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authorKyle McMartin <kyle@mako.i.cabal.ca>2007-02-26 22:21:22 -0500
committerKyle McMartin <kyle@mako.i.cabal.ca>2007-02-26 22:21:22 -0500
commit01363220f5d23ef68276db8974e46a502e43d01d (patch)
tree1cbb083b854f58036396252cc16dc7cd5ffc2363 /arch/parisc
parentfb55a0debee81280684b68713024d0c5e62e8aa5 (diff)
downloadlinux-2.6.34-ux500-01363220f5d23ef68276db8974e46a502e43d01d.tar.gz
[PARISC] clocksource: Move update_cr16_clocksource later in boot
smp_cpus_done is too early for us... before we even do a device inventory! Move update_cr16_clocksource into the tail end of processor_probe() and stub it out on CONFIG_SMP=n builds. Verified that clocksource0 is properly updated to use jiffies on an SMP build. Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
Diffstat (limited to 'arch/parisc')
-rw-r--r--arch/parisc/kernel/processor.c8
-rw-r--r--arch/parisc/kernel/smp.c4
-rw-r--r--arch/parisc/kernel/time.c5
3 files changed, 13 insertions, 4 deletions
diff --git a/arch/parisc/kernel/processor.c b/arch/parisc/kernel/processor.c
index 7c056dcebf5..dd5d0cb6b34 100644
--- a/arch/parisc/kernel/processor.c
+++ b/arch/parisc/kernel/processor.c
@@ -48,6 +48,8 @@ EXPORT_SYMBOL(boot_cpu_data);
struct cpuinfo_parisc cpu_data[NR_CPUS] __read_mostly;
+extern int update_cr16_clocksource(void); /* from time.c */
+
/*
** PARISC CPU driver - claim "device" and initialize CPU data structures.
**
@@ -198,6 +200,12 @@ static int __init processor_probe(struct parisc_device *dev)
}
#endif
+ /* If we've registered more than one cpu,
+ * we'll use the jiffies clocksource since cr16
+ * is not synchronized between CPUs.
+ */
+ update_cr16_clocksource();
+
return 0;
}
diff --git a/arch/parisc/kernel/smp.c b/arch/parisc/kernel/smp.c
index bb6e6a38e91..6ba9257fdb7 100644
--- a/arch/parisc/kernel/smp.c
+++ b/arch/parisc/kernel/smp.c
@@ -567,10 +567,6 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
void smp_cpus_done(unsigned int cpu_max)
{
- extern int update_cr16_clocksource(void);
-
- update_cr16_clocksource();
-
return;
}
diff --git a/arch/parisc/kernel/time.c b/arch/parisc/kernel/time.c
index 9b14066d693..07a991aa9b0 100644
--- a/arch/parisc/kernel/time.c
+++ b/arch/parisc/kernel/time.c
@@ -200,6 +200,11 @@ int update_cr16_clocksource(void)
return change;
}
+#else
+int update_cr16_clocksource(void)
+{
+ return 0; /* no change */
+}
#endif /*CONFIG_SMP*/
void __init start_cpu_itimer(void)