On Thu, Jul 17, 2014 at 04:29:23PM +0300, Oded Gabbay wrote:
From: Ben Goz ben.goz@amd.com
This patch adds a new parameter to the amdkfd driver. This parameter enables the user to select the scheduling policy of the CP. The choices are:
- CP Scheduling with support for over-subscription
- CP Scheduling without support for over-subscription
- Without CP Scheduling
Is this property per process ? And again 80 chars line please.
Signed-off-by: Ben Goz ben.goz@amd.com Signed-off-by: Oded Gabbay oded.gabbay@amd.com
drivers/gpu/drm/radeon/amdkfd/kfd_module.c | 4 ++++ drivers/gpu/drm/radeon/amdkfd/kfd_priv.h | 9 +++++++++ 2 files changed, 13 insertions(+)
diff --git a/drivers/gpu/drm/radeon/amdkfd/kfd_module.c b/drivers/gpu/drm/radeon/amdkfd/kfd_module.c index dc08f51..fe5e39d 100644 --- a/drivers/gpu/drm/radeon/amdkfd/kfd_module.c +++ b/drivers/gpu/drm/radeon/amdkfd/kfd_module.c @@ -46,6 +46,10 @@ static const struct kgd2kfd_calls kgd2kfd = { .resume = kgd2kfd_resume, };
+int sched_policy = KFD_SCHED_POLICY_HWS_NO_OVERSUBSCRIPTION; +module_param(sched_policy, int, S_IRUSR | S_IWUSR); +MODULE_PARM_DESC(sched_policy, "Kernel cmdline parameter define the kfd scheduling policy");
bool kgd2kfd_init(unsigned interface_version, const struct kfd2kgd_calls *f2g, const struct kgd2kfd_calls **g2f) diff --git a/drivers/gpu/drm/radeon/amdkfd/kfd_priv.h b/drivers/gpu/drm/radeon/amdkfd/kfd_priv.h index 25f23c5..8be07a1 100644 --- a/drivers/gpu/drm/radeon/amdkfd/kfd_priv.h +++ b/drivers/gpu/drm/radeon/amdkfd/kfd_priv.h @@ -64,6 +64,15 @@ /* Macro for allocating structures */ #define kfd_alloc_struct(ptr_to_struct) ((typeof(ptr_to_struct)) kzalloc(sizeof(*ptr_to_struct), GFP_KERNEL))
+/* Kernel module parameter to specify the scheduling policy */ +extern int sched_policy;
+enum kfd_sched_policy {
- KFD_SCHED_POLICY_HWS = 0,
- KFD_SCHED_POLICY_HWS_NO_OVERSUBSCRIPTION,
- KFD_SCHED_POLICY_NO_HWS
+};
/*
- Large enough to hold the maximum usable pasid + 1.
- It must also be able to store the number of doorbells
-- 1.9.1
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