eventfd.h

Go to the documentation of this file.

/*
 * DCL eventfd.h -- drm_syncobj's eventfd signalling is inert.
 *
 * eventfd_ctx_fdget() fails the ioctl up front (no eventfds on Xeneva), so
 * the signal/put sides never run; they exist to keep the syncobj code
 * linking and parsing.  One-argument eventfd_signal() is the v7.2 signature.
 */
#ifndef _LINUX_EVENTFD_H
#define _LINUX_EVENTFD_H
 
#include <linux/err.h>
#include <linux/types.h>
 
struct eventfd_ctx {
    int _dcl_dummy;
};
 
static inline struct eventfd_ctx *eventfd_ctx_fdget(int fd)
{
    (void)fd;
    return ERR_PTR(-ENOSYS);
}
 
static inline int eventfd_signal(struct eventfd_ctx *ctx)
{
    (void)ctx;
    return 0;
}
 
static inline void eventfd_ctx_put(struct eventfd_ctx *ctx)
{
    (void)ctx;
}
 
#endif /* _LINUX_EVENTFD_H */