mirror of
https://github.com/NVIDIA/open-gpu-kernel-modules.git
synced 2024-12-02 09:24:21 +01:00
116 lines
4.8 KiB
C
116 lines
4.8 KiB
C
/*******************************************************************************
|
|
Copyright (c) 2016-2022 NVIDIA Corporation
|
|
|
|
Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
of this software and associated documentation files (the "Software"), to
|
|
deal in the Software without restriction, including without limitation the
|
|
rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
|
|
sell copies of the Software, and to permit persons to whom the Software is
|
|
furnished to do so, subject to the following conditions:
|
|
|
|
The above copyright notice and this permission notice shall be
|
|
included in all copies or substantial portions of the Software.
|
|
|
|
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
|
THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
|
|
FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
|
|
DEALINGS IN THE SOFTWARE.
|
|
|
|
*******************************************************************************/
|
|
|
|
#ifndef __UVM_PERF_THRASHING_H__
|
|
#define __UVM_PERF_THRASHING_H__
|
|
|
|
#include "uvm_linux.h"
|
|
#include "uvm_extern_decl.h"
|
|
#include "uvm_forward_decl.h"
|
|
#include "uvm_processors.h"
|
|
#include "uvm_va_block_types.h"
|
|
|
|
typedef enum
|
|
{
|
|
// No thrashing detected
|
|
UVM_PERF_THRASHING_HINT_TYPE_NONE = 0,
|
|
|
|
// Map remotely to avoid future faults (does not help with revocations due
|
|
// to system-wide atomics)
|
|
UVM_PERF_THRASHING_HINT_TYPE_PIN = 1,
|
|
|
|
// Throttle execution of the calling processor (this can be implemented by
|
|
// sleeping or handing other faults)
|
|
UVM_PERF_THRASHING_HINT_TYPE_THROTTLE = 2,
|
|
|
|
// TODO: Bug 1877578: Implement heuristics-driven read-duplication
|
|
// Add a thrashing hint type to read-duplicate a page when it is being
|
|
// accessed read-only from different processors
|
|
} uvm_perf_thrashing_hint_type_t;
|
|
|
|
typedef struct
|
|
{
|
|
uvm_perf_thrashing_hint_type_t type;
|
|
|
|
union
|
|
{
|
|
struct
|
|
{
|
|
// Map to this processor, which must be accessible, at least, from
|
|
// the calling processor
|
|
uvm_processor_id_t residency;
|
|
|
|
// Processors to be mapped, when possible, to the new residency
|
|
uvm_processor_mask_t processors;
|
|
} pin;
|
|
|
|
struct
|
|
{
|
|
// Absolute timestamp in ns after which the throttled processor is
|
|
// allowed to start servicing faults on the thrashing page.
|
|
NvU64 end_time_stamp;
|
|
} throttle;
|
|
};
|
|
} uvm_perf_thrashing_hint_t;
|
|
|
|
// Obtain a hint to prevent thrashing on the page with given address
|
|
uvm_perf_thrashing_hint_t uvm_perf_thrashing_get_hint(uvm_va_block_t *va_block, NvU64 address,
|
|
uvm_processor_id_t requester);
|
|
|
|
// Obtain a pointer to a mask with the processors that are thrashing on the
|
|
// given page. This function assumes that thrashing has been just reported on
|
|
// the page. It will fail otherwise.
|
|
uvm_processor_mask_t *uvm_perf_thrashing_get_thrashing_processors(uvm_va_block_t *va_block, NvU64 address);
|
|
|
|
const uvm_page_mask_t *uvm_perf_thrashing_get_thrashing_pages(uvm_va_block_t *va_block);
|
|
|
|
// Global initialization/cleanup functions
|
|
NV_STATUS uvm_perf_thrashing_init(void);
|
|
void uvm_perf_thrashing_exit(void);
|
|
|
|
// Per-GPU initialization/cleanup functions. See comments in
|
|
// uvm_perf_heuristics.h
|
|
NV_STATUS uvm_perf_thrashing_add_gpu(uvm_gpu_t *gpu);
|
|
void uvm_perf_thrashing_remove_gpu(uvm_gpu_t *gpu);
|
|
|
|
// VA space Initialization/cleanup functions. See comments in
|
|
// uvm_perf_heuristics.h
|
|
NV_STATUS uvm_perf_thrashing_load(uvm_va_space_t *va_space);
|
|
NV_STATUS uvm_perf_thrashing_register_gpu(uvm_va_space_t *va_space, uvm_gpu_t *gpu);
|
|
void uvm_perf_thrashing_stop(uvm_va_space_t *va_space);
|
|
void uvm_perf_thrashing_unload(uvm_va_space_t *va_space);
|
|
|
|
// Destroy the thrashing detection struct for the given block.
|
|
void uvm_perf_thrashing_info_destroy(uvm_va_block_t *va_block);
|
|
|
|
// Unmap remote mappings from all processors on the pinned pages
|
|
// described by region and block_thrashing->pinned pages.
|
|
// va_block_context must not be NULL and va_block_context->policy must be valid.
|
|
// See the comments for uvm_va_block_check_policy_is_valid() in uvm_va_block.h.
|
|
// Locking: the va_block lock must be held.
|
|
NV_STATUS uvm_perf_thrashing_unmap_remote_pinned_pages_all(uvm_va_block_t *va_block,
|
|
uvm_va_block_context_t *va_block_context,
|
|
uvm_va_block_region_t region);
|
|
|
|
#endif
|