From mboxrd@z Thu Jan  1 00:00:00 1970
From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Subject: Re: [PATCH] drm/atomic: protect crtc|connector->state
	with rcu
Date: Mon, 20 Mar 2017 11:01:59 +0100
Message-ID: <47b55331-af2d-bac4-29ff-295343d08181@linux.intel.com>
References: <20170316155235.19971-1-daniel.vetter@ffwll.ch>
 <332882ea-3bd1-d417-c355-52a733a6ef77@linux.intel.com>
 <CAKMK7uFsP49YaoW5XxgGDQXPqTbaQ-dEYBDg76TNf717cKOx+w@mail.gmail.com>
 <013bd055-6906-6304-abbb-576aff64449d@linux.intel.com>
 <20170320081816.mojprhkndhme5ple@phenom.ffwll.local>
 <52f04d7b-c108-1d95-bfac-daa743a7665f@linux.intel.com>
 <20170320085948.3xuf6tei7rqr7myy@phenom.ffwll.local>
Mime-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: base64
Return-path: <intel-gfx-bounces@lists.freedesktop.org>
In-Reply-To: <20170320085948.3xuf6tei7rqr7myy@phenom.ffwll.local>
List-Unsubscribe: <https://lists.freedesktop.org/mailman/options/intel-gfx>,
 <mailto:intel-gfx-request@lists.freedesktop.org?subject=unsubscribe>
List-Archive: <https://lists.freedesktop.org/archives/intel-gfx>
List-Post: <mailto:intel-gfx@lists.freedesktop.org>
List-Help: <mailto:intel-gfx-request@lists.freedesktop.org?subject=help>
List-Subscribe: <https://lists.freedesktop.org/mailman/listinfo/intel-gfx>,
 <mailto:intel-gfx-request@lists.freedesktop.org?subject=subscribe>
Errors-To: intel-gfx-bounces@lists.freedesktop.org
Sender: "Intel-gfx" <intel-gfx-bounces@lists.freedesktop.org>
To: Daniel Vetter <daniel@ffwll.ch>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>, Intel Graphics Development <intel-gfx@lists.freedesktop.org>, DRI Development <dri-devel@lists.freedesktop.org>, Daniel Vetter <daniel.vetter@intel.com>
List-Id: dri-devel@lists.freedesktop.org

T3AgMjAtMDMtMTcgb20gMDk6NTkgc2NocmVlZiBEYW5pZWwgVmV0dGVyOgo+IE9uIE1vbiwgTWFy
