[PATCH 09/12] clocksource: initialize list value

[Daniel Walker]

A change to clocksource initialization. If the list field is initialized 
it allows clocksource_register to complete faster since it doesn't have 
to scan the list of clocks doing strcmp on each looking for duplicates.

Signed-Off-By: Daniel Walker <[EMAIL PROTECTED]>

---
 kernel/time/clocksource.c |3 +--
 kernel/time/jiffies.c |1 +
 2 files changed, 2 insertions(+), 2 deletions(-)

Index: linux-2.6.19/kernel/time/clocksource.c
===
--- linux-2.6.19.orig/kernel/time/clocksource.c
+++ linux-2.6.19/kernel/time/clocksource.c
@@ -186,12 +186,11 @@ int clocksource_register(struct clocksou
unsigned long flags;
 
spin_lock_irqsave(_lock, flags);
-   if (unlikely(!list_empty(>list) && __is_registered(c->name))) {
+   if (unlikely(!list_empty(>list))) {
printk("register_clocksource: Cannot register %s clocksource. "
   "Already registered!", c->name);
ret = -EBUSY;
} else {
-   INIT_LIST_HEAD(>list);
__sorted_list_add(c);
/* scan the registered clocksources, and pick the best one */
next_clocksource = select_clocksource();
Index: linux-2.6.19/kernel/time/jiffies.c
===
--- linux-2.6.19.orig/kernel/time/jiffies.c
+++ linux-2.6.19/kernel/time/jiffies.c
@@ -63,6 +63,7 @@ struct clocksource clocksource_jiffies =
.mult   = NSEC_PER_JIFFY << JIFFIES_SHIFT, /* details above */
.shift  = JIFFIES_SHIFT,
.is_continuous  = 0, /* tick based, not free running */
+   .list   = LIST_HEAD_INIT(clocksource_jiffies.list),
 };
 
 static int __init init_jiffies_clocksource(void)

-- 
-
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[PATCH 09/12] clocksource: initialize list value

[Daniel Walker]

A change to clocksource initialization. If the list field is initialized 
it allows clocksource_register to complete faster since it doesn't have 
to scan the list of clocks doing strcmp on each looking for duplicates.

Signed-Off-By: Daniel Walker [EMAIL PROTECTED]

---
 kernel/time/clocksource.c |3 +--
 kernel/time/jiffies.c |1 +
 2 files changed, 2 insertions(+), 2 deletions(-)

Index: linux-2.6.19/kernel/time/clocksource.c
===
--- linux-2.6.19.orig/kernel/time/clocksource.c
+++ linux-2.6.19/kernel/time/clocksource.c
@@ -186,12 +186,11 @@ int clocksource_register(struct clocksou
unsigned long flags;
 
spin_lock_irqsave(clocksource_lock, flags);
-   if (unlikely(!list_empty(c-list)  __is_registered(c-name))) {
+   if (unlikely(!list_empty(c-list))) {
printk(register_clocksource: Cannot register %s clocksource. 
   Already registered!, c-name);
ret = -EBUSY;
} else {
-   INIT_LIST_HEAD(c-list);
__sorted_list_add(c);
/* scan the registered clocksources, and pick the best one */
next_clocksource = select_clocksource();
Index: linux-2.6.19/kernel/time/jiffies.c
===
--- linux-2.6.19.orig/kernel/time/jiffies.c
+++ linux-2.6.19/kernel/time/jiffies.c
@@ -63,6 +63,7 @@ struct clocksource clocksource_jiffies =
.mult   = NSEC_PER_JIFFY  JIFFIES_SHIFT, /* details above */
.shift  = JIFFIES_SHIFT,
.is_continuous  = 0, /* tick based, not free running */
+   .list   = LIST_HEAD_INIT(clocksource_jiffies.list),
 };
 
 static int __init init_jiffies_clocksource(void)

-- 
-
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