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Mon, 5 Dec 2022 14:10:43 +0000 (GMT) X-AuditID: cbfec7f5-f5dff7000000254d-d4-638dfbe322f1 Received: from eusmtip2.samsung.com ( [203.254.199.222]) by eusmgms2.samsung.com (EUCPMTA) with SMTP id A6.E5.09026.2EBFD836; Mon, 5 Dec 2022 14:10:43 +0000 (GMT) Received: from [106.210.134.192] (unknown [106.210.134.192]) by eusmtip2.samsung.com (KnoxPortal) with ESMTPA id 20221205141042eusmtip2a56af7237c75db6751c32fdb5c37033d~t6wTEEwSq2339423394eusmtip2N; Mon, 5 Dec 2022 14:10:42 +0000 (GMT) Message-ID: Date: Mon, 5 Dec 2022 15:10:42 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101 Thunderbird/102.5.1 Subject: Re: [v2,5/6] drm/fb-helper: Schedule deferred-I/O worker after writing to framebuffer Content-Language: en-US From: Marek Szyprowski To: Thomas Zimmermann , daniel@ffwll.ch, airlied@gmail.com, javierm@redhat.com, mripard@kernel.org, maarten.lankhorst@linux.intel.com In-Reply-To: <81399603-6253-b671-85c7-373f196b73ed@samsung.com> Content-Transfer-Encoding: 8bit X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFtrFKsWRmVeSWpSXmKPExsWy7djP87qPf/cmG6x8r2px4voiJouFD+8y W/zfNpHZ4srX92wWC6ctZ7RYMJvbYuLtDewWCz9uZbFo61zGarHlzURWBy6Pvd8WsHjsnHWX 3WPTqk42j3knAz3udx9n8ti8pN7j/b6rbB6bT1cHcERx2aSk5mSWpRbp2yVwZezoXMBUcE+w Yv71BuYGxgt8XYycHBICJhJzFyxi72Lk4hASWMEosWP1LiYI5wujROuZTawQzmdGiYOdm5hg Wmbf2ABVtZxR4viPfVBVHxklZmzbzQZSxStgJ7H6QxsLiM0ioCLRfH8PVFxQ4uTMJ2BxUYEU iQM7z4JNFRZIkPg28RMjiM0sIC5x68l8sDibgKFE19susF4RgXmMEot/JIAsYxZYzSixcsM7 oAQHB6eAvcSPh/YQvfISzVtnM4PUSAi0c0pc7O6EOttF4k1HHzuELSzx6vgWKFtG4v/O+UxQ DYwSC37fh3ImMEo0PL/FCFFlLXHn3C+wbcwCmhLrd+lDhB0lFuzqZgcJSwjwSdx4KwhxBJ/E pG3TmSHCvBIdbUIQ1WoSs46vg1t78MIl5gmMSrOQgmUWkvdnIXlnFsLeBYwsqxjFU0uLc9NT i43zUsv1ihNzi0vz0vWS83M3MQKT1+l/x7/uYFzx6qPeIUYmDsZDjBIczEoivC829iYL8aYk VlalFuXHF5XmpBYfYpTmYFES510xpSNZSCA9sSQ1OzW1ILUIJsvEwSnVwNQ5e1vM+sulGuee XO2dpbpNX3v7OaUC/XexJ7akbZ53dd9L7YsKjiYzzqa/nPVb6Mmi6i16+Q72rc7y/TNbGqpL 35dkcRT2+P65M/HMYyvuE677WVPW6/qeiVeabfpt6of5XdGftadNclbeZMEx50bh/cwsxZ82 PqLTpm6ODVKRdst7ttjyvt/TMtU0ric6i9/75bUqbeK7J2IZ5Znrf3p9mJdz1R335oNfExZ8 bJ94ytmoRa7MtLyPJdjxzVVt/wOfTM+UJl2zXSo8q+YUo7ucjyy/sNy9iUsy5IRe2nPteXx5 