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authorLinus Torvalds <torvalds@linux-foundation.org>2021-02-22 14:34:00 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2021-02-22 14:34:00 -0800
commitb12b47249688915e987a9a2a393b522f86f6b7ab (patch)
treeeae34f7fa64474bb3123f7b69c411ade6127c41f /tools/testing/selftests/powerpc
parent6ff6f86bc4d02949b5688d69de1c89c310d62c44 (diff)
parent82d2c16b350f72aa21ac2a6860c542aa4b43a51e (diff)
Merge tag 'powerpc-5.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc updates from Michael Ellerman: - A large series adding wrappers for our interrupt handlers, so that irq/nmi/user tracking can be isolated in the wrappers rather than spread in each handler. - Conversion of the 32-bit syscall handling into C. - A series from Nick to streamline our TLB flushing when using the Radix MMU. - Switch to using queued spinlocks by default for 64-bit server CPUs. - A rework of our PCI probing so that it happens later in boot, when more generic infrastructure is available. - Two small fixes to allow 32-bit little-endian processes to run on 64-bit kernels. - Other smaller features, fixes & cleanups. Thanks to: Alexey Kardashevskiy, Ananth N Mavinakayanahalli, Aneesh Kumar K.V, Athira Rajeev, Bhaskar Chowdhury, Cédric Le Goater, Chengyang Fan, Christophe Leroy, Christopher M. Riedl, Fabiano Rosas, Florian Fainelli, Frederic Barrat, Ganesh Goudar, Hari Bathini, Jiapeng Chong, Joseph J Allen, Kajol Jain, Markus Elfring, Michal Suchanek, Nathan Lynch, Naveen N. Rao, Nicholas Piggin, Oliver O'Halloran, Pingfan Liu, Po-Hsu Lin, Qian Cai, Ram Pai, Randy Dunlap, Sandipan Das, Stephen Rothwell, Tyrel Datwyler, Will Springer, Yury Norov, and Zheng Yongjun. * tag 'powerpc-5.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (188 commits) powerpc/perf: Adds support for programming of Thresholding in P10 powerpc/pci: Remove unimplemented prototypes powerpc/uaccess: Merge raw_copy_to_user_allowed() into raw_copy_to_user() powerpc/uaccess: Merge __put_user_size_allowed() into __put_user_size() powerpc/uaccess: get rid of small constant size cases in raw_copy_{to,from}_user() powerpc/64: Fix stack trace not displaying final frame powerpc/time: Remove get_tbl() powerpc/time: Avoid using get_tbl() spi: mpc52xx: Avoid using get_tbl() powerpc/syscall: Avoid storing 'current' in another pointer powerpc/32: Handle bookE debugging in C in syscall entry/exit powerpc/syscall: Do not check unsupported scv vector on PPC32 powerpc/32: Remove the counter in global_dbcr0 powerpc/32: Remove verification of MSR_PR on syscall in the ASM entry powerpc/syscall: implement system call entry/exit logic in C for PPC32 powerpc/32: Always save non volatile GPRs at syscall entry powerpc/syscall: Change condition to check MSR_RI powerpc/syscall: Save r3 in regs->orig_r3 powerpc/syscall: Use is_compat_task() powerpc/syscall: Make interrupt.c buildable on PPC32 ...
Diffstat (limited to 'tools/testing/selftests/powerpc')
-rwxr-xr-xtools/testing/selftests/powerpc/eeh/eeh-basic.sh41
-rw-r--r--[-rwxr-xr-x]tools/testing/selftests/powerpc/eeh/eeh-functions.sh168
-rwxr-xr-xtools/testing/selftests/powerpc/eeh/eeh-vf-aware.sh45
-rwxr-xr-xtools/testing/selftests/powerpc/eeh/eeh-vf-unaware.sh35
4 files changed, 248 insertions, 41 deletions
diff --git a/tools/testing/selftests/powerpc/eeh/eeh-basic.sh b/tools/testing/selftests/powerpc/eeh/eeh-basic.sh
index 0d783e1065c8..442b666ccdb5 100755
--- a/tools/testing/selftests/powerpc/eeh/eeh-basic.sh
+++ b/tools/testing/selftests/powerpc/eeh/eeh-basic.sh
@@ -1,28 +1,13 @@
#!/bin/sh
# SPDX-License-Identifier: GPL-2.0-only
-KSELFTESTS_SKIP=4
-
. ./eeh-functions.sh
-if ! eeh_supported ; then
- echo "EEH not supported on this system, skipping"
- exit $KSELFTESTS_SKIP;
-fi
-
-if [ ! -e "/sys/kernel/debug/powerpc/eeh_dev_check" ] && \
- [ ! -e "/sys/kernel/debug/powerpc/eeh_dev_break" ] ; then
- echo "debugfs EEH testing files are missing. Is debugfs mounted?"
