linux/tools
Muhammad Usama Anjum ed74abcd1d selftests: mm: protection_keys: save/restore nr_hugepages value from launch script
The save/restore of nr_hugepages was added to the test itself by using the
atexit() functionality.  But it is broken as parent exits after creating
child.  Hence calling the atexit() function early.  That's not it.  The
child exits after creating its child and so on.

The parent cannot wait to get the termination status for its children as
it'll keep on holding the resources until the new pkey allocation fails. 
It is impossible to wait for exits of all the grand and great grand
children.  Hence the restoring of nr_hugepages value from parent is wrong.

Let's save/restore the nr_hugepages settings in the launch script
instead of doing it in the test.

Link: https://lkml.kernel.org/r/20240419115027.3848958-1-usama.anjum@collabora.com
Fixes: c52eb6db7b ("selftests: mm: restore settings from only parent process")
Signed-off-by: Muhammad Usama Anjum <usama.anjum@collabora.com>
Reported-by: Joey Gouly <joey.gouly@arm.com>
Closes: https://lore.kernel.org/all/20240418125250.GA2941398@e124191.cambridge.arm.com
Cc: Joey Gouly <joey.gouly@arm.com>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2024-04-25 10:07:27 -07:00
..
accounting
arch LoongArch changes for v6.9 2024-03-22 10:22:45 -07:00
bootconfig
bpf libbpf, selftests/bpf: Adjust libbpf, bpftool, selftests to match LLVM 2024-03-15 14:24:00 -07:00
build perf: build: introduce the libcapstone 2024-02-20 18:06:25 -08:00
certs
cgroup
counter
crypto crypto: ccp - Update return values for some unit tests 2024-02-24 08:41:20 +08:00
debugging
firewire
firmware
gpio
hv hv/hv_kvp_daemon: Handle IPv4 and Ipv6 combination for keyfile format 2024-04-10 21:25:40 +00:00
iio
include memblock tests: fix build errors 2024-04-08 10:11:37 -07:00
kvm/kvm_stat
laptop
leds
lib bpf-for-netdev 2024-03-26 12:55:18 +01:00
memory-model
mm tools/mm: add thpmaps script to dump THP usage info 2024-02-22 10:24:38 -08:00
net/ynl tools: ynl: fix setting presence bits in simple nests 2024-03-22 17:54:38 -07:00
objtool objtool: Fix compile failure when using the x32 compiler 2024-03-30 22:12:37 +01:00
pci
pcmcia
perf RISC-V Patches for the 6.9 Merge Window 2024-03-22 10:41:13 -07:00
power Turbostat version 2024.04.10 2024-04-10 13:13:27 -07:00
rcu
scripts treewide: remove meaningless assignments in Makefiles 2024-02-23 14:19:07 -08:00
spi
testing selftests: mm: protection_keys: save/restore nr_hugepages value from launch script 2024-04-25 10:07:27 -07:00
thermal
time
tracing tools/rtla: Add -U/--user-load option to timerlat 2024-03-20 05:39:06 +01:00
usb
verification tools/verification: Use tools/build makefiles on rv 2024-03-20 05:39:06 +01:00
virtio tools: virtio: introduce vhost_net_test 2024-03-05 11:38:14 +01:00
wmi
workqueue
Makefile tools/Makefile: remove cgroup target 2024-03-26 11:07:21 -07:00