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| author |   Heiko Carstens <heiko.carstens@de.ibm.com> | 2007-11-05 11:10:10 +0100 |
|---|---|---|
| committer |   Martin Schwidefsky <schwidefsky@de.ibm.com> | 2007-11-05 11:10:16 +0100 |
| commit | 0d2be08893605be00de0f95ee7e4b8917ea1ebc3 (patch) | |
| tree | b9d9b4d0ef7079d5cea961dccb7c9e828aca275c /arch/s390/kernel/process.c | |
| parent | [S390] device_schedule_callback() for dcssblk. (diff) | |
| download | linux-dev-0d2be08893605be00de0f95ee7e4b8917ea1ebc3.tar.xz linux-dev-0d2be08893605be00de0f95ee7e4b8917ea1ebc3.zip | |
[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 '')
| -rw-r--r-- | arch/s390/kernel/process.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/arch/s390/kernel/process.c b/arch/s390/kernel/process.c index 96492cf2d491..29f7884b4ffa 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 | |