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| author | Alejandro Colomar <alx@kernel.org> | 2024-05-30 14:59:38 +0200 |
|---|---|---|
| committer | Alejandro Colomar <alx@kernel.org> | 2024-05-31 01:56:42 +0200 |
| commit | db3021caf3be23f3b40c7e95a126c07c3656884e (patch) | |
| tree | dbaf25a166efa51fab688991f719d3642624f3e7 | |
| parent | e0d0d174a394f6eb00fb55b3d0d784fbd05dec9d (diff) | |
| download | man-pages-db3021caf3be23f3b40c7e95a126c07c3656884e.tar.gz | |
PR_SVE_GET_VL.2const: Tweak after split
Signed-off-by: Alejandro Colomar <alx@kernel.org>
| -rw-r--r-- | man/man2const/PR_SVE_GET_VL.2const | 43 |
1 files changed, 18 insertions, 25 deletions
diff --git a/man/man2const/PR_SVE_GET_VL.2const b/man/man2const/PR_SVE_GET_VL.2const index 20d06237ad..23776762f2 100644 --- a/man/man2const/PR_SVE_GET_VL.2const +++ b/man/man2const/PR_SVE_GET_VL.2const @@ -1,5 +1,6 @@ .\" Copyright 2020, Dave Martin <Dave.Martin@arm.com> .\" Copyright 2020, Michael Kerrisk <mtk.manpages@gmail.com> +.\" Copyright 2024, Alejandro Colomar <alx@kernel.org> .\" .\" SPDX-License-Identifier: Linux-man-pages-copyleft .\" @@ -15,20 +16,13 @@ Standard C library .nf .B #include <sys/prctl.h> .P -.BI "int prctl(int " op ", ...);" +.B int prctl(PR_SVE_GET_VL, 0L, 0L, 0L, 0L); .fi .SH DESCRIPTION -.TP -.BR PR_SVE_GET_VL " (since Linux 4.15, only on arm64)" Get the thread's current SVE vector length configuration. -.IP -Arguments -.IR arg2 ", " arg3 ", " arg4 ", and " arg5 -are ignored. -.IP -Provided that the kernel and platform support SVE, -this operation always succeeds, -returning a nonnegative value that describes the +.P +This operation returns +a nonnegative value that describes the .I current configuration. The bits corresponding to @@ -39,16 +33,6 @@ The bit corresponding to indicates whether the vector length will be inherited across .BR execve (2). -.IP -Note that there is no way to determine whether there is -a pending vector length change that has not yet taken effect. -.IP -For more information, see the kernel source file -.I Documentation/arm64/sve.rst -.\"commit b693d0b372afb39432e1c49ad7b3454855bc6bed -(or -.I Documentation/arm64/sve.txt -before Linux 5.3). .SH RETURN VALUE On success, .BR PR_SVE_GET_VL , @@ -59,13 +43,22 @@ is set to indicate the error. .SH ERRORS .TP .B EINVAL -.I op -is -.B PR_SVE_GET_VL -and SVE is not available on this platform. +SVE is not available on this platform. .SH STANDARDS Linux. +arm64 only. .SH HISTORY +Linux 4.15 (arm64). +.SH CAVEATS +There is no way to determine whether there is +a pending vector length change that has not yet taken effect. .SH SEE ALSO .BR prctl (2), .BR PR_SVE_SET_VL (2const) +.P +For more information, see the kernel source file +.I Documentation/arm64/sve.rst +.\"commit b693d0b372afb39432e1c49ad7b3454855bc6bed +(or +.I Documentation/arm64/sve.txt +before Linux 5.3). |