From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.0 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8F454C433E8 for ; Tue, 14 Jul 2020 20:07:08 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 701FC20720 for ; Tue, 14 Jul 2020 20:07:08 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 701FC20720 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=chris-wilson.co.uk Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 9421F6E886; Tue, 14 Jul 2020 20:07:04 +0000 (UTC) Received: from fireflyinternet.com (unknown [77.68.26.236]) by gabe.freedesktop.org (Postfix) with ESMTPS id A58AB6E885; Tue, 14 Jul 2020 20:07:02 +0000 (UTC) X-Default-Received-SPF: pass (skip=forwardok (res=PASS)) x-ip-name=78.156.65.138; Received: from build.alporthouse.com (unverified [78.156.65.138]) by fireflyinternet.com (Firefly Internet (M1)) with ESMTP id 21820071-1500050 for multiple; Tue, 14 Jul 2020 21:06:47 +0100 From: Chris Wilson To: dri-devel@lists.freedesktop.org Subject: [PATCH 1/3] dma-buf/sw_sync: Avoid recursive lock during fence signal. Date: Tue, 14 Jul 2020 21:06:44 +0100 Message-Id: <20200714200646.14041-1-chris@chris-wilson.co.uk> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Gustavo Padovan , intel-gfx@lists.freedesktop.org, stable@vger.kernel.org, Chris Wilson , =?UTF-8?q?Christian=20K=C3=B6nig?= Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" RnJvbTogQmFzIE5pZXV3ZW5odWl6ZW4gPGJhc0BiYXNuaWV1d2VuaHVpemVuLm5sPgoKQ2FsbHRy ZWU6CiAgdGltZWxpbmVfZmVuY2VfcmVsZWFzZQogIGRybV9zY2hlZF9lbnRpdHlfd2FrZXVwCiAg ZG1hX2ZlbmNlX3NpZ25hbF9sb2NrZWQKICBzeW5jX3RpbWVsaW5lX3NpZ25hbAogIHN3X3N5bmNf aW9jdGwKClJlbGVhc2luZyB0aGUgcmVmZXJlbmNlIHRvIHRoZSBmZW5jZSBpbiB0aGUgZmVuY2Ug c2lnbmFsIGNhbGxiYWNrCnNlZW1zIHJlYXNvbmFibGUgdG8gbWUsIHNvIHRoaXMgcGF0Y2ggYXZv aWRzIHRoZSBsb2NraW5nIGlzc3VlIGluCnN3X3N5bmMuCgpkMzg2MmU0NGRhYTcgKCJkbWEtYnVm L3N3LXN5bmM6IEZpeCBsb2NraW5nIGFyb3VuZCBzeW5jX3RpbWVsaW5lIGxpc3RzIikKZml4ZWQg dGhlIHJlY3Vyc2l2ZSBsb2NraW5nIGlzc3VlIGJ1dCBjYXVzZWQgYW4gdXNlLWFmdGVyLWZyZWUu IExhdGVyCmQzYzZkZDFmYjMwZCAoImRtYS1idWYvc3dfc3luYzogU3luY2hyb25pemUgc2lnbmFs IHZzIHN5bmNwdCBmcmVlIikKZml4ZWQgdGhlIHVzZS1hZnRlci1mcmVlIGJ1dCByZWludHJvZHVj