From: Szabolcs Nagy via Libc-alpha <libc-alpha@sourceware.org>
To: Naohiro Tamura <naohirot@fujitsu.com>
Cc: Naohiro Tamura <naohirot@jp.fujitsu.com>, libc-alpha@sourceware.org
Subject: Re: [PATCH v2 5/6] scripts: Added Vector Length Set test helper script
Date: Wed, 26 May 2021 11:24:39 +0100 [thread overview]
Message-ID: <20210526102439.GB9028@arm.com> (raw)
In-Reply-To: <20210520073437.931585-1-naohirot@fujitsu.com>
The 05/20/2021 07:34, Naohiro Tamura wrote:
> From: Naohiro Tamura <naohirot@jp.fujitsu.com>
>
> Let me send the whole updated patch.
> Thanks.
> Naohiro
>
> -- >8 --
> Subject: [PATCH v2 5/6] aarch64: Added Vector Length Set test helper script
>
> This patch is a test helper script to change Vector Length for child
> process. This script can be used as test-wrapper for 'make check'.
>
> Usage examples:
>
> ~/build$ make check subdirs=string \
> test-wrapper='~/glibc/sysdeps/unix/sysv/linux/aarch64/vltest.py 16'
>
> ~/build$ ~/glibc/sysdeps/unix/sysv/linux/aarch64/vltest.py 16 \
> make test t=string/test-memcpy
>
> ~/build$ ~/glibc/sysdeps/unix/sysv/linux/aarch64/vltest.py 32 \
> ./debugglibc.sh string/test-memmove
>
> ~/build$ ~/glibc/sysdeps/unix/sysv/linux/aarch64/vltest.py 64 \
> ./testrun.sh string/test-memset
thanks, this is ok for master.
i will commit it.
> ---
> INSTALL | 4 ++
> manual/install.texi | 3 +
> sysdeps/unix/sysv/linux/aarch64/vltest.py | 82 +++++++++++++++++++++++
> 3 files changed, 89 insertions(+)
> create mode 100755 sysdeps/unix/sysv/linux/aarch64/vltest.py
>
> diff --git a/INSTALL b/INSTALL
> index 065a568585e6..bc761ab98bbf 100644
> --- a/INSTALL
> +++ b/INSTALL
> @@ -380,6 +380,10 @@ the same syntax as 'test-wrapper-env', the only difference in its
> semantics being starting with an empty set of environment variables
> rather than the ambient set.
>
> + For AArch64 with SVE, when testing the GNU C Library, 'test-wrapper'
> +may be set to "SRCDIR/sysdeps/unix/sysv/linux/aarch64/vltest.py
> +VECTOR-LENGTH" to change Vector Length.
> +
> Installing the C Library
> ========================
>
> diff --git a/manual/install.texi b/manual/install.texi
> index eb41fbd0b5ab..f1d858fb789c 100644
> --- a/manual/install.texi
> +++ b/manual/install.texi
> @@ -418,6 +418,9 @@ use has the same syntax as @samp{test-wrapper-env}, the only
> difference in its semantics being starting with an empty set of
> environment variables rather than the ambient set.
>
> +For AArch64 with SVE, when testing @theglibc{}, @samp{test-wrapper}
> +may be set to "@var{srcdir}/sysdeps/unix/sysv/linux/aarch64/vltest.py
> +@var{vector-length}" to change Vector Length.
>
> @node Running make install
> @appendixsec Installing the C Library
> diff --git a/sysdeps/unix/sysv/linux/aarch64/vltest.py b/sysdeps/unix/sysv/linux/aarch64/vltest.py
> new file mode 100755
> index 000000000000..bed62ad151e0
> --- /dev/null
> +++ b/sysdeps/unix/sysv/linux/aarch64/vltest.py
> @@ -0,0 +1,82 @@
> +#!/usr/bin/python3
> +# Set Scalable Vector Length test helper
> +# Copyright (C) 2021 Free Software Foundation, Inc.
> +# This file is part of the GNU C Library.
> +#
> +# The GNU C Library is free software; you can redistribute it and/or
> +# modify it under the terms of the GNU Lesser General Public
> +# License as published by the Free Software Foundation; either
> +# version 2.1 of the License, or (at your option) any later version.
> +#
> +# The GNU C Library is distributed in the hope that it will be useful,
> +# but WITHOUT ANY WARRANTY; without even the implied warranty of
> +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> +# Lesser General Public License for more details.
> +#
> +# You should have received a copy of the GNU Lesser General Public
> +# License along with the GNU C Library; if not, see
> +# <https://www.gnu.org/licenses/>.
> +"""Set Scalable Vector Length test helper.
> +
> +Set Scalable Vector Length for child process.
