diff options
Diffstat (limited to 'meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/2819-drm-amdkfd-Print-a-warning-when-the-runlist-becomes-.patch')
| -rw-r--r-- | meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/2819-drm-amdkfd-Print-a-warning-when-the-runlist-becomes-.patch | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/2819-drm-amdkfd-Print-a-warning-when-the-runlist-becomes-.patch b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/2819-drm-amdkfd-Print-a-warning-when-the-runlist-becomes-.patch new file mode 100644 index 00000000..42ba4896 --- /dev/null +++ b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/2819-drm-amdkfd-Print-a-warning-when-the-runlist-becomes-.patch @@ -0,0 +1,56 @@ +From f2b65e424976a876b4fec4de924eb577ddb1e5c6 Mon Sep 17 00:00:00 2001 +From: Felix Kuehling <Felix.Kuehling@amd.com> +Date: Thu, 20 Jun 2019 15:37:37 -0400 +Subject: [PATCH 2819/2940] drm/amdkfd: Print a warning when the runlist + becomes oversubscribed + +Oversubscription of queues or processes results in poor performance +mostly because HWS blinbly schedules busy and idle queues, resulting +in poor occupancy if many queues are idle. + +Let users know with a warning message when transitioning from a +non-oversubscribed to an oversubscribed runlist. + +Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com> +Reviewed-by: Oak Zeng <Oak.Zeng@amd.com> +--- + drivers/gpu/drm/amd/amdkfd/kfd_packet_manager.c | 6 +++++- + drivers/gpu/drm/amd/amdkfd/kfd_priv.h | 1 + + 2 files changed, 6 insertions(+), 1 deletion(-) + +diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_packet_manager.c b/drivers/gpu/drm/amd/amdkfd/kfd_packet_manager.c +index c72c8f5fd54c..ccf6b2310316 100644 +--- a/drivers/gpu/drm/amd/amdkfd/kfd_packet_manager.c ++++ b/drivers/gpu/drm/amd/amdkfd/kfd_packet_manager.c +@@ -203,11 +203,15 @@ static int pm_create_runlist_ib(struct packet_manager *pm, + + pr_debug("Finished map process and queues to runlist\n"); + +- if (is_over_subscription) ++ if (is_over_subscription) { ++ if (!pm->is_over_subscription) ++ pr_warn("Runlist is getting oversubscribed. Expect reduced ROCm performance.\n"); + retval = pm->pmf->runlist(pm, &rl_buffer[rl_wptr], + *rl_gpu_addr, + alloc_size_bytes / sizeof(uint32_t), + true); ++ } ++ pm->is_over_subscription = is_over_subscription; + + for (i = 0; i < alloc_size_bytes / sizeof(uint32_t); i++) + pr_debug("0x%2X ", rl_buffer[i]); +diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_priv.h b/drivers/gpu/drm/amd/amdkfd/kfd_priv.h +index dc6b3eadc65a..a399914782c4 100644 +--- a/drivers/gpu/drm/amd/amdkfd/kfd_priv.h ++++ b/drivers/gpu/drm/amd/amdkfd/kfd_priv.h +@@ -1056,6 +1056,7 @@ struct packet_manager { + bool allocated; + struct kfd_mem_obj *ib_buffer_obj; + unsigned int ib_size_bytes; ++ bool is_over_subscription; + + const struct packet_manager_funcs *pmf; + }; +-- +2.17.1 + |