a5d454cfef
While migrating from v5.15 to v5.19 of the Linux Kernel, a build error
was observed:
ERROR: modpost: "do_exit" [...] undefined!
The reason do_exit is undefined is because Linux Kernel commit
eb55e716ac1a ("exit: Stop exporting do_exit") removed the
EXPORT_SYMBOL() with the justification "there are no more modular uses
of do_exit".
Commit eb55e716ac1a was preceded by commit 111e70490d2a
("exit/kthread: Have kernel threads return instead of calling
do_exit") which details why, since commit 63706172f332 ("kthreads:
rework kthread_stop()"), it is unnecessary to call do_exit().
Note that commit 63706172f332 was introduced in 2009 in v2.6.31-rc1.
Since we do not need to support any kernels before that time, we can
follow the same advice and return instead of calling do_exit().
Currently do_exit() is only called from qdf_exit_thread(). As a result
of the preceding investigation, all former callers of qdf_exit_thread()
have been modified to no longer call it. Since it is obsolete, remove
it.
Change-Id: I22f27692fa8766df080630b9b0640c259285557c
CRs-Fixed: 3300460
134 خطوط
4.0 KiB
C
134 خطوط
4.0 KiB
C
/*
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* Copyright (c) 2014-2018, 2021 The Linux Foundation. All rights reserved.
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* Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
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*
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* Permission to use, copy, modify, and/or distribute this software for
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* any purpose with or without fee is hereby granted, provided that the
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* above copyright notice and this permission notice appear in all
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* copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
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* WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
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* AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
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* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
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* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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/**
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* DOC: qdf_event.h
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* This file provides OS abstraction for event APIs.
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*/
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#if !defined(__QDF_EVENT_H)
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#define __QDF_EVENT_H
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/* Include Files */
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#include "qdf_status.h"
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#include <qdf_types.h>
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#include <i_qdf_event.h>
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#include <qdf_trace.h>
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#include <qdf_list.h>
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/* Preprocessor definitions and constants */
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#ifdef __cplusplus
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extern "C" {
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#endif /* __cplusplus */
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typedef __qdf_event_t qdf_event_t;
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/* Function declarations and documenation */
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QDF_STATUS qdf_event_create(qdf_event_t *event);
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/**
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* qdf_event_set() - sets a QDF event for single waiting threads
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* @event: The event to set to the signalled state
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*
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* The state of the specified event is set to signalled by calling
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* qdf_event_set().
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*
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* Single thread waiting on the event as a result of a qdf_event_wait() will
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* be unblocked and available to be scheduled for execution when the event
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* is signaled by a call to qdf_event_set().
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*
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* Return: QDF status
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*/
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QDF_STATUS qdf_event_set(qdf_event_t *event);
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/**
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* qdf_event_set_all() - sets a QDF event for all waiting threads
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* @event: The event to set to the signalled state
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*
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* The state of the specified event is set to signalled by calling
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* qdf_event_set_all().
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*
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* Any threads waiting on the event as a result of a qdf_event_wait() will
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* be unblocked and available to be scheduled for execution when the event
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* is signaled by a call to qdf_event_set().
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*
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* Return: QDF status
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*/
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QDF_STATUS qdf_event_set_all(qdf_event_t *event);
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QDF_STATUS qdf_event_reset(qdf_event_t *event);
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QDF_STATUS qdf_event_destroy(qdf_event_t *event);
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QDF_STATUS qdf_wait_single_event(qdf_event_t *event,
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uint32_t timeout);
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/**
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* qdf_complete_wait_events() - Sets all the events which are in the list.
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*
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* This function traverses the list of events and sets all of them. It
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* sets the flag force_set as TRUE to indicate that these events have
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* been forcefully set.
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*
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* Return: None
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*/
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void qdf_complete_wait_events(void);
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/**
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* qdf_wait_for_event_completion() - Waits for an event to be set.
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* @event: Pointer to an event to wait on.
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* @timeout: Timeout value (in milliseconds).
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*
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* This function adds the event in a list and waits on it until it
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* is set or the timeout duration elapses. The purpose of waiting
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* is considered complete only if the event is set and the flag
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* force_set is FALSE, it returns success in this case. In other
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* cases it returns appropriate error status.
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*
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* Return: QDF status
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*/
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QDF_STATUS qdf_wait_for_event_completion(qdf_event_t *event,
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uint32_t timeout);
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/**
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* qdf_event_list_init() - Creates a list and spinlock for events.
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*
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* This function creates a list for maintaining events on which threads
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* wait for completion. A spinlock is also created to protect related
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* operations.
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*
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* Return: None
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*/
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void qdf_event_list_init(void);
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/**
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* qdf_event_list_destroy() - Destroys list and spinlock created for events.
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*
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* This function destroys the list and spinlock created for events on which
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* threads wait for completion.
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*
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* Return: None
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*/
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void qdf_event_list_destroy(void);
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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#endif /* __QDF_EVENT_H */
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