From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thomas Hellstrom Subject: Re: [PATCH 1/2] drm/ttm: add a way to bo_wait for either the last read or last write Date: Fri, 07 Oct 2011 10:00:27 +0200 Message-ID: <4E8EB19B.2060605@shipmail.org> References: <1312749544-22052-1-git-send-email-maraeo@gmail.com> <4E8AF276.2060500@shipmail.org> <4E8BF131.1070404@shipmail.org> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8"; Format="flowed" Content-Transfer-Encoding: base64 Return-path: Received: from GOTHNET-SMTP2.gothnet.se (relay.gothnet.se [82.193.160.251]) by gabe.freedesktop.org (Postfix) with ESMTP id 299B19E760 for ; Fri, 7 Oct 2011 01:02:28 -0700 (PDT) In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: dri-devel-bounces+sf-dri-devel=m.gmane.org@lists.freedesktop.org Errors-To: dri-devel-bounces+sf-dri-devel=m.gmane.org@lists.freedesktop.org To: =?UTF-8?B?TWFyZWsgT2zFocOhaw==?= Cc: dri-devel@lists.freedesktop.org List-Id: dri-devel@lists.freedesktop.org T24gMTAvMDcvMjAxMSAxMjo0MiBBTSwgTWFyZWsgT2zFocOhayB3cm90ZToKPiBPbiBXZWQsIE9j dCA1LCAyMDExIGF0IDc6NTQgQU0sIFRob21hcyBIZWxsc3Ryb208dGhvbWFzQHNoaXBtYWlsLm9y Zz4gIHdyb3RlOgo+ICAgIAo+PiBJbiBhbnkgY2FzZSwgSSdtIG5vdCBzYXlpbmcgZmVuY2VzIGlz IHRoZSBiZXN0IHdheSB0byBmbHVzaCBidXQgc2luY2UgdGhlIGJvCj4+IGNvZGUgYXNzdW1lcyB0 aGF0IHNpZ25hbGluZyBhIHN5bmMgb2JqZWN0IG1lYW5zICJtYWtlIHRoZSBidWZmZXIgY29udGVu dHMKPj4gYXZhaWxhYmxlIGZvciBDUFUgcmVhZCAvIHdyaXRlIiwgaXQncyB1c3VhbGx5IGEgZ29v ZCB3YXkgdG8gZG8gaXQ7IHRoZXJlJ3MKPj4gZXZlbiBhIHN5bmNfb2JqX2ZsdXNoKCkgbWV0aG9k IHRoYXQgZ2V0cyBjYWxsZWQgd2hlbiBhIHBvdGVudGlhbCBmbHVzaCBuZWVkcwo+PiB0byBoYXBw ZW4uCj4+ICAgICAgCj4gSSBkb24ndCB0aGluayB3ZSB1c2UgaXQgbGlrZSB0aGF0LiBUbyBteSBr bm93bGVkZ2UsIHRoZSBwdXJwb3NlIG9mIHRoZQo+IHN5bmMgb2JqICh0byBSYWRlb24gR2FsbGl1 bSBkcml2ZXJzIGF0IGxlYXN0KSBpcyB0byBiZSBhYmxlIHRvIHdhaXQKPiBmb3IgdGhlIGxhc3Qg