Add helpers for checking alignment to util/size.h.
Signed-off-by: Dan Williams <[email protected]>
---
ndctl/lib/ars.c | 6 +-----
util/size.h | 7 +++++++
2 files changed, 8 insertions(+), 5 deletions(-)
diff --git a/ndctl/lib/ars.c b/ndctl/lib/ars.c
index bd75131081ba..d91a99d00d10 100644
--- a/ndctl/lib/ars.c
+++ b/ndctl/lib/ars.c
@@ -11,6 +11,7 @@
* more details.
*/
#include <stdlib.h>
+#include <util/size.h>
#include <ndctl/libndctl.h>
#include "private.h"
@@ -43,11 +44,6 @@ NDCTL_EXPORT struct ndctl_cmd
*ndctl_bus_cmd_new_ars_cap(struct ndctl_bus *bus,
return cmd;
}
-static bool is_power_of_2(unsigned int v)
-{
- return v && ((v & (v - 1)) == 0);
-}
-
static bool validate_clear_error(struct ndctl_cmd *ars_cap)
{
if (!is_power_of_2(ars_cap->ars_cap->clear_err_unit))
diff --git a/util/size.h b/util/size.h
index 34fac58d6945..2f36c2c85ca7 100644
--- a/util/size.h
+++ b/util/size.h
@@ -13,6 +13,7 @@
#ifndef _NDCTL_SIZE_H_
#define _NDCTL_SIZE_H_
+#include <stdbool.h>
#define SZ_1K 0x00000400
#define SZ_4K 0x00001000
@@ -27,8 +28,14 @@
unsigned long long parse_size64(const char *str);
unsigned long long __parse_size64(const char *str, unsigned long long *units);
+static inline bool is_power_of_2(unsigned long long v)
+{
+ return v && ((v & (v - 1)) == 0);
+}
+
#define ALIGN(x, a) ((((unsigned long long) x) + (a - 1)) & ~(a - 1))
#define ALIGN_DOWN(x, a) (((((unsigned long long) x) + a) & ~(a - 1)) - a)
+#define IS_ALIGNED(x, a) (((x) & ((typeof(x))(a) - 1)) == 0)
#define BITS_PER_LONG (sizeof(unsigned long) * 8)
#define HPAGE_SIZE (2 << 20)
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