Use bitmap_weight to count the total number of bits set in bitmap.
This change just simplifies the code a bit.
Signed-off-by: Akinobu Mita <akinobu.m...@gmail.com>
Cc: Tony Luck <tony.l...@intel.com>
Cc: Fenghua Yu <fenghua...@intel.com>
Cc: linux-i...@vger.kernel.org
---
arch/ia64/hp/common/sba_iommu.c | 9 ++++-----
1 file changed, 4 insertions(+), 5 deletions(-)
diff --git a/arch/ia64/hp/common/sba_iommu.c b/arch/ia64/hp/common/sba_iommu.c
index 344387a..9c944fa 100644
--- a/arch/ia64/hp/common/sba_iommu.c
+++ b/arch/ia64/hp/common/sba_iommu.c
@@ -33,7 +33,7 @@
#include <linux/acpi.h>
#include <linux/efi.h>
#include <linux/nodemask.h>
-#include <linux/bitops.h> /* hweight64() */
+#include <linux/bitmap.h> /* bitmap_weight() */
#include <linux/crash_dump.h>
#include <linux/iommu-helper.h>
#include <linux/dma-mapping.h>
@@ -1901,8 +1901,7 @@ static int
ioc_show(struct seq_file *s, void *v)
{
struct ioc *ioc = v;
- unsigned long *res_ptr = (unsigned long *)ioc->res_map;
- int i, used = 0;
+ int used;
seq_printf(s, "Hewlett Packard %s IOC rev %d.%d\n",
ioc->name, ((ioc->rev >> 4) & 0xF), (ioc->rev & 0xF));
@@ -1913,8 +1912,8 @@ ioc_show(struct seq_file *s, void *v)
seq_printf(s, "IOVA size : %ld MB\n", ((ioc->pdir_size >> 3) *
iovp_size)/(1024*1024));
seq_printf(s, "IOVA page size : %ld kb\n", iovp_size/1024);
- for (i = 0; i < (ioc->res_size / sizeof(unsigned long)); ++i, ++res_ptr)
- used += hweight64(*res_ptr);
+ used = bitmap_weight((unsigned long *)ioc->res_map,
+ ioc->res_size * BITS_PER_BYTE);
seq_printf(s, "PDIR size : %d entries\n", ioc->pdir_size >> 3);
seq_printf(s, "PDIR used : %d entries\n", used);
--
1.9.1
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