linux/tools/testing
Yang Xu 9172557bdf selftests/zram01.sh: Fix compression ratio calculation
[ Upstream commit d18da7ec37 ]

zram01 uses `free -m` to measure zram memory usage. The results are no
sense because they are polluted by all running processes on the system.

We Should only calculate the free memory delta for the current process.
So use the third field of /sys/block/zram<id>/mm_stat to measure memory
usage instead. The file is available since kernel 4.1.

orig_data_size(first): uncompressed size of data stored in this disk.
compr_data_size(second): compressed size of data stored in this disk
mem_used_total(third): the amount of memory allocated for this disk

Also remove useless zram cleanup call in zram_fill_fs and so we don't
need to cleanup zram twice if fails.

Signed-off-by: Yang Xu <xuyang2018.jy@fujitsu.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-02-23 12:03:05 +01:00
..
fault-injection
ktest bootconfig/tracing/ktest: Update ktest example for boot-time tracing 2021-08-16 11:39:51 -04:00
kunit kunit: tool: Import missing importlib.abc 2022-02-23 12:03:04 +01:00
nvdimm tools/testing/nvdimm: Fix missing 'fallthrough' warning 2021-08-11 11:55:54 -07:00
radix-tree
scatterlist Merge branch 'akpm' (patches from Andrew) 2021-09-03 10:08:28 -07:00
selftests selftests/zram01.sh: Fix compression ratio calculation 2022-02-23 12:03:05 +01:00
vsock vsock_diag_test: remove free_sock_stat() call in test_no_sockets 2021-10-15 17:21:34 -07:00