path: root/arch/s390/lib/Makefile
diff options
authorMartin Schwidefsky <schwidefsky@de.ibm.com>2006-09-28 16:55:39 +0200
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2006-09-28 16:55:39 +0200
commitd9f7a745d55527d0d41684b22506a86c4381f7f1 (patch)
treeea8870ef06c3723ad59b78aac97bfe8152894c72 /arch/s390/lib/Makefile
parent1fce518e8e7de62597c823d6d795cafc694e7910 (diff)
[S390] __div64_32 for 31 bit.
The clocksource infrastructure introduced with commit ad596171ed635c51a9eef829187af100cbf8dcf7 broke 31 bit s390. The reason is that the do_div() primitive for 31 bit always had a restriction: it could only divide an unsigned 64 bit integer by an unsigned 31 bit integer. The clocksource code now uses do_div() with a base value that has the most significant bit set. The result is that clock->cycle_interval has a funny value which causes the linux time to jump around like mad. The solution is "obvious": implement a proper __div64_32 function for 31 bit s390. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/lib/Makefile')
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/s390/lib/Makefile b/arch/s390/lib/Makefile
index c42ffedfdb4..b0cfa6c4883 100644
--- a/arch/s390/lib/Makefile
+++ b/arch/s390/lib/Makefile
@@ -5,5 +5,6 @@
EXTRA_AFLAGS := -traditional
lib-y += delay.o string.o uaccess_std.o
+lib-$(CONFIG_32BIT) += div64.o
lib-$(CONFIG_64BIT) += uaccess_mvcos.o
lib-$(CONFIG_SMP) += spinlock.o