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| author | Tim Abbott <tabbott@ksplice.com> | 2011-04-14 20:00:19 +0200 |
|---|---|---|
| committer | Rusty Russell <rusty@rustcorp.com.au> | 2011-05-19 16:55:27 +0930 |
| commit | 1a94dc35bc5c166d89913dc01a49d27a3c21a455 (patch) | |
| tree | 575196f1d0b9528b7d63b9bff692dd81e1aeac0f /lib/Makefile | |
| parent | f02e8a6596b7dc9b2171f7ff5654039ef0950cdc (diff) | |
| download | lwn-1a94dc35bc5c166d89913dc01a49d27a3c21a455.tar.gz lwn-1a94dc35bc5c166d89913dc01a49d27a3c21a455.zip | |
lib: Add generic binary search function to the kernel.
There a large number hand-coded binary searches in the kernel (run
"git grep search | grep binary" to find many of them). Since in my
experience, hand-coding binary searches can be error-prone, it seems
worth cleaning this up by providing a generic binary search function.
This generic binary search implementation comes from Ksplice. It has
the same basic API as the C library bsearch() function. Ksplice uses
it in half a dozen places with 4 different comparison functions, and I
think our code is substantially cleaner because of this.
Signed-off-by: Tim Abbott <tabbott@ksplice.com>
Extra-bikeshedding-by: Alan Jenkins <alan-jenkins@tuffmail.co.uk>
Extra-bikeshedding-by: André Goddard Rosa <andre.goddard@gmail.com>
Extra-bikeshedding-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Alessio Igor Bogani <abogani@kernel.org>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Diffstat (limited to 'lib/Makefile')
| -rw-r--r-- | lib/Makefile | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/Makefile b/lib/Makefile index ef0f28571156..4b49a249064b 100644 --- a/lib/Makefile +++ b/lib/Makefile @@ -21,7 +21,8 @@ lib-y += kobject.o kref.o klist.o obj-y += bcd.o div64.o sort.o parser.o halfmd4.o debug_locks.o random32.o \ bust_spinlocks.o hexdump.o kasprintf.o bitmap.o scatterlist.o \ - string_helpers.o gcd.o lcm.o list_sort.o uuid.o flex_array.o + string_helpers.o gcd.o lcm.o list_sort.o uuid.o flex_array.o \ + bsearch.o obj-y += kstrtox.o obj-$(CONFIG_TEST_KSTRTOX) += test-kstrtox.o |