43tZ5g2XNfp9pI+W9uZusbv36HVQ1yf70uhnhsHRjvNuq0xdFFzjn/48TomlOCPRUIu5qDgR AC9wjSPNAwAA X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFjrLIsWRmVeSWpSXmKPExsVy+t/xe7qPf/cmGzSvZLY4cX0Rk8XCh3eZ Lf5vm8hsceXrezaLhdOWM1osmM1tMfH2BnaLhR+3sli0dS5jtdjyZiKrA5fH3m8LWDx2zrrL 7rFpVSebx7yTgR73u48zeWxeUu/xft9VNo/Np6sDOKL0bIryS0tSFTLyi0tslaINLYz0DC0t 9IxMLPUMjc1jrYxMlfTtbFJSczLLUov07RL0MnZ0LmAquCdYMf96A3MD4wW+LkZODgkBE4nZ NzYwdTFycQgJLGWU+Px0FytEQkbi5LQGKFtY4s+1LjaIoveMEs8ntzGCJHgF7CRWf2hjAbFZ BFQkmu/vYYOIC0qcnPkELC4qkCLR3vOPCcQWFkiQ+DbxE1gvs4C4xK0n88HibAKGEl1vIRaI CMxjlLhy/AIjiMMssJpR4s//XkaI1cuZJGYfOQLUwsHBKWAv8eOhPcQkM4murV1QU+UlmrfO Zp7AKDQLySGzkCychaRlFpKWBYwsqxhFUkuLc9Nzi430ihNzi0vz0vWS83M3MQLjdduxn1t2 MK589VHvECMTB+MhRgkOZiUR3hcbe5OFeFMSK6tSi/Lji0pzUosPMZoCQ2Mis5Rocj4wYeSV xBuaGZgamphZGphamhkrifN6FnQkCgmkJ5akZqemFqQWwfQxcXBKNTB1tBsVvHY8tOcSj9Wv I7mKjNlGU+Rs5lybZ3zGtOPOW78vj20qcooVl3SLtr2+fsm+xOXIhlQB/+3KylnGX3d/zv1s XdAgKHQ0sJS/PPxPe1+nXebf5y5LLVjEGBQK/s3cvuyuQPwRmalPdl4wqbc6zWlsErRf8kvC myubOP9EOAvs/ZhV1M+4eofHIvG6dfKZnn/fWc64mxlbfvZw9a85l85c2HJ58wS+4OC1mi9u VV3lfaX4SI7rYrK9T42k8xHtdwzHPtrJbpiuV9ek/NydNzTdpqug8ufD9QwvK6cKK1/tPzmp o//Zr5fWmlt31afKhqn0Om/3Mvb4r358SUHFzrflm7cvaD2nslzHwlyJpTgj0VCLuag4EQDV iL3lYAMAAA== X-CMS-MailID: 20221205141043eucas1p104a1e77304da5b5b8b287c10d9d00daa X-Msg-Generator: CA Content-Type: text/plain; charset="utf-8" X-RootMTR: 20221117125800eucas1p29bc0adbe623ca0c42e903e771bf68b33 X-EPHeader: CA CMS-TYPE: 201P X-CMS-RootMailID: 20221117125800eucas1p29bc0adbe623ca0c42e903e771bf68b33 References: <20221115115819.23088-6-tzimmermann@suse.de> <1424be58-3f19-7ed4-e3c9-5517c05032f2@suse.de> <81399603-6253-b671-85c7-373f196b73ed@samsung.com> 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: Daniel Vetter , linux-rpi-kernel , dri-devel@lists.freedesktop.org, linux-amlogic@lists.infradead.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" On 17.11.2022 18:21, Marek Szyprowski wrote: > On 17.11.2022 17:07, Thomas Zimmermann wrote: >> Am 17.11.22 um 13:57 schrieb Marek Szyprowski: >>> On 15.11.2022 12:58, Thomas Zimmermann wrote: >>>> Schedule the deferred-I/O worker instead of the damage worker after >>>> writing to