89f9b701f5
This patch adds utilities for managing and using named threads, as well as several locking and synchronization utilities. These utilities help dm-vdo minimize thread transitions and manage interactions between threads. Co-developed-by: J. corwin Coburn <corwin@hurlbutnet.net> Signed-off-by: J. corwin Coburn <corwin@hurlbutnet.net> Co-developed-by: Michael Sclafani <dm-devel@lists.linux.dev> Signed-off-by: Michael Sclafani <dm-devel@lists.linux.dev> Co-developed-by: Thomas Jaskiewicz <tom@jaskiewicz.us> Signed-off-by: Thomas Jaskiewicz <tom@jaskiewicz.us> Co-developed-by: Bruce Johnston <bjohnsto@redhat.com> Signed-off-by: Bruce Johnston <bjohnsto@redhat.com> Co-developed-by: Ken Raeburn <raeburn@redhat.com> Signed-off-by: Ken Raeburn <raeburn@redhat.com> Signed-off-by: Matthew Sakai <msakai@redhat.com> Signed-off-by: Mike Snitzer <snitzer@kernel.org>
37 lines
867 B
C
37 lines
867 B
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright 2023 Red Hat
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*/
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#include "thread-device.h"
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#include "thread-registry.h"
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/* A registry of threads associated with device id numbers. */
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static struct thread_registry device_id_thread_registry;
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/* Any registered thread must be unregistered. */
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void uds_register_thread_device_id(struct registered_thread *new_thread,
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unsigned int *id_ptr)
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{
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uds_register_thread(&device_id_thread_registry, new_thread, id_ptr);
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}
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void uds_unregister_thread_device_id(void)
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{
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uds_unregister_thread(&device_id_thread_registry);
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}
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int uds_get_thread_device_id(void)
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{
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const unsigned int *pointer;
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pointer = uds_lookup_thread(&device_id_thread_registry);
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return (pointer != NULL) ? *pointer : -1;
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}
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void uds_initialize_thread_device_registry(void)
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{
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uds_initialize_thread_registry(&device_id_thread_registry);
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}
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