From 88499a87cef0a70f381524b9c4951b53bc5184e3 Mon Sep 17 00:00:00 2001 From: Adhemerval Zanella Date: Mon, 21 Nov 2016 17:26:35 -0200 Subject: posix: Consolidate Linux pause syscall This patch consolidates the pause Linux implementation on sysdeps/unix/sysv/linux/pause.c. If defined the pause syscall (__NR_pause) will be used, other ppoll with 0 arguments will be used instead. It has the small advantage of generic pause implementation with uses rt_sigprocmask plus rt_sigsuspend because it requires only one syscall and the pause is done atomically regarding signal handling (for instance, pause may not be interrupted if the signal arrives between the rt_sigprocmask and rt_sigsuspend syscall). Checked on i686-linux-gnu, x86_64-linux-gnu, x86_64-linux-gnux32, arch64-linux-gnu, arm-linux-gnueabihf, powerpc64le-linux-gnu, sparc64-linux-gnu, and sparcv9-linux-gnu. * sysdeps/unix/sysv/linux/generic/pause.c: Remove file. * sysdeps/unix/sysv/linux/sparc/sparc64/pause.c: Likewise. * sysdeps/unix/sysv/linux/sparc/kernel-features.h [__arch64__] (__NR_pause): Undefine. * sysdeps/unix/sysv/linux/pause.c: New file. * sysdeps/unix/sysv/linux/syscalls.list: Remove pause from auto-generation list. --- ChangeLog | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'ChangeLog') diff --git a/ChangeLog b/ChangeLog index 5ebd3a04ab..135b5a5e87 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,16 @@ +2017-05-18 Adhemerval Zanella + + * sysdeps/unix/sysv/linux/generic/pause.c: Remove file. + * sysdeps/unix/sysv/linux/sparc/sparc64/pause.c: Likewise. + * sysdeps/unix/sysv/linux/sparc/kernel-features.h [__arch64__] + (__NR_pause): Undefine. + * sysdeps/unix/sysv/linux/pause.c: New file. + * sysdeps/unix/sysv/linux/syscalls.list: Remove pause from + auto-generation list. + * sysdeps/unix/sysv/linux/sparc/sparc64/Makefile (CFLAGS-pause.c): + Remove rule. + * posix/Makefile (CFLAGS-pause.c): Remove redundant rule. + 2017-05-18 H.J. Lu * sysdeps/x86_64/multiarch/memcmp.S (__GI_memcmp): Correct -- cgit 1.4.1