dXNlIG9mIGEgYnVmZmVyLiBXaGV0aGVyIHRoZSBjb250ZW50cyBjYW4gb3IgY2Fubm90IGJlCj4g YXZhaWxhYmxlIHRvIHRoZSBDUFUgaXMgdG90YWxseSBpcnJlbGV2YW50Lgo+Cj4gQ3VycmVudGx5 IChhbmQgaXQncyBhIHZlcnkgaW1wb3J0YW50IHBlcmZvcm1hbmNlIG9wdGltaXphdGlvbiksCj4g YnVmZmVycyBzdGF5IG1hcHBlZCBhbmQgYXZhaWxhYmxlIGZvciBDUFUgcmVhZC93cml0ZSBkdXJp bmcgdGhlaXIKPiBmaXJzdCBtYXBfYnVmZmVyIGNhbGwuIFVubWFwX2J1ZmZlciBpcyBhIG5vLW9w LiBUaGUgdW5tYXBwaW5nIGhhcHBlbnMKPiBvbiBidWZmZXIgZGVzdHJ1Y3Rpb24uIFdlIG9ubHkg Y2FsbCBib193YWl0IHdoZW4gd2Ugd2FudCB0byB3YWl0IGZvcgo+IHRoZSBHUFUgdW50aWwgaXQn cyBkb25lIHdpdGggdGhlIGJ1ZmZlciAod2UgZG9uJ3QgYWx3YXlzIHdhbnQgdGhhdCwKPiBzb21l dGltZXMgd2Ugd2FudCB0byB1c2UgdGhlIHVuc3ljaHJvbml6ZWQgZmxhZykuIE90aGVyd2lzZSB0 aGUKPiBjb250ZW50cyBvZiBidWZmZXJzIGFyZSBhdmFpbGFibGUgYXQgKmFueSB0aW1lKi4KPgo+ IFdlIGNvdWxkIHByb2JhYmx5IGltcGxlbWVudCBib193YWl0IHByaXZhdGVseSBpbiB0aGUga2Vy bmVsIGRyaXZlciBhbmQKPiBub3QgdXNlIHR0bV9ib193YWl0LiBJIHByZWZlcnJlZCBjb2RlIHNo YXJpbmcgdGhvdWdoLgo+Cj4gVGV4dHVyZXMgKGVzcGVjaWFsbHkgdGhlIHRpbGVkIG9uZXMpIGFy ZSBuZXZlciBtYXBwZWQgZGlyZWN0bHkgYW5kIGEKPiB0ZW1wb3Jhcnkgc3RhZ2luZyByZXNvdXJj ZSBpcyB1c2VkIGluc3RlYWQsIHNvIHdlIGRvbid0IGFjdHVhbGx5Cj4gcG9sbHV0ZSBhZGRyZXNz IHNwYWNlIHRoYXQgbXVjaC4gKGluIGNhc2UgeW91IHdvdWxkIGhhdmUgc3VjaCBhCj4gcmVtYXJr KSBXZSB3aWxsIHVzZSBzdGFnaW5nIHJlc291cmNlcyBmb3IgYnVmZmVycyB0b28sIGJ1dCBpdCdz IHJlYWxseQo+IHRoZSBsYXN0IHJlc29ydCB0byBhdm9pZCB3YWl0aW5nIHdoZW4gZGlyZWN0IGFj Y2VzcyBjYW4ndCBiZSB1c2VkLgo+Cj4KPiAgICAKPj4+PiAyKSBDYW4ndCB3ZSBzYXkgdGhhdCBh IHdyaXRlX3N5bmNfb2JqIGlzIHNpbXBseSBhIHN5bmNfb2JqPyBXaGF0J3MgdGhlCj4+Pj4gZGlm ZmVyZW5jZSBiZXR3ZWVuIHRob3NlIHR3bz8gSSB0aGluayB3ZSBzaG91bGQgcmVtb3ZlIHRoZSB3 cml0ZV9zeW5jX29iago+Pj4+IGJvCj4+Pj4gbWVtYmVyLgo+Pj4+Cj4+Pj4gICAgICAgICAgCj4+ PiBPa2F5LCBidXQgSSB0aGluayB3ZSBzaG91bGQgcmVtb3ZlIHN5bmNfb2JqIGluc3RlYWQsIGFu