From mboxrd@z Thu Jan 1 00:00:00 1970 From: Roland Dreier Subject: [GIT PULL] please pull ummunotify Date: Thu, 10 Sep 2009 21:38:22 -0700 Message-ID: Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Sender: linux-rdma-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: torvalds-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org, akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org, jsquyres-FYB4Gu1CFyUAvxtiuMwx3w@public.gmane.org Cc: linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, general-ZwoEplunGu1OwGhvXhtEPSCwEArCW2h5@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: linux-rdma@vger.kernel.org Linus, please consider pulling from master.kernel.org:/pub/scm/linux/kernel/git/roland/infiniband.git u= mmunotify This tree is also available from kernel.org mirrors at: git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband.git= ummunotify This will get "ummunotify," a new character device that allows a userspace library to register for MMU notifications; this is particularly useful for MPI implementions (message passing libraries used in HPC) to be able to keep track of what wacky things consumers do to their memory mappings. My colleague Jeff Squyres from the Open MPI project posted a blog entry about why MPI wants this: http://blogs.cisco.com/ciscotalk/performance/comments/better_linux_memo= ry_tracking/ His summary of ummunotify: "It=E2=80=99s elegant, doesn=E2=80=99t require strange linker tricks,= and seems to work in all cases. Yay!" This code went through several review iterations on lkml and was in -mm and -next for quite a few weeks. Andrew is OK with merging it (I think -- Andrew please correct me if I misunderstood you). Roland Dreier (1): ummunotify: Userspace support for MMU notifications Documentation/Makefile | 3 +- Documentation/ummunotify/Makefile | 7 + Documentation/ummunotify/ummunotify.txt | 150 ++++++++ Documentation/ummunotify/umn-test.c | 200 +++++++++++ drivers/char/Kconfig | 12 + drivers/char/Makefile | 1 + drivers/char/ummunotify.c | 566 +++++++++++++++++++++++= ++++++++ include/linux/Kbuild | 1 + include/linux/ummunotify.h | 121 +++++++ 9 files changed, 1060 insertions(+), 1 deletions(-) create mode 100644 Documentation/ummunotify/Makefile create mode 100644 Documentation/ummunotify/ummunotify.txt create mode 100644 Documentation/ummunotify/umn-test.c create mode 100644 drivers/char/ummunotify.c create mode 100644 include/linux/ummunotify.h -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" i= n the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html