[IA64] unwind: remove preprocesser noise, and correct comment

Phil Carmody · aegl · commit 747584be04bb · 2010-09-14T13:34:43.000-07:00
The expression in the comment was mis-bracketted.
There was also no need to introduce a coding-style breaking
macro for a single use, so just made it a static const.

Signed-off-by: Phil Carmody &lt;ext-phil.2.carmody@nokia.com&gt;
Signed-off-by: Tony Luck &lt;tony.luck@intel.com&gt;
diff --git a/arch/ia64/kernel/unwind.c b/arch/ia64/kernel/unwind.c
@@ -1204,10 +1204,10 @@ desc_spill_sprel_p (unsigned char qp, unw_word t, unsigned char abreg, unw_word
 static inline unw_hash_index_t
 hash (unsigned long ip)
 {
-#	define hashmagic	0x9e3779b97f4a7c16UL	/* based on (sqrt(5)/2-1)*2^64 */
+	/* magic number = ((sqrt(5)-1)/2)*2^64 */
+	static const unsigned long hashmagic = 0x9e3779b97f4a7c16UL;
 
-	return (ip >> 4)*hashmagic >> (64 - UNW_LOG_HASH_SIZE);
-#undef hashmagic
+	return (ip >> 4) * hashmagic >> (64 - UNW_LOG_HASH_SIZE);
 }
 
 static inline long

Original file line number	Diff line number	Diff line change
`@@ -1204,10 +1204,10 @@ desc_spill_sprel_p (unsigned char qp, unw_word t, unsigned char abreg, unw_word`
`1204`	`1204`	`static inline unw_hash_index_t`
`1205`	`1205`	`hash (unsigned long ip)`
`1206`	`1206`	`{`
`1207`		`-# define hashmagic 0x9e3779b97f4a7c16UL /* based on (sqrt(5)/2-1)2^64 /`
	`1207`	`+ /* magic number = ((sqrt(5)-1)/2)2^64 /`
	`1208`	`+ static const unsigned long hashmagic = 0x9e3779b97f4a7c16UL;`
`1208`	`1209`
`1209`		`- return (ip >> 4)*hashmagic >> (64 - UNW_LOG_HASH_SIZE);`
`1210`		`-#undef hashmagic`
	`1210`	`+ return (ip >> 4) * hashmagic >> (64 - UNW_LOG_HASH_SIZE);`
`1211`	`1211`	`}`
`1212`	`1212`
`1213`	`1213`	`static inline long`