From mboxrd@z Thu Jan 1 00:00:00 1970 From: Laurent Pinchart Subject: Re: [PATCH v2 2/3] v4l: vsp1: Postpone page flip in event of display list race Date: Sun, 05 Mar 2017 01:46:57 +0200 Message-ID: <2000889.heoPCI45nc@avalon> References: <7b4ce1b20550d8651feceacf638ffc46be7400f7.1488592678.git-series.kieran.bingham+renesas@ideasonboard.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from galahad.ideasonboard.com (galahad.ideasonboard.com [IPv6:2001:4b98:dc2:45:216:3eff:febb:480d]) by gabe.freedesktop.org (Postfix) with ESMTPS id 134056E080 for ; Sat, 4 Mar 2017 23:46:23 +0000 (UTC) In-Reply-To: <7b4ce1b20550d8651feceacf638ffc46be7400f7.1488592678.git-series.kieran.bingham+renesas@ideasonboard.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: Kieran Bingham Cc: linux-renesas-soc@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-media@vger.kernel.org List-Id: dri-devel@lists.freedesktop.org SGkgS2llcmFuLAoKVGhhbmsgeW91IGZvciB0aGUgcGF0Y2guCgpPbiBTYXR1cmRheSAwNCBNYXIg MjAxNyAwMjowMToxOCBLaWVyYW4gQmluZ2hhbSB3cm90ZToKPiBJZiB3ZSB0cnkgdG8gY29tbWl0 IHRoZSBkaXNwbGF5IGxpc3Qgd2hpbGUgYW4gdXBkYXRlIGlzIHBlbmRpbmcsIHdlIGhhdmUKPiBt aXNzZWQgb3VyIG9wcG9ydHVuaXR5LiBUaGUgZGlzcGxheSBsaXN0IG1hbmFnZXIgd2lsbCBob2xk IHRoZSBjb21taXQKPiB1bnRpbCB0aGUgbmV4dCBpbnRlcnJ1cHQuCj4gCj4gSW4gdGhpcyBldmVu dCwgd2UgaW5mb3JtIHRoZSB2c3AxIGNvbXBsZXRpb24gY2FsbGJhY2sgaGFuZGxlciBzbyB0aGF0 Cj4gdGhlIGR1IHdpbGwgbm90IHBlcmZvcm0gYSBwYWdlIGZsaXAgb3V0IG9mIHR1cm4uCj4gCj4g U2lnbmVkLW9mZi1ieTogS2llcmFuIEJpbmdoYW0gPGtpZXJhbi5iaW5naGFtK3JlbmVzYXNAaWRl YXNvbmJvYXJkLmNvbT4KPiAtLS0KPiAgZHJpdmVycy9tZWRpYS9wbGF0Zm9ybS92c3AxL3ZzcDFf ZGwuYyAgIHwgIDkgKysrKysrKy0tCj4gIGRyaXZlcnMvbWVkaWEvcGxhdGZvcm0vdnNwMS92c3Ax X2RsLmggICB8ICAyICstCj4gIGRyaXZlcnMvbWVkaWEvcGxhdGZvcm0vdnNwMS92c3AxX2RybS5j ICB8ICA0ICsrKy0KPiAgZHJpdmVycy9tZWRpYS9wbGF0Zm9ybS92c3AxL3ZzcDFfcGlwZS5jIHwg IDYgKysrKystCj4gIGRyaXZlcnMvbWVkaWEvcGxhdGZvcm0vdnNwMS92c3AxX3BpcGUuaCB8ICAy