the fbdev framebuffer. The deferred-I/O worker then >>>> performs >>>> the dirty-fb update. The fbdev emulation will initialize deferred I/O >>>> for all drivers that require damage updates. It is therefore a valid >>>> assumption that the deferred-I/O worker is present. >>>> >>>> It would be possible to perform the damage handling directly from >>>> within >>>> the write operation. But doing this could increase the overhead of the >>>> write or interfere with a concurrently scheduled deferred-I/O worker. >>>> Instead, scheduling the deferred-I/O worker with its regular delay of >>>> 50 ms removes load off the write operation and allows the deferred-I/O >>>> worker to handle multiple write operations that arrived during the >>>> delay >>>> time window. >>>> >>>> v2: >>>>     * keep drm_fb_helper_damage() (Daniel) >>>>     * use fb_deferred_io_schedule_flush() (Daniel) >>>>     * clarify comments (Daniel) >>>> >>>> Signed-off-by: Thomas Zimmermann >>>> Reviewed-by: Daniel Vetter >>> >>> This patch, merged into today's linux-next as commit 7f5cc4a3e5e4 >>> ("drm/fb-helper: Schedule deferred-I/O worker after writing to >>> framebuffer"), triggers a following warning on Raspberry Pi 3 & 4 as >>> well as all Amlogic Meson G12A/B based boards: >>> >>> ------------[ cut here ]------------ >>> WARNING: CPU: 0 PID: 220 at drivers/video/fbdev/core/fb_defio.c:340 >> >> Thank you so much for reporting. That line should never be executed >> with vc4 et al. >> >> If you have the time, could you please try the attached patch and >> report the results. Thanks a lot. > > This fixes the issue observed on my Raspberry Pi 3/4 and Amlogic Meson > based boards. Feel free to add: > > Tested-by: Marek Szyprowski Gentle ping. This issue is not fixed in linux-next. 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Mon, 5 Dec 2022 14:10:42 +0000 (GMT) Message-ID: Date: Mon, 5 Dec 2022 15:10:42 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101 Thunderbird/102.5.1 Subject: Re: [v2,5/6] drm/fb-helper: Schedule deferred-I/O worker after writing to framebuffer Content-Language: en-US From: Marek Szyprowski To: Thomas Zimmermann , daniel@ffwll.ch, airlied@gmail.com, javierm@redhat.com, mripard@kernel.org, maarten.lankhorst@linux.intel.com Cc: Daniel Vetter , linux-rpi-kernel , dri-devel@lists.freedesktop.org, linux-amlogic@lists.infradead.org In-Reply-To: <81399603-6253-b671-85c7-373f196b73ed@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFtrFKsWRmVeSWpSXmKPExsWy7djP87qPf/cmG6x8r2px4voiJouFD+8y W/zfNpHZ4srX92wWC6ctZ7RYMJvbYuLtDewWCz9uZbFo61zGarHlzURWBy6Pvd8WsHjsnHWX 3WPTqk42j3knAz3udx9n8ti8pN7j/b6rbB6bT1cHcERx2aSk5mSWpRbp2yVwZezoXMBUcE+w Yv71BuYGxgt8XYycHBICJhJzFyxi72Lk4hASWMEosWP1LiYI5wujROuZTawQzmdGiYOdm5hg Wmbf2ABVtZxR4viPfVBVHxklZmzbzQZSxStgJ7H6QxsLiM0ioCLRfH8PVFxQ4uTMJ2BxUYEU iQM7z4JNFRZIkPg28RMjiM0sIC5x68l8sDibgKFE19susF4RgXmMEot/JIAsYxZYzSixcsM7 oAQHB6eAvcSPh/YQvfISzVtnM4PUSAi0c0pc7O6EOttF4k1HHzuELSzx6vgWKFtG4v/O+UxQ DYwSC37fh3ImMEo0PL/FCFFlLXHn3C+wbcwCmhLrd+lDhB0lFuzqZgcJSwjwSdx4KwhxBJ/E pG3TmSHCvBIdbUIQ1WoSs46vg1t78MIl5gmMSrOQgmUWkvdnIXlnFsLeBYwsqxjFU0uLc9NT i43zUsv1ihNzi0vz0vWS83M3MQKT1+l/x7/uYFzx6qPeIUYmDsZDjBIczEoivC829iYL8aYk VlalFuXHF5XmpBYfYpTmYFES510xpSNZSCA9sSQ1OzW1ILUIJsvEwSnVwNQ5e1vM+sulGuee XO2dpbpNX3v7OaUC/XexJ7akbZ53dd9L7YsKjiYzzqa/nPVb6Mmi6i16+Q72rc7y/TNbGqpL 35dkcRT2+P65M/HMYyvuE677WVPW6/qeiVeabfpt6of5XdGftadNclbeZMEx50bh/cwsxZ82 PqLTpm6ODVKRdst7ttjyvt/TMtU0ric6i9/75bUqbeK7J2IZ5Znrf3p9mJdz1R335oNfExZ8 bJ94ytmoRa7MtLyPJdjxzVVt/wOfTM+UJl2zXSo8q+YUo7ucjyy/sNy9iUsy5IRe2nPteXx5 43tZ5g2XNfp9pI+W9uZusbv36HVQ1yf70uhnhsHRjvNuq0xdFFzjn/48TomlOCPRUIu5qDgR AC9wjSPNAwAA X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFjrLIsWRmVeSWpSXmKPExsVy+t/xe7qPf/cmGzSvZLY4cX0Rk8XCh3eZ Lf5vm8hsceXrezaLhdOWM1osmM1tMfH2BnaLhR+3sli0dS5jtdjyZiKrA5fH3m8LWDx2zrrL 7rFpVSebx7yTgR73u48zeWxeUu/xft9VNo/Np6sDOKL0bIryS0tSFTLyi0tslaINLYz0DC0t 9IxMLPUMjc1jrYxMlfTtbFJSczLLUov07RL0MnZ0LmAquCdYMf96A3MD4wW+LkZODgkBE4nZ NzYwdTFycQgJLGWU+Px0FytEQkbi5LQGKFtY4s+1LjaIoveMEs8ntzGCJHgF7CRWf2hjAbFZ BFQkmu/vYYOIC0qcnPkELC4qkCLR3vOPCcQWFkiQ+DbxE1gvs4C4xK0n88HibAKGEl1vIRaI CMxjlLhy/AIjiMMssJpR4s//XkaI1cuZJGYfOQLUwsHBKWAv8eOhPcQkM4murV1QU+UlmrfO Zp7AKDQLySGzkCychaRlFpKWBYwsqxhFUkuLc9Nzi430ihNzi0vz0vWS83M3MQLjdduxn1t2 MK589VHvECMTB+MhRgkOZiUR3hcbe5OFeFMSK6tSi/Lji0pzUosPMZoCQ2Mis5Rocj4wYeSV