Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=e97126cd9056b3b42cdc862ace2ed66f8026f55b
Commit: e97126cd9056b3b42cdc862ace2ed66f8026f55b
Parent: 6020dff09252e3670a89edb36baaa4afb9b10d15
Author: Russell King <[EMAIL PROTECTED]>
AuthorDate: Mon Jan 8 19:49:12 2007 +0000
Committer: Russell King <[EMAIL PROTECTED]>
CommitDate: Mon Jan 8 19:50:03 2007 +0000
[ARM] Provide basic printk_clock() implementation
Current sched_clock() implementations on ARM cause unbootable kernels
with PRINTK_TIME support enabled. To avoid this, provide a basic
printk_clock() implementation which avoids sched_clock() being called
before the page tables have been set up.
Signed-off-by: Russell King <[EMAIL PROTECTED]>
---
arch/arm/kernel/time.c | 11 +++++++++++
1 files changed, 11 insertions(+), 0 deletions(-)
diff --git a/arch/arm/kernel/time.c b/arch/arm/kernel/time.c
index 174cd49..3c8cdcf 100644
--- a/arch/arm/kernel/time.c
+++ b/arch/arm/kernel/time.c
@@ -87,6 +87,17 @@ unsigned long long __attribute__((weak)) sched_clock(void)
return (unsigned long long)jiffies * (1000000000 / HZ);
}
+/*
+ * An implementation of printk_clock() independent from
+ * sched_clock(). This avoids non-bootable kernels when
+ * printk_clock is enabled.
+ */
+unsigned long long printk_clock(void)
+{
+ return (unsigned long long)(jiffies - INITIAL_JIFFIES) *
+ (1000000000 / HZ);
+}
+
static unsigned long next_rtc_update;
/*
-
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