<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"> <style type="text/css" style="display:none;"> P {margin-top:0;margin-bottom:0;} </style> </head> <body dir="ltr"> <p style="font-family:Arial;font-size:11pt;color:#0078D7;margin:5pt;" align="Left"> [AMD Official Use Only - Internal Distribution Only]<br> </p> <br> <div> <div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);"> <span style="font-family: "segoe ui", "segoe ui web (west european)", "segoe ui", -apple-system, blinkmacsystemfont, roboto, "helvetica neue", sans-serif; font-size: 12pt; color: rgb(50, 49, 48); background-color: rgba(0, 0, 0, 0);">Hi Das,</span></div> <div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);"> <span style="font-family: "segoe ui", "segoe ui web (west european)", "segoe ui", -apple-system, blinkmacsystemfont, roboto, "helvetica neue", sans-serif; font-size: 12pt; color: rgb(50, 49, 48); background-color: rgba(0, 0, 0, 0);"><br> </span></div> <div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);"> <span style="font-family: "segoe ui", "segoe ui web (west european)", "segoe ui", -apple-system, blinkmacsystemfont, roboto, "helvetica neue", sans-serif; font-size: 12pt; color: rgb(50, 49, 48); background-color: rgba(0, 0, 0, 0);">It seems more reasonable to put spin lock in ring structure, so that KIQ ring can be treated like other normal ring.</span></div> <div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);"> </div> <div><span style="font-family: "segoe ui", "segoe ui web (west european)", "segoe ui", -apple-system, blinkmacsystemfont, roboto, "helvetica neue", sans-serif; font-size: 12pt; color: rgb(50, 49, 48); background-color: rgba(0, 0, 0, 0);">and do we have other paths to call kiq ring except for kernel initialization? it seems the kfd and kgd will use kiq in one thread..</span></div> <div><br> </div> <div><span style="font-family: "segoe ui", "segoe ui web (west european)", "segoe ui", -apple-system, blinkmacsystemfont, roboto, "helvetica neue", sans-serif; font-size: 12pt; color: rgb(50, 49, 48); background-color: rgba(0, 0, 0, 0);">thanks.</span></div> <div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);"> <br> </div> <div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);"> <span style="font-family: "segoe ui", "segoe ui web (west european)", "segoe ui", -apple-system, blinkmacsystemfont, roboto, "helvetica neue", sans-serif; font-size: 12pt; color: rgb(50, 49, 48); background-color: rgba(0, 0, 0, 0);">Best Regards,</span></div> <div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);"> <span style="font-family: "segoe ui", "segoe ui web (west european)", "segoe ui", -apple-system, blinkmacsystemfont, roboto, "helvetica neue", sans-serif; font-size: 12pt; color: rgb(50, 49, 48); background-color: rgba(0, 0, 0, 0);">Kevin</span></div> <hr tabindex="-1" style="display:inline-block; width:98%"> <div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> amd-gfx <amd-gfx-bounces@lists.freedesktop.org> on behalf of Nirmoy Das <nirmoy.das@amd.com><br> <b>Sent:</b> Saturday, March 13, 2021 1:08 AM<br> <b>To:</b> Koenig, Christian <Christian.Koenig@amd.com><br> <b>Cc:</b> Das, Nirmoy <Nirmoy.Das@amd.com>; amd-gfx@lists.freedesktop.org <amd-gfx@lists.freedesktop.org><br> <b>Subject:</b> [PATCH 1/1] drm/amdgpu: wrap kiq ring ops with kiq spinlock</font> <div> </div> </div> <div class="BodyFragment"><font size="2"><span style="font-size:11pt"> <div class="PlainText">KIQ ring is being operated by kfd as well as amdgpu.