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selftests: kallsyms: fix and clarify current test boundaries

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Provide and clarify the existing ranges and what you should expect.
Fix the gen_test_kallsyms.sh script to accept different ranges.

Fixes: 84b4a51fce ("selftests: add new kallsyms selftests")
Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
This commit is contained in:
Luis Chamberlain 2024-11-27 19:06:03 -08:00
parent 7ea13556f7
commit 3e1d95b63c
2 changed files with 38 additions and 3 deletions
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32
lib/Kconfig.debug
View File

@ -3003,9 +3003,39 @@ config TEST_KALLSYMS_D
tristate
depends on m
choice
prompt "Kallsym test range"
default TEST_KALLSYMS_LARGE
help
Selecting something other than "Fast" will enable tests which slow
down the build and may crash your build.
config TEST_KALLSYMS_FAST
bool "Fast builds"
help
You won't really be testing kallsysms, so this just helps fast builds
when allmodconfig is used..
config TEST_KALLSYMS_LARGE
bool "Enable testing kallsyms with large exports"
help
This will enable larger number of symbols. This will slow down
your build considerably.
config TEST_KALLSYMS_MAX
bool "Known kallsysms limits"
help
This will enable exports to the point we know we'll start crashing
builds.
endchoice
config TEST_KALLSYMS_NUMSYMS
int "test kallsyms number of symbols"
default 100
range 2 10000
default 2 if TEST_KALLSYMS_FAST
default 100 if TEST_KALLSYMS_LARGE
default 10000 if TEST_KALLSYMS_MAX
help
The number of symbols to create on TEST_KALLSYMS_A, only one of which
module TEST_KALLSYMS_B will use. This also will be used

9
lib/tests/module/gen_test_kallsyms.sh
View File

@ -7,6 +7,11 @@ NUM_SYMS=$2
SCALE_FACTOR=$3
TEST_TYPE=$(echo $TARGET | sed -e 's|lib/tests/module/test_kallsyms_||g')
TEST_TYPE=$(echo $TEST_TYPE | sed -e 's|.c||g')
FIRST_B_LOOKUP=1
if [[ $NUM_SYMS -gt 2 ]]; then
FIRST_B_LOOKUP=$((NUM_SYMS/2))
fi
gen_template_module_header()
{
@ -52,10 +57,10 @@ ____END_MODULE
gen_template_module_data_b()
{
printf "\nextern int auto_test_a_%010d;\n\n" 28
printf "\nextern int auto_test_a_%010d;\n\n" $FIRST_B_LOOKUP
echo "static int auto_runtime_test(void)"
echo "{"
printf "\nreturn auto_test_a_%010d;\n" 28
printf "\nreturn auto_test_a_%010d;\n" $FIRST_B_LOOKUP
echo "}"
}