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authorHeiko Carstens <heiko.carstens@de.ibm.com>2009-09-11 10:29:05 +0200
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2009-09-11 10:29:56 +0200
commit5c0b912e755caaad555eb6feefdb1124462d8f37 (patch)
tree94911d8d9a9cb53faeb78bb2396984f64c31f2c2 /arch/s390/kernel
parente86a6ed63f46fe8fb555fda531084bca3ef62fd7 (diff)
[S390] Remove smp_cpu_not_running.
smp_cpu_not_running() and cpu_stopped() are doing the same. Remove one and also get rid of the last hard_smp_processor_id() leftover. 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')
-rw-r--r--arch/s390/kernel/smp.c34
1 files changed, 19 insertions, 15 deletions
diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
index 9261495ca2c..56c16876b91 100644
--- a/arch/s390/kernel/smp.c
+++ b/arch/s390/kernel/smp.c
@@ -71,6 +71,23 @@ static DEFINE_PER_CPU(struct cpu, cpu_devices);
static void smp_ext_bitcall(int, ec_bit_sig);
+static int cpu_stopped(int cpu)
+{
+ __u32 status;
+
+ switch (signal_processor_ps(&status, 0, cpu, sigp_sense)) {
+ case sigp_order_code_accepted:
+ case sigp_status_stored:
+ /* Check for stopped and check stop state */
+ if (status & 0x50)
+ return 1;
+ break;
+ default:
+ break;
+ }
+ return 0;
+}
+
void smp_send_stop(void)
{
int cpu, rc;
@@ -87,7 +104,7 @@ void smp_send_stop(void)
rc = signal_processor(cpu, sigp_stop);
} while (rc == sigp_busy);
- while (!smp_cpu_not_running(cpu))
+ while (!cpu_stopped(cpu))
cpu_relax();
}
}
@@ -270,19 +287,6 @@ static inline void smp_get_save_area(unsigned int cpu, unsigned int phy_cpu) { }
#endif /* CONFIG_ZFCPDUMP */
-static int cpu_stopped(int cpu)
-{
- __u32 status;
-
- /* Check for stopped state */
- if (signal_processor_ps(&status, 0, cpu, sigp_sense) ==
- sigp_status_stored) {
- if (status & 0x40)
- return 1;
- }
- return 0;
-}
-
static int cpu_known(int cpu_id)
{
int cpu;
@@ -636,7 +640,7 @@ int __cpu_disable(void)
void __cpu_die(unsigned int cpu)
{
/* Wait until target cpu is down */
- while (!smp_cpu_not_running(cpu))
+ while (!cpu_stopped(cpu))
cpu_relax();
smp_free_lowcore(cpu);
pr_info("Processor %d stopped\n", cpu);