ZCBrZWVwIHdyaXRlCj4+PiBhbmQgcmVhZCBzeW5jIG9ianMuIEluIHRoZSBjYXNlIG9mIFJFQURX UklURSB1c2FnZSwgcmVhZF9zeW5jX29iago+Pj4gd291bGQgYmUgZXF1YWwgdG8gd3JpdGVfc3lu Y19vYmouCj4+Pgo+Pj4KPj4+ICAgICAgICAKPj4gU3VyZSwgSSdtIGZpbmUgd2l0aCB0aGF0Lgo+ Pgo+PiBPbmUgb3RoZXIgdGhpbmcsIHRob3VnaCwgdGhhdCBtYWtlcyBtZSBhIGxpdHRsZSBwdXp6 bGVkOgo+Pgo+PiBMZXQncyBhc3N1bWUgeW91IGRvbid0IGFsbG93IHJlYWRlcnMgYW5kIHdyaXRl cnMgYXQgdGhlIHNhbWUgdGltZSwgd2hpY2ggaXMKPj4gbXkgcGVyY2VwdGlvbiBvZiBob3cgcmVh ZC0gYW5kIHdyaXRlIGZlbmNlcyBzaG91bGQgd29yazsgeW91IGVpdGhlciBoYXZlIGEKPj4gbGlz dCBvZiByZWFkIGZlbmNlcyBvciBhIHNpbmdsZSB3cml0ZSBmZW5jZSAoaW4gdGhlIHNhbWUgd2F5 IGEgcmVhZC13cml0ZQo+PiBsb2NrIHdvcmtzKS4KPj4KPj4gTm93LCBpZiB5b3Ugb25seSBhbGxv dyBhIHNpbmdsZSByZWFkIGZlbmNlLCBsaWtlIGluIHRoaXMgcGF0Y2guIFRoYXQgaW1wbGllcwo+ PiB0aGF0IHlvdSBjYW4gb25seSBoYXZlIGVpdGhlciBhIHNpbmdsZSByZWFkIGZlbmNlIG9yIGEg c2luZ2xlIHdyaXRlIGZlbmNlIGF0Cj4+IGFueSBvbmUgdGltZS4gV2UnZCBvbmx5IG5lZWQgYSBz aW5nbGUgZmVuY2UgcG9pbnRlciBvbiB0aGUgYm8sIGFuZAo+PiBzeW5jX29ial9hcmcgd291bGQg dGVsbCB1cyB3aGV0aGVyIHRvIHNpZ25hbCB0aGUgZmVuY2UgZm9yIHJlYWQgb3IgZm9yIHdyaXRl Cj4+IChhc3N1bWluZyB0aGF0IHN5bmNfb2JqX2FyZyB3YXMgc2V0IHVwIHRvIGluZGljYXRlIHJl YWQgLyB3cml0ZSBhdAo+PiB2YWxpZGF0aW9uIHRpbWUpLCB0aGVuIHRoZSBwYXRjaCByZWFsbHkg aXNuJ3QgbmVjZXNzYXJ5IGF0IGFsbCwgYXMgaXQgb25seQo+PiBhbGxvd3MgYSBzaW5nbGUgcmVh ZCBmZW5jZT8KPj4KPj4gT3IgaXMgaXQgdGhhdCB5b3Ugd2FudCB0byBhbGxvdyByZWFkLSBhbmQg d3JpdGUgZmVuY2VzIGNvLWV4aXN0aW5nPyBJbiB0aGF0Cj4+IGNhc2UsIHdoYXQncyB0aGUgdXNl IGNhc2U/Cj4+ICAgICAgCj4gVGhlcmUgYXJlIGxvdHMgb2YgcmVhZC13cml0ZSB1c2UgY2FzZXMg d2hpY2ggZG9uJ3QgbmVlZCBhbnkgYmFycmllcnMKPiBvciBmbHVzaGluZy4gVGhlIG9idmlvdXMg b25lcyBhcmUgY29sb3IgYmxlbmRpbmcgYW5kIGRlcHRoLXN0ZW5jaWwKPiBidWZmZXJpbmcuIFRo ZSBPcGVuR0wgYXBwbGljYXRpb24gaXMgYWxzbyBhbGxvd2VkIHRvIHVzZSBhIHN1YnJhbmdlIG9m