IDIwLCAyMDE3IGF0IDA5OjM4OjUyQU0gKzAxMDAsIE1hYXJ0ZW4gTGFua2hvcnN0IHdyb3RlOgo+
PiBPcCAyMC0wMy0xNyBvbSAwOToxOCBzY2hyZWVmIERhbmllbCBWZXR0ZXI6Cj4+PiBPbiBGcmks
IE1hciAxNywgMjAxNyBhdCAwNTo1MjozMlBNICswMTAwLCBNYWFydGVuIExhbmtob3JzdCB3cm90
ZToKPj4+PiBPcCAxNi0wMy0xNyBvbSAyMToxNSBzY2hyZWVmIERhbmllbCBWZXR0ZXI6Cj4+Pj4+
IE9uIFRodSwgTWFyIDE2LCAyMDE3IGF0IDU6MDkgUE0sIE1hYXJ0ZW4gTGFua2hvcnN0Cj4+Pj4+
IDxtYWFydGVuLmxhbmtob3JzdEBsaW51eC5pbnRlbC5jb20+IHdyb3RlOgo+Pj4+Pj4gT3AgMTYt
MDMtMTcgb20gMTY6NTIgc2NocmVlZiBEYW5pZWwgVmV0dGVyOgo+Pj4+Pj4+IFRoZSB2Ymxhbmsg
Y29kZSByZWFsbHkgd2FudHMgdG8gbG9vayBhdCBjcnRjLT5zdGF0ZSB3aXRob3V0IGhhdmluZyB0
bwo+Pj4+Pj4+IHRha2UgYSB3d19tdXRleC4gT25lIG9wdGlvbiBtaWdodCBiZSB0byB0YWtlIG9u
ZSBvZiB0aGUgdmJsYW5rIGxvY2tzCj4+Pj4+Pj4gcmlnaHQgd2hlbiBhc3NpZ25pbmcgY3J0Yy0+
c3RhdGUsIHdoaWNoIHdvdWxkIGVuc3VyZSB0aGF0IHRoZSB2YmxhbmsKPj4+Pj4+PiBjb2RlIGRv
ZXNuJ3QgcmFjZSBhbmQgYWNjZXNzIGZyZWVkIG1lbW9yeS4KPj4+Pj4+IEknbSBub3Qgc3VyZSB0
aGlzIGlzIHRoZSByaWdodCBhcHByb2FjaCBmb3IgdmJsYW5rLgo+Pj4+PiBJdCdzIG5vdCwgaXQn
cyBqdXN0IHRoYXQgSSd2ZSBoYWQgdG8gcmVzdXJyZWN0IHRoaXMgcGF0Y2ggcXVpY2tseQo+Pj4+
PiBiZWZvcmUgbGVhdmluZyBhbmQgYWNjaWRlbnRhbGx5IGxlZnQgdGhlIHZibGFuayBzdHVmZiBp
bi4KPj4+Pj4KPj4+Pj4+IGNydGMtPnN0YXRlIG1pZ2h0IG5vdCBiZSB0aGUgc2FtZSBhcyB0aGUg
Y3VycmVudCBzdGF0ZSBpbiBjYXNlIG9mIGEgbm9uYmxvY2tpbmcKPj4+Pj4+IG1vZGVzZXQgdGhh
dCBoYXNuJ3QgZXZlbiBkaXNhYmxlZCB0aGUgb2xkIGNydGMgeWV0Lgo+Pj4+Pj4+IEJ1dCB1c2Vy
c3BhY2UgdGVuZHMgdG8gcG9rZSB0aGUgdmJsYW5rX2lvY3RsIHRvIHF1ZXJ5IHRoZSBjdXJyZW50
Cj4+Pj4+Pj4gdmJsYW5rIHRpbWVzdGFtcCByYXRoZXIgb2Z0ZW4sIGFuZCBnb2luZyBhbGwgaW4g
d2l0aCByY3Ugd291bGQgaGVscCBhCj4+Pj4+Pj4gYml0LiBXZSdyZSBub3QgdGhlcmUgeWV0LCBi
dXQgYWxzbyBkb2Vzbid0IHJlYWxseSBodXJ0Lgo+Pj4+Pj4+Cj4+Pj4+Pj4gdjI6IE1hYXJ0ZW4g
bmVlZHMgdGhpcyB0byBtYWtlIGNvbm5lY3RvciBwcm9wZXJ0aWVzIGF0b21pYywgc28gaGUgY2Fu
