#!/bin/bash # Intel MIC Platform Software Stack (MPSS) # # Copyright(c) 2013 Intel Corporation. # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License, version 2, as # published by the Free Software Foundation. # # This program 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 # General Public License for more details. # # The full GNU General Public License is included in this distribution in # the file called "COPYING". # # Intel MIC User Space Tools. # # micctrl - Controls MIC boot/start/stop. # # chkconfig: 2345 95 05 # description: start MPSS stack processing. # ### BEGIN INIT INFO # Provides: micctrl ### END INIT INFO # Source function library. . /etc/init.d/functions sysfs="/sys/class/mic" _status() { f=$sysfs/$1 echo -e $1 state: "`cat $f/state`" shutdown_status: "`cat $f/shutdown_status`" } status() { if [ "`echo $1 | head -c3`" == "mic" ]; then _status $1 return $? fi for f in $sysfs/* do _status `basename $f` RETVAL=$? [ $RETVAL -ne 0 ] && return $RETVAL done return 0 } _reset() { f=$sysfs/$1 echo reset > $f/state } reset() { if [ "`echo $1 | head -c3`" == "mic" ]; then _reset $1 return $? fi for f in $sysfs/* do _reset `basename $f` RETVAL=$? [ $RETVAL -ne 0 ] && return $RETVAL done return 0 } _boot() { f=$sysfs/$1 echo "linux" > $f/bootmode echo "mic/uos.img" > $f/firmware echo "mic/$1.image" > $f/ramdisk echo "boot" > $f/state } boot() { if [ "`echo $1 | head -c3`" == "mic" ]; then _boot $1 return $? fi for f in $sysfs/* do _boot `basename $f` RETVAL=$? [ $RETVAL -ne 0 ] && return $RETVAL done return 0 } _shutdown() { f=$sysfs/$1 echo shutdown > $f/state } shutdown() { if [ "`echo $1 | head -c3`" == "mic" ]; then _shutdown $1 return $? fi for f in $sysfs/* do _shutdown `basename $f` RETVAL=$? [ $RETVAL -ne 0 ] && return $RETVAL done return 0 } _wait() { f=$sysfs/$1 while [ "`cat $f/state`" != "offline" -a "`cat $f/state`" != "online" ] do sleep 1 echo -e "Waiting for $1 to go offline" done } wait() { if [ "`echo $1 | head -c3`" == "mic" ]; then _wait $1 return $? fi # Wait for the cards to go offline for f in $sysfs/* do _wait `basename $f` RETVAL=$? [ $RETVAL -ne 0 ] && return $RETVAL done return 0 } if [ ! -d "$sysfs" ]; then echo -e $"Module unloaded " exit 3 fi case $1 in -s) status $2 ;; -r) reset $2 ;; -b) boot $2 ;; -S) shutdown $2 ;; -w) wait $2 ;; *) echo $"Usage: $0 {-s (status) |-r (reset) |-b (boot) |-S (shutdown) |-w (wait)}" exit 2 esac exit $? '>path: root/include/uapi/asm-generic/siginfo.h
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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2017-02-03 17:10:28 +1100
committerMichael Ellerman <mpe@ellerman.id.au>2017-02-08 23:36:29 +1100
commitd7df2443cd5f67fc6ee7c05a88e4996e8177f91b (patch)
tree098a7c0ca4fceb8a65cb1f693c9d71990388933d /include/uapi/asm-generic/siginfo.h
parenta0615a16f7d0ceb5804d295203c302d496d8ee91 (diff)
powerpc/mm: Fix spurrious segfaults on radix with autonuma
When autonuma (Automatic NUMA balancing) marks a PTE inaccessible it clears all the protection bits but leave the PTE valid. With the Radix MMU, an attempt at executing from such a PTE will take a fault with bit 35 of SRR1 set "SRR1_ISI_N_OR_G". It is thus incorrect to treat all such faults as errors. We should pass them to handle_mm_fault() for autonuma to deal with. The case of pages that are really not executable is handled by the existing test for VM_EXEC further down. That leaves us with catching the kernel attempts at executing user pages. We can catch that earlier, even before we do find_vma. It is never valid on powerpc for the kernel to take an exec fault to begin with. So fold that test with the existing test for the kernel faulting on kernel addresses to bail out early. Fixes: 1d18ad026844 ("powerpc/mm: Detect instruction fetch denied and report") Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Acked-by: Balbir Singh <bsingharora@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'include/uapi/asm-generic/siginfo.h')