Cj4gYSBidWZmZXIgYXMgYSB2ZXJ0ZXggYnVmZmVyIChyZWFkLW9ubHkpIGFuZCBhbm90aGVyIGRp c2pvaW50IHN1YnJhbmdlCj4gb2YgdGhlIHNhbWUgYnVmZmVyIGZvciB0cmFuc2Zvcm0gZmVlZGJh Y2sgKHdyaXRlLW9ubHkpLCB3aGljaCBraW5kYQo+IG1ha2VzIG1lIHRoaW5rIGFib3V0IHdoZXRo ZXIgd2Ugc2hvdWxkIHRyYWNrIHN1YnJhbmdlcyBpbnN0ZWFkIG9mCj4gdHJlYXRpbmcgYSB3aG9s ZSBidWZmZXIgYXMgImJ1c3kiLiBJdCBnZXRzIGV2ZW4gbW9yZSBmdW5reSB3aXRoCj4gQVJCX3No YWRlcl9pbWFnZV9sb2FkX3N0b3JlLCB3aGljaCBzdXBwb3J0cyBhdG9taWMgcmVhZC1tb2RpZnkt d3JpdGUKPiBvcGVyYXRpb25zIG9uIHRleHR1cmVzLCBub3QgdG8gbWVudGlvbiBhdG9taWMgbWVt b3J5IG9wZXJhdGlvbnMgaW4KPiBjb21wdXRlIHNoYWRlcnMgKHdhaXQsIGlzbid0IHRoYXQgYWxz byBleHBvc2VkIGluIEdMIGFzCj4gR0xfQVJCX3NoYWRlcl9hdG9taWNfY291bnRlcnM/KS4KPgo+ IEkgd2FzIHRoaW5raW5nIHdoZXRoZXIgdGhlIHR3byBzeW5jIG9ianMgc2hvdWxkIGJlICJyZWFk IiBhbmQKPiAicmVhZHdyaXRlIiwgb3IgInJlYWQiIGFuZCAid3JpdGUiLiBJIGNob3NlIHRoZSBs YXR0ZXIsIGJlY2F1c2UgaXQncwo+IG1vcmUgZmluZS1ncmFpbmVkIGFuZCB3ZSBoYXZlIHRvIGtl ZXAgYXQgbGVhc3QgdHdvIG9mIHRoZW0gYXJvdW5kCj4gYW55d2F5Lgo+Cj4gU28gbm93IHRoYXQg eW91IGtub3cgd2hhdCB3ZSB1c2Ugc3luYyBvYmpzIGZvciwgd2hhdCBhcmUgeW91ciBpZGVhcyBv bgo+IHJlLWltcGxlbWVudGluZyB0aGF0IHBhdGNoIGluIGEgd2F5IHRoYXQgaXMgb2theSB3aXRo IHlvdT8gQmVzaWRlcwo+IHJlbW92aW5nIHRoZSB0aGlyZCBzeW5jIG9ianMgb2YgY291cnNlLgo+ Cj4gTWFyZWsKPiAgICAKT0suIEZpcnN0IEkgdGhpbmsgd2UgbmVlZCB0byBtYWtlIGEgZGlzdGlu Y3Rpb246IGJvIHN5bmMgb2JqZWN0cyB2cyAKZHJpdmVyIGZlbmNlcy4gVGhlIGJvIHN5bmMgb2Jq IGFwaSBpcyB0aGVyZSB0byBzdHJpY3RseSBwcm92aWRlIApmdW5jdGlvbmFsaXR5IHRoYXQgdGhl IHR0bSBibyBzdWJzeXN0ZW0gaXMgdXNpbmcsIGFuZCB0aGF0IGZvbGxvd3MgYSAKc2ltcGxlIHNl dCBvZiBydWxlczoKCjEpIHRoZSBibyBzdWJzeXN0ZW0gZG9lcyBuZXZlciBhc3N1bWUgc3luYyBv YmplY3RzIGFyZSBvcmRlcmVkLiBUaGF0IAptZWFucyB0aGUgYm8gc3Vic3lzdGVtIG5lZWRzIHRv IHdhaXQgb24gYSBzeW5jIG9iamVjdCBiZWZvcmUgcmVtb3ZpbmcgaXQgCmZyb20gYSBidWZmZXIu IEFueSBvdGhlciBhc3N1bXB0aW9uIGlzIGJ1Z2d5IGFuZCBtdXN0IGJlIGZpeGVkLiBCVVQsIGlm