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Add functions and macros as used upstream.

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Added highbit64() and howmany() which are used in recent upstream
code.  Both highbit() and highbit64() should at some point be
re-factored to use the optimized fls() and fls64() functions.

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Prakash Surya <surya1@llnl.gov>
Signed-off-by: Tim Chase <tim@chase2k.com>
Closes #363
This commit is contained in:
Tim Chase
2014-04-26 20:56:03 -05:00
committed by Brian Behlendorf
parent 377e12f14a
commit 7f23e00109
2 changed files with 34 additions and 0 deletions
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include/sys/sysmacros.h
+4
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@@ -150,6 +150,7 @@ extern unsigned long spl_hostid;
/* Missing misc functions */
extern int highbit(unsigned long i);
extern int highbit64(uint64_t i);
extern uint32_t zone_get_hostid(void *zone);
extern void spl_setup(void);
extern void spl_cleanup(void);
@@ -172,6 +173,9 @@ extern void spl_cleanup(void);
#ifndef roundup
#define roundup(x, y) ((((x) + ((y) - 1)) / (y)) * (y))
#endif
#ifndef howmany
#define howmany(x, y) (((x) + ((y) - 1)) / (y))
#endif
/*
* Compatibility macros/typedefs needed for Solaris -> Linux port