ICsrCj4gIDUgZmlsZXMgY2hhbmdlZCwgMTggaW5zZXJ0aW9ucygrKSwgNSBkZWxldGlvbnMoLSkK PiAKPiBkaWZmIC0tZ2l0IGEvZHJpdmVycy9tZWRpYS9wbGF0Zm9ybS92c3AxL3ZzcDFfZGwuYwo+ IGIvZHJpdmVycy9tZWRpYS9wbGF0Zm9ybS92c3AxL3ZzcDFfZGwuYyBpbmRleCBhZDU0NWFmZjRl MzUuLmY4ZThjOTBmMjJiYwo+IDEwMDY0NAo+IC0tLSBhL2RyaXZlcnMvbWVkaWEvcGxhdGZvcm0v dnNwMS92c3AxX2RsLmMKPiArKysgYi9kcml2ZXJzL21lZGlhL3BsYXRmb3JtL3ZzcDEvdnNwMV9k bC5jCj4gQEAgLTU1Nyw5ICs1NTcsMTAgQEAgdm9pZCB2c3AxX2RsbV9pcnFfZGlzcGxheV9zdGFy dChzdHJ1Y3QgdnNwMV9kbF9tYW5hZ2VyCj4gKmRsbSkKPiAgCXNwaW5fdW5sb2NrKCZkbG0tPmxv Y2spOwo+ICB9Cj4gCj4gLXZvaWQgdnNwMV9kbG1faXJxX2ZyYW1lX2VuZChzdHJ1Y3QgdnNwMV9k bF9tYW5hZ2VyICpkbG0pCj4gK2ludCB2c3AxX2RsbV9pcnFfZnJhbWVfZW5kKHN0cnVjdCB2c3Ax X2RsX21hbmFnZXIgKmRsbSkKPiAgewo+ICAJc3RydWN0IHZzcDFfZGV2aWNlICp2c3AxID0gZGxt LT52c3AxOwo+ICsJaW50IHJldCA9IDA7Cj4gCj4gIAlzcGluX2xvY2soJmRsbS0+bG9jayk7Cj4g Cj4gQEAgLTU3OCw4ICs1NzksMTAgQEAgdm9pZCB2c3AxX2RsbV9pcnFfZnJhbWVfZW5kKHN0cnVj dCB2c3AxX2RsX21hbmFnZXIKPiAqZGxtKSAqIGJlZm9yZSBpbnRlcnJ1cHQgcHJvY2Vzc2luZy4g VGhlIGhhcmR3YXJlIGhhc24ndCB0YWtlbiB0aGUgdXBkYXRlICoKPiBpbnRvIGFjY291bnQgeWV0 LCB3ZSdsbCB0aHVzIHNraXAgb25lIGZyYW1lIGFuZCByZXRyeS4KPiAgCSAqLwo+IC0JaWYgKHZz cDFfcmVhZCh2c3AxLCBWSTZfRExfQk9EWV9TSVpFKSAmIFZJNl9ETF9CT0RZX1NJWkVfVVBEKQo+ ICsJaWYgKHZzcDFfcmVhZCh2c3AxLCBWSTZfRExfQk9EWV9TSVpFKSAmIFZJNl9ETF9CT0RZX1NJ WkVfVVBEKSB7Cj4gKwkJcmV0ID0gLUVCVVNZOwoKR2V0dGluZyB0aGVyZSwgYnV0IG5vdCBxdWl0 ZSA6LSkKCldoYXQgd2UgbmVlZCB0byBwcm90ZWN0IGFnYWluc3QgaXMgdGhlIGRpc3BsYXkgbGlz dCBub3QgYmVpbmcgY29tbWl0dGVkIGVhcmx5IAplbm91Z2gsIHJlc3VsdGluZyBpbiBvbmUgZnJh bWUgc2tpcCBpbiB0aGUgaGFyZHdhcmUuIFRoZSBnb29kIG5ld3MgaXMgdGhhdCB0aGUgCmRyaXZl ciBhbHJlYWR5IGRldGVjdHMgdGhlIG9wcG9zaXRlIGNvbmRpdGlvbiBqdXN0IGJlbG93LiAKCj4g IAkJZ290byBkb25lOwo+ICsJfQo+IAo+ICAJLyogVGhlIGRldmljZSBzdGFydHMgcHJvY2Vzc2lu ZyB0aGUgcXVldWVkIGRpc3BsYXkgbGlzdCByaWdodCBhZnRlciAKdGhlCj4gIAkgKiBmcmFtZSBl bmQgaW50ZXJydXB0LiBUaGUgZGlzcGxheSBsaXN0IHRodXMgYmVjb21lcyBhY3RpdmUuCgpUaGlz