IAp0aGF0IGFzc3VtcHRpb24gdGFrZXMgcGxhY2UgaW4gdGhlIGRyaXZlciB1bmtub3dpbmdseSBm cm9tIHRoZSB0dG0gYm8gCnN1YnN5c3RlbSAod2hpY2ggaXMgdXN1YWxseSB0aGUgY2FzZSksIGl0 J3MgT0suCgoyKSBXaGVuIHRoZSBzeW5jIG9iamVjdChzKSBhdHRhY2hlZCB0byB0aGUgYm8gYXJl IHNpZ25hbGVkIHRoZSB0dG0gYm8gCnN1YnN5c3RlbSBpcyBmcmVlIHRvIGNvcHkgdGhlIGJvIGNv bnRlbnRzIGFuZCB0byB1bmJpbmQgdGhlIGJvLgoKMykgVGhlIHR0bSBibyBzeXN0ZW0gYWxsb3dz IHN5bmMgb2JqZWN0cyB0byBiZSBzaWduYWxlZCBpbiBkaWZmZXJlbnQgCndheXMgb3BhcXVlIHRv IHRoZSBzdWJzeXN0ZW0gdXNpbmcgc3luY19vYmpfYXJnLiBUaGUgZHJpdmVyIGlzIApyZXNwb25z aWJsZSBmb3Igc2V0dGluZyB1cCB0aGF0IGFyZ3VtZW50LgoKNCkgRHJpdmVyIGZlbmNlcyBtYXkg YmUgdXNlZCBmb3Igb3IgZXhwb3NlIG90aGVyIGZ1bmN0aW9uYWxpdHkgb3IgCmFkYXB0aW9ucyB0 byBBUElzIGFzIGxvbmcgYXMgdGhlIHN5bmMgb2JqIGFwaSBleHBvcnRlZCB0byB0aGUgYm8gCnN5 YnN5c3RlbSBmb2xsb3dzIHRoZSBhYm92ZSBydWxlcy4KClRoaXMgbWVhbnMgdGhlIGZvbGxvd2lu ZyB3IHIgdCB0aGUgcGF0Y2guCgpBKSBpdCB2aW9sYXRlcyAxKS4gVGhpcyBpcyBhIGJ1ZyB0aGF0 IG11c3QgYmUgZml4ZWQuIEFzc3VtcHRpb25zIHRoYXQgaWYgCm9uZSBzeW5jIG9iamVjdCBpcyBz aW5nbmFsZWQsIGFub3RoZXIgc3luYyBvYmplY3QgaXMgYWxzbyBzaWduYWxlZCBtdXN0IApiZSBk b25lIGluIHRoZSBkcml2ZXIgYW5kIG5vdCBpbiB0aGUgYm8gc3Vic3lzdGVtLiBIZW5jZSB3ZSBu ZWVkIHRvIApleHBsaWNpdGx5IHdhaXQgZm9yIGEgZmVuY2UgdG8gcmVtb3ZlIGl0IGZyb20gdGhl IGJvLgoKQikgdGhlIHN5bmNfb2JqX2FyZyBjYXJyaWVzICpwZXItc3luYy1vYmoqIGluZm9ybWF0 aW9uIG9uIGhvdyBpdCBzaG91bGQgCmJlIHNpZ25hbGVkLiBJZiB3ZSBuZWVkIHRvIGF0dGFjaCBt dWx0aXBsZSBzeW5jIG9iamVjdHMgdG8gYSBidWZmZXIgCm9iamVjdCwgd2UgYWxzbyBuZWVkIG11 bHRpcGxlIHN5bmNfb2JqX2FyZ3MuIFRoaXMgaXMgYSBidWcgYW5kIG5lZWRzIHRvIApiZSBmaXhl ZC4KCkMpIFRoZXJlIGlzIHJlYWxseSBvbmx5IG9uZSByZWFzb24gdGhhdCB0aGUgdHRtIGJvIHN1 YnN5c3RlbSBzaG91bGQgY2FyZSAKYWJvdXQgbXVsdGlwbGUgc3luYyBvYmplY3RzLCBhbmQgdGhh dCBpcyBiZWNhdXNlIHRoZSBkcml2ZXIgY2FuJ3Qgb3JkZXIgCnRoZW0gZWZmaWNpZW50bHkuIEEg