| commit | a2e92be0bd1e4b4c34b52e413dee30efa204d1d6 | |
| author | Linus Torvalds <torvalds@linux-foundation.org> | |
| Fri, 21 Aug 2009 16:26:15 +0000 (21 09:26 -0700) | ||
| committer | Greg Kroah-Hartman <gregkh@suse.de> | |
| Wed, 9 Sep 2009 03:33:14 +0000 (8 20:33 -0700) | ||
| tree | 49938f94c6a13bd5b279741546a1c32f4a228aaa | treesnapshot (tar.gz zip) |
| parent | 5638301d05015b68a5577bdf9c61813b3839fa1c | commitdiff |
Make bitmask 'and' operators return a result code
commit f4b0373b26567cafd421d91101852ed7a34e9e94 upstream.
When 'and'ing two bitmasks (where 'andnot' is a variation on it), some
cases want to know whether the result is the empty set or not. In
particular, the TLB IPI sending code wants to do cpumask operations and
determine if there are any CPU's left in the final set.
So this just makes the bitmask (and cpumask) functions return a boolean
for whether the result has any bits set.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
commit f4b0373b26567cafd421d91101852ed7a34e9e94 upstream.
When 'and'ing two bitmasks (where 'andnot' is a variation on it), some
cases want to know whether the result is the empty set or not. In
particular, the TLB IPI sending code wants to do cpumask operations and
determine if there are any CPU's left in the final set.
So this just makes the bitmask (and cpumask) functions return a boolean
for whether the result has any bits set.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| include/linux/bitmap.h | diffblobblamehistory | |
| include/linux/cpumask.h | diffblobblamehistory | |
| lib/bitmap.c | diffblobblamehistory |