Cj4+Pj4+Pj4gcGVlayBhdCBzdGF0ZSBmcm9tIHRoZSB2YXJpb3VzIC0+bW9kZV92YWxpZCBob29r
cy4KPj4+Pj4+Pgo+Pj4+Pj4+IENjOiBNYWFydGVuIExhbmtob3JzdCA8bWFhcnRlbi5sYW5raG9y
c3RAbGludXguaW50ZWwuY29tPgo+Pj4+Pj4+IFNpZ25lZC1vZmYtYnk6IERhbmllbCBWZXR0ZXIg
PGRhbmllbC52ZXR0ZXJAaW50ZWwuY29tPgo+Pj4+Pj4+IC0tLQo+Pj4+Pj4+ICBkcml2ZXJzL2dw
dS9kcm0vZHJtX2F0b21pYy5jICAgICAgICB8IDI2ICsrKysrKysrKysrKysrKysrLS0tLS0tLS0t
Cj4+Pj4+Pj4gIGRyaXZlcnMvZ3B1L2RybS9kcm1fYXRvbWljX2hlbHBlci5jIHwgIDIgKy0KPj4+
Pj4+PiAgaW5jbHVkZS9kcm0vZHJtX2F0b21pYy5oICAgICAgICAgICAgfCAgNSArKysrKwo+Pj4+
Pj4+ICBpbmNsdWRlL2RybS9kcm1fY29ubmVjdG9yLmggICAgICAgICB8IDEzICsrKysrKysrKysr
Ky0KPj4+Pj4+PiAgaW5jbHVkZS9kcm0vZHJtX2NydGMuaCAgICAgICAgICAgICAgfCAgOSArKysr
KysrKy0KPj4+Pj4+PiAgNSBmaWxlcyBjaGFuZ2VkLCA0MyBpbnNlcnRpb25zKCspLCAxMiBkZWxl
dGlvbnMoLSkKPj4+Pj4+Pgo+Pj4+Pj4+IGRpZmYgLS1naXQgYS9kcml2ZXJzL2dwdS9kcm0vZHJt
X2F0b21pYy5jIGIvZHJpdmVycy9ncHUvZHJtL2RybV9hdG9taWMuYwo+Pj4+Pj4+IGluZGV4IDli
ODkyYWY3ODExYS4uYmExMWUzMWZmOWJhIDEwMDY0NAo+Pj4+Pj4+IC0tLSBhL2RyaXZlcnMvZ3B1
L2RybS9kcm1fYXRvbWljLmMKPj4+Pj4+PiArKysgYi9kcml2ZXJzL2dwdS9kcm0vZHJtX2F0b21p
Yy5jCj4+Pj4+Pj4gQEAgLTIxMywxNiArMjEzLDEwIEBAIHZvaWQgZHJtX2F0b21pY19zdGF0ZV9j
bGVhcihzdHJ1Y3QgZHJtX2F0b21pY19zdGF0ZSAqc3RhdGUpCj4+Pj4+Pj4gIH0KPj4+Pj4+PiAg
RVhQT1JUX1NZTUJPTChkcm1fYXRvbWljX3N0YXRlX2NsZWFyKTsKPj4+Pj4+Pgo+Pj4+Pj4+IC0v
KioKPj4+Pj4+PiAtICogX19kcm1fYXRvbWljX3N0YXRlX2ZyZWUgLSBmcmVlIGFsbCBtZW1vcnkg
Zm9yIGFuIGF0b21pYyBzdGF0ZQo+Pj4+Pj4+IC0gKiBAcmVmOiBUaGlzIGF0b21pYyBzdGF0ZSB0
byBkZWFsbG9jYXRlCj4+Pj4+Pj4gLSAqCj4+Pj4+Pj4gLSAqIFRoaXMgZnJlZXMgYWxsIG1lbW9y
eSBhc3NvY2lhdGVkIHdpdGggYW4gYXRvbWljIHN0YXRlLCBpbmNsdWRpbmcgYWxsIHRoZQo+Pj4+
Pj4+IC0gKiBwZXItb2JqZWN0IHN0YXRlIGZvciBwbGFuZXMsIGNydGNzIGFuZCBjb25uZWN0b3Jz
Lgo+Pj4+Pj4+IC0gKi8KPj4+Pj4+PiAtdm9pZCBfX2RybV9hdG9taWNfc3RhdGVfZnJlZShzdHJ1
