lib: Move mathematic helpers to separate folder
For better maintenance and expansion move the mathematic helpers to the
separate folder.
No functional change intended.
Note, the int_sqrt() is not used as a part of lib, so, moved to regular
obj.
Link: http://lkml.kernel.org/r/20190323172531.80025-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Lee Jones <lee.jones@linaro.org>
Cc: Daniel Thompson <daniel.thompson@linaro.org>
Cc: Ray Jui <rjui@broadcom.com>
[mchehab+samsung@kernel.org: fix broken doc references for div64.c and gcd.c]
Link: http://lkml.kernel.org/r/734f49bae5d4052b3c25691dfefad59bea2e5843.1555580999.git.mchehab+samsung@kernel.org
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/Documentation/core-api/kernel-api.rst b/Documentation/core-api/kernel-api.rst
index 71f5d2f..a29c99d 100644
--- a/Documentation/core-api/kernel-api.rst
+++ b/Documentation/core-api/kernel-api.rst
@@ -147,10 +147,10 @@
.. kernel-doc:: include/linux/math64.h
:internal:
-.. kernel-doc:: lib/div64.c
+.. kernel-doc:: lib/math/div64.c
:functions: div_s64_rem div64_u64_rem div64_u64 div64_s64
-.. kernel-doc:: lib/gcd.c
+.. kernel-doc:: lib/math/gcd.c
:export:
UUID/GUID
diff --git a/lib/Kconfig b/lib/Kconfig
index f323b85..3577609 100644
--- a/lib/Kconfig
+++ b/lib/Kconfig
@@ -46,9 +46,6 @@
This option enables the use of hardware bit-reversal instructions on
architectures which support such operations.
-config RATIONAL
- bool
-
config GENERIC_STRNCPY_FROM_USER
bool
@@ -61,6 +58,8 @@
config GENERIC_FIND_FIRST_BIT
bool
+source "lib/math/Kconfig"
+
config NO_GENERIC_PCI_IOPORT_MAP
bool
@@ -531,12 +530,6 @@
config CLZ_TAB
bool
-config CORDIC
- tristate "CORDIC algorithm"
- help
- This option provides an implementation of the CORDIC algorithm;
- calculations are in fixed point. Module will be called cordic.
-
config DDR
bool "JEDEC DDR data"
help
@@ -628,9 +621,6 @@
config PARMAN
tristate "parman" if COMPILE_TEST
-config PRIME_NUMBERS
- tristate
-
config STRING_SELFTEST
tristate "Test string functions"
diff --git a/lib/Makefile b/lib/Makefile
index 83d7df2..fb76970 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -30,7 +30,7 @@
lib-y := ctype.o string.o vsprintf.o cmdline.o \
rbtree.o radix-tree.o timerqueue.o xarray.o \
- idr.o int_sqrt.o extable.o \
+ idr.o extable.o \
sha1.o chacha.o irq_regs.o argv_split.o \
flex_proportions.o ratelimit.o show_mem.o \
is_single_threaded.o plist.o decompress.o kobject_uevent.o \
@@ -44,11 +44,11 @@
lib-y += kobject.o klist.o
obj-y += lockref.o
-obj-y += bcd.o div64.o sort.o parser.o debug_locks.o random32.o \
+obj-y += bcd.o sort.o parser.o debug_locks.o random32.o \
bust_spinlocks.o kasprintf.o bitmap.o scatterlist.o \
- gcd.o lcm.o list_sort.o uuid.o iov_iter.o clz_ctz.o \
+ list_sort.o uuid.o iov_iter.o clz_ctz.o \
bsearch.o find_bit.o llist.o memweight.o kfifo.o \
- percpu-refcount.o rhashtable.o reciprocal_div.o \
+ percpu-refcount.o rhashtable.o \
once.o refcount.o usercopy.o errseq.o bucket_locks.o \
generic-radix-tree.o
obj-$(CONFIG_STRING_SELFTEST) += test_string.o
@@ -102,6 +102,8 @@
