diff options
Diffstat (limited to 'common/recipes-kernel/linux/files/0685-drm-amd-dal-Avoid-flood-kernel-with-storm-of-work-it.patch')
| -rw-r--r-- | common/recipes-kernel/linux/files/0685-drm-amd-dal-Avoid-flood-kernel-with-storm-of-work-it.patch | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/common/recipes-kernel/linux/files/0685-drm-amd-dal-Avoid-flood-kernel-with-storm-of-work-it.patch b/common/recipes-kernel/linux/files/0685-drm-amd-dal-Avoid-flood-kernel-with-storm-of-work-it.patch new file mode 100644 index 00000000..00775cf4 --- /dev/null +++ b/common/recipes-kernel/linux/files/0685-drm-amd-dal-Avoid-flood-kernel-with-storm-of-work-it.patch @@ -0,0 +1,50 @@ +From b3d16ddfc98550586b5c2534532bf4bfc8941a83 Mon Sep 17 00:00:00 2001 +From: Vitaly Prosyak <vitaly.prosyak@amd.com> +Date: Mon, 11 Jan 2016 14:19:10 -0500 +Subject: [PATCH 0685/1110] drm/amd/dal: Avoid flood kernel with storm of work + items + +Add work item to system only when handler is available. +The change decrease the boot time and improve system +performance by not overload the system thread pool with +thousands of empty work items. + +Signed-off-by: Vitaly Prosyak <vitaly.prosyak@amd.com> +Acked-by: Jordan Lazare <Jordan.Lazare@amd.com> +--- + drivers/gpu/drm/amd/dal/amdgpu_dm/amdgpu_dm_irq.c | 14 ++++++++++---- + 1 file changed, 10 insertions(+), 4 deletions(-) + +diff --git a/drivers/gpu/drm/amd/dal/amdgpu_dm/amdgpu_dm_irq.c b/drivers/gpu/drm/amd/dal/amdgpu_dm/amdgpu_dm_irq.c +index ab6df66..7cfb754 100644 +--- a/drivers/gpu/drm/amd/dal/amdgpu_dm/amdgpu_dm_irq.c ++++ b/drivers/gpu/drm/amd/dal/amdgpu_dm/amdgpu_dm_irq.c +@@ -558,15 +558,21 @@ static void amdgpu_dm_irq_schedule_work( + enum dc_irq_source irq_source) + { + unsigned long irq_table_flags; ++ struct work_struct *work = NULL; + + DM_IRQ_TABLE_LOCK(adev, irq_table_flags); + +- /* Since the caller is interested in 'work_struct' then +- * the irq will be post-processed at "INTERRUPT_LOW_IRQ_CONTEXT". */ +- +- schedule_work(&adev->dm.irq_handler_list_low_tab[irq_source].work); ++ if (!list_empty(&adev->dm.irq_handler_list_low_tab[irq_source].head)) ++ work = &adev->dm.irq_handler_list_low_tab[irq_source].work; + + DM_IRQ_TABLE_UNLOCK(adev, irq_table_flags); ++ ++ if (work) { ++ if (!schedule_work(work)) ++ DRM_INFO("amdgpu_dm_irq_schedule_work FAILED src %d\n", ++ irq_source); ++ } ++ + } + + /** amdgpu_dm_irq_immediate_work +-- +2.7.4 + |