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authorAdhemerval Zanella <adhemerval.zanella@linaro.org>2016-11-21 17:40:19 -0200
committerAdhemerval Zanella <adhemerval.zanella@linaro.org>2017-05-03 10:36:43 -0300
commitb62c3815912bc679a966134affdedd3f35ae8621 (patch)
tree23f63208cd67fce9b9638c865dcebf3f887d6d51 /sysdeps/unix
parent26f28fd73d20df8847d93f88b6e2a7bd3bd9bf51 (diff)
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Consolidate Linux epoll_wait syscall
This patch consolidates the epoll_wait Linux syscall generation on
sysdeps/unix/sysv/linux/epoll_wait.c.  The implementation tries to
use __NR_epoll_wait if defined, otherwise calls epoll_pwait.

Checked on i686-linux-gnu, x86_64-linux-gnu, x86_64-linux-gnux32,
arch64-linux-gnu, arm-linux-gnueabihf, and powerpc64le-linux-gnu.

	* sysdeps/unix/sysv/linux/epoll_wait.c: New file.
	* sysdeps/unix/sysv/linux/generic/epoll_wait.c: Remove file.
	* sysdeps/unix/sysv/linux/syscalls.list: Remove epoll_wait from
	auto-generation list.
Diffstat (limited to 'sysdeps/unix')
-rw-r--r--sysdeps/unix/sysv/linux/Makefile2
-rw-r--r--sysdeps/unix/sysv/linux/epoll_wait.c (renamed from sysdeps/unix/sysv/linux/generic/epoll_wait.c)8
-rw-r--r--sysdeps/unix/sysv/linux/generic/Makefile2
-rw-r--r--sysdeps/unix/sysv/linux/syscalls.list1
4 files changed, 8 insertions, 5 deletions
diff --git a/sysdeps/unix/sysv/linux/Makefile b/sysdeps/unix/sysv/linux/Makefile
index 1872cdb179..a8790b1e51 100644
--- a/sysdeps/unix/sysv/linux/Makefile
+++ b/sysdeps/unix/sysv/linux/Makefile
@@ -17,7 +17,7 @@ include $(firstword $(wildcard $(sysdirs:=/sysctl.mk)))
 sysdep_routines += clone umount umount2 readahead \
 		   setfsuid setfsgid epoll_pwait signalfd \
 		   eventfd eventfd_read eventfd_write prlimit \
-		   personality
+		   personality epoll_wait
 
 CFLAGS-gethostid.c = -fexceptions
 CFLAGS-tst-writev.c += "-DARTIFICIAL_LIMIT=(0x80000000-sysconf(_SC_PAGESIZE))"
diff --git a/sysdeps/unix/sysv/linux/generic/epoll_wait.c b/sysdeps/unix/sysv/linux/epoll_wait.c
index d9363f1d8d..eb6e6d3ace 100644
--- a/sysdeps/unix/sysv/linux/generic/epoll_wait.c
+++ b/sysdeps/unix/sysv/linux/epoll_wait.c
@@ -1,6 +1,6 @@
-/* Copyright (C) 2011-2017 Free Software Foundation, Inc.
+/* Linux epoll_wait syscall implementation.
+   Copyright (C) 2017 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011.
 
    The GNU C Library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
@@ -24,5 +24,9 @@
 int
 epoll_wait (int epfd, struct epoll_event *events, int maxevents, int timeout)
 {
+#ifdef __NR_epoll_wait
+  return SYSCALL_CANCEL (epoll_wait, epfd, events, maxevents, timeout);
+#else
   return epoll_pwait (epfd, events, maxevents, timeout, NULL);
+#endif
 }
diff --git a/sysdeps/unix/sysv/linux/generic/Makefile b/sysdeps/unix/sysv/linux/generic/Makefile
index c1daee2396..7e27e79772 100644
--- a/sysdeps/unix/sysv/linux/generic/Makefile
+++ b/sysdeps/unix/sysv/linux/generic/Makefile
@@ -1,3 +1,3 @@
 ifeq ($(subdir),misc)
-sysdep_routines += epoll_create epoll_wait inotify_init
+sysdep_routines += epoll_create inotify_init
 endif
diff --git a/sysdeps/unix/sysv/linux/syscalls.list b/sysdeps/unix/sysv/linux/syscalls.list
index 4d550b8804..1a1090311c 100644
--- a/sysdeps/unix/sysv/linux/syscalls.list
+++ b/sysdeps/unix/sysv/linux/syscalls.list
@@ -12,7 +12,6 @@ delete_module	EXTRA	delete_module	3	delete_module
 epoll_create	EXTRA	epoll_create	i:i	epoll_create
 epoll_create1	EXTRA	epoll_create1	i:i	epoll_create1
 epoll_ctl	EXTRA	epoll_ctl	i:iiip	epoll_ctl
-epoll_wait	EXTRA	epoll_wait	Ci:ipii	epoll_wait
 eventfd		EXTRA	eventfd2	i:ii	eventfd
 execve		-	execve		i:spp	__execve	execve
 fdatasync	-	fdatasync	Ci:i	fdatasync