IGlzIHdoYXQgd2Ugd2FudCB0byByZXBvcnQuIFlvdSBjYW4gc2ltcGx5IHJldHVybiBhIGJvb2wg dGhhdCB3aWxsIHRlbGwgCndoZXRoZXIgdGhlIHByZXZpb3VzIGRpc3BsYXkgbGlzdCBoYXMgY29t cGxldGVkIGF0IGZyYW1lIGVuZC4gWW91IHNob3VsZCAKcmV0dXJuIHRydWUgd2hlbiB0aGUgY29u ZGl0aW9uIHJpZ2h0IGJlbG93IHRoaXMgY29tbWVudCBpcyB0cnVlLCBhcyB3ZWxsIGFzIAp3aGVu IHVzaW5nIGhlYWRlciBtb2RlICh0byBhdm9pZCBicmVha2luZyBtZW0tdG8tbWVtIHBpcGVsaW5l cyksIGFuZCBmYWxzZSBpbiAKYWxsIG90aGVyIGNhc2VzLgoKPiBAQCAtNjA2LDYgKzYwOSw4IEBA IHZvaWQgdnNwMV9kbG1faXJxX2ZyYW1lX2VuZChzdHJ1Y3QgdnNwMV9kbF9tYW5hZ2VyICpkbG0p Cj4gCj4gIGRvbmU6Cj4gIAlzcGluX3VubG9jaygmZGxtLT5sb2NrKTsKPiArCj4gKwlyZXR1cm4g cmV0Owo+ICB9Cj4gCj4gIC8qIEhhcmR3YXJlIFNldHVwICovCj4gZGlmZiAtLWdpdCBhL2RyaXZl cnMvbWVkaWEvcGxhdGZvcm0vdnNwMS92c3AxX2RsLmgKPiBiL2RyaXZlcnMvbWVkaWEvcGxhdGZv cm0vdnNwMS92c3AxX2RsLmggaW5kZXggNzEzMWFhM2M1OTc4Li5jNzcyYTFkOTI1MTMKPiAxMDA2 NDQKPiAtLS0gYS9kcml2ZXJzL21lZGlhL3BsYXRmb3JtL3ZzcDEvdnNwMV9kbC5oCj4gKysrIGIv ZHJpdmVycy9tZWRpYS9wbGF0Zm9ybS92c3AxL3ZzcDFfZGwuaAo+IEBAIC0yOCw3ICsyOCw3IEBA IHN0cnVjdCB2c3AxX2RsX21hbmFnZXIgKnZzcDFfZGxtX2NyZWF0ZShzdHJ1Y3QgdnNwMV9kZXZp Y2UKPiAqdnNwMSwgdm9pZCB2c3AxX2RsbV9kZXN0cm95KHN0cnVjdCB2c3AxX2RsX21hbmFnZXIg KmRsbSk7Cj4gIHZvaWQgdnNwMV9kbG1fcmVzZXQoc3RydWN0IHZzcDFfZGxfbWFuYWdlciAqZGxt KTsKPiAgdm9pZCB2c3AxX2RsbV9pcnFfZGlzcGxheV9zdGFydChzdHJ1Y3QgdnNwMV9kbF9tYW5h Z2VyICpkbG0pOwo+IC12b2lkIHZzcDFfZGxtX2lycV9mcmFtZV9lbmQoc3RydWN0IHZzcDFfZGxf bWFuYWdlciAqZGxtKTsKPiAraW50IHZzcDFfZGxtX2lycV9mcmFtZV9lbmQoc3RydWN0IHZzcDFf ZGxfbWFuYWdlciAqZGxtKTsKPiAKPiAgc3RydWN0IHZzcDFfZGxfbGlzdCAqdnNwMV9kbF9saXN0 X2dldChzdHJ1Y3QgdnNwMV9kbF9tYW5hZ2VyICpkbG0pOwo+ICB2b2lkIHZzcDFfZGxfbGlzdF9w dXQoc3RydWN0IHZzcDFfZGxfbGlzdCAqZGwpOwo+IGRpZmYgLS1naXQgYS9kcml2ZXJzL21lZGlh L3BsYXRmb3JtL3ZzcDEvdnNwMV9kcm0uYwo+IGIvZHJpdmVycy9tZWRpYS9wbGF0Zm9ybS92c3Ax L3ZzcDFfZHJtLmMgaW5kZXggODVlNWViY2E4MmE1Li42ZjJkZDQyY2EwMWIKPiAxMDA2NDQKPiAt LS0gYS9kcml2ZXJzL21lZGlhL3BsYXRmb3JtL3ZzcDEvdnNwMV9kcm0uYwo+ICsrKyBiL2RyaXZl