From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from lists.gentoo.org (pigeon.gentoo.org [208.92.234.80]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by finch.gentoo.org (Postfix) with ESMTPS id 047F1139360 for ; Tue, 3 Aug 2021 08:07:34 +0000 (UTC) Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id 59E99E0954; Tue, 3 Aug 2021 08:07:33 +0000 (UTC) Received: from smtp.gentoo.org (woodpecker.gentoo.org [IPv6:2001:470:ea4a:1:5054:ff:fec7:86e4]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by pigeon.gentoo.org (Postfix) with ESMTPS id 33919E0951 for ; Tue, 3 Aug 2021 08:07:33 +0000 (UTC) Received: from oystercatcher.gentoo.org (unknown [IPv6:2a01:4f8:202:4333:225:90ff:fed9:fc84]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.gentoo.org (Postfix) with ESMTPS id 00C64343810 for ; Tue, 3 Aug 2021 08:07:32 +0000 (UTC) Received: from localhost.localdomain (localhost [IPv6:::1]) by oystercatcher.gentoo.org (Postfix) with ESMTP id 891967A7 for ; Tue, 3 Aug 2021 08:07:30 +0000 (UTC) From: "Alessandro Barbieri" To: gentoo-commits@lists.gentoo.org Content-Transfer-Encoding: 8bit Content-type: text/plain; charset=UTF-8 Reply-To: gentoo-dev@lists.gentoo.org, "Alessandro Barbieri" Message-ID: <1627977960.5412c3bcd8b34b6477f791a8684e00a404c82135.Alessandro-Barbieri@gentoo> Subject: [gentoo-commits] repo/proj/guru:dev commit in: sys-kernel/xpmem/ X-VCS-Repository: repo/proj/guru X-VCS-Files: sys-kernel/xpmem/Manifest sys-kernel/xpmem/metadata.xml sys-kernel/xpmem/xpmem-2.6.3_p20210217.ebuild X-VCS-Directories: sys-kernel/xpmem/ X-VCS-Committer: Alessandro-Barbieri X-VCS-Committer-Name: Alessandro Barbieri X-VCS-Revision: 5412c3bcd8b34b6477f791a8684e00a404c82135 X-VCS-Branch: dev Date: Tue, 3 Aug 2021 08:07:30 +0000 (UTC) Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-commits@lists.gentoo.org X-Auto-Response-Suppress: DR, RN, NRN, OOF, AutoReply X-Archives-Salt: 54c1c170-ab0a-4983-8bb2-3a4e2e613eba X-Archives-Hash: 40790604f97f267a39f350ef5b755197 commit: 5412c3bcd8b34b6477f791a8684e00a404c82135 Author: Alessandro Barbieri gmail com> AuthorDate: Tue Aug 3 08:06:00 2021 +0000 Commit: Alessandro Barbieri gmail com> CommitDate: Tue Aug 3 08:06:00 2021 +0000 URL: https://gitweb.gentoo.org/repo/proj/guru.git/commit/?id=5412c3bc sys-kernel/xpmem: initial import Signed-off-by: Alessandro Barbieri gmail.com> sys-kernel/xpmem/Manifest | 1 + sys-kernel/xpmem/metadata.xml | 55 ++++++++++++++++++++++++++ sys-kernel/xpmem/xpmem-2.6.3_p20210217.ebuild | 56 +++++++++++++++++++++++++++ 3 files changed, 112 insertions(+) diff --git a/sys-kernel/xpmem/Manifest b/sys-kernel/xpmem/Manifest new file mode 100644 index 000000000..2cac8e390 --- /dev/null +++ b/sys-kernel/xpmem/Manifest @@ -0,0 +1 @@ +DIST xpmem-2.6.3_p20210217.tar.gz 55906 BLAKE2B 609f9b18529e06504c02cbee3383355e161ebcad98d558ff518d125cf4b795fd32f0b6eba8e23c67e4ccf6eb2b6686be21594335a48fcdee71344ee063af65e3 SHA512 fb09d7120686957d02c29c7058e6b1e1de35637252c4942efcd722306117384cb6bdc8d3e175c26d3de56c36dd6946f53fa341473a7ad660d68847a23d331bb3 diff --git a/sys-kernel/xpmem/metadata.xml b/sys-kernel/xpmem/metadata.xml new file mode 100644 index 000000000..31c9905e2 --- /dev/null +++ b/sys-kernel/xpmem/metadata.xml @@ -0,0 +1,55 @@ + + + + +This is an experimental version of XPMEM based on a version provided by +Cray and uploaded to