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Add a POSIX Option Group called XSI_REALTIME (with Kconfig option CONFIG_XSI_REALTIME). When XSI_REALTIME is selected (or when required POSIX Options are enabled), define _XOPEN_REALTIME to be something other than -1 (_XOPEN_VERSION seemed appropriate). Signed-off-by: Chris Friedt <cfriedt@tenstorrent.com>
29 lines
1.0 KiB
Plaintext
29 lines
1.0 KiB
Plaintext
# Copyright (c) 2024 Tenstorrent AI ULC
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#
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# SPDX-License-Identifier: Apache-2.0
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config XSI_REALTIME
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bool "X/Open realtime"
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select POSIX_FSYNC
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select POSIX_MEMLOCK
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select POSIX_MEMLOCK_RANGE
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select POSIX_MESSAGE_PASSING
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# Not yet implemented, but optional
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# imply POSIX_PRIORITIZED_IO
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select POSIX_PRIORITY_SCHEDULING
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select POSIX_SHARED_MEMORY_OBJECTS
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select POSIX_SYNCHRONIZED_IO
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help
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Select 'y' here and the following functions will be provided:
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fsync(), mlockall(), munlockall(), mlock(), munlock(), mq_close(), mq_getattr(), mq_notify(),
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mq_open(), mq_receive(), mq_send(), mq_setattr(), mq_unlink(), sched_get_priority_max(),
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sched_get_priority_min(), sched_getparam(), sched_getscheduler(), sched_rr_get_interval(),
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sched_setparam(), sched_setscheduler(), sched_yield(), mmap(), munmap(), shm_open(),
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shm_unlink()
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The functions fsync(), fdatasync(), and open() will provide synchronized I/O capability.
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For more information, please see
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https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap02.html
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