efd9601e15
The async poller does not work as expected since it can happen that the async poller is removed from the list of pollers while we are iterating over the list. Even list_for_each_entry_safe does not help here since we may remove the next list element, but list_for_each_entry_safe only allows to remove the current list element. Rework the async poller so that it is registered with the poller framework on registration and then is only marked as active with poller_call_async(). This way we do not have to do list manipulations while running the pollers. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
48 lines
934 B
C
48 lines
934 B
C
/*
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* Copyright (C) 2010 Marc Kleine-Budde <mkl@pengutronix.de>
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*
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* This file is released under the GPLv2
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*
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*/
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#ifndef POLLER_H
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#define POLLER_H
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#include <linux/list.h>
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struct poller_struct {
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void (*func)(struct poller_struct *poller);
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int registered;
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struct list_head list;
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};
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int poller_register(struct poller_struct *poller);
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int poller_unregister(struct poller_struct *poller);
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struct poller_async;
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struct poller_async {
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struct poller_struct poller;
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void (*fn)(void *);
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void *ctx;
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uint64_t end;
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int active;
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};
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int poller_async_register(struct poller_async *pa);
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int poller_async_unregister(struct poller_async *pa);
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int poller_call_async(struct poller_async *pa, uint64_t delay_ns,
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void (*fn)(void *), void *ctx);
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int poller_async_cancel(struct poller_async *pa);
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#ifdef CONFIG_POLLER
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void poller_call(void);
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#else
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static inline void poller_call(void)
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{
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}
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#endif /* CONFIG_POLLER */
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#endif /* !POLLER_H */
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