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authorHeiko Carstens <heiko.carstens@de.ibm.com>2007-11-05 11:10:10 +0100
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2007-11-05 11:10:16 +0100
commit0d2be08893605be00de0f95ee7e4b8917ea1ebc3 (patch)
treeb9d9b4d0ef7079d5cea961dccb7c9e828aca275c /arch/s390/kernel/process.c
parent931bb68ba6355b7111966c90822ed862c102a9cd (diff)
[S390] Fix compile on !CONFIG_SMP.
Commit fae8b22d3e3e3a3d317a7746493997af02a3f35c "[S390] Add per-cpu idle time / idle count sysfs attributes" causes a link error on !CONFIG_SMP. Fix this by adding some #ifdef's. Real fix would be to cleanup the code since we don't register a cpu on !CONFIG_SMP. But that would be quite a big patch. For the time being this is good enough. arch/s390/kernel/built-in.o: In function `do_monitor_call': (.text+0x50d4): undefined reference to `per_cpu__s390_idle' arch/s390/kernel/built-in.o: In function `cpu_idle': (.text+0x518c): undefined reference to `per_cpu__s390_idle' make: *** [.tmp_vmlinux1] Error 1 Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/kernel/process.c')
-rw-r--r--arch/s390/kernel/process.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/arch/s390/kernel/process.c b/arch/s390/kernel/process.c
index 96492cf2d49..29f7884b4ff 100644
--- a/arch/s390/kernel/process.c
+++ b/arch/s390/kernel/process.c
@@ -92,6 +92,7 @@ EXPORT_SYMBOL(unregister_idle_notifier);
void do_monitor_call(struct pt_regs *regs, long interruption_code)
{
+#ifdef CONFIG_SMP
struct s390_idle_data *idle;
idle = &__get_cpu_var(s390_idle);
@@ -99,7 +100,7 @@ void do_monitor_call(struct pt_regs *regs, long interruption_code)
idle->idle_time += get_clock() - idle->idle_enter;
idle->in_idle = 0;
spin_unlock(&idle->lock);
-
+#endif
/* disable monitor call class 0 */
__ctl_clear_bit(8, 15);
@@ -114,7 +115,9 @@ extern void s390_handle_mcck(void);
static void default_idle(void)
{
int cpu, rc;
+#ifdef CONFIG_SMP
struct s390_idle_data *idle;
+#endif
/* CPU is going idle. */
cpu = smp_processor_id();
@@ -151,13 +154,14 @@ static void default_idle(void)
s390_handle_mcck();
return;
}
-
+#ifdef CONFIG_SMP
idle = &__get_cpu_var(s390_idle);
spin_lock(&idle->lock);
idle->idle_count++;
idle->in_idle = 1;
idle->idle_enter = get_clock();
spin_unlock(&idle->lock);
+#endif
trace_hardirqs_on();
/* Wait for external, I/O or machine check interrupt. */
__load_psw_mask(psw_kernel_bits | PSW_MASK_WAIT |