cnMvbWVkaWEvcGxhdGZvcm0vdnNwMS92c3AxX2RybS5jCj4gQEAgLTQwLDEwICs0MCwxMiBAQCBz dGF0aWMgdm9pZCB2c3AxX2R1X3BpcGVsaW5lX2ZyYW1lX2VuZChzdHJ1Y3QKPiB2c3AxX3BpcGVs aW5lICpwaXBlKSB7Cj4gIAlzdHJ1Y3QgdnNwMV9kcm0gKmRybSA9IHRvX3ZzcDFfZHJtKHBpcGUp Owo+IAo+IC0JaWYgKGRybS0+ZHVfY29tcGxldGUgJiYgZHJtLT5kdV9wZW5kaW5nKSB7Cj4gKwlp ZiAoZHJtLT5kdV9jb21wbGV0ZSAmJiBkcm0tPmR1X3BlbmRpbmcgJiYgIXBpcGUtPmRsX3Bvc3Rw b25lZCkgewo+ICAJCWRybS0+ZHVfY29tcGxldGUoZHJtLT5kdV9wcml2YXRlKTsKPiAgCQlkcm0t PmR1X3BlbmRpbmcgPSBmYWxzZTsKPiAgCX0KPiArCj4gKwlwaXBlLT5kbF9wb3N0cG9uZWQgPSBm YWxzZTsKPiAgfQo+IAo+ICAvKiAtLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0t LS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0KPiBkaWZmIC0tZ2l0IGEvZHJpdmVy cy9tZWRpYS9wbGF0Zm9ybS92c3AxL3ZzcDFfcGlwZS5jCj4gYi9kcml2ZXJzL21lZGlhL3BsYXRm b3JtL3ZzcDEvdnNwMV9waXBlLmMgaW5kZXggMjgwYmEwODA0Njk5Li4zYzVhYWU4NzY3ZGQKPiAx MDA2NDQKPiAtLS0gYS9kcml2ZXJzL21lZGlhL3BsYXRmb3JtL3ZzcDEvdnNwMV9waXBlLmMKPiAr KysgYi9kcml2ZXJzL21lZGlhL3BsYXRmb3JtL3ZzcDEvdnNwMV9waXBlLmMKPiBAQCAtMjk3LDEw ICsyOTcsMTQgQEAgYm9vbCB2c3AxX3BpcGVsaW5lX3JlYWR5KHN0cnVjdCB2c3AxX3BpcGVsaW5l ICpwaXBlKQo+IAo+ICB2b2lkIHZzcDFfcGlwZWxpbmVfZnJhbWVfZW5kKHN0cnVjdCB2c3AxX3Bp cGVsaW5lICpwaXBlKQo+ICB7Cj4gKwlpbnQgcmV0Owo+ICsKPiAgCWlmIChwaXBlID09IE5VTEwp Cj4gIAkJcmV0dXJuOwo+IAo+IC0JdnNwMV9kbG1faXJxX2ZyYW1lX2VuZChwaXBlLT5vdXRwdXQt PmRsbSk7Cj4gKwlyZXQgPSB2c3AxX2RsbV9pcnFfZnJhbWVfZW5kKHBpcGUtPm91dHB1dC0+ZGxt KTsKPiArCWlmIChyZXQpCj4gKwkJcGlwZS0+ZGxfcG9zdHBvbmVkID0gdHJ1ZTsKClRoaXMgY2Fu IGJlIHNpbXBsaWZpZWQgZ3JlYXRseS4gSWYgdnNwMV9kbG1faXJxX2ZyYW1lX2VuZCgpIHJldHVy bnMgZmFsc2UsIApyZXR1cm4gaW1tZWRpYXRlbHkgd2l0aG91dCBjYWxsaW5nIHRoZSBwaXBlLT5m cmFtZV9lbmQoKSBoYW5kbGVyIG9yIAppbmNyZW1lbnRpbmcgdGhlIHNlcXVlbmNlIG51bWJlciwg YXMgdGhlIGZyYW1lIGhhcyBub3QgY29tcGxldGVkLiBZb3UgY2FuIHRoZW4gCnJlbW92ZSB0aGUg ZGxfcG9zdHBvbmVkIGZpZWxkIGZyb20gdGhlIHZzcDFfcGlwZWxpbmUgc3RydWN0dXJlIGFuZCBj YWxsIHRoZSAKLmR1X2NvbXBsZXRlKCkgaGFuZGxlciB1bmNvbmRpdGlvbmFsbHkgaW4gdnNwMV9k