From: Tom Caputi <tcaputi@datto.com>
Date: Thu, 14 Jul 2016 19:51:24 +0000 (-0400)
Subject: Added highbit() and lowbit() macros
X-Git-Tag: zfs-0.8.0-rc1~152^2~89
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=d2f97b2a2651d8e1a6e9e1dcb07cfe8570efcfff;p=zfs

Added highbit() and lowbit() macros

Signed-off-by: Tom Caputi <tcaputi@datto.com>
Signed-off-by: Tony Hutter <hutter2@llnl.gov>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #562
---

diff --git a/include/sys/sysmacros.h b/include/sys/sysmacros.h
index 4a96e075f..f6b1e28e8 100644
--- a/include/sys/sysmacros.h
+++ b/include/sys/sysmacros.h
@@ -158,6 +158,9 @@ extern uint32_t zone_get_hostid(void *zone);
 extern void spl_setup(void);
 extern void spl_cleanup(void);
 
+#define	highbit(x)		__fls(x)
+#define	lowbit(x)		__ffs(x)
+
 #define	highbit64(x)		fls64(x)
 #define	makedevice(maj,min)	makedev(maj,min)