https://code.google.com/p/xpmem. This version supports +any kernel 3.12 and newer. Keep in mind there may be bugs and this version +may cause kernel panics, code crashes, eat your cat, etc. + +XPMEM is a Linux kernel module that enables a process to map the +memory of another process into its virtual address space. Source code +can be obtained by cloning the Git repository, original Mercurial +repository or by downloading a tarball from the link above. + +The XPMEM API has three main functions: + +xpmem_make() +xpmem_get() +xpmem_attach() + +A process calls xpmem_make() to export a region of its virtual address +space. Other processes can then attach to the region by calling +xpmem_get() and xpmem_attach(). After a memory region is attached, it +is accessed via direct loads and stores. This enables upper-level +protocols such as MPI and SHMEM to perform single-copy address-space +to address-space transfers, completely at user-level. + +Note, there is a limitation to the usage of an attached region. Any +system call that will call get_user_pages() on the region from the +non-owning process with get EFAULT. This include pthread mutexes +and condition variable, and SYS V semaphores. We intend to address +this limitation in a future release. + +XPMEM regions are free to have "holes" in them, meaning virtual memory +regions that are not allocated. This makes XPMEM somewhat more +flexible than mmap(). A process could, for example, export a region +via XPMEM starting at address 0 and extending 4 GB. Accesses to +allocated (valid) virtual addresses in this region proceed normally, +and pages are mapped between address spaces on demand. A segfault will +occur if the source process or any other process mapping the region +tries to access an unallocated (invalid) virtual address in the +region. + + + lssndrbarbieri@gmail.com + Alessandro Barbieri + + + Build the kernel module + + + https://github.com/hjelmn/xpmem/issues + hjelmn/xpmem + + diff --git a/sys-kernel/xpmem/xpmem-2.6.3_p20210217.ebuild b/sys-kernel/xpmem/xpmem-2.6.3_p20210217.ebuild new file mode 100644 index 000000000..f03a6b4e0 --- /dev/null +++ b/sys-kernel/xpmem/xpmem-2.6.3_p20210217.ebuild @@ -0,0 +1,56 @@ +# Copyright 1999-2020 Gentoo Authors +# Distributed under the terms of the GNU General Public License v2 + +EAPI=7 + +inherit autotools linux-mod + +MODULES_OPTIONAL_USE="modules" +MY_REV="242eaa1eca92567c2118afe21e37cafc524f9166" + +DESCRIPTION="Linux Cross-Memory Attach" +HOMEPAGE="https://github.com/hjelmn/xpmem" +SRC_URI="https://github.com/hjelmn/xpmem/archive/${MY_REV}.tar.gz -> ${P}.tar.gz" +S="${WORKDIR}/${PN}-${MY_REV}" + +LICENSE="LGPL-2.1" +SLOT="0" +KEYWORDS="~amd64" +IUSE="+modules" + +MODULE_NAMES="xpmem(misc:${WORKDIR}/module/kernel:${WORKDIR}/module/kernel)" +BUILD_TARGETS="all" + +src_prepare() { + default + AT_M4DIR="m4" eautoreconf + if use modules; then + cp -r "${S}" "${WORKDIR}/module" || die + fi +} + +src_configure() { + local myconf=( + --disable-kernel-module + ) + econf "${myconf[@]}" + + if use modules; then + pushd "${WORKDIR}/module" || die + econf + popd || die + fi +} + +src_compile() { + default + use modules && linux-mod_src_compile +} + +src_install() { + einstalldocs + default + use modules && linux-mod_src_install + find "${ED}" -name '*.la' -delete || die + find "${ED}" -name '*.a' -delete || die +}