TARGETS = bpf
TARGETS += breakpoints
TARGETS += capabilities
TARGETS += cpu-hotplug
TARGETS += efivarfs
TARGETS += exec
TARGETS += firmware
TARGETS += ftrace
TARGETS += futex
TARGETS += gpio
TARGETS += ipc
TARGETS += kcmp
TARGETS += lib
TARGETS += membarrier
TARGETS += memfd
TARGETS += memory-hotplug
TARGETS += mount
TARGETS += mqueue
TARGETS += net
TARGETS += nsfs
TARGETS += powerpc
TARGETS += pstore
TARGETS += ptrace
TARGETS += seccomp
TARGETS += sigaltstack
TARGETS += size
TARGETS += static_keys
TARGETS += sync
TARGETS += sysctl
ifneq (1, $(quicktest))
TARGETS += timers
endif
TARGETS += user
TARGETS += vm
TARGETS += x86
TARGETS += zram
#Please keep the TARGETS list alphabetically sorted
# Run "make quicktest=1 run_tests" or
# "make quicktest=1 kselftest from top level Makefile
TARGETS_HOTPLUG = cpu-hotplug
TARGETS_HOTPLUG += memory-hotplug
# Clear LDFLAGS and MAKEFLAGS if called from main
# Makefile to avoid test build failures when test
# Makefile doesn't have explicit build rules.
ifeq (1,$(MAKELEVEL))
override LDFLAGS =
override MAKEFLAGS =
endif
all:
for TARGET in $(TARGETS); do \
make -C $$TARGET; \
done;
run_tests: all
for TARGET in $(TARGETS); do \
make -C $$TARGET run_tests; \
done;
hotplug:
for TARGET in $(TARGETS_HOTPLUG); do \
make -C $$TARGET; \
done;
run_hotplug: hotplug
for TARGET in $(TARGETS_HOTPLUG); do \
make -C $$TARGET run_full_test; \
done;
clean_hotplug:
for TARGET in $(TARGETS_HOTPLUG); do \
make -C $$TARGET clean; \
done;
run_pstore_crash:
make -C pstore run_crash
INSTALL_PATH ?= install
INSTALL_PATH := $(abspath $(INSTALL_PATH))
ALL_SCRIPT := $(INSTALL_PATH)/run_kselftest.sh
install:
ifdef INSTALL_PATH
@# Ask all targets to install their files
mkdir -p $(INSTALL_PATH)
for TARGET in $(TARGETS); do \
make -C $$TARGET INSTALL_PATH=$(INSTALL_PATH)/$$TARGET install; \
done;
@# Ask all targets to emit their test scripts
echo "#!/bin/sh" > $(ALL_SCRIPT)
echo "cd \$$(dirname \$$0)" >> $(ALL_SCRIPT)
echo "ROOT=\$$PWD" >> $(ALL_SCRIPT)
for TARGET in $(TARGETS); do \
echo "echo ; echo Running tests in $$TARGET" >> $(ALL_SCRIPT); \
echo "echo ========================================" >> $(ALL_SCRIPT); \
echo "cd $$TARGET" >> $(ALL_SCRIPT); \
make -s --no-print-directory -C $$TARGET emit_tests >> $(ALL_SCRIPT); \
echo "cd \$$ROOT" >> $(ALL_SCRIPT); \
done;
chmod u+x $(ALL_SCRIPT)
else
$(error Error: set INSTALL_PATH to use install)
endif
clean:
for TARGET in $(TARGETS); do \
make -C $$TARGET clean; \
done;
.PHONY: install
rm>
PCI/ASPM: Handle PCI-to-PCIe bridges as roots of PCIe hierarchies
In a struct pcie_link_state, link->root points to the pcie_link_state of
the root of the PCIe hierarchy. For the topmost link, this points to
itself (link->root = link). For others, we copy the pointer from the
parent (link->root = link->parent->root).
Previously we recognized that Root Ports originated PCIe hierarchies, but
we treated PCI/PCI-X to PCIe Bridges as being in the middle of the
hierarchy, and when we tried to copy the pointer from link->parent->root,
there was no parent, and we dereferenced a NULL pointer:
BUG: unable to handle kernel NULL pointer dereference at 0000000000000090
IP: [<ffffffff9e424350>] pcie_aspm_init_link_state+0x170/0x820
Recognize that PCI/PCI-X to PCIe Bridges originate PCIe hierarchies just
like Root Ports do, so link->root for these devices should also point to
itself.
Fixes: 51ebfc92b72b ("PCI: Enumerate switches below PCI-to-PCIe bridges")
Link: https://bugzilla.kernel.org/show_bug.cgi?id=193411
Link: https://bugzilla.opensuse.org/show_bug.cgi?id=1022181
Tested-by: lists@ssl-mail.com
Tested-by: Jayachandran C. <jnair@caviumnetworks.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: stable@vger.kernel.org # v4.2+