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authorIngo Molnar2009-04-29 14:46:59 +0200
committerIngo Molnar2009-04-29 14:47:05 +0200
commite7fd5d4b3d240f42c30a9e3d20a4689c4d3a795a (patch)
tree4ba588631dd8189a818a91c9e3976526071178b6 /arch/s390/kernel/early.c
parentperf_counter tools: fix Documentation/perf_counter build error (diff)
parentMerge branch 'drm-intel-next' of git://git.kernel.org/pub/scm/linux/kernel/gi... (diff)
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Merge branch 'linus' into perfcounters/core
Merge reason: This brach was on -rc1, refresh it to almost-rc4 to pick up the latest upstream fixes. Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/s390/kernel/early.c')
-rw-r--r--arch/s390/kernel/early.c19
1 files changed, 19 insertions, 0 deletions
diff --git a/arch/s390/kernel/early.c b/arch/s390/kernel/early.c
index 4d221c81c849..cf09948faad6 100644
--- a/arch/s390/kernel/early.c
+++ b/arch/s390/kernel/early.c
@@ -34,8 +34,25 @@
char kernel_nss_name[NSS_NAME_SIZE + 1];
+static unsigned long machine_flags;
+
static void __init setup_boot_command_line(void);
+/*
+ * Get the TOD clock running.
+ */
+static void __init reset_tod_clock(void)
+{
+ u64 time;
+
+ if (store_clock(&time) == 0)
+ return;
+ /* TOD clock not running. Set the clock to Unix Epoch. */
+ if (set_clock(TOD_UNIX_EPOCH) != 0 || store_clock(&time) != 0)
+ disabled_wait(0);
+
+ sched_clock_base_cc = TOD_UNIX_EPOCH;
+}
#ifdef CONFIG_SHARED_KERNEL
int __init savesys_ipl_nss(char *cmd, const int cmdlen);
@@ -370,6 +387,7 @@ static void __init setup_boot_command_line(void)
*/
void __init startup_init(void)
{
+ reset_tod_clock();
ipl_save_parameters();
rescue_initrd();
clear_bss_section();
@@ -391,5 +409,6 @@ void __init startup_init(void)
setup_hpage();
sclp_facilities_detect();
detect_memory_layout(memory_chunk);
+ S390_lowcore.machine_flags = machine_flags;
lockdep_on();
}