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Add software scheduler and domain data structures for a general scheduler and bookkeeping code to create, remove and list them and to keep logs for debugging and development; as a first step, this will only serve as the heart of nvgpu-internal domain scheduler. Long term, this code is intended to work in arbitrary configurations - running on GSP, CPU, or elsewhere, and controlling the GPU or something else. Jira NVGPU-6427 Change-Id: I2a1577fa9120bb8ae6b9552dd2a187cb2cdfe504 Signed-off-by: Alex Waterman <alexw@nvidia.com> Signed-off-by: Konsta Hölttä <kholtta@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2632286 Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com> Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
72 lines
1.9 KiB
C
72 lines
1.9 KiB
C
/*
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* Copyright (c) 2021 NVIDIA Corporation. All rights reserved.
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*
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* NVIDIA Corporation and its licensors retain all intellectual property
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* and proprietary rights in and to this software, related documentation
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* and any modifications thereto. Any use, reproduction, disclosure or
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* distribution of this software and related documentation without an express
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* license agreement from NVIDIA Corporation is strictly prohibited.
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*/
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#ifndef NVS_LOG_H
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#define NVS_LOG_H
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#include <nvs/types-internal.h>
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/*
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* Default log size; 64K entries at 8 bytes each is 512Kb of space. For a space
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* constrained system this is obviously a lot. It can be overridden.
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*/
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#ifndef NVS_LOG_ENTRIES
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#define NVS_LOG_ENTRIES (64 * 1024)
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#endif
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/*
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* Fast and efficient logging, even on microcontrollers, is an absolute
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* must for nvsched. The logging provided here is binary encoded to take up
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* a small amount of space and reduce time spent writing the logs.
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*
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* An implementation of nvsched should decode the logs later, when not in
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* a time critical path. The event type can be decoded with nvs_log_event_string().
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*/
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enum nvs_event {
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NVS_EV_NO_EVENT,
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NVS_EV_CREATE_SCHED,
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NVS_EV_CREATE_DOMAIN,
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NVS_EV_REMOVE_DOMAIN,
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NVS_EV_MAX = 0xffffffff /* Force to 32 bit enum size. */
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};
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struct nvs_sched;
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/**
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* @brief A single log event used to track event type, timestamp, etc. Note this
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* is 8 byte aligned.
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*/
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struct nvs_log_event {
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u64 timestamp;
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u32 data;
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enum nvs_event event;
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};
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/**
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* Simple circular buffer for putting and getting events.
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*/
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struct nvs_log_buffer {
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struct nvs_log_event *events;
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u32 entries;
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u32 get;
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u32 put;
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u64 ts_offset;
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};
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int nvs_log_init(struct nvs_sched *sched);
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void nvs_log_destroy(struct nvs_sched *sched);
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void nvs_log_event(struct nvs_sched *sched, enum nvs_event event, u32 data);
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void nvs_log_get(struct nvs_sched *sched, struct nvs_log_event *ev);
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const char *nvs_log_event_string(enum nvs_event ev);
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#endif
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