diff options
Diffstat (limited to 'drivers/gpu/arm/midgard/mali_kbase_js_policy_cfs.h')
-rwxr-xr-x | drivers/gpu/arm/midgard/mali_kbase_js_policy_cfs.h | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/drivers/gpu/arm/midgard/mali_kbase_js_policy_cfs.h b/drivers/gpu/arm/midgard/mali_kbase_js_policy_cfs.h new file mode 100755 index 000000000000..b457d8215abe --- /dev/null +++ b/drivers/gpu/arm/midgard/mali_kbase_js_policy_cfs.h @@ -0,0 +1,81 @@ +/* + * + * (C) COPYRIGHT 2011-2015 ARM Limited. All rights reserved. + * + * This program is free software and is provided to you under the terms of the + * GNU General Public License version 2 as published by the Free Software + * Foundation, and any use by you of this program is subject to the terms + * of such GNU licence. + * + * A copy of the licence is included with the program, and can also be obtained + * from Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, + * Boston, MA 02110-1301, USA. + * + */ + + + + + +/* + * Completely Fair Job Scheduler Policy structure definitions + */ + +#ifndef _KBASE_JS_POLICY_CFS_H_ +#define _KBASE_JS_POLICY_CFS_H_ + +#define KBASEP_JS_RUNTIME_EMPTY ((u64)-1) + +/** + * struct kbasep_js_policy_cfs - Data for the CFS policy + * @head_runtime_us: Number of microseconds the least-run context has been + * running for. The kbasep_js_device_data.queue_mutex must + * be held whilst updating this. + * Reads are possible without this mutex, but an older value + * might be read if no memory barries are issued beforehand. + * @least_runtime_us: Number of microseconds the least-run context in the + * context queue has been running for. + * -1 if context queue is empty. + * @rt_least_runtime_us: Number of microseconds the least-run context in the + * realtime (priority) context queue has been running for. + * -1 if realtime context queue is empty + */ +struct kbasep_js_policy_cfs { + u64 head_runtime_us; + atomic64_t least_runtime_us; + atomic64_t rt_least_runtime_us; +}; + +/** + * struct kbasep_js_policy_cfs_ctx - a single linked list of all contexts + * @runtime_us: microseconds this context has been running for + * @process_rt_policy: set if calling process policy scheme is a realtime + * scheduler and will use the priority queue. Non-mutable + * after ctx init + * @process_priority: calling process NICE priority, in the range -20..19 + * + * &kbasep_js_device_data.runpool_irq.lock must be held when updating + * @runtime_us. Initializing will occur on context init and context enqueue + * (which can only occur in one thread at a time), but multi-thread access only + * occurs while the context is in the runpool. + * + * Reads are possible without the spinlock, but an older value might be read if + * no memory barries are issued beforehand. + */ +struct kbasep_js_policy_cfs_ctx { + u64 runtime_us; + bool process_rt_policy; + int process_priority; +}; + +/** + * struct kbasep_js_policy_cfs_job - per job information for CFS + * @ticks: number of ticks that this job has been executing for + * + * &kbasep_js_device_data.runpool_irq.lock must be held when accessing @ticks. + */ +struct kbasep_js_policy_cfs_job { + u32 ticks; +}; + +#endif |