From 2965e6355dcdf157b5fafa25a2715f00064da8bf Mon Sep 17 00:00:00 2001 From: Mario Limonciello Date: Wed, 27 Nov 2024 21:26:56 -0600 Subject: drm/amd: Add Suspend/Hibernate notification callback support As part of the suspend sequence VRAM needs to be evicted on dGPUs. In order to make suspend/resume more reliable we moved this into the pmops prepare() callback so that the suspend sequence would fail but the system could remain operational under high memory usage suspend. Another class of issues exist though where due to memory fragementation there isn't a large enough contiguous space and swap isn't accessible. Add support for a suspend/hibernate notification callback that could evict VRAM before tasks are frozen. This should allow paging out to swap if necessary. Link: https://github.com/ROCm/ROCK-Kernel-Driver/issues/174 Link: https://gitlab.freedesktop.org/drm/amd/-/issues/3476 Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/2362 Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/3781 Reviewed-by: Lijo Lazar Link: https://lore.kernel.org/r/20241128032656.2090059-2-superm1@kernel.org Signed-off-by: Mario Limonciello Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu.h | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu.h') diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h index 4653a8d2823a..9f5351c013ff 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h @@ -880,6 +880,7 @@ struct amdgpu_device { bool need_swiotlb; bool accel_working; struct notifier_block acpi_nb; + struct notifier_block pm_nb; struct amdgpu_i2c_chan *i2c_bus[AMDGPU_MAX_I2C_BUS]; struct debugfs_blob_wrapper debugfs_vbios_blob; struct debugfs_blob_wrapper debugfs_discovery_blob; -- cgit v1.2.3 From 11815bb0e30966321ff4351b55ad7b6f2e0a63bf Mon Sep 17 00:00:00 2001 From: Christian König Date: Thu, 12 Dec 2024 16:51:04 +0100 Subject: drm/amdgpu: partially revert "reduce reset time" MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This partially reverts commit 194eb174cbe4fe2b3376ac30acca2dc8c8beca00. This commit introduced a new state variable into adev without even remotely worrying about CPU barriers. Since we already have the amdgpu_in_reset() function exactly for this use case partially revert that. Signed-off-by: Christian König Reviewed-by: Alex Deucher Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu.h | 1 - drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c | 2 +- drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c | 4 ++-- drivers/gpu/drm/amd/amdgpu/amdgpu_job.c | 3 --- drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c | 2 +- 5 files changed, 4 insertions(+), 8 deletions(-) (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu.h') diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h index 9f5351c013ff..69895fccb474 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h @@ -1175,7 +1175,6 @@ struct amdgpu_device { struct work_struct reset_work; - bool job_hang; bool dc_enabled; /* Mask of active clusters */ uint32_t aid_mask; diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c index de30143ea51b..2e5732dfd425 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c @@ -836,7 +836,7 @@ int amdgpu_amdkfd_unmap_hiq(struct amdgpu_device *adev, u32 doorbell_off, if (!kiq->pmf || !kiq->pmf->kiq_unmap_queues) return -EINVAL; - if (!kiq_ring->sched.ready || adev->job_hang) + if (!kiq_ring->sched.ready || amdgpu_in_reset(adev)) return 0; ring_funcs = kzalloc(sizeof(*ring_funcs), GFP_KERNEL); diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c index 4a4e40dd25d6..6d5d81f0dc4e 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c @@ -515,7 +515,7 @@ int amdgpu_gfx_disable_kcq(struct amdgpu_device *adev, int xcc_id) if (!kiq->pmf || !kiq->pmf->kiq_unmap_queues) return -EINVAL; - if (!kiq_ring->sched.ready || adev->job_hang || amdgpu_in_reset(adev)) + if (!kiq_ring->sched.ready || amdgpu_in_reset(adev)) return 0; spin_lock(&kiq->ring_lock); @@ -567,7 +567,7 @@ int amdgpu_gfx_disable_kgq(struct amdgpu_device *adev, int xcc_id) if (!kiq->pmf || !kiq->pmf->kiq_unmap_queues) return -EINVAL; - if (!adev->gfx.kiq[0].ring.sched.ready || adev->job_hang) + if (!adev->gfx.kiq[0].ring.sched.ready || amdgpu_in_reset(adev)) return 0; if (amdgpu_gfx_is_master_xcc(adev, xcc_id)) { diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c index 04691753cabf..100f04475943 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c @@ -102,8 +102,6 @@ static enum drm_gpu_sched_stat amdgpu_job_timedout(struct drm_sched_job *s_job) return DRM_GPU_SCHED_STAT_ENODEV; } - adev->job_hang = true; - /* * Do the coredump immediately after a job timeout to get a very * close dump/snapshot/representation of GPU's current error status @@ -181,7 +179,6 @@ static enum drm_gpu_sched_stat amdgpu_job_timedout(struct drm_sched_job *s_job) } exit: - adev->job_hang = false; drm_dev_exit(idx); return DRM_GPU_SCHED_STAT_NOMINAL; } diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c index 9484f3b5a9b7..003522c2d902 100644 --- a/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c @@ -5957,7 +5957,7 @@ static int gfx_v10_0_cp_gfx_enable(struct amdgpu_device *adev, bool enable) else WREG32_SOC15(GC, 0, mmCP_ME_CNTL, tmp); - if (adev->job_hang && !enable) + if (amdgpu_in_reset(adev) && !enable) return 0; for (i = 0; i < adev->usec_timeout; i++) { -- cgit v1.2.3