Signed-off-by: Alejandro Colomar <alx.manpages@xxxxxxxxx> --- man2/membarrier.2 | 16 ++++++++++------ 1 file changed, 10 insertions(+), 6 deletions(-) diff --git a/man2/membarrier.2 b/man2/membarrier.2 index 851f5d59f..fec82f228 100644 --- a/man2/membarrier.2 +++ b/man2/membarrier.2 @@ -28,13 +28,20 @@ membarrier \- issue memory barriers on a set of threads .SH SYNOPSIS .nf .PP -.B #include <linux/membarrier.h> +.BR "#include <linux/membarrier.h>" \ +" /* Definition of " MEMBARRIER_* " constants */" +.BR "#include <sys/syscall.h>" " /* Definition of " SYS_* " constants */" +.B #include <unistd.h> .PP -.BI "int membarrier(int " cmd ", unsigned int " flags ", int " cpu_id ); +.BI "int syscall(SYS_membarrier, int " cmd ", unsigned int " flags \ +", int " cpu_id ); .fi .PP .IR Note : -There is no glibc wrapper for this system call; see NOTES. +glibc provides no wrapper for +.BR membarrier (), +necessitating the use of +.BR syscall (2). .SH DESCRIPTION The .BR membarrier () @@ -322,9 +329,6 @@ Examples where .BR membarrier () can be useful include implementations of Read-Copy-Update libraries and garbage collectors. -.PP -Glibc does not provide a wrapper for this system call; call it using -.BR syscall (2). .SH EXAMPLES Assuming a multithreaded application where "fast_path()" is executed very frequently, and where "slow_path()" is executed infrequently, the -- 2.31.1