ZWQgdGhlIHJlY3Vyc2l2ZSBsb2NraW5nIGlzc3VlLgoKSW4gdGhpcyBhdHRlbXB0IHdlIGF2b2lk IHRoZSB1c2UtYWZ0ZXItZnJlZSBzdGlsbCBiZWNhdXNlIHRoZSByZWxlYXNlCmZ1bmN0aW9uIHN0 aWxsIGFsd2F5cyBsb2NrcywgYW5kIG91dHNpZGUgb2YgdGhlIGxvY2tpbmcgcmVnaW9uIGluIHRo ZQpzaWduYWwgZnVuY3Rpb24gd2UgaGF2ZSBwcm9wZXJseSByZWZjb3VudGVkIHJlZmVyZW5jZXMu CgpXZSBmdXJ0aGVybW9yZSBhbHNvIGF2b2lkIHRoZSByZWN1cml2ZSBsb2NrIGJ5IG1ha2luZyBz dXJlIHRoYXQgZWl0aGVyOgoKMSkgV2UgaGF2ZSBhIHByb3Blcmx5IHJlZmNvdW50ZWQgcmVmZXJl bmNlLCBwcmV2ZW50aW5nIHRoZSBzaWduYWwgZnJvbQogICB0cmlnZ2VyaW5nIHRoZSByZWxlYXNl IGZ1bmN0aW9uIGluc2lkZSB0aGUgbG9ja2VkIHJlZ2lvbi4KMikgVGhlIHJlZmNvdW50IHdhcyBh bHJlYWR5IHplcm8sIGFuZCBoZW5jZSBub2JvZHkgd2lsbCBiZSBhYmxlIHRvIHRyaWdnZXIKICAg dGhlIHJlbGVhc2UgZnVuY3Rpb24gZnJvbSB0aGUgc2lnbmFsIGZ1bmN0aW9uLgoKdjI6IE1vdmUg ZG1hX2ZlbmNlX3NpZ25hbCgpIGludG8gc2Vjb25kIGxvb3AgaW4gcHJlcGFyYXRpb24gdG8gbW92 aW5nCnRoZSBjYWxsYmFjayBvdXQgb2YgdGhlIHRpbWVsaW5lIG9iai0+bG9jay4KCkZpeGVzOiBk M2M2ZGQxZmIzMGQgKCJkbWEtYnVmL3N3X3N5bmM6IFN5bmNocm9uaXplIHNpZ25hbCB2cyBzeW5j cHQgZnJlZSIpCkNjOiBTdW1pdCBTZW13YWwgPHN1bWl0LnNlbXdhbEBsaW5hcm8ub3JnPgpDYzog Q2hyaXMgV2lsc29uIDxjaHJpc0BjaHJpcy13aWxzb24uY28udWs+CkNjOiBHdXN0YXZvIFBhZG92 YW4gPGd1c3Rhdm9AcGFkb3Zhbi5vcmc+CkNjOiBDaHJpc3RpYW4gS8O2bmlnIDxjaHJpc3RpYW4u a29lbmlnQGFtZC5jb20+CkNjOiA8c3RhYmxlQHZnZXIua2VybmVsLm9yZz4KU2lnbmVkLW9mZi1i eTogQmFzIE5pZXV3ZW5odWl6ZW4gPGJhc0BiYXNuaWV1d2VuaHVpemVuLm5sPgpTaWduZWQtb2Zm LWJ5OiBDaHJpcyBXaWxzb24gPGNocmlzQGNocmlzLXdpbHNvbi5jby51az4KLS0tCiBkcml2ZXJz L2RtYS1idWYvc3dfc3luYy5jIHwgMzIgKysrKysrKysrKysrKysrKysrKysrKy0tLS0tLS0tLS0K IDEgZmlsZSBjaGFuZ2VkLCAyMiBpbnNlcnRpb25zKCspLCAxMCBkZWxldGlvbnMoLSkKCmRpZmYg LS1naXQgYS9kcml2ZXJzL2RtYS1idWYvc3dfc3luYy5jIGIvZHJpdmVycy9kbWEtYnVmL3N3X3N5 bmMuYwppbmRleCAzNDhiM2E5MTcwZmEuLjgwN2M4MjE0ODA2MiAxMDA2NDQKLS0tIGEvZHJpdmVy cy9kbWEtYnVmL3N3X3N5bmMuYworKysgYi9kcml2ZXJzL2RtYS1idWYvc3dfc3luYy5jCkBAIC0x OTIsNiArMTkyLDcgQEAgc3RhdGljIGNvbnN0IHN0cnVjdCBkbWFfZmVuY2Vfb3BzIHRpbWVsaW5l X2ZlbmNlX29wcyA9IHsKIHN0YXRpYyB2b2lkIHN5bmNfdGltZWxpbmVfc2lnbmFsKHN0cnVjdCBz eW5jX3RpbWVsaW5lICpvYmosIHVuc2lnbmVkIGludCBpbmMpCiB7CiAJc3RydWN0IHN5bmNfcHQg