LU-9859 libcfs: move tgt_descs to standard Linux bitmaps.

[fs/lustre-release.git] / libcfs / autoconf / lustre-libcfs.m4

diff --git a/libcfs/autoconf/lustre-libcfs.m4 b/libcfs/autoconf/lustre-libcfs.m4
index 5992d2a..b42c9a7 100644 (file)
--- a/libcfs/autoconf/lustre-libcfs.m4
+++ b/libcfs/autoconf/lustre-libcfs.m4
@@ -219,6 +219,26 @@ EXTRA_KCFLAGS="$tmp_flags"
 ]) # LIBCFS_IOV_ITER_HAS_TYPE
 
 #
+# LIBCFS_HAVE_NS_TO_TIMESPEC64
+#
+# Kernel version 4.16-rc3 commit a84d1169164b274f13b97a23ff235c000efe3b49
+# introduced struct __kernel_old_timeval
+#
+AC_DEFUN([LIBCFS_HAVE_NS_TO_TIMESPEC64],[
+LB_CHECK_COMPILE([does 'ns_to_timespec64()' exist],
+kernel_old_timeval, [
+       #include <linux/time.h>
+],[
+       struct timespec64 kts;
+
+       kts = ns_to_timespec64(0);
+],[
+       AC_DEFINE(HAVE_NS_TO_TIMESPEC64, 1,
+               [ns_to_timespec64() is available])
+])
+]) # LIBCFS_HAVE_NS_TO_TIMESPEC64
+
+#
 # Kernel version 3.17 changed hlist_add_after to
 # hlist_add_behind
 #
@@ -733,12 +753,33 @@ cpu_hotplug_state_machine, [
 # introduced refcount_t which is atomic_t plus over flow guards.
 #
 AC_DEFUN([LIBCFS_REFCOUNT_T], [
+tmp_flags="$EXTRA_KCFLAGS"
+EXTRA_KCFLAGS="-Werror"
 LB_CHECK_LINUX_HEADER([linux/refcount.h], [
        AC_DEFINE(HAVE_REFCOUNT_T, 1,
-               [refcount_t is supported])])
+               [refcount_t is supported])
+])
+EXTRA_KCFLAGS="$tmp_flags"
 ]) # LIBCFS_REFCOUNT_T
 
 #
+# Kernel version 4.12 commit 499118e966f1d2150bd66647c8932343c4e9a0b8
+# introduce memalloc_noreclaim_{save,restore}
+#
+AC_DEFUN([LIBCFS_MEMALLOC_NORECLAIM], [
+LB_CHECK_COMPILE([if memalloc_noreclaim_{save,restore} exist],
+memalloc_noreclaim, [
+       #include <linux/sched/mm.h>
+],[
+       int flag = memalloc_noreclaim_save();
+       memalloc_noreclaim_restore(flag);
+],[
+       AC_DEFINE(HAVE_MEMALLOC_RECLAIM, 1,
+               [memalloc_noreclaim_{save,restore}() is supported])
+])
+]) # LIBCFS_MEMALLOC_NORECLAIM
+
+#
 # LIBCFS_SCHED_HEADERS
 #
 # 4.11 has broken up sched.h into more headers.
@@ -813,7 +854,7 @@ cpu_read_lock, [
        cpus_read_lock();
        cpus_read_unlock();
 ],[
-       AC_DEFINE(HAVE_CPUS_READ_LOCK, 1, ['cpu_read_lock' exist])
+       AC_DEFINE(HAVE_CPUS_READ_LOCK, 1, ['cpus_read_lock' exist])
 ])
 ]) # LIBCFS_CPUS_READ_LOCK
 
@@ -839,9 +880,13 @@ uuid_t, [
 # introduce processor.h
 #
 AC_DEFUN([LIBCFS_HAVE_PROCESSOR_HEADER], [
+tmp_flags="$EXTRA_KCFLAGS"
+EXTRA_KCFLAGS="-Werror"
 LB_CHECK_LINUX_HEADER([linux/processor.h], [
        AC_DEFINE(HAVE_PROCESSOR_H, 1,
-               [processor.h is present])])
+               [processor.h is present])
+])
+EXTRA_KCFLAGS="$tmp_flags"
 ]) # LIBCFS_HAVE_PROCESSOR_HEADER
 