Y3Qga3JlZiAqcmVmKQo+Pj4+Pj4+ICt2b2lkIF9fX2RybV9hdG9taWNfc3RhdGVfZnJlZShzdHJ1
Y3QgcmN1X2hlYWQgKnJoZWFkKQo+Pj4+Pj4+ICB7Cj4+Pj4+Pj4gLSAgICAgc3RydWN0IGRybV9h
dG9taWNfc3RhdGUgKnN0YXRlID0gY29udGFpbmVyX29mKHJlZiwgdHlwZW9mKCpzdGF0ZSksIHJl
Zik7Cj4+Pj4+Pj4gKyAgICAgc3RydWN0IGRybV9hdG9taWNfc3RhdGUgKnN0YXRlID0KPj4+Pj4+
PiArICAgICAgICAgICAgIGNvbnRhaW5lcl9vZihyaGVhZCwgdHlwZW9mKCpzdGF0ZSksIHJoZWFk
KTsKPj4+Pj4+PiAgICAgICBzdHJ1Y3QgZHJtX21vZGVfY29uZmlnICpjb25maWcgPSAmc3RhdGUt
PmRldi0+bW9kZV9jb25maWc7Cj4+Pj4+Pj4KPj4+Pj4+PiAgICAgICBkcm1fYXRvbWljX3N0YXRl
X2NsZWFyKHN0YXRlKTsKPj4+Pj4+PiBAQCAtMjM2LDYgKzIzMCwyMCBAQCB2b2lkIF9fZHJtX2F0
b21pY19zdGF0ZV9mcmVlKHN0cnVjdCBrcmVmICpyZWYpCj4+Pj4+Pj4gICAgICAgICAgICAgICBr
ZnJlZShzdGF0ZSk7Cj4+Pj4+Pj4gICAgICAgfQo+Pj4+Pj4+ICB9Cj4+Pj4+PiB3aGF0aXNSQ1Uu
dHh0Ogo+Pj4+Pj4gIlRoaXMgZnVuY3Rpb24gaW52b2tlcyBmdW5jKGhlYWQpIGFmdGVyIGEgZ3Jh
Y2UgcGVyaW9kIGhhcyBlbGFwc2VkLgo+Pj4+Pj4gVGhpcyBpbnZvY2F0aW9uIG1pZ2h0IGhhcHBl
biBmcm9tIGVpdGhlciBzb2Z0aXJxIG9yIHByb2Nlc3MgY29udGV4dCwKPj4+Pj4+IHNvIHRoZSBm
dW5jdGlvbiBpcyBub3QgcGVybWl0dGVkIHRvIGJsb2NrLiIKPj4+Pj4+Cj4+Pj4+PiBMb29raW5n
IGF0Cj4+Pj4+PiBjb21taXQgNmYwZjAyZGM1NmYxODc2MGI0NmRjMWJmNWIzZjczODY4NjlkNDE2
Mgo+Pj4+Pj4gQXV0aG9yOiBDaHJpcyBXaWxzb24gPGNocmlzQGNocmlzLXdpbHNvbi5jby51az4K
Pj4+Pj4+IERhdGU6ICAgTW9uIEphbiAyMyAyMToyOTozOSAyMDE3ICswMDAwCj4+Pj4+Pgo+Pj4+
Pj4gICAgIGRybS9pOTE1OiBNb3ZlIGF0b21pYyBzdGF0ZSBmcmVlIGZyb20gb3V0IG9mIGZlbmNl
IHJlbGVhc2UKPj4+Pj4+Cj4+Pj4+PiBJIHdvdWxkIHNheSB0aGF0IGRybV9hdG9taWNfc3RhdGVf
ZnJlZSB3b3VsZCBkZWZpbml0ZWx5IGJsb2NrLi4KPj4+Pj4+Cj4+Pj4+PiBUaGUgb25seSB0aGlu
ZyB0aGF0IG1ha2VzIHNlbnNlIElNTyBpcyBkb2luZyBrZnJlZV9yY3Ugb24gdGhlIG9iamVjdF9z
dGF0ZXMuCj4+Pj4+PiBCdXQgSSBkb24ndCB0aGluayBSQ1UgaXMgdGhlIGFuc3dlciBoZXJlLCBp
dCB3b24ndCBwcm90ZWN0IHlvdSBhZ2FpbnN0IHVzaW5nCj4+Pj4+PiB0aGUgd3JvbmcgY3J0YyBz