KnB0LCAqbmV4dDsKKwlMSVNUX0hFQUQoc2lnbmFsKTsKIAogCXRyYWNlX3N5bmNfdGltZWxpbmUo b2JqKTsKIApAQCAtMjAzLDIxICsyMDQsMzIgQEAgc3RhdGljIHZvaWQgc3luY190aW1lbGluZV9z aWduYWwoc3RydWN0IHN5bmNfdGltZWxpbmUgKm9iaiwgdW5zaWduZWQgaW50IGluYykKIAkJaWYg KCF0aW1lbGluZV9mZW5jZV9zaWduYWxlZCgmcHQtPmJhc2UpKQogCQkJYnJlYWs7CiAKLQkJbGlz dF9kZWxfaW5pdCgmcHQtPmxpbmspOwotCQlyYl9lcmFzZSgmcHQtPm5vZGUsICZvYmotPnB0X3Ry ZWUpOwotCiAJCS8qCi0JCSAqIEEgc2lnbmFsIGNhbGxiYWNrIG1heSByZWxlYXNlIHRoZSBsYXN0 IHJlZmVyZW5jZSB0byB0aGlzCi0JCSAqIGZlbmNlLCBjYXVzaW5nIGl0IHRvIGJlIGZyZWVkLiBU aGF0IG9wZXJhdGlvbiBoYXMgdG8gYmUKLQkJICogbGFzdCB0byBhdm9pZCBhIHVzZSBhZnRlciBm cmVlIGluc2lkZSB0aGlzIGxvb3AsIGFuZCBtdXN0Ci0JCSAqIGJlIGFmdGVyIHdlIHJlbW92ZSB0 aGUgZmVuY2UgZnJvbSB0aGUgdGltZWxpbmUgaW4gb3JkZXIgdG8KLQkJICogcHJldmVudCBkZWFk bG9ja2luZyBvbiB0aW1lbGluZS0+bG9jayBpbnNpZGUKLQkJICogdGltZWxpbmVfZmVuY2VfcmVs ZWFzZSgpLgorCQkgKiBXZSBuZWVkIHRvIHRha2UgYSByZWZlcmVuY2UgdG8gYXZvaWQgYSByZWxl YXNlIGR1cmluZworCQkgKiBzaWduYWxsaW5nICh3aGljaCBjYW4gY2F1c2UgYSByZWN1cnNpdmUg bG9jayBvZiBvYmotPmxvY2spLgorCQkgKiBJZiByZWZjb3VudCB3YXMgYWxyZWFkeSB6ZXJvLCBh bm90aGVyIHRocmVhZCBpcyBhbHJlYWR5CisJCSAqIHRha2luZyBjYXJlIG9mIGRlc3Ryb3lpbmcg dGhlIGZlbmNlLgogCQkgKi8KLQkJZG1hX2ZlbmNlX3NpZ25hbF9sb2NrZWQoJnB0LT5iYXNlKTsK KwkJaWYgKCFkbWFfZmVuY2VfZ2V0X3JjdSgmcHQtPmJhc2UpKQorCQkJY29udGludWU7CisKKwkJ bGlzdF9tb3ZlX3RhaWwoJnB0LT5saW5rLCAmc2lnbmFsKTsKKwkJcmJfZXJhc2UoJnB0LT5ub2Rl LCAmb2JqLT5wdF90cmVlKTsKIAl9CiAKIAlzcGluX3VubG9ja19pcnEoJm9iai0+bG9jayk7CisK KwlsaXN0X2Zvcl9lYWNoX2VudHJ5X3NhZmUocHQsIG5leHQsICZzaWduYWwsIGxpbmspIHsKKwkJ LyoKKwkJICogVGhpcyBuZWVkcyB0byBiZSBjbGVhcmVkIGJlZm9yZSByZWxlYXNlLCBvdGhlcndp c2UgdGhlCisJCSAqIHRpbWVsaW5lX2ZlbmNlX3JlbGVhc2UgZnVuY3Rpb24gZ2V0cyBjb25mdXNl ZCBhYm91dCBhbHNvCisJCSAqIHJlbW92aW5nIHRoZSBmZW5jZSBmcm9tIHRoZSBwdF90cmVlLgor CQkgKi8KKwkJbGlzdF9kZWxfaW5pdCgmcHQtPmxpbmspOworCisJCWRtYV9mZW5jZV9zaWduYWwo JnB0LT5iYXNlKTsKKwkJZG1hX2ZlbmNlX3B1dCgmcHQtPmJhc2UpOworCX0KIH0KIAogLyoqCi0t IAoyLjIwLjEKCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f CmRyaS1kZXZlbCBtYWlsaW5nIGxpc3QKZHJpLWRldmVsQGxpc3RzLmZyZWVkZXNrdG9wLm9yZwpo dHRwczovL2xpc3RzLmZyZWVkZXNrdG9wLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2RyaS1kZXZlbAo=