obj-$(CONFIG_DEBUG_INFO_REDUCED) += debug_info.o
CFLAGS_debug_info.o += $(call cc-option, -femit-struct-debug-detailed=any)
+obj-y += math/
+
obj-$(CONFIG_GENERIC_IOMAP) += iomap.o
obj-$(CONFIG_GENERIC_PCI_IOMAP) += pci_iomap.o
obj-$(CONFIG_HAS_IOMEM) += iomap_copy.o devres.o
@@ -121,7 +123,6 @@
obj-$(CONFIG_BITREVERSE) += bitrev.o
obj-$(CONFIG_PACKING) += packing.o
-obj-$(CONFIG_RATIONAL) += rational.o
obj-$(CONFIG_CRC_CCITT) += crc-ccitt.o
obj-$(CONFIG_CRC16) += crc16.o
obj-$(CONFIG_CRC_T10DIF)+= crc-t10dif.o
@@ -195,8 +196,6 @@
obj-$(CONFIG_CPU_RMAP) += cpu_rmap.o
-obj-$(CONFIG_CORDIC) += cordic.o
-
obj-$(CONFIG_DQL) += dynamic_queue_limits.o
obj-$(CONFIG_GLOB) += glob.o
@@ -238,8 +237,6 @@
obj-$(CONFIG_FONT_SUPPORT) += fonts/
-obj-$(CONFIG_PRIME_NUMBERS) += prime_numbers.o
-
hostprogs-y := gen_crc32table
hostprogs-y += gen_crc64table
clean-files := crc32table.h
diff --git a/lib/math/Kconfig b/lib/math/Kconfig
new file mode 100644
index 0000000..73bdf37
--- /dev/null
+++ b/lib/math/Kconfig
@@ -0,0 +1,11 @@
+config CORDIC
+ tristate "CORDIC algorithm"
+ help
+ This option provides an implementation of the CORDIC algorithm;
+ calculations are in fixed point. Module will be called cordic.
+
+config PRIME_NUMBERS
+ tristate
+
+config RATIONAL
+ bool
diff --git a/lib/math/Makefile b/lib/math/Makefile
new file mode 100644
index 0000000..b758784
--- /dev/null
+++ b/lib/math/Makefile
@@ -0,0 +1,5 @@
+obj-y += div64.o gcd.o lcm.o int_sqrt.o reciprocal_div.o
+
+obj-$(CONFIG_CORDIC) += cordic.o
+obj-$(CONFIG_PRIME_NUMBERS) += prime_numbers.o
+obj-$(CONFIG_RATIONAL) += rational.o
diff --git a/lib/cordic.c b/lib/math/cordic.c
similarity index 100%
rename from lib/cordic.c
rename to lib/math/cordic.c
diff --git a/lib/div64.c b/lib/math/div64.c
similarity index 99%
rename from lib/div64.c
rename to lib/math/div64.c
index ee146bb..368ca7f 100644
--- a/lib/div64.c
+++ b/lib/math/div64.c
@@ -10,7 +10,7 @@
* Generic C version of 64bit/32bit division and modulo, with
* 64bit result and 32bit remainder.
*
- * The fast case for (n>>32 == 0) is handled inline by do_div().
+ * The fast case for (n>>32 == 0) is handled inline by do_div().
*
* Code generated for this function might be very inefficient
* for some CPUs. __div64_32() can be overridden by linking arch-specific
diff --git a/lib/gcd.c b/lib/math/gcd.c
similarity index 100%
rename from lib/gcd.c
rename to lib/math/gcd.c
diff --git a/lib/int_sqrt.c b/lib/math/int_sqrt.c
similarity index 100%
rename from lib/int_sqrt.c
rename to lib/math/int_sqrt.c
diff --git a/lib/lcm.c b/lib/math/lcm.c
similarity index 100%
rename from lib/lcm.c
rename to lib/math/lcm.c
diff --git a/lib/prime_numbers.c b/lib/math/prime_numbers.c
similarity index 100%
rename from lib/prime_numbers.c
rename to lib/math/prime_numbers.c
diff --git a/lib/rational.c b/lib/math/rational.c
similarity index 100%
rename from lib/rational.c
rename to lib/math/rational.c
diff --git a/lib/reciprocal_div.c b/lib/math/reciprocal_div.c
similarity index 100%
rename from lib/reciprocal_div.c
rename to lib/math/reciprocal_div.c