xBuaGZgamphZGphamhkrifN6FnQkCgmkJ5akZqemFqQWwfQxcXBKNTB1tBsVvHY8tOcSj9Wv I7mKjNlGU+Rs5lybZ3zGtOPOW78vj20qcooVl3SLtr2+fsm+xOXIhlQB/+3KylnGX3d/zv1s XdAgKHQ0sJS/PPxPe1+nXebf5y5LLVjEGBQK/s3cvuyuQPwRmalPdl4wqbc6zWlsErRf8kvC myubOP9EOAvs/ZhV1M+4eofHIvG6dfKZnn/fWc64mxlbfvZw9a85l85c2HJ58wS+4OC1mi9u VV3lfaX4SI7rYrK9T42k8xHtdwzHPtrJbpiuV9ek/NydNzTdpqug8ufD9QwvK6cKK1/tPzmp o//Zr5fWmlt31afKhqn0Om/3Mvb4r358SUHFzrflm7cvaD2nslzHwlyJpTgj0VCLuag4EQDV iL3lYAMAAA== X-CMS-MailID: 20221205141043eucas1p104a1e77304da5b5b8b287c10d9d00daa X-Msg-Generator: CA X-RootMTR: 20221117125800eucas1p29bc0adbe623ca0c42e903e771bf68b33 X-EPHeader: CA CMS-TYPE: 201P X-CMS-RootMailID: 20221117125800eucas1p29bc0adbe623ca0c42e903e771bf68b33 References: <20221115115819.23088-6-tzimmermann@suse.de> <1424be58-3f19-7ed4-e3c9-5517c05032f2@suse.de> <81399603-6253-b671-85c7-373f196b73ed@samsung.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20221205_061059_485932_13BBA1DD X-CRM114-Status: GOOD ( 12.81 ) X-BeenThere: linux-amlogic@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-amlogic" Errors-To: linux-amlogic-bounces+linux-amlogic=archiver.kernel.org@lists.infradead.org T24gMTcuMTEuMjAyMiAxODoyMSwgTWFyZWsgU3p5cHJvd3NraSB3cm90ZToKPiBPbiAxNy4xMS4y MDIyIDE3OjA3LCBUaG9tYXMgWmltbWVybWFubiB3cm90ZToKPj4gQW0gMTcuMTEuMjIgdW0gMTM6 NTcgc2NocmllYiBNYXJlayBTenlwcm93c2tpOgo+Pj4gT24gMTUuMTEuMjAyMiAxMjo1OCwgVGhv bWFzIFppbW1lcm1hbm4gd3JvdGU6Cj4+Pj4gU2NoZWR1bGUgdGhlIGRlZmVycmVkLUkvTyB3b3Jr ZXIgaW5zdGVhZCBvZiB0aGUgZGFtYWdlIHdvcmtlciBhZnRlcgo+Pj4+IHdyaXRpbmcgdG8gdGhl IGZiZGV2IGZyYW1lYnVmZmVyLiBUaGUgZGVmZXJyZWQtSS9PIHdvcmtlciB0aGVuIAo+Pj4+IHBl cmZvcm1zCj4+Pj4gdGhlIGRpcnR5LWZiIHVwZGF0ZS4gVGhlIGZiZGV2IGVtdWxhdGlvbiB3aWxs IGluaXRpYWxpemUgZGVmZXJyZWQgSS9PCj4+Pj4gZm9yIGFsbCBkcml2ZXJzIHRoYXQgcmVxdWly ZSBkYW1hZ2UgdXBkYXRlcy4gSXQgaXMgdGhlcmVmb3JlIGEgdmFsaWQKPj4+PiBhc3N1bXB0aW9u IHRoYXQgdGhlIGRlZmVycmVkLUkvTyB3b3JrZXIgaXMgcHJlc2VudC4KPj4+Pgo+Pj4+IEl0IHdv dWxkIGJlIHBvc3NpYmxlIHRvIHBlcmZvcm0gdGhlIGRhbWFnZSBoYW5kbGluZyBkaXJlY3RseSBm cm9tIAo+Pj4+IHdpdGhpbgo+Pj4+IHRoZSB3cml0ZSBvcGVyYXRpb24uIEJ1dCBkb2luZyB0aGlz IGNvdWxkIGluY3JlYXNlIHRoZSBvdmVyaGVhZCBvZiB0aGUKPj4+PiB3cml0ZSBvciBpbnRlcmZl cmUgd2l0aCBhIGNvbmN1cnJlbnRseSBzY2hlZHVsZWQgZGVmZXJyZWQtSS9PIHdvcmtlci4KPj4+ PiBJbnN0ZWFkLCBzY2hlZHVsaW5nIHRoZSBkZWZlcnJlZC1JL08gd29ya2VyIHdpdGggaXRzIHJl Z3VsYXIgZGVsYXkgb2YKPj4+PiA1MCBtcyByZW1vdmVzIGxvYWQgb2ZmIHRoZSB3cml0ZSBvcGVy YXRpb24gYW5kIGFsbG93cyB0aGUgZGVmZXJyZWQtSS9PCj4+Pj4gd29ya2VyIHRvIGhhbmRsZSBt dWx0aXBsZSB3cml0ZSBvcGVyYXRpb25zIHRoYXQgYXJyaXZlZCBkdXJpbmcgdGhlIAo+Pj4+IGRl bGF5Cj4+Pj4gdGltZSB3aW5kb3cuCj4+Pj4KPj4+PiB2MjoKPj4+PiDCoMKgwqDCoCoga2VlcCBk cm1fZmJfaGVscGVyX2RhbWFnZSgpIChEYW5pZWwpCj4+Pj4gwqDCoMKgwqAqIHVzZSBmYl9kZWZl cnJlZF9pb19zY2hlZHVsZV9mbHVzaCgpIChEYW5pZWwpCj4+Pj4gwqDCoMKgwqAqIGNsYXJpZnkg Y29tbWVudHMgKERhbmllbCkKPj4+Pgo+Pj4+IFNpZ25lZC1vZmYtYnk6IFRob21hcyBaaW1tZXJt YW5uIDx0emltbWVybWFubkBzdXNlLmRlPgo+Pj4+IFJldmlld2VkLWJ5OiBEYW5pZWwgVmV0dGVy IDxkYW5pZWwudmV0dGVyQGZmd2xsLmNoPgo+Pj4KPj4+IFRoaXMgcGF0Y2gsIG1lcmdlZCBpbnRv IHRvZGF5J3MgbGludXgtbmV4dCBhcyBjb21taXQgN2Y1Y2M0YTNlNWU0Cj4+PiAoImRybS9mYi1o ZWxwZXI6IFNjaGVkdWxlIGRlZmVycmVkLUkvTyB3b3JrZXIgYWZ0ZXIgd3JpdGluZyB0bwo+Pj4g ZnJhbWVidWZmZXIiKSwgdHJpZ2dlcnMgYSBmb2xsb3dpbmcgd2FybmluZyBvbiBSYXNwYmVycnkg UGkgMyAmIDQgYXMKPj4+IHdlbGwgYXMgYWxsIEFtbG9naWMgTWVzb24gRzEyQS9CIGJhc2VkIGJv YXJkczoKPj4+Cj4+PiAtLS0tLS0tLS0tLS1bIGN1dCBoZXJlIF0tLS0tLS0tLS0tLS0KPj4+IFdB Uk5JTkc6IENQVTogMCBQSUQ6IDIyMCBhdCBkcml2ZXJzL3ZpZGVvL2ZiZGV2L2NvcmUvZmJfZGVm aW8uYzozNDAKPj4KPj4gVGhhbmsgeW91IHNvIG11Y2ggZm9yIHJlcG9ydGluZy4gVGhhdCBsaW5l IHNob3VsZCBuZXZlciBiZSBleGVjdXRlZCAKPj4gd2l0aCB2YzQgZXQgYWwuCj4+Cj4+IElmIHlv dSBoYXZlIHRoZSB0aW1lLCBjb3VsZCB5b3UgcGxlYXNlIHRyeSB0aGUgYXR0YWNoZWQgcGF0Y2gg YW5kIAo+PiByZXBvcnQgdGhlIHJlc3VsdHMuIFRoYW5rcyBhIGxvdC4KPgo+IFRoaXMgZml4ZXMg dGhlIGlzc3VlIG9ic2VydmVkIG9uIG15IFJhc3BiZXJyeSBQaSAzLzQgYW5kIEFtbG9naWMgTWVz b24gCj4gYmFzZWQgYm9hcmRzLiBGZWVsIGZyZWUgdG8gYWRkOgo+Cj4gVGVzdGVkLWJ5OiBNYXJl ayBTenlwcm93c2tpIDxtLnN6eXByb3dza2lAc2Ftc3VuZy5jb20+CgpHZW50bGUgcGluZy4gVGhp cyBpc3N1ZSBpcyBub3QgZml4ZWQgaW4gbGludXgtbmV4dC4KCkJlc3QgcmVnYXJkcwotLSAKTWFy ZWsgU3p5cHJvd3NraSwgUGhEClNhbXN1bmcgUiZEIEluc3RpdHV0ZSBQb2xhbmQKCgpfX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpsaW51eC1hbWxvZ2ljIG1h aWxpbmcgbGlzdApsaW51eC1hbWxvZ2ljQGxpc3RzLmluZnJhZGVhZC5vcmcKaHR0cDovL2xpc3Rz LmluZnJhZGVhZC5vcmcvbWFpbG1hbi9saXN0aW5mby9saW51eC1hbWxvZ2ljCg==