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Add new xpmem files to the repositories and include them in the build.
ofi_xpmem.h: includes structures which are needed by providers if they
intend on using xpmem
xpmem_monitor.c: Needed for caching
xpmem.c: The interface implementation
Add the XPMEM point to point infrastructure which can be used by shm
provider (or other providers) to execute XPMEM transfer.
Signed-off-by: Amir Shehata <[email protected]>- Loading branch information
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| /* | ||
| * (C) Copyright 2023 UT-Battelle, LLC. All rights reserved. | ||
| * | ||
| * This software is available to you under a choice of one of two | ||
| * licenses. You may choose to be licensed under the terms of the GNU | ||
| * General Public License (GPL) Version 2, available from the file | ||
| * COPYING in the main directory of this source tree, or the | ||
| * BSD license below: | ||
| * | ||
| * Redistribution and use in source and binary forms, with or | ||
| * without modification, are permitted provided that the following | ||
| * conditions are met: | ||
| * | ||
| * - Redistributions of source code must retain the above | ||
| * copyright notice, this list of conditions and the following | ||
| * disclaimer. | ||
| * | ||
| * - Redistributions in binary form must reproduce the above | ||
| * copyright notice, this list of conditions and the following | ||
| * disclaimer in the documentation and/or other materials | ||
| * provided with the distribution. | ||
| * | ||
| * 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 OFI_XPMEM_H | ||
| #define OFI_XPMEM_H | ||
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| #include <ofi_mr.h> | ||
| #include <ofi_util.h> | ||
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| #if HAVE_XPMEM | ||
| #include <xpmem.h> | ||
| #else | ||
| /* define XPMEM specific types to allow the code to | ||
| * compile on different platforms and to allow smr_region to compile | ||
| * without xpmem available. | ||
| */ | ||
| typedef int64_t xpmem_apid_t; | ||
| typedef int64_t xpmem_segid_t; | ||
| #endif /* HAVE_XPMEM */ | ||
|
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| struct xpmem_client { | ||
| uint8_t cap; | ||
| xpmem_apid_t apid; | ||
| uintptr_t addr_max; | ||
| }; | ||
|
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| struct xpmem_pinfo { | ||
| /* XPMEM segment id for this process */ | ||
| xpmem_segid_t seg_id; | ||
| /* maximum attachment address for this process. attempts to attach | ||
| * past this value may fail. */ | ||
| uintptr_t address_max; | ||
| }; | ||
|
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| struct xpmem { | ||
| struct xpmem_pinfo pinfo; | ||
| /* maximum size that will be used with a single memcpy call. | ||
| * On some systems we see better peformance if we chunk the | ||
| * copy into multiple memcpy calls. */ | ||
| uint64_t memcpy_chunk_size; | ||
| }; | ||
|
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| extern struct xpmem *xpmem; | ||
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| int ofi_xpmem_cache_search(struct ofi_mr_cache *cache, | ||
| struct iovec *iov, uint64_t peer_id, | ||
| struct ofi_mr_entry **mr_entry, | ||
| struct xpmem_client *xpmem); | ||
|
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| int ofi_xpmem_cache_open(struct ofi_mr_cache **cache); | ||
| void ofi_xpmem_cache_destroy(struct ofi_mr_cache *cache); | ||
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| int xpmem_init(void); | ||
| int xpmem_cleanup(void); | ||
| int xpmem_copy(struct iovec *local, unsigned long local_cnt, | ||
| struct iovec *remote, unsigned long remote_cnt, | ||
| size_t total, pid_t pid, bool write, void *user_data); | ||
| int ofi_xpmem_enable(struct xpmem_pinfo *peer, | ||
| struct xpmem_client *xpmem); | ||
| void ofi_xpmem_release(struct xpmem_client *xpmem); | ||
|
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| #endif /* OFI_XPMEM_H */ |
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