diff options
| author | Jiri Olsa <jolsa@kernel.org> | 2016-10-10 09:26:33 +0200 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2016-10-24 11:07:33 -0300 |
| commit | 02bc11de567273da8ab25c54336ddbb71986f38f (patch) | |
| tree | 2356fcbb1ad8571a14e61ca58575a752c3de6c2c /tools/include/linux/bitops.h | |
| parent | fe316723a8106c7527710ae7085a1dc6a9c1ab05 (diff) | |
tools lib: Add for_each_clear_bit macro
Adding for_each_clear_bit macro plus all its the necessary backbone
functions. Taken from related kernel code. It will be used in following
patch.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-cayv2zbqi0nlmg5sjjxs1775@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/include/linux/bitops.h')
| -rw-r--r-- | tools/include/linux/bitops.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/tools/include/linux/bitops.h b/tools/include/linux/bitops.h index 49c929a104ee..fc446343ff41 100644 --- a/tools/include/linux/bitops.h +++ b/tools/include/linux/bitops.h @@ -39,6 +39,11 @@ extern unsigned long __sw_hweight64(__u64 w); (bit) < (size); \ (bit) = find_next_bit((addr), (size), (bit) + 1)) +#define for_each_clear_bit(bit, addr, size) \ + for ((bit) = find_first_zero_bit((addr), (size)); \ + (bit) < (size); \ + (bit) = find_next_zero_bit((addr), (size), (bit) + 1)) + /* same as for_each_set_bit() but use bit as value to start with */ #define for_each_set_bit_from(bit, addr, size) \ for ((bit) = find_next_bit((addr), (size), (bit)); \ |