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nvmap: Use conftest to finding shrinker_alloc() presence

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Use conftest to find whether shrinker_alloc() is present
or not.
In Linux v6.7, commit c42d50aefd17 ("mm: shrinker: add infrastructure for
dynamically allocating shrinker") added this API.

Bug 4346767

Change-Id: Ida724bb31d3c4db650b3a5742c5972f984cb9152
Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/3028574
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
This commit is contained in:
Laxman Dewangan
2023-12-05 10:07:13 +00:00
committed by mobile promotions
parent b0bfc4b801
commit 3b457a1293
4 changed files with 22 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
Makefile
View File

@@ -83,9 +83,6 @@ subdir-ccflags-y += -DNV_DRM_DEBUGFS_REMOVE_HAS_ROOT_ARGS
# get_file_rcu() have change the argument
subdir-ccflags-y += -DNV_GET_FILE_RCU_HAS_PTR_FILE_ARGS
# Support enable to allocate shrinker dynamically
subdir-ccflags-y += -DNV_NVMAP_DYNAMIC_SHRINKER_ALLOC_SUPPORT
endif
ifeq ($(CONFIG_TEGRA_VIRTUALIZATION),y)

6
drivers/video/tegra/nvmap/nvmap_pp.c
View File

@@ -581,7 +581,7 @@ static unsigned long nvmap_page_pool_scan_objects(struct shrinker *shrinker,
SHRINK_STOP : (sc->nr_to_scan - remaining);
}
#if defined(NV_NVMAP_DYNAMIC_SHRINKER_ALLOC_SUPPORT)
#if defined(NV_SHRINKER_ALLOC_PRESENT) /* Linux 6.7 */
static struct shrinker *nvmap_page_pool_shrinker;
#else
static struct shrinker nvmap_page_pool_shrinker = {
@@ -775,7 +775,7 @@ int nvmap_page_pool_init(struct nvmap_device *dev)
NULL, "nvmap-bz");
if (IS_ERR(background_allocator))
goto fail;
#if defined(NV_NVMAP_DYNAMIC_SHRINKER_ALLOC_SUPPORT)
#if defined(NV_SHRINKER_ALLOC_PRESENT) /* Linux 6.7 */
nvmap_page_pool_shrinker = shrinker_alloc(0, "nvmap_pp_shrinker");
if (!nvmap_page_pool_shrinker) {
goto fail;
@@ -810,7 +810,7 @@ int nvmap_page_pool_fini(struct nvmap_device *dev)
* registered
*/
if (!IS_ERR_OR_NULL(background_allocator)) {
#if defined(NV_NVMAP_DYNAMIC_SHRINKER_ALLOC_SUPPORT)
#if defined(NV_SHRINKER_ALLOC_PRESENT) /* Linux 6.7 */
shrinker_free(nvmap_page_pool_shrinker);
nvmap_page_pool_shrinker = NULL;
#else

1
scripts/conftest/Makefile
View File

@@ -125,6 +125,7 @@ NV_CONFTEST_FUNCTION_COMPILE_TESTS += netif_napi_add_weight
NV_CONFTEST_FUNCTION_COMPILE_TESTS += pde_data
NV_CONFTEST_FUNCTION_COMPILE_TESTS += pwm_ops_struct_has_owner
NV_CONFTEST_FUNCTION_COMPILE_TESTS += register_shrinker_has_fmt_arg
NV_CONFTEST_FUNCTION_COMPILE_TESTS += shrinker_alloc
NV_CONFTEST_FUNCTION_COMPILE_TESTS += snd_soc_card_jack_new_has_no_snd_soc_jack_pins
NV_CONFTEST_FUNCTION_COMPILE_TESTS += snd_soc_component_driver_struct_has_non_legacy_dai_naming
NV_CONFTEST_FUNCTION_COMPILE_TESTS += snd_soc_dai_link_struct_has_c2c_params_arg

18
scripts/conftest/conftest.sh
View File

@@ -7021,6 +7021,24 @@ compile_test() {
compile_check_conftest "$CODE" "NV_REQUEST_STRUCT_HAS_COMPLETION_DATA_ARG" "" "types"
;;
shrinker_alloc)
#
# Determine if the shrinker alloc present or not.
#
# In Linux v6.7, commit c42d50aefd17 ("mm: shrinker: add infrastructure for
# dynamically allocating shrinker")
#
CODE="
#include <linux/atomic.h>
#include <linux/compiler_attributes.h>
#include <linux/shrinker.h>
void conftest_shrinker_alloc(void) {
shrinker_alloc();
}"
compile_check_conftest "$CODE" "NV_SHRINKER_ALLOC_PRESENT" "" "functions"
;;
snd_soc_card_jack_new_has_no_snd_soc_jack_pins)
#
# Determine if the function snd_soc_card_jack_new() has 'pins' and