0745866165
ttm_page_alloc_debugfs can be registered to output the state of pools. Debugfs file will output number of pages freed from the pool, number of pages in pool now and the lowes number of pages in pool since previous shrink. Signed-off-by: Pauli Nieminen <suokkos@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
74 lines
2.4 KiB
C
74 lines
2.4 KiB
C
/*
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* Copyright (c) Red Hat Inc.
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sub license,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*
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* Authors: Dave Airlie <airlied@redhat.com>
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* Jerome Glisse <jglisse@redhat.com>
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*/
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#ifndef TTM_PAGE_ALLOC
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#define TTM_PAGE_ALLOC
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#include "ttm_bo_driver.h"
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#include "ttm_memory.h"
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/**
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* Get count number of pages from pool to pages list.
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*
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* @pages: heado of empty linked list where pages are filled.
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* @flags: ttm flags for page allocation.
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* @cstate: ttm caching state for the page.
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* @count: number of pages to allocate.
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*/
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int ttm_get_pages(struct list_head *pages,
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int flags,
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enum ttm_caching_state cstate,
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unsigned count);
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/**
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* Put linked list of pages to pool.
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*
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* @pages: list of pages to free.
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* @page_count: number of pages in the list. Zero can be passed for unknown
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* count.
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* @flags: ttm flags for page allocation.
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* @cstate: ttm caching state.
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*/
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void ttm_put_pages(struct list_head *pages,
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unsigned page_count,
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int flags,
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enum ttm_caching_state cstate);
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/**
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* Initialize pool allocator.
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*
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* Pool allocator is internaly reference counted so it can be initialized
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* multiple times but ttm_page_alloc_fini has to be called same number of
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* times.
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*/
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int ttm_page_alloc_init(unsigned max_pages);
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/**
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* Free pool allocator.
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*/
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void ttm_page_alloc_fini(void);
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/**
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* Output the state of pools to debugfs file
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*/
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extern int ttm_page_alloc_debugfs(struct seq_file *m, void *data);
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#endif
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