diff options
Diffstat (limited to 'config/kernel-shrink.m4')
| -rw-r--r-- | config/kernel-shrink.m4 | 219 |
1 files changed, 128 insertions, 91 deletions
diff --git a/config/kernel-shrink.m4 b/config/kernel-shrink.m4 index 405cbf42c..45b4b5d4b 100644 --- a/config/kernel-shrink.m4 +++ b/config/kernel-shrink.m4 @@ -4,9 +4,8 @@ dnl # The super_block structure now stores a per-filesystem shrinker. dnl # This interface is preferable because it can be used to specifically dnl # target only the zfs filesystem for pruning. dnl # -AC_DEFUN([ZFS_AC_KERNEL_SHRINK], [ - AC_MSG_CHECKING([whether super_block has s_shrink]) - ZFS_LINUX_TRY_COMPILE([ +AC_DEFUN([ZFS_AC_KERNEL_SRC_SUPER_BLOCK_S_SHRINK], [ + ZFS_LINUX_TEST_SRC([super_block_s_shrink], [ #include <linux/fs.h> int shrink(struct shrinker *s, struct shrink_control *sc) @@ -18,8 +17,12 @@ AC_DEFUN([ZFS_AC_KERNEL_SHRINK], [ .s_shrink.seeks = DEFAULT_SEEKS, .s_shrink.batch = 0, }; - ],[ - ],[ + ],[]) +]) + +AC_DEFUN([ZFS_AC_KERNEL_SUPER_BLOCK_S_SHRINK], [ + AC_MSG_CHECKING([whether super_block has s_shrink]) + ZFS_LINUX_TEST_RESULT([super_block_s_shrink], [ AC_MSG_RESULT(yes) AC_DEFINE(HAVE_SHRINK, 1, [struct super_block has s_shrink]) @@ -50,15 +53,18 @@ dnl # a list_head is used. Then to prevent the spinning from occurring dnl # the .next pointer is set to the fs_supers list_head which ensures dnl # the iterate_supers_type() function will always terminate. dnl # -AC_DEFUN([ZFS_AC_KERNEL_S_INSTANCES_LIST_HEAD], [ - AC_MSG_CHECKING([whether super_block has s_instances list_head]) - ZFS_LINUX_TRY_COMPILE([ +AC_DEFUN([ZFS_AC_KERNEL_SRC_SUPER_BLOCK_S_INSTANCES_LIST_HEAD], [ + ZFS_LINUX_TEST_SRC([super_block_s_instances_list_head], [ #include <linux/fs.h> ],[ struct super_block sb __attribute__ ((unused)); - INIT_LIST_HEAD(&sb.s_instances); - ],[ + ]) +]) + +AC_DEFUN([ZFS_AC_KERNEL_SUPER_BLOCK_S_INSTANCES_LIST_HEAD], [ + AC_MSG_CHECKING([whether super_block has s_instances list_head]) + ZFS_LINUX_TEST_RESULT([super_block_s_instances_list_head], [ AC_MSG_RESULT(yes) AC_DEFINE(HAVE_S_INSTANCES_LIST_HEAD, 1, [struct super_block has s_instances list_head]) @@ -67,9 +73,8 @@ AC_DEFUN([ZFS_AC_KERNEL_S_INSTANCES_LIST_HEAD], [ ]) ]) -AC_DEFUN([ZFS_AC_KERNEL_NR_CACHED_OBJECTS], [ - AC_MSG_CHECKING([whether sops->nr_cached_objects() exists]) - ZFS_LINUX_TRY_COMPILE([ +AC_DEFUN([ZFS_AC_KERNEL_SRC_NR_CACHED_OBJECTS], [ + ZFS_LINUX_TEST_SRC([nr_cached_objects], [ #include <linux/fs.h> int nr_cached_objects(struct super_block *sb) { return 0; } @@ -78,19 +83,22 @@ AC_DEFUN([ZFS_AC_KERNEL_NR_CACHED_OBJECTS], [ sops __attribute__ ((unused)) = { .nr_cached_objects = nr_cached_objects, }; - ],[ - ],[ + ],[]) +]) + +AC_DEFUN([ZFS_AC_KERNEL_NR_CACHED_OBJECTS], [ + AC_MSG_CHECKING([whether sops->nr_cached_objects() exists]) + ZFS_LINUX_TEST_RESULT([nr_cached_objects], [ AC_MSG_RESULT(yes) AC_DEFINE(HAVE_NR_CACHED_OBJECTS, 1, - [sops->nr_cached_objects() exists]) + [sops->nr_cached_objects() exists]) ],[ AC_MSG_RESULT(no) ]) ]) -AC_DEFUN([ZFS_AC_KERNEL_FREE_CACHED_OBJECTS], [ - AC_MSG_CHECKING([whether sops->free_cached_objects() exists]) - ZFS_LINUX_TRY_COMPILE([ +AC_DEFUN([ZFS_AC_KERNEL_SRC_FREE_CACHED_OBJECTS], [ + ZFS_LINUX_TEST_SRC([free_cached_objects], [ #include <linux/fs.h> void free_cached_objects(struct super_block *sb, int x) @@ -100,11 +108,15 @@ AC_DEFUN([ZFS_AC_KERNEL_FREE_CACHED_OBJECTS], [ sops __attribute__ ((unused)) = { .free_cached_objects = free_cached_objects, }; - ],[ - ],[ + ],[]) +]) + +AC_DEFUN([ZFS_AC_KERNEL_FREE_CACHED_OBJECTS], [ + AC_MSG_CHECKING([whether sops->free_cached_objects() exists]) + ZFS_LINUX_TEST_RESULT([free_cached_objects], [ AC_MSG_RESULT(yes) AC_DEFINE(HAVE_FREE_CACHED_OBJECTS, 1, - [sops->free_cached_objects() exists]) + [sops->free_cached_objects() exists]) ],[ AC_MSG_RESULT(no) ]) @@ -115,15 +127,19 @@ dnl # 3.12 API change dnl # The nid member was added to struct shrink_control to support dnl # NUMA-aware shrinkers. dnl # -AC_DEFUN([ZFS_AC_KERNEL_SHRINK_CONTROL_HAS_NID], [ - AC_MSG_CHECKING([whether shrink_control has nid]) - ZFS_LINUX_TRY_COMPILE([ +AC_DEFUN([ZFS_AC_KERNEL_SRC_SHRINK_CONTROL_HAS_NID], [ + ZFS_LINUX_TEST_SRC([shrink_control_nid], [ #include <linux/fs.h> ],[ struct shrink_control sc __attribute__ ((unused)); unsigned long scnidsize __attribute__ ((unused)) = sizeof(sc.nid); - ],[ + ]) +]) + +AC_DEFUN([ZFS_AC_KERNEL_SHRINK_CONTROL_HAS_NID], [ + AC_MSG_CHECKING([whether shrink_control has nid]) + ZFS_LINUX_TEST_RESULT([shrink_control_nid], [ AC_MSG_RESULT(yes) AC_DEFINE(SHRINK_CONTROL_HAS_NID, 1, [struct shrink_control has nid]) @@ -132,84 +148,96 @@ AC_DEFUN([ZFS_AC_KERNEL_SHRINK_CONTROL_HAS_NID], [ ]) ]) +AC_DEFUN([ZFS_AC_KERNEL_SRC_SHRINKER_CALLBACK], [ + ZFS_LINUX_TEST_SRC([shrinker_cb_2arg], [ + #include <linux/mm.h> + int shrinker_cb(int nr_to_scan, gfp_t gfp_mask) { return 0; } + ],[ + struct shrinker cache_shrinker = { + .shrink = shrinker_cb, + .seeks = DEFAULT_SEEKS, + }; + register_shrinker(&cache_shrinker); + ]) -AC_DEFUN([ZFS_AC_KERNEL_SHRINKER_CALLBACK],[ - tmp_flags="$EXTRA_KCFLAGS" - EXTRA_KCFLAGS="-Werror" - dnl # - dnl # 2.6.23 to 2.6.34 API change - dnl # ->shrink(int nr_to_scan, gfp_t gfp_mask) - dnl # - AC_MSG_CHECKING([whether old 2-argument shrinker exists]) - ZFS_LINUX_TRY_COMPILE([ + ZFS_LINUX_TEST_SRC([shrinker_cb_3arg], [ #include <linux/mm.h> + int shrinker_cb(struct shrinker *shrink, int nr_to_scan, + gfp_t gfp_mask) { return 0; } + ],[ + struct shrinker cache_shrinker = { + .shrink = shrinker_cb, + .seeks = DEFAULT_SEEKS, + }; + register_shrinker(&cache_shrinker); + ]) - int shrinker_cb(int nr_to_scan, gfp_t gfp_mask) { - return 0; - } + ZFS_LINUX_TEST_SRC([shrinker_cb_shrink_control], [ + #include <linux/mm.h> + int shrinker_cb(struct shrinker *shrink, + struct shrink_control *sc) { return 0; } ],[ struct shrinker cache_shrinker = { .shrink = shrinker_cb, .seeks = DEFAULT_SEEKS, }; register_shrinker(&cache_shrinker); + ]) + + ZFS_LINUX_TEST_SRC([shrinker_cb_shrink_control_split], [ + #include <linux/mm.h> + unsigned long shrinker_cb(struct shrinker *shrink, + struct shrink_control *sc) { return 0; } ],[ + struct shrinker cache_shrinker = { + .count_objects = shrinker_cb, + .scan_objects = shrinker_cb, + .seeks = DEFAULT_SEEKS, + }; + register_shrinker(&cache_shrinker); + ]) +]) + +AC_DEFUN([ZFS_AC_KERNEL_SHRINKER_CALLBACK],[ + dnl # + dnl # 2.6.23 to 2.6.34 API change + dnl # ->shrink(int nr_to_scan, gfp_t gfp_mask) + dnl # + AC_MSG_CHECKING([whether old 2-argument shrinker exists]) + ZFS_LINUX_TEST_RESULT([shrinker_cb_2arg], [ AC_MSG_RESULT(yes) AC_DEFINE(HAVE_2ARGS_OLD_SHRINKER_CALLBACK, 1, - [old shrinker callback wants 2 args]) + [old shrinker callback wants 2 args]) ],[ AC_MSG_RESULT(no) + dnl # dnl # 2.6.35 - 2.6.39 API change dnl # ->shrink(struct shrinker *, dnl # int nr_to_scan, gfp_t gfp_mask) dnl # AC_MSG_CHECKING([whether old 3-argument shrinker exists]) - ZFS_LINUX_TRY_COMPILE([ - #include <linux/mm.h> - - int shrinker_cb(struct shrinker *shrink, int nr_to_scan, - gfp_t gfp_mask) { - return 0; - } - ],[ - struct shrinker cache_shrinker = { - .shrink = shrinker_cb, - .seeks = DEFAULT_SEEKS, - }; - register_shrinker(&cache_shrinker); - ],[ + ZFS_LINUX_TEST_RESULT([shrinker_cb_3arg], [ AC_MSG_RESULT(yes) AC_DEFINE(HAVE_3ARGS_SHRINKER_CALLBACK, 1, [old shrinker callback wants 3 args]) ],[ AC_MSG_RESULT(no) + dnl # dnl # 3.0 - 3.11 API change dnl # ->shrink(struct shrinker *, dnl # struct shrink_control *sc) dnl # AC_MSG_CHECKING( - [whether new 2-argument shrinker exists]) - ZFS_LINUX_TRY_COMPILE([ - #include <linux/mm.h> - - int shrinker_cb(struct shrinker *shrink, - struct shrink_control *sc) { - return 0; - } - ],[ - struct shrinker cache_shrinker = { - .shrink = shrinker_cb, - .seeks = DEFAULT_SEEKS, - }; - register_shrinker(&cache_shrinker); - ],[ + [whether new 2-argument shrinker exists]) + ZFS_LINUX_TEST_RESULT([shrinker_cb_shrink_control], [ AC_MSG_RESULT(yes) AC_DEFINE(HAVE_2ARGS_NEW_SHRINKER_CALLBACK, 1, [new shrinker callback wants 2 args]) ],[ AC_MSG_RESULT(no) + dnl # dnl # 3.12 API change, dnl # ->shrink() is logically split in to @@ -217,52 +245,61 @@ AC_DEFUN([ZFS_AC_KERNEL_SHRINKER_CALLBACK],[ dnl # AC_MSG_CHECKING( [whether ->count_objects callback exists]) - ZFS_LINUX_TRY_COMPILE([ - #include <linux/mm.h> - - unsigned long shrinker_cb( - struct shrinker *shrink, - struct shrink_control *sc) { - return 0; - } - ],[ - struct shrinker cache_shrinker = { - .count_objects = shrinker_cb, - .scan_objects = shrinker_cb, - .seeks = DEFAULT_SEEKS, - }; - register_shrinker(&cache_shrinker); - ],[ + ZFS_LINUX_TEST_RESULT( + [shrinker_cb_shrink_control_split], [ AC_MSG_RESULT(yes) AC_DEFINE(HAVE_SPLIT_SHRINKER_CALLBACK, 1, [->count_objects exists]) ],[ - AC_MSG_ERROR(error) + ZFS_LINUX_TEST_ERROR([shrinker]) ]) ]) ]) ]) - EXTRA_KCFLAGS="$tmp_flags" ]) dnl # dnl # 2.6.39 API change, dnl # Shrinker adjust to use common shrink_control structure. dnl # -AC_DEFUN([ZFS_AC_KERNEL_SHRINK_CONTROL_STRUCT], [ - AC_MSG_CHECKING([whether struct shrink_control exists]) - ZFS_LINUX_TRY_COMPILE([ +AC_DEFUN([ZFS_AC_KERNEL_SRC_SHRINK_CONTROL_STRUCT], [ + ZFS_LINUX_TEST_SRC([shrink_control_struct], [ #include <linux/mm.h> ],[ struct shrink_control sc __attribute__ ((unused)); sc.nr_to_scan = 0; sc.gfp_mask = GFP_KERNEL; - ],[ + ]) +]) + +AC_DEFUN([ZFS_AC_KERNEL_SHRINK_CONTROL_STRUCT], [ + AC_MSG_CHECKING([whether struct shrink_control exists]) + ZFS_LINUX_TEST_RESULT([shrink_control_struct], [ AC_MSG_RESULT(yes) AC_DEFINE(HAVE_SHRINK_CONTROL_STRUCT, 1, - [struct shrink_control exists]) + [struct shrink_control exists]) ],[ AC_MSG_RESULT(no) ]) ]) + +AC_DEFUN([ZFS_AC_KERNEL_SRC_SHRINKER], [ + ZFS_AC_KERNEL_SRC_SUPER_BLOCK_S_SHRINK + ZFS_AC_KERNEL_SRC_SUPER_BLOCK_S_INSTANCES_LIST_HEAD + ZFS_AC_KERNEL_SRC_NR_CACHED_OBJECTS + ZFS_AC_KERNEL_SRC_FREE_CACHED_OBJECTS + ZFS_AC_KERNEL_SRC_SHRINK_CONTROL_HAS_NID + ZFS_AC_KERNEL_SRC_SHRINKER_CALLBACK + ZFS_AC_KERNEL_SRC_SHRINK_CONTROL_STRUCT +]) + +AC_DEFUN([ZFS_AC_KERNEL_SHRINKER], [ + ZFS_AC_KERNEL_SUPER_BLOCK_S_SHRINK + ZFS_AC_KERNEL_SUPER_BLOCK_S_INSTANCES_LIST_HEAD + ZFS_AC_KERNEL_NR_CACHED_OBJECTS + ZFS_AC_KERNEL_FREE_CACHED_OBJECTS + ZFS_AC_KERNEL_SHRINK_CONTROL_HAS_NID + ZFS_AC_KERNEL_SHRINKER_CALLBACK + ZFS_AC_KERNEL_SHRINK_CONTROL_STRUCT +]) |