<br> KFD is using kiq lock, we should the same from amdgpu side<br> as well.<br> <br> Signed-off-by: Nirmoy Das <nirmoy.das@amd.com><br> ---<br> drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c | 15 +++++++++++----<br> 1 file changed, 11 insertions(+), 4 deletions(-)<br> <br> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c<br> index 1915b9b95106..892dc6b269fb 100644<br> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c<br> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c<br> @@ -462,20 +462,25 @@ int amdgpu_gfx_disable_kcq(struct amdgpu_device *adev)<br> {<br> struct amdgpu_kiq *kiq = &adev->gfx.kiq;<br> struct amdgpu_ring *kiq_ring = &kiq->ring;<br> - int i;<br> + int i, r;<br> <br> if (!kiq->pmf || !kiq->pmf->kiq_unmap_queues)<br> return -EINVAL;<br> <br> + spin_lock(&adev->gfx.kiq.ring_lock);<br> if (amdgpu_ring_alloc(kiq_ring, kiq->pmf->unmap_queues_size *<br> - adev->gfx.num_compute_rings))<br> + adev->gfx.num_compute_rings)) {<br> + spin_unlock(&adev->gfx.kiq.ring_lock);<br> return -ENOMEM;<br> + }<br> <br> for (i = 0; i < adev->gfx.num_compute_rings; i++)<br> kiq->pmf->kiq_unmap_queues(kiq_ring, &adev->gfx.compute_ring[i],<br> RESET_QUEUES, 0, 0);<br> + r = amdgpu_ring_test_helper(kiq_ring);<br> + spin_unlock(&adev->gfx.kiq.ring_lock);<br> <br> - return amdgpu_ring_test_helper(kiq_ring);<br> + return r;<br> }<br> <br> int amdgpu_queue_mask_bit_to_set_resource_bit(struct amdgpu_device *adev,<br> @@ -518,12 +523,13 @@ int amdgpu_gfx_enable_kcq(struct amdgpu_device *adev)<br> <br> DRM_INFO("kiq ring mec %d pipe %d q %d\n", kiq_ring->me, kiq_ring->pipe,<br> kiq_ring->queue);<br> -<br> + spin_lock(&adev->gfx.kiq.ring_lock);<br> r = amdgpu_ring_alloc(kiq_ring, kiq->pmf->map_queues_size *<br> adev->gfx.num_compute_rings +<br> kiq->pmf->set_resources_size);<br> if (r) {<br> DRM_ERROR("Failed to lock KIQ (%d).\n", r);<br> + spin_unlock(&adev->gfx.kiq.ring_lock);<br> return r;<br> }<br> <br> @@ -532,6 +538,7 @@ int amdgpu_gfx_enable_kcq(struct amdgpu_device *adev)<br> kiq->pmf->kiq_map_queues(kiq_ring, &adev->gfx.compute_ring[i]);<br> <br> r = amdgpu_ring_test_helper(kiq_ring);<br> + spin_unlock(&adev->gfx.kiq.ring_lock);<br> if (r)<br> DRM_ERROR("KCQ enable failed\n");<br> <br> -- <br> 2.30.1<br> <br> _______________________________________________<br> amd-gfx mailing list<br> amd-gfx@lists.freedesktop.org<br> <a href="https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.freedesktop.org%2Fmailman%2Flistinfo%2Famd-gfx&data=04%7C01%7CKevin1.Wang%40amd.com%7C0a90c6383d634a5226a108d8e5797c08%7C3dd8961fe4884e608e11a82d994e183d%7C0%7C0%7C637511657234189238%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=sfa27Sz8wcIyHJqaE9f8aXQMeUxbyynpAONZHUYoogY%3D&reserved=0">https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.freedesktop.org%2Fmailman%2Flistinfo%2Famd-gfx&data=04%7C01%7CKevin1.Wang%40amd.com%7C0a90c6383d634a5226a108d8e5797c08%7C3dd8961fe4884e608e11a82d994e183d%7C0%7C0%7C637511657234189238%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=sfa27Sz8wcIyHJqaE9f8aXQMeUxbyynpAONZHUYoogY%3D&reserved=0</a><br> </div> </span></font></div> </div> </body> </html>