mirrors/scst
1
0
Fork 0
mirror of https://github.com/SCST-project/scst.git synced 2026-05-14 09:11:27 +00:00
Code Issues Packages Projects Releases Wiki Activity

scst_mem: Port to Linux kernel v6.7

Browse Source 
Support for the following mm layer changes in the Linux kernel v6.7:

- c42d50aefd17 ("mm: shrinker: add infrastructure for dynamically
  allocating shrinker")
This commit is contained in:
Gleb Chesnokov
2023-12-27 17:47:34 +03:00
parent 4c0fb04aba
commit fd88df1e25
2 changed files with 43 additions and 13 deletions
Download Patch File Download Diff File Expand all files Collapse all files

54
scst/src/scst_mem.c
View File

@@ -78,7 +78,11 @@ static atomic_t sgv_releases_on_hiwmk_failed = ATOMIC_INIT(0);
static atomic_t sgv_other_total_alloc = ATOMIC_INIT(0);
#endif
#if LINUX_VERSION_CODE < KERNEL_VERSION(6, 7, 0)
static struct shrinker sgv_shrinker;
#else
static struct shrinker *sgv_shrinker;
#endif
static struct kmem_cache *sgv_pool_cachep;
@@ -1711,8 +1715,43 @@ void sgv_pool_del(struct sgv_pool *pool)
}
EXPORT_SYMBOL_GPL(sgv_pool_del);
static int __init scst_sgv_shrinker_init(void)
{
#if LINUX_VERSION_CODE < KERNEL_VERSION(6, 7, 0)
#if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 12, 0)
sgv_shrinker.count_objects = sgv_can_be_shrunk;
sgv_shrinker.scan_objects = sgv_scan_shrink;
#else
sgv_shrinker.shrink = sgv_shrink;
#endif
sgv_shrinker.seeks = DEFAULT_SEEKS;
return register_shrinker(&sgv_shrinker, "scst-sgv");
#else
sgv_shrinker = shrinker_alloc(0, "scst-sgv");
if (unlikely(!sgv_shrinker))
return -ENOMEM;
sgv_shrinker->count_objects = sgv_can_be_shrunk;
sgv_shrinker->scan_objects = sgv_scan_shrink;
shrinker_register(sgv_shrinker);
return 0;
#endif
}
static void scst_sgv_shrinker_exit(void)
{
#if LINUX_VERSION_CODE < KERNEL_VERSION(6, 7, 0)
unregister_shrinker(&sgv_shrinker);
#else
shrinker_free(sgv_shrinker);
#endif
}
/* Both parameters in pages */
int scst_sgv_pools_init(unsigned long mem_hwmark, unsigned long mem_lwmark)
int __init scst_sgv_pools_init(unsigned long mem_hwmark, unsigned long mem_lwmark)
{
int res = 0, i;
@@ -1791,15 +1830,7 @@ int scst_sgv_pools_init(unsigned long mem_hwmark, unsigned long mem_lwmark)
goto out_free_per_cpu_dma;
}
#if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 12, 0)
sgv_shrinker.count_objects = sgv_can_be_shrunk;
sgv_shrinker.scan_objects = sgv_scan_shrink;
#else
sgv_shrinker.shrink = sgv_shrink;
#endif
sgv_shrinker.seeks = DEFAULT_SEEKS;
res = register_shrinker(&sgv_shrinker, "scst-sgv");
res = scst_sgv_shrinker_init();
if (unlikely(res))
goto out_free_per_cpu_dma;
@@ -1841,7 +1872,7 @@ void scst_sgv_pools_deinit(void)
TRACE_ENTRY();
unregister_shrinker(&sgv_shrinker);
scst_sgv_shrinker_exit();
sgv_pool_destroy(sgv_dma_pool_main);
for (i = 0; i < nr_cpu_ids; i++)
@@ -1870,7 +1901,6 @@ void scst_sgv_pools_deinit(void)
return;
}
static ssize_t sgv_sysfs_stat_show(struct kobject *kobj,
struct kobj_attribute *attr, char *buf)
{

2
scst/src/scst_mem.h
View File

@@ -138,7 +138,7 @@ static inline struct scatterlist *sgv_pool_sg(struct sgv_pool_obj *obj)
return obj->sg_entries;
}
int scst_sgv_pools_init(unsigned long mem_hwmark, unsigned long mem_lwmark);
int __init scst_sgv_pools_init(unsigned long mem_hwmark, unsigned long mem_lwmark);
void scst_sgv_pools_deinit(void);