 #
@@ -1040,6 +1085,24 @@ wait_var_event, [
 ]) # LIBCFS_WAIT_VAR_EVENT
 
 #
+# LIBCFS_BITMAP_ALLOC
+#
+# Kernel version 4.17 commit c42b65e363ce97a828f81b59033c3558f8fa7f70
+# added bitmap memory allocation handling.
+#
+AC_DEFUN([LIBCFS_BITMAP_ALLOC], [
+LB_CHECK_COMPILE([if Linux bitmap memory management exist],
+bitmap_alloc, [
+       #include <linux/bitmap.h>
+],[
+       unsigned long *map = bitmap_alloc(1, GFP_KERNEL);
+],[
+       AC_DEFINE(HAVE_BITMAP_ALLOC, 1,
+               [Linux bitmap can be allocated])
+])
+]) # LIBCFS_BITMAP_ALLOC
+
+#
 # LIBCFS_CLEAR_AND_WAKE_UP_BIT
 #
 # Kernel version 4.17-rc2 commit 8236b0ae31c837d2b3a2565c5f8d77f637e824cc
@@ -1061,6 +1124,28 @@ clear_and_wake_up_bit, [
 ]) # LIBCFS_CLEAR_AND_WAKE_UP_BIT
 
 #
+# LIBCFS_XARRAY_SUPPORT
+#
+# 4.19-rc5 kernel commit 3159f943aafdbacb2f94c38fdaadabf2bbde2a14
+# replaced the radix tree implementation with Xarrays. This change
+# introduced functionaly needed for general Xarray support
+#
+AC_DEFUN([LIBCFS_XARRAY_SUPPORT], [
+tmp_flags="$EXTRA_KCFLAGS"
+EXTRA_KCFLAGS="-Werror"
+LB_CHECK_COMPILE([if page cache uses Xarray],
+xarray_support, [
+       #include <linux/radix-tree.h>
+],[
+       radix_tree_exceptional_entry(NULL);
+],[
+       AC_DEFINE(HAVE_RADIX_TREE_EXCEPTIONAL_ENTRY, 1,
+               [kernel lacks 'xa_is_value'])
+])
+EXTRA_KCFLAGS="$tmp_flags"
+]) # LIBCFS_XARRAY_SUPPORT
+
+#
 # LIBCFS_HAVE_IOV_ITER_TYPE
 #
 # kernel 4.20 commit 00e23707442a75b404392cef1405ab4fd498de6b
@@ -1192,6 +1277,8 @@ Lustre requires that CONFIG_CRYPTO_CRC32 is enabled in your kernel.
 ])])
 ]) # LIBCFS_CONFIG_CRYPTO_CRC32
 
+AC_DEFUN([LIBCFS_PROG_LINUX_SRC], [] )
+AC_DEFUN([LIBCFS_PROG_LINUX_RESULTS], [])
 
 #
 # LIBCFS_PROG_LINUX
@@ -1216,6 +1303,8 @@ LIBCFS_KTIME_COMPARE
 LIBCFS_SHRINKER_COUNT
 # 3.15
 LIBCFS_IOV_ITER_HAS_TYPE
+# 3.16
+LIBCFS_HAVE_NS_TO_TIMESPEC64
 # 3.17
 LIBCFS_HLIST_ADD_AFTER
 LIBCFS_TIMESPEC64
@@ -1266,6 +1355,7 @@ LIBCFS_RHT_BUCKET_VAR
 # 4.12
 LIBCFS_HAVE_PROCESSOR_HEADER
 LIBCFS_HAVE_WAIT_BIT_HEADER
+LIBCFS_MEMALLOC_NORECLAIM
 LIBCFS_WAIT_QUEUE_TASK_LIST_RENAME
 LIBCFS_CPUS_READ_LOCK
 LIBCFS_UUID_T
@@ -1281,7 +1371,10 @@ LIBCFS_TIMER_SETUP
 # 4.16
 LIBCFS_WAIT_VAR_EVENT
 # 4.17
+LIBCFS_BITMAP_ALLOC
 LIBCFS_CLEAR_AND_WAKE_UP_BIT
+# 4.19
+LIBCFS_XARRAY_SUPPORT
 # 4.20
 LIBCFS_HAVE_IOV_ITER_TYPE
 # 5.0
@@ -1368,11 +1461,15 @@ libcfs/autoMakefile
 libcfs/autoconf/Makefile
 libcfs/include/Makefile
 libcfs/include/libcfs/Makefile
+libcfs/include/uapi/Makefile
 libcfs/include/libcfs/linux/Makefile
 libcfs/include/libcfs/util/Makefile
+libcfs/include/libcfs/crypto/Makefile
+libcfs/include/uapi/linux/Makefile
 libcfs/libcfs/Makefile
 libcfs/libcfs/autoMakefile
 libcfs/libcfs/linux/Makefile
 libcfs/libcfs/util/Makefile
+libcfs/libcfs/crypto/Makefile
 ])
 ]) # LIBCFS_CONFIG_FILES