dbb470ea7a
- Introduce a new Kconfig to enable mempool in RTIO - Introduce a new RTIO_DEFINE_WITH_MEMPOOL to allocate an RTIO context with an associated memory pool. - Add a new sqe read function rtio_sqe_read_with_pool() for memory pool enabled RTIO contexts - Allow IODevs to allocate only the memory they need via rtio_sqe_rx_buf() - Allow the consumer to get the allocated buffer via rtio_cqe_get_mempool_buffer() - Consumers need to release the buffer via rtio_release_buffer() when processing is complete. Signed-off-by: Yuval Peress <peress@google.com>
55 lines
1.9 KiB
Plaintext
55 lines
1.9 KiB
Plaintext
# Copyright (c) 2022 Intel Corporation
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# SPDX-License-Identifier: Apache-2.0
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menuconfig RTIO
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bool "RTIO"
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if RTIO
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config RTIO_EXECUTOR_SIMPLE
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bool "A simple executor for RTIO"
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default y
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help
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An simple RTIO executor that will execute a queue of requested I/O
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operations as if they are a single chain of submission queue entries. This
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does not support concurrent chains or submissions.
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config RTIO_EXECUTOR_CONCURRENT
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bool "A low cost concurrent executor for RTIO"
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default y
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help
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A low memory cost RTIO executor that will execute a queue of requested I/O
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with a fixed amount of concurrency using minimal memory overhead.
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config RTIO_SUBMIT_SEM
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bool "Use a semaphore when waiting for completions in rtio_submit"
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help
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When calling rtio_submit a semaphore is available to sleep the calling
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thread for each completion queue event until the wait count is met. This
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adds a small RAM overhead for a single semaphore. By default wait_for will
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use polling on the completion queue with a k_yield() in between iterations.
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config RTIO_CONSUME_SEM
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bool "Use a semaphore when waiting for completions in rtio_cqe_consume_block"
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help
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When calling rtio_cqe_consume_block a semaphore is available to sleep the
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calling thread for each completion queue event until the wait count is met.
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This adds a small RAM overhead for a single semaphore. By default the call
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will use polling on the completion queue with a k_yield() in between
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iterations.
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config RTIO_SYS_MEM_BLOCKS
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bool "Include system memory blocks as an optional backing read memory pool"
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select SYS_MEM_BLOCKS
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help
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Enable the RTIO_DEFINE_WITH_MEMPOOL macro which allows queueing reads
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without a pre-allocated memory buffer. Instead the buffer will be taken
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from the allocated memory pool associated with the RTIO context.
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module = RTIO
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module-str = RTIO
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module-help = Sets log level for RTIO support
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source "subsys/logging/Kconfig.template.log_config"
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endif
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