mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-21 09:24:37 +07:00
850f8127fa
Adding implementation os bitmap_or function to the bitmap object. It is stolen from the kernel lib/bitmap.o object. It is used in upcomming patches. Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1327674868-10486-5-git-send-email-jolsa@redhat.com Signed-off-by: Jiri Olsa <jolsa@redhat.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
32 lines
699 B
C
32 lines
699 B
C
/*
|
|
* From lib/bitmap.c
|
|
* Helper functions for bitmap.h.
|
|
*
|
|
* This source code is licensed under the GNU General Public License,
|
|
* Version 2. See the file COPYING for more details.
|
|
*/
|
|
#include <linux/bitmap.h>
|
|
|
|
int __bitmap_weight(const unsigned long *bitmap, int bits)
|
|
{
|
|
int k, w = 0, lim = bits/BITS_PER_LONG;
|
|
|
|
for (k = 0; k < lim; k++)
|
|
w += hweight_long(bitmap[k]);
|
|
|
|
if (bits % BITS_PER_LONG)
|
|
w += hweight_long(bitmap[k] & BITMAP_LAST_WORD_MASK(bits));
|
|
|
|
return w;
|
|
}
|
|
|
|
void __bitmap_or(unsigned long *dst, const unsigned long *bitmap1,
|
|
const unsigned long *bitmap2, int bits)
|
|
{
|
|
int k;
|
|
int nr = BITS_TO_LONGS(bits);
|
|
|
|
for (k = 0; k < nr; k++)
|
|
dst[k] = bitmap1[k] | bitmap2[k];
|
|
}
|