c3VjaCBleGFtcGxlIHdvdWxkIGJlIGhhcmR3YXJlIHdpdGggbXVsdGlwbGUgcGlwZXMgCnJlYWRp bmcgc2ltdWx0YW5lb3VzbHkgZnJvbSB0aGUgc2FtZSB0ZXh0dXJlIGJ1ZmZlci4gQ3VycmVudGx5 IHdlIGRvbid0IApzdXBwb3J0IHRoaXMgc28gb25seSB0aGUgKmxhc3QqIHN5bmMgb2JqZWN0IG5l ZWRzIHRvIGJlIGtub3cgYnkgdGhlIGJvIApzdWJzeXN0ZW0uIEtlZXBpbmcgdHJhY2sgb2YgbXVs dGlwbGUgZmVuY2VzIGdlbmVyYXRlcyBhIGxvdCBvZiAKY29tcGxldGVseSB1bm5lY2Vzc2FyeSBj b2RlIGluIHRoZSB0dG1fYm9fdXRpbCBmaWxlLCB0aGUgdHRtX2JvX3ZtIGZpbGUsIAphbmQgd2ls bCBiZSBhIG5pZ2h0bWFyZSBpZiAvIHdoZW4gd2UgdHJ1bHkgc3VwcG9ydCBwaXBlbGluZWQgbW92 ZXMuCgpBcyBJIHVuZGVyc3RhbmQgaXQgZnJvbSB5b3VyIHBhdGNoZXMsIHlvdSB3YW50IHRvIGtl ZXAgbXVsdGlwbGUgZmVuY2VzIAphcm91bmQgb25seSB0byB0cmFjayByZW5kZXJpbmcgaGlzdG9y eS4gSWYgd2Ugd2FudCB0byBkbyB0aGF0IApnZW5lcmljYWxseSwgaSBzdWdnZXN0IGRvaW5nIGl0 IGluIHRoZSBleGVjYnVmIHV0aWwgY29kZSBpbiB0aGUgCmZvbGxvd2luZyB3YXk6CgpzdHJ1Y3Qg dHRtX2V1X3JlbmRlcmluZ19oaXN0b3J5IHsKICAgICB2b2lkICpsYXN0X3JlYWRfc3luY19vYmo7 CiAgICAgdm9pZCAqbGFzdF9yZWFkX3N5bmNfb2JqX2FyZzsKICAgICB2b2lkICpsYXN0X3dyaXRl X3N5bmNfb2JqOwogICAgIHZvaWQgKmxhc3Rfd3JpdGVfc3luY19vYmpfYXJnOwp9CgpFbWJlZCB0 aGlzIHN0cnVjdHVyZSBpbiB0aGUgcmFkZW9uX2JvLCBhbmQgYnVpbGQgYSBzbWFsbCBhcGkgYXJv dW5kIGl0LCAKaW5jbHVkaW5nICpvcHRpb25hbGx5KiBwYXNzaW5nIGl0IHRvIHRoZSBleGlzdGlu ZyBleGVjYnVmIHV0aWxpdGllcywgYW5kIAp5b3Ugc2hvdWxkIGJlIGRvbmUuIFRoZSBib191dGls IGNvZGUgYW5kIGJvX3ZtIGNvZGUgZG9lc24ndCBjYXJlIGFib3V0IAp0aGUgcmVuZGVyaW5nIGhp c3RvcnkuIE9ubHkgdGhhdCB0aGUgYm8gaXMgY29tcGxldGVseSBpZGxlLgoKTm90ZSBhbHNvIHRo YXQgd2hlbiBhbiBhY2NlbGVyYXRlZCBibyBtb3ZlIGlzIHNjaGVkdWxlZCwgdGhlIGRyaXZlciAK bmVlZHMgdG8gdXBkYXRlIHRoaXMgc3RydWN0CgovVGhvbWFzCgoKCgoKCgoKCgoKCgoKCgoKCgoK X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KZHJpLWRldmVs IG1haWxpbmcgbGlzdApkcmktZGV2ZWxAbGlzdHMuZnJlZWRlc2t0b3Aub3JnCmh0dHA6Ly9saXN0 cy5mcmVlZGVza3RvcC5vcmcvbWFpbG1hbi9saXN0aW5mby9kcmktZGV2ZWwK