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| author |   Oded Gabbay <oded.gabbay@amd.com> | 2015-01-15 12:01:10 +0200 |
|---|---|---|
| committer | Oded Gabbay <oded.gabbay@amd.com> | 2015-01-15 12:01:10 +0200 |
| commit | 99331a51cc788cb60780278cf2d6b1105cf23828 (patch) | |
| tree | 5ba5849387e83a4cd4af85b5a5d71dffd9b2607d /drivers/gpu/drm/amd | |
| parent | drm/amdkfd: Fix for-loop when allocating HQD (non-HWS) (diff) | |
| download | linux-dev-99331a51cc788cb60780278cf2d6b1105cf23828.tar.xz linux-dev-99331a51cc788cb60780278cf2d6b1105cf23828.zip | |
drm/amdkfd: Replace cpu_relax() with schedule() in DQM
In order not to occupy the current core and thus prevent the core from
servicing IOMMU PPR requests, this patch replaces the call in DQM to
cpu_relax() with a call to schedule().
Signed-off-by: Oded Gabbay <oded.gabbay@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd')
| -rw-r--r-- | drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c index fad6877d33ad..e804e871ff82 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c @@ -26,6 +26,7 @@ #include <linux/types.h> #include <linux/printk.h> #include <linux/bitops.h> +#include <linux/sched.h> #include "kfd_priv.h" #include "kfd_device_queue_manager.h" #include "kfd_mqd_manager.h" @@ -829,7 +830,7 @@ static int fence_wait_timeout(unsigned int *fence_addr, pr_err("kfd: qcm fence wait loop timeout expired\n"); return -ETIME; } - cpu_relax(); + schedule(); } return 0; |