Using this helper removes an in-kernel call to the sys_eventfd() syscall. This patch is part of a series which removes in-kernel calls to syscalls. On this basis, the syscall entry path can be streamlined. For details, see http://lkml.kernel.org/r/20180325162527.GA17492@xxxxxxxxxxxxxxxxxxxxxxxxxx Cc: Alexander Viro <viro@xxxxxxxxxxxxxxxxxx> Signed-off-by: Dominik Brodowski <linux@xxxxxxxxxxxxxxxxxxxx> --- fs/eventfd.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/fs/eventfd.c b/fs/eventfd.c index 012f5bd46dfa..08d3bd602f73 100644 --- a/fs/eventfd.c +++ b/fs/eventfd.c @@ -380,7 +380,7 @@ struct eventfd_ctx *eventfd_ctx_fileget(struct file *file) } EXPORT_SYMBOL_GPL(eventfd_ctx_fileget); -SYSCALL_DEFINE2(eventfd2, unsigned int, count, int, flags) +static int do_eventfd(unsigned int count, int flags) { struct eventfd_ctx *ctx; int fd; @@ -409,8 +409,13 @@ SYSCALL_DEFINE2(eventfd2, unsigned int, count, int, flags) return fd; } +SYSCALL_DEFINE2(eventfd2, unsigned int, count, int, flags) +{ + return do_eventfd(count, flags); +} + SYSCALL_DEFINE1(eventfd, unsigned int, count) { - return sys_eventfd2(count, 0); + return do_eventfd(count, 0); } -- 2.16.3
