXZfcHJpdiwKPiAgCQkJ CQkgc3RydWN0IHNocmlua2VyX2xvY2tfdW5pbnRlcnJ1cHRpYmxlICpzbHUpCj4gIHsKPiAgCWRl dl9wcml2LT5tbS5pbnRlcnJ1cHRpYmxlID0gc2x1LT53YXNfaW50ZXJydXB0aWJsZTsKPiAtCWlm IChzbHUtPnVubG9jaykKPiAtCQltdXRleF91bmxvY2soJmRldl9wcml2LT5kcm0uc3RydWN0X211 dGV4KTsKPiArCWk5MTVfZ2VtX3Nocmlua2VyX3VubG9jaygmZGV2X3ByaXYtPmRybSwgc2x1LT51 bmxvY2spOwo+ICB9CgppOTE1X2dlbV9zaHJpbmtlcl91bmxvY2tfdW5pbnRlcnJ1cHRpYmxlIGlz IG1vcmUgb2YgYSBoZWxwZXIgZnVuY3Rpb24KYnV0IGl0IGRvZXNuJ3QgYWx3YXlzIG1ha2Ugc2Vu c2UgdG8gd2FpdCBhIHJjdSBncmFjZSBwZXJpb2QuIEkgdGhpbmsKaXQnZCBiZSBiZXR0ZXIgdG8g YmUgc2VsZWN0aXZlIGluIHdoZW4gdG8gZXhwbGljaXRseSBydW4Kc3luY2hyb25pemVfcmN1X2V4 cGVkaXRlZCgpOyBpbiBmYWN0IGluIHNvbWUgY2FzZSBzeW5jaHJvbml6ZV9zY2hlZCgpCm1heSBi ZSBwcmVmZXJlYWJsZSBhbmQgaXQgd2lsbCBjYXVzZSBsZXNzIHdhc3RlZCBDUFUgY3ljbGVzIGF0 IHRoZQpvbmx5IGRvd25zaWRlIG9mIGhpZ2hlciBsYXRlbmN5LCBpdCdzIGFsbCBhYm91dCB0cmFk ZW9mZnMgd2hpY2ggb25lCnNob3VsZCBiZSBjYWxsZWQgYXMgdGhleSdyZSBlcXVpdmFsZW50IGFz IGZhciBhcyBpOTE1IGlzIGNvbmNlcm5lZC4gSQpkb24ndCB0aGluayBjYWxsaW5nIHN5bmNocm9u aXplX3JjdV9leHBlZGl0ZWQoKTsgdW5jb25kaXRpb25hbGx5IGluIGEKdW5sb2NrIGhlbHBlciBp cyBvayBhbmQgaXQnZCBiZSBiZXR0ZXIgdG8gZGVjaWRlZCBpZiB0byBjYWxsIChhbmQKd2hpY2gg b25lKSBvbiBhIGNhc2UgYnkgY2FzZSBiYXNpcy4KCkkga2luZCBJIHByZWZlciBteSBwYXRjaCwg anVzdCBjbGVhbmVkIHVwIHdpdGggdGhlCnN5bmNocm9uaXplX3JjdV9leHBlZGl0ZWQgdW5kZXIg aWYgKHVubG9jaykgeyBtdXRleF91bmxvY2s7CnN5bmNocm9uaXplX3JjdS4uLiB9LgoKSSdkIGFs c28gbGlrZSB0byBzZWUgYWxsIHRob3NlIG11dGV4X3RyeWxvY2tfcmVjdXJzaXZlIGRyb3BwZWQs IHRoZQpvbmx5IHBsYWNlIHdoZXJlIGl0IG1ha2VzIHNlbnNlIHRvIHVzZSBpdCByZWFsbHkgaXMK aTkxNV9nZW1fc2hyaW5rZXJfc2NhbiBhbmQgaTkxNV9nZW1fc2hyaW5rZXJfY291bnQsIHVubGVz cyBpbiBmYWN0IHdlCndhbnQgdG8gcmVwbGFjZSBpdCB0aGVyZSB0b28gd2l0aCBhIG11dGV4X3Ry eWxvY2sgYW5kIHN0b3AgdGhlCnJlY3Vyc2l2ZSBiZWhhdmlvciBvZiByZWNsYWltIGludG8gRFJN IGNvZGUuIFRoZSBvdGhlciBjYXNlcyB3aGVyZSB0aGUKY29kZSB1c2VzIGxvY2sgcmVjdXJzaW9u IGRvbid0IG1ha2UgbXVjaCBzZW5zZSB0byBtZSwgSSB0aGluayB0aGUgY29kZQp3b3VsZCBiZSBz aW1wbGVyIGlmIHRoZSBpbmZvcm1hdGlvbiBvbiB0aGUgc3RydWN0X211dGV4IGJlaW5nIGhvbGQK d291bGQgYmUgcGFzc2VkIGFzIHBhcmFtZXRlciBpbiBhbGwgb3RoZXIgY2FzZXMuIEl0J2QgYmUg bGlrZWx5IGZhc3RlcgphcyB3ZWxsIGZvciB0aGUgc2FtZSByZWFzb24gd2h5IGNoZWNraW5nICJ1 bmxvY2siIGlzIGJldHRlciBhYm92ZSB0aGFuCmNoZWNraW5nIHRoZSBtdXRleC4KX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KSW50ZWwtZ2Z4IG1haWxpbmcg bGlzdApJbnRlbC1nZnhAbGlzdHMuZnJlZWRlc2t0b3Aub3JnCmh0dHBzOi8vbGlzdHMuZnJlZWRl c2t0b3Aub3JnL21haWxtYW4vbGlzdGluZm8vaW50ZWwtZ2Z4Cg==