- exit $KSELFTESTS_SKIP;
-fi
+eeh_test_prep # NB: may exit
pre_lspci=`mktemp`
lspci > $pre_lspci
-# Bump the max freeze count to something absurd so we don't
-# trip over it while breaking things.
-echo 5000 > /sys/kernel/debug/powerpc/eeh_max_freezes
-
# record the devices that we break in here. Assuming everything
# goes to plan we should get them back once the recover process
# is finished.
@@ -30,34 +15,16 @@ devices=""
# Build up a list of candidate devices.
for dev in `ls -1 /sys/bus/pci/devices/ | grep '\.0$'` ; do
- # skip bridges since we can't recover them (yet...)
- if [ -e "/sys/bus/pci/devices/$dev/pci_bus" ] ; then
- echo "$dev, Skipped: bridge"
+ if ! eeh_can_break $dev ; then
continue;
fi
- # Skip VFs for now since we don't have a reliable way
- # to break them.
+ # Skip VFs for now since we don't have a reliable way to break them.
if [ -e "/sys/bus/pci/devices/$dev/physfn" ] ; then
echo "$dev, Skipped: virtfn"
continue;
fi
- if [ "ahci" = "$(basename $(realpath /sys/bus/pci/devices/$dev/driver))" ] ; then
- echo "$dev, Skipped: ahci doesn't support recovery"
- continue
- fi
-
- # Don't inject errosr into an already-frozen PE. This happens with
- # PEs that contain multiple PCI devices (e.g. multi-function cards)
- # and injecting new errors during the recovery process will probably
- # result in the recovery failing and the device being marked as
- # failed.
- if ! pe_ok $dev ; then
- echo "$dev, Skipped: Bad initial PE state"
- continue;
- fi
-
echo "$dev, Added"
# Add to this list of device to check
@@ -86,5 +53,5 @@ echo "$failed devices failed to recover ($dev_count tested)"
lspci | diff -u $pre_lspci -
rm -f $pre_lspci
-test "$failed" == 0
+test "$failed" -eq 0
exit $?
diff --git a/tools/testing/selftests/powerpc/eeh/eeh-functions.sh b/tools/testing/selftests/powerpc/eeh/eeh-functions.sh
index 00dc32c0ed75..70daa3925dcb 100755..100644
--- a/tools/testing/selftests/powerpc/eeh/eeh-functions.sh
+++ b/tools/testing/selftests/powerpc/eeh/eeh-functions.sh
@@ -1,6 +1,12 @@
#!/bin/sh
# SPDX-License-Identifier: GPL-2.0-only
+export KSELFTESTS_SKIP=4
+
+log() {
+ echo >/dev/stderr $*
+}
+
pe_ok() {
local dev="$1"
local path="/sys/bus/pci/devices/$dev/eeh_pe_state"
@@ -39,6 +45,52 @@ eeh_supported() {
grep -q 'EEH Subsystem is enabled' /proc/powerpc/eeh
}
+eeh_test_prep() {
+ if ! eeh_supported ; then
+ echo "EEH not supported on this system, skipping"
+ exit $KSELFTESTS_SKIP;
+ fi
+
+ if [ ! -e "/sys/kernel/debug/powerpc/eeh_dev_check" ] && \
+ [ ! -e "/sys/kernel/debug/powerpc/eeh_dev_break" ] ; then
+ log "debugfs EEH testing files are missing. Is debugfs mounted?"
+ exit $KSELFTESTS_SKIP;
+ fi
+
+ # Bump the max freeze count to something absurd so we don't
+ # trip over it while breaking things.
