From mboxrd@z Thu Jan 1 00:00:00 1970 From: Helge Deller Subject: [GIT PULL] parisc updates for v3.15 Date: Fri, 16 May 2014 22:01:12 +0200 Message-ID: <20140516200112.GA1315@p100.fritz.box> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii To: Linus Torvalds , linux-kernel@vger.kernel.org, linux-parisc@vger.kernel.org, James Bottomley Return-path: List-ID: List-Id: linux-parisc.vger.kernel.org Hi Linus, please pull the latest parisc architecture fixes for kernel 3.15 from git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux.git parisc-3.15-4 There are two patches in here: The first patch greatly improves latency and corrects the memory ordering in our light-weight atomic locking syscall. The second patch ratelimits printing of userspace segfaults in the same way as it's done on other platforms. This fixes a possible DOS on parisc since it prevents the syslog to grow too fast. For example, when the debian acl2 package was built on our debian buildd servers, this package produced lots of gigabytes in syslog in very short time and thus filled our harddisks, which then turned the server nearly completely unaccessible and unresponsive. Thanks, Helge ---------------------------------------------------------------- Helge Deller (1): parisc: ratelimit userspace segfault printing John David Anglin (1): parisc: Improve LWS-CAS performance arch/parisc/Kconfig | 1 + arch/parisc/kernel/syscall.S | 12 +++++++--- arch/parisc/kernel/traps.c | 54 ++++++++++++++++++++------------------------ arch/parisc/mm/fault.c | 44 ++++++++++++++++++++++++------------ 4 files changed, 65 insertions(+), 46 deletions(-)