> +
> +examples:
> +
> +~/build$ make check subdirs=string \
> +test-wrapper='~/glibc/sysdeps/unix/sysv/linux/aarch64/vltest.py 16'
> +
> +~/build$ ~/glibc/sysdeps/unix/sysv/linux/aarch64/vltest.py 16 \
> +make test t=string/test-memcpy
> +
> +~/build$ ~/glibc/sysdeps/unix/sysv/linux/aarch64/vltest.py 32 \
> +./debugglibc.sh string/test-memmove
> +
> +~/build$ ~/glibc/sysdeps/unix/sysv/linux/aarch64/vltest.py 64 \
> +./testrun.sh string/test-memset
> +"""
> +import argparse
> +from ctypes import cdll, CDLL
> +import os
> +import sys
> +
> +EXIT_SUCCESS = 0
> +EXIT_FAILURE = 1
> +EXIT_UNSUPPORTED = 77
> +
> +AT_HWCAP = 16
> +HWCAP_SVE = (1 << 22)
> +
> +PR_SVE_GET_VL = 51
> +PR_SVE_SET_VL = 50
> +PR_SVE_SET_VL_ONEXEC = (1 << 18)
> +PR_SVE_VL_INHERIT = (1 << 17)
> +PR_SVE_VL_LEN_MASK = 0xffff
> +
> +def main(args):
> + libc = CDLL("libc.so.6")
> + if not libc.getauxval(AT_HWCAP) & HWCAP_SVE:
> + print("CPU doesn't support SVE")
> + sys.exit(EXIT_UNSUPPORTED)
> +
> + libc.prctl(PR_SVE_SET_VL,
> + args.vl[0] | PR_SVE_SET_VL_ONEXEC | PR_SVE_VL_INHERIT)
> + os.execvp(args.args[0], args.args)
> + print("exec system call failure")
> + sys.exit(EXIT_FAILURE)
> +
> +if __name__ == '__main__':
> + parser = argparse.ArgumentParser(description=
> + "Set Scalable Vector Length test helper",
> + formatter_class=argparse.ArgumentDefaultsHelpFormatter)
> +
> + # positional argument
> + parser.add_argument("vl", nargs=1, type=int,
> + choices=range(16, 257, 16),
> + help=('vector length '\
> + 'which is multiples of 16 from 16 to 256'))
> + # remainDer arguments
> + parser.add_argument('args', nargs=argparse.REMAINDER,
> + help=('args '\
> + 'which is passed to child process'))
> + args = parser.parse_args()
> + main(args)
> --
> 2.17.1
>
next prev parent reply other threads:[~2021-05-26 10:24 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-17 2:28 [PATCH 0/5] Added optimized memcpy/memmove/memset for A64FX Naohiro Tamura
2021-03-17 2:33 ` [PATCH 1/5] config: Added HAVE_SVE_ASM_SUPPORT for aarch64 Naohiro Tamura
2021-03-29 12:11 ` Szabolcs Nagy via Libc-alpha
2021-03-30 6:19 ` naohirot
2021-03-17 2:34 ` [PATCH 2/5] aarch64: Added optimized memcpy and memmove for A64FX Naohiro Tamura
2021-03-29 12:44 ` Szabolcs Nagy via Libc-alpha
2021-03-30 7:17 ` naohirot
2021-03-17 2:34 ` [PATCH 3/5] aarch64: Added optimized memset " Naohiro Tamura
2021-03-17 2:35 ` [PATCH 4/5] scripts: Added Vector Length Set test helper script Naohiro Tamura
2021-03-29 13:20 ` Szabolcs Nagy via Libc-alpha
2021-03-30 7:25 ` naohirot
2021-03-17 2:35 ` [PATCH 5/5] benchtests: Added generic_memcpy and generic_memmove to large benchtests Naohiro Tamura
2021-03-29 12:03 ` [PATCH 0/5] Added optimized memcpy/memmove/memset for A64FX Szabolcs Nagy via Libc-alpha
2021-05-10 1:45 ` naohirot
2021-05-14 13:35 ` Szabolcs Nagy via Libc-alpha
2021-05-19 0:11 ` naohirot
2021-05-12 9:23 ` [PATCH v2 0/6] aarch64: " Naohiro Tamura
2021-05-12 9:26 ` [PATCH v2 1/6] config: Added HAVE_AARCH64_SVE_ASM for aarch64 Naohiro Tamura
2021-05-26 10:05 ` Szabolcs Nagy via Libc-alpha
2021-05-12 9:27 ` [PATCH v2 2/6] aarch64: define BTI_C and BTI_J macros as NOP unless HAVE_AARCH64_BTI Naohiro Tamura
2021-05-26 10:06 ` Szabolcs Nagy via Libc-alpha
2021-05-12 9:28 ` [PATCH v2 3/6] aarch64: Added optimized memcpy and memmove for A64FX Naohiro Tamura
2021-05-26 10:19 ` Szabolcs Nagy via Libc-alpha
2021-05-12 9:28 ` [PATCH v2 4/6] aarch64: Added optimized memset " Naohiro Tamura
2021-05-26 10:22 ` Szabolcs Nagy via Libc-alpha
2021-05-12 9:29 ` [PATCH v2 5/6] scripts: Added Vector Length Set test helper script Naohiro Tamura
2021-05-12 16:58 ` Joseph Myers
2021-05-13 9:53 ` naohirot
2021-05-20 7:34 ` Naohiro Tamura
2021-05-26 10:24 ` Szabolcs Nagy via Libc-alpha [this message]
2021-05-12 9:29 ` [PATCH v2 6/6] benchtests: Fixed bench-memcpy-random: buf1: mprotect failed Naohiro Tamura
2021-05-26 10:25 ` Szabolcs Nagy via Libc-alpha
2021-05-27 0:22 ` [PATCH v2 0/6] aarch64: Added optimized memcpy/memmove/memset for A64FX naohirot
2021-05-27 23:50 ` naohirot
2021-05-27 7:42 ` [PATCH v3 1/2] aarch64: Added optimized memcpy and memmove " Naohiro Tamura
2021-05-27 7:44 ` [PATCH v3 2/2] aarch64: Added optimized memset " Naohiro Tamura
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