+ echo 5000 > /sys/kernel/debug/powerpc/eeh_max_freezes
+}
+
+eeh_can_break() {
+ # skip bridges since we can't recover them (yet...)
+ if [ -e "/sys/bus/pci/devices/$dev/pci_bus" ] ; then
+ log "$dev, Skipped: bridge"
+ return 1;
+ fi
+
+ # The ahci driver doesn't support error recovery. If the ahci device
+ # happens to be hosting the root filesystem, and then we go and break
+ # it the system will generally go down. We should probably fix that
+ # at some point
+ if [ "ahci" = "$(basename $(realpath /sys/bus/pci/devices/$dev/driver))" ] ; then
+ log "$dev, Skipped: ahci doesn't support recovery"
+ return 1;
+ fi
+
+ # Don't inject errosr into an already-frozen PE. This happens with
+ # PEs that contain multiple PCI devices (e.g. multi-function cards)
+ # and injecting new errors during the recovery process will probably
+ # result in the recovery failing and the device being marked as
+ # failed.
+ if ! pe_ok $dev ; then
+ log "$dev, Skipped: Bad initial PE state"
+ return 1;
+ fi
+
+ return 0
+}
+
eeh_one_dev() {
local dev="$1"
@@ -46,7 +98,7 @@ eeh_one_dev() {
# testing so check that the argument is a well-formed sysfs device
# name.
if ! test -e /sys/bus/pci/devices/$dev/ ; then
- echo "Error: '$dev' must be a sysfs device name (DDDD:BB:DD.F)"
+ log "Error: '$dev' must be a sysfs device name (DDDD:BB:DD.F)"
return 1;
fi
@@ -70,16 +122,124 @@ eeh_one_dev() {
if pe_ok $dev ; then
break;
fi
- echo "$dev, waited $i/${max_wait}"
+ log "$dev, waited $i/${max_wait}"
sleep 1
done
if ! pe_ok $dev ; then
- echo "$dev, Failed to recover!"
+ log "$dev, Failed to recover!"
return 1;
fi
- echo "$dev, Recovered after $i seconds"
+ log "$dev, Recovered after $i seconds"
return 0;
}
+eeh_has_driver() {
+ test -e /sys/bus/pci/devices/$1/driver;
+ return $?
+}
+
+eeh_can_recover() {
+ # we'll get an IO error if the device's current driver doesn't support
+ # error recovery
+ echo $1 > '/sys/kernel/debug/powerpc/eeh_dev_can_recover' 2>/dev/null
+
+ return $?
+}
+
+eeh_find_all_pfs() {
+ devices=""
+
+ # SR-IOV on pseries requires hypervisor support, so check for that
+ is_pseries=""
+ if grep -q pSeries /proc/cpuinfo ; then
+ if [ ! -f /proc/device-tree/rtas/ibm,open-sriov-allow-unfreeze ] ||
+ [ ! -f /proc/device-tree/rtas/ibm,open-sriov-map-pe-number ] ; then
+ return 1;
+ fi
+
+ is_pseries="true"
+ fi
+
+ for dev in `ls -1 /sys/bus/pci/devices/` ; do
+ sysfs="/sys/bus/pci/devices/$dev"
+ if [ ! -e "$sysfs/sriov_numvfs" ] ; then
+ continue
+ fi
+
+ # skip unsupported PFs on pseries
+ if [ -z "$is_pseries" ] &&
+ [ ! -f "$sysfs/of_node/ibm,is-open-sriov-pf" ] &&
+ [ ! -f "$sysfs/of_node/ibm,open-sriov-vf-bar-info" ] ; then
+ continue;
+ fi
+
+ # no driver, no vfs
+ if ! eeh_has_driver $dev ; then
+ continue
+ fi
+
+ devices="$devices $dev"
+ done
+
+ if [ -z "$devices" ] ; then
+ return 1;
+ fi
+
+ echo $devices
+ return 0;
+}
+
+# attempts to enable one VF on each PF so we can do VF specific tests.