dV9waXBlbGluZV9mcmFtZV9lbmQoKSAKKHByb3ZpZGVkIGl0J3Mgbm90IE5VTEwgb2YgY291cnNl KS4gQXMgdGhlIHZzcDFfZGxtX2lycV9mcmFtZV9lbmQoKSBmdW5jdGlvbiAKY2FuJ3QgcmV0dXJu IHRydWUgaWYgYSBjb21taXQgaGFzbid0IGJlZW4gcXVldWVkIGluIHRoZSBmaXJzdCBwbGFjZSwg dGhlcmUncyAKbm8gbmVlZCBmb3IgYSBkbF9wZW5kaW5nIGZsYWcgZWl0aGVyLgoKPiAKPiAgCWlm IChwaXBlLT5mcmFtZV9lbmQpCj4gIAkJcGlwZS0+ZnJhbWVfZW5kKHBpcGUpOwo+IGRpZmYgLS1n aXQgYS9kcml2ZXJzL21lZGlhL3BsYXRmb3JtL3ZzcDEvdnNwMV9waXBlLmgKPiBiL2RyaXZlcnMv bWVkaWEvcGxhdGZvcm0vdnNwMS92c3AxX3BpcGUuaCBpbmRleCBhYzRhZDI2NTU1NTEuLjY1Y2M4 ZmI3NjY2Mgo+IDEwMDY0NAo+IC0tLSBhL2RyaXZlcnMvbWVkaWEvcGxhdGZvcm0vdnNwMS92c3Ax X3BpcGUuaAo+ICsrKyBiL2RyaXZlcnMvbWVkaWEvcGxhdGZvcm0vdnNwMS92c3AxX3BpcGUuaAo+ IEBAIC03Nyw2ICs3Nyw3IEBAIGVudW0gdnNwMV9waXBlbGluZV9zdGF0ZSB7Cj4gICAqIEB1ZHNf aW5wdXQ6IGVudGl0eSBhdCB0aGUgaW5wdXQgb2YgdGhlIFVEUywgaWYgdGhlIFVEUyBpcyBwcmVz ZW50Cj4gICAqIEBlbnRpdGllczogbGlzdCBvZiBlbnRpdGllcyBpbiB0aGUgcGlwZWxpbmUKPiAg ICogQGRsOiBkaXNwbGF5IGxpc3QgYXNzb2NpYXRlZCB3aXRoIHRoZSBwaXBlbGluZQo+ICsgKiBA ZGxfcG9zdHBvbmVkOiBpZGVudGlmaWVzIGlmIHRoZSBkbCBjb21taXQgd2FzIGNhdWdodCBieSBh IHJhY2UKPiBjb25kaXRpb24gKiBAZGl2X3NpemU6IFRoZSBtYXhpbXVtIGFsbG93ZWQgcGFydGl0 aW9uIHNpemUgZm9yIHRoZSBwaXBlbGluZQo+ICogQHBhcnRpdGlvbnM6IFRoZSBudW1iZXIgb2Yg cGFydGl0aW9ucyB1c2VkIHRvIHByb2Nlc3Mgb25lIGZyYW1lICoKPiBAY3VycmVudF9wYXJ0aXRp b246IFRoZSBwYXJ0aXRpb24gbnVtYmVyIGN1cnJlbnRseSBiZWluZyBjb25maWd1cmVkIEBACj4g LTEwNyw2ICsxMDgsNyBAQCBzdHJ1Y3QgdnNwMV9waXBlbGluZSB7Cj4gIAlzdHJ1Y3QgbGlzdF9o ZWFkIGVudGl0aWVzOwo+IAo+ICAJc3RydWN0IHZzcDFfZGxfbGlzdCAqZGw7Cj4gKwlib29sIGRs X3Bvc3Rwb25lZDsKPiAKPiAgCXVuc2lnbmVkIGludCBkaXZfc2l6ZTsKPiAgCXVuc2lnbmVkIGlu dCBwYXJ0aXRpb25zOwoKLS0gClJlZ2FyZHMsCgpMYXVyZW50IFBpbmNoYXJ0CgpfX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpkcmktZGV2ZWwgbWFpbGluZyBs aXN0CmRyaS1kZXZlbEBsaXN0cy5mcmVlZGVza3RvcC5vcmcKaHR0cHM6Ly9saXN0cy5mcmVlZGVz a3RvcC5vcmcvbWFpbG1hbi9saXN0aW5mby9kcmktZGV2ZWwK