linux_dsm_epyc7002/tools/testing
Fenghua Yu a669817a33 selftests/resctrl: Fix checking for < 0 for unsigned values
[ Upstream commit 1205b688c92558a04d8dd4cbc2b213e0fceba5db ]

Dan reported following static checker warnings

tools/testing/selftests/resctrl/resctrl_val.c:545 measure_vals()
warn: 'bw_imc' unsigned <= 0

tools/testing/selftests/resctrl/resctrl_val.c:549 measure_vals()
warn: 'bw_resc_end' unsigned <= 0

These warnings are reported because
1. measure_vals() declares 'bw_imc' and 'bw_resc_end' as unsigned long
   variables
2. Return value of get_mem_bw_imc() and get_mem_bw_resctrl() are assigned
   to 'bw_imc' and 'bw_resc_end' respectively
3. The returned values are checked for <= 0 to see if the calls failed

Checking for < 0 for an unsigned value doesn't make any sense.

Fix this issue by changing the implementation of get_mem_bw_imc() and
get_mem_bw_resctrl() such that they now accept reference to a variable
and set the variable appropriately upon success and return 0, else return
< 0 on error.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Tested-by: Babu Moger <babu.moger@amd.com>
Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-05-11 14:47:27 +02:00
..
fault-injection
ktest
kunit kunit: tool: Fix a python tuple typing error 2021-04-10 13:36:08 +02:00
nvdimm
radix-tree idr test suite: Create anchor before launching throbber 2021-04-16 11:43:21 +02:00
scatterlist
selftests selftests/resctrl: Fix checking for < 0 for unsigned values 2021-05-11 14:47:27 +02:00
vsock