+# stdout: list of enabled VFs, one per line
+# return code: 0 if vfs are found, 1 otherwise
+eeh_enable_vfs() {
+ pf_list="$(eeh_find_all_pfs)"
+
+ vfs=0
+ for dev in $pf_list ; do
+ pf_sysfs="/sys/bus/pci/devices/$dev"
+
+ # make sure we have a single VF
+ echo 0 > "$pf_sysfs/sriov_numvfs"
+ echo 1 > "$pf_sysfs/sriov_numvfs"
+ if [ "$?" != 0 ] ; then
+ log "Unable to enable VFs on $pf, skipping"
+ continue;
+ fi
+
+ vf="$(basename $(realpath "$pf_sysfs/virtfn0"))"
+ if [ $? != 0 ] ; then
+ log "unable to find enabled vf on $pf"
+ echo 0 > "$pf_sysfs/sriov_numvfs"
+ continue;
+ fi
+
+ if ! eeh_can_break $vf ; then
+ log "skipping "
+
+ echo 0 > "$pf_sysfs/sriov_numvfs"
+ continue;
+ fi
+
+ vfs="$((vfs + 1))"
+ echo $vf
+ done
+
+ test "$vfs" != 0
+ return $?
+}
+
+eeh_disable_vfs() {
+ pf_list="$(eeh_find_all_pfs)"
+ if [ -z "$pf_list" ] ; then
+ return 1;
+ fi
+
+ for dev in $pf_list ; do
+ echo 0 > "/sys/bus/pci/devices/$dev/sriov_numvfs"
+ done
+
+ return 0;
+}
diff --git a/tools/testing/selftests/powerpc/eeh/eeh-vf-aware.sh b/tools/testing/selftests/powerpc/eeh/eeh-vf-aware.sh
new file mode 100755
index 000000000000..874c11953bb6
--- /dev/null
+++ b/tools/testing/selftests/powerpc/eeh/eeh-vf-aware.sh
@@ -0,0 +1,45 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0-only
+
+. ./eeh-functions.sh
+
+eeh_test_prep # NB: may exit
+
+vf_list="$(eeh_enable_vfs)";
+if $? != 0 ; then
+ log "No usable VFs found. Skipping EEH unaware VF test"
+ exit $KSELFTESTS_SKIP;
+fi
+
+log "Enabled VFs: $vf_list"
+
+tested=0
+passed=0
+for vf in $vf_list ; do
+ log "Testing $vf"
+
+ if ! eeh_can_recover $vf ; then
+ log "Driver for $vf doesn't support error recovery, skipping"
+ continue;
+ fi
+
+ tested="$((tested + 1))"
+
+ log "Breaking $vf..."
+ if ! eeh_one_dev $vf ; then
+ log "$vf failed to recover"
+ continue;
+ fi
+
+ passed="$((passed + 1))"
+done
+
+eeh_disable_vfs
+
+if [ "$tested" == 0 ] ; then
+ echo "No VFs with EEH aware drivers found, skipping"
+ exit $KSELFTESTS_SKIP
+fi
+
+test "$failed" != 0
+exit $?;
diff --git a/tools/testing/selftests/powerpc/eeh/eeh-vf-unaware.sh b/tools/testing/selftests/powerpc/eeh/eeh-vf-unaware.sh
new file mode 100755
index 000000000000..8a4c147b9d43
--- /dev/null
+++ b/tools/testing/selftests/powerpc/eeh/eeh-vf-unaware.sh
@@ -0,0 +1,35 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0-only
+
+. ./eeh-functions.sh
+
+eeh_test_prep # NB: may exit
+
+vf_list="$(eeh_enable_vfs)";
+if $? != 0 ; then
+ log "No usable VFs found. Skipping EEH unaware VF test"
+ exit $KSELFTESTS_SKIP;
+fi
+
+log "Enabled VFs: $vf_list"
+
+failed=0
+for vf in $vf_list ; do
+ log "Testing $vf"
+
+ if eeh_can_recover $vf ; then
+ log "Driver for $vf supports error recovery. Unbinding..."
+ echo "$vf" > /sys/bus/pci/devices/$vf/driver/unbind
+ fi
+
+ log "Breaking $vf..."
+ if ! eeh_one_dev $vf ; then
+ log "$vf failed to recover"
+ failed="$((failed + 1))"
+ fi
+done
+
+eeh_disable_vfs
+
+test "$failed" != 0
+exit $?;