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Revert "modules: use si_mem_available() when possible"

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This method produced too optimistic free memory value, which in result
led to oom killer activation. This patch restores more conservative
free memory calculation method.

This reverts commit 1e9b7a4262.

Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
This commit is contained in:
Robert Baldyga
2021-01-14 14:38:03 +01:00
parent f967596b47
commit ca3e1a5984
2 changed files with 11 additions and 20 deletions
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29
configure.d/1_global_page_state.conf
View File

@@ -9,39 +9,30 @@
check() {
cur_name=$(basename $2)
config_file_path=$1
if compile_module $cur_name "si_mem_available()" "linux/mm.h"
if compile_module $cur_name "global_zone_page_state(1)" "linux/mm.h"
then
echo $cur_name "1" >> $config_file_path
elif compile_module $cur_name "global_zone_page_state(1)" "linux/mm.h"
then
echo $cur_name "2" >> $config_file_path
elif compile_module $cur_name "global_page_state(1)" "linux/mm.h"
then
echo $cur_name "3" >> $config_file_path
else
echo $cur_name "X" >> $config_file_path
fi
echo $cur_name "2" >> $config_file_path
else
echo $cur_name "X" >> $config_file_path
fi
}
apply() {
case "$1" in
"1")
add_function "
static inline unsigned long cas_get_free_mem(void)
{ return si_mem_available() << PAGE_SHIFT;
static inline unsigned long cas_global_zone_page_state(enum zone_stat_item item)
{
return global_zone_page_state(item);
}" ;;
"2")
add_function "
static inline unsigned long cas_get_free_mem(void)
static inline unsigned long cas_global_zone_page_state(enum zone_stat_item item)
{
return global_zone_page_state(NR_FREE_PAGES) << PAGE_SHIFT;
}" ;;
"3")
add_function "
static inline unsigned long cas_get_free_mem(void)
{
return global_page_state(NR_FREE_PAGES) << PAGE_SHIFT;
return global_page_state(item);
}" ;;
*)
exit 1