dGF0ZS4KPj4+Pj4+Cj4+Pj4+PiBJIHRoaW5rIEkgd291bGQgdHJ5IHRvIHVzZSB0aGUgY3J0YyB3
d19tdXRleCBpbiB0aGUgdmJsYW5rIGNvZGUgYW5kIHNlcmlhbGl6ZSBpdCB0byBwZW5kaW5nIGNv
bW1pdHMsIGlmIGF0IGFsbCBwb3NzaWJsZS4KPj4+Pj4gT29wcy4gSSBndWVzcyBpdCBzaG91bGQg
aGF2ZSBjb21lIHdpdGggInRvdGFsbHkgdW50ZXN0ZWQiLiBJbiB0aGF0Cj4+Pj4+IGNhc2Ugd2Ug
bmVlZCBhIHdvcmt0ZXIgd2hpY2ggZG9lcyBhIHN5bmNocm9uaXplX3JjdSgpIGJlZm9yZQo+Pj4+
PiByZWxlYXNpbmcuIEkgZG9uJ3QganVzdCB3YW50IHRvIGRvIGEgc2ltcGxlIGtmcmVlX3JjdSgp
IGJlY2F1c2UgYnkKPj4+Pj4gdGhhdCBwb2ludCB3ZSd2ZSAocGFydGlhbGx5KSBkZXN0cm95ZWQg
dGhlIHN0YXRlIGFscmVheWQgKHNvIGl0J3MKPj4+Pj4gYWxyZWFkeSB1bnNhZmUgdG8gYWNjZXNz
LCBhbmQgc3BlY2lhbCBydWVscyBhcmUgdWdseSkuIEFuZCBkb2luZyBpdAo+Pj4+PiBoZXJlIGJl
Zm9yZSB3ZSByZWxlYXNlIGFueXRoaW5nIGluIHRoZSBjb3JlIHdvdWxkIGF2b2lkIHRoZSBuZWVk
IGZvcgo+Pj4+PiBkcml2ZXJzIHRvIGJvdGhlciB3aXRoIGtmcmVlX3JjdSgpLgo+Pj4+Pgo+Pj4+
PiBJJ2xsIHRyeSB0byByZXNwaW4gc29tZXRoaW5nIGxlc3Mgb2J2aW91c2x5IGJ1Z2d5IHRvbW9y
cm93IDotKQo+Pj4+IEl0IHdpbGwgc3RpbGwgYmUgYnVnZ3kgdG9tb3Jyb3csIHNpbmNlIHlvdSBo
YXZlIG5vIHdheSB0byBrbm93IGlmIHRoZSBjdXJyZW50IGhhcmR3YXJlIGNydGNfc3RhdGUgaXMg
YW55dGhpbmcgbGlrZSBjcnRjLT5zdGF0ZS4KPj4+Pgo+Pj4+IDooCj4+PiBNYXliZSBJIHdhc250
JyBjbGVhciwgc28gbGV0IG1lIHJldHJ5Ogo+Pj4KPj4+IC0gdGhpcyBhcHByb2FjaCBkb2Vzbid0
IHdvcmsgZm9yIHZibGFuayBhbmQgY3J0YyBzdGF0ZS4gQWdyZWVkLiBJJ2xsCj4+PiAgIHJlbW92
ZSBhbGwgdGhlIGxlZnRvdmVyIGNvbW1lbnRzIEkndmUgZm9yZ290dGVuIHRvIHJlbW92ZSBpbiBh
IGh1cnJ5Lgo+Pj4KPj4+IC0gdGhlIHBhdGNoIGl0c2VsZiBpcyBicm9rZW4sIHNvIGNhbid0IGJl
IHVzZWQgZm9yIGNvbm5lY3Rvci0+c3RhdGUKPj4+ICAgcGVla2luZyBpbiBtb2RlX3ZhbGlkIGVp
dGhlci4gVGhhdCBvbmUgSSdsbCBmaXguCj4+Pgo+Pj4gRG9lcyB0aGF0IG1ha2Ugc2Vuc2U/Cj4+
PiAtRGFuaWVsCj4+IFllcywgYnV0IEknbSBzdGlsbCBub3QgY29tcGxldGVseSBjb252aW5jZWQg
aXQncyByZXF1aXJlZCBmb3IgY29ubmVjdG9yIHN0YXRlIHRvIHVzZSBSQ1UuIER1cmluZyBkZXRl
Y3QoKQo+PiB3ZSB3b3VsZCB0YWtlIHRoZSBjb25uZWN0aW9uX211dGV4IGFueXdheSwgc28gSSBj
YW4gcHJvYmFibHkgIGRvIHRoYXQgZm9yIG1vZGVfdmFsaWQgYXMgd2VsbC4KPiBXaHkgZG8geW91
IHdhbnQgdG8gdGFrZSB0aGUgY29ubmVjdGlvbl9tdXRleCB0aGVyZT8gSWYgd2UganVzdCBnbyB3
aXRoCj4gdGFraW5nIHRoYXQgZXZlcnl3aGVyZSB3ZSB0b3VjaCBzaGFyZWQgc3RhdGUsIHdlIG1p
Z2h0IGFzIHdlbGwgcHVzaCB0aGF0Cj4gdXAgaW4gdGhlIGNhbGxjaGFpbiAuLi4gV2l0aCB0aGUg
Y29ubmVjdG9yX2l0ZXIgc3R1ZmYgdGhlcmUncyBubyByZWFzb24gYXQKPiBhbGwgYW55bW9yZSB0
byBob2xkIHRoZSBtb2RlX2NvbmZpZy5tdXRleCBmb3IgYW55dGhpbmcgcmVhbGx5IGFyb3VuZAo+
IGNvbm5lY3RvciBwcm9iaW5nLgpMZXRzIGtpbGwgdGhhdCBsb2NrLCB0aGVuLiA6RAo+IFRoZSBv
bmx5IHRoaW5nIHdlIG5lZWQgaXMgdGhhdCB3ZSBwYXNzIHRoZSBhY3F1aXJlX2N0eCBkb3duIGlu
dG8gY2FsbGFycwo+IHNvbWVob3csIHNvIHRoYXQgdGhlIGxvYWQgZGV0ZWN0IHN0dWZmIHN0aWxs
IHdvcmtzLgo+Cj4gQnV0IG15IGlkZWEgd2FzIGtpbmRhIHRoYXQgd2UnZCBkbyB0aGUgc2FtZSBm
b3IgcHJvYmUgLT4gbW9kZXNldCBkYXRhCj4gZmxvd3MgbGlrZSBoZXJlIGZvciB0aGUgb3RoZXIg
d2F5IHJvdW5kOiBKdXN0IGEgYnVuY2ggb2YgUkVBRF9PTkNFIGFuZAo+IG1heWJlIGxvb2t1cCB0
aGUgZWRpZCB3aXRoIHJjdSB0b28uIFRoYXQgd2F5IGl0J3MgY2xlYXIgdG8gYW55Ym9keSB0aGF0
Cj4gcHJvYmUgYW5kIG1vZGVzZXQgYXJlIGVudGlyZWx5IG5vdCBzeW5jaHJvbml6ZWQuCgpUaG91
Z2ggSSB0aGluayBpdCdzIGJlbmVmaWNpYWwgdG8gbG9jayB0aGVtLiBpZiBpdCBpcy4gSSdtIG5v
dCBzdXJlIHRoZXJlCmFyZSBtYW55IHVzZWNhc2VzIGZvciBwYXJhbGxlbCBtb2Rlc2V0IHZzIHBy
b2JlLiBBbmQgaWYgc29tZW9uZSBkb2VzIGNhcmUsCnRoZXkgY2FuIHVzZSBub25ibG9ja2luZyBt
b2Rlc2V0cywgbWF5YmUuCgpMZWdhY3kgdXNlcnNwYWNlIHByb2JhYmx5IGNhbid0IGRvIGJsb2Nr
aW5nIG1vZGVzZXQgYW5kIHByb2JlIGF0IHRoZSBzYW1lCnRpbWUsIHNvIEkgZG9uJ3QgdGhpbmsg
aXQgd2lsbCByZWdyZXNzLgoKfk1hYXJ0ZW4KCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19f
X19fX19fX19fX19fX19fX19fCkludGVsLWdmeCBtYWlsaW5nIGxpc3QKSW50ZWwtZ2Z4QGxpc3Rz
LmZyZWVkZXNrdG9wLm9yZwpodHRwczovL2xpc3RzLmZyZWVkZXNrdG9wLm9yZy9tYWlsbWFuL2xp
c3RpbmZvL2ludGVsLWdmeAo=