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Merge branch 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6

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* 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6: (85 commits)
  [S390] provide documentation for hvc_iucv kernel parameter.
  [S390] convert ctcm printks to dev_xxx and pr_xxx macros.
  [S390] convert zfcp printks to pr_xxx macros.
  [S390] convert vmlogrdr printks to pr_xxx macros.
  [S390] convert zfcp dumper printks to pr_xxx macros.
  [S390] convert cpu related printks to pr_xxx macros.
  [S390] convert qeth printks to dev_xxx and pr_xxx macros.
  [S390] convert sclp printks to pr_xxx macros.
  [S390] convert iucv printks to dev_xxx and pr_xxx macros.
  [S390] convert ap_bus printks to pr_xxx macros.
  [S390] convert dcssblk and extmem printks messages to pr_xxx macros.
  [S390] convert monwriter printks to pr_xxx macros.
  [S390] convert s390 debug feature printks to pr_xxx macros.
  [S390] convert monreader printks to pr_xxx macros.
  [S390] convert appldata printks to pr_xxx macros.
  [S390] convert setup printks to pr_xxx macros.
  [S390] convert hypfs printks to pr_xxx macros.
  [S390] convert time printks to pr_xxx macros.
  [S390] convert cpacf printks to pr_xxx macros.
  [S390] convert cio printks to pr_xxx macros.
  ...
This commit is contained in:
Linus Torvalds 2008-12-28 12:33:21 -08:00
commit 1db2a5c11e
143 changed files with 4885 additions and 2309 deletions
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41
arch/s390/kernel/topology.c
View file

@ -3,6 +3,9 @@
* Author(s): Heiko Carstens <heiko.carstens@de.ibm.com>
*/
#define KMSG_COMPONENT "cpu"
#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/init.h>
@ -12,6 +15,7 @@
#include <linux/workqueue.h>
#include <linux/cpu.h>
#include <linux/smp.h>
#include <linux/cpuset.h>
#include <asm/delay.h>
#include <asm/s390_ext.h>
#include <asm/sysinfo.h>
@ -57,11 +61,11 @@ struct core_info {
cpumask_t mask;
};
static int topology_enabled;
static void topology_work_fn(struct work_struct *work);
static struct tl_info *tl_info;
static struct core_info core_info;
static int machine_has_topology;
static int machine_has_topology_irq;
static struct timer_list topology_timer;
static void set_topology_timer(void);
static DECLARE_WORK(topology_work, topology_work_fn);
@ -77,8 +81,8 @@ cpumask_t cpu_coregroup_map(unsigned int cpu)
cpumask_t mask;
cpus_clear(mask);
if (!machine_has_topology)
return cpu_present_map;
if (!topology_enabled || !machine_has_topology)
return cpu_possible_map;
spin_lock_irqsave(&topology_lock, flags);
while (core) {
if (cpu_isset(cpu, core->mask)) {
@ -168,7 +172,7 @@ static void topology_update_polarization_simple(void)
int cpu;
mutex_lock(&smp_cpu_state_mutex);
for_each_present_cpu(cpu)
for_each_possible_cpu(cpu)
smp_cpu_polarization[cpu] = POLARIZATION_HRZ;
mutex_unlock(&smp_cpu_state_mutex);
}
@ -199,7 +203,7 @@ int topology_set_cpu_management(int fc)
rc = ptf(PTF_HORIZONTAL);
if (rc)
return -EBUSY;
for_each_present_cpu(cpu)
for_each_possible_cpu(cpu)
smp_cpu_polarization[cpu] = POLARIZATION_UNKNWN;
return rc;
}
@ -208,7 +212,7 @@ static void update_cpu_core_map(void)
{
int cpu;
for_each_present_cpu(cpu)
for_each_possible_cpu(cpu)
cpu_core_map[cpu] = cpu_coregroup_map(cpu);
}
@ -235,7 +239,7 @@ int arch_update_cpu_topology(void)
static void topology_work_fn(struct work_struct *work)
{
arch_reinit_sched_domains();
rebuild_sched_domains();
}
void topology_schedule_update(void)
@ -258,10 +262,14 @@ static void set_topology_timer(void)
add_timer(&topology_timer);
}
static void topology_interrupt(__u16 code)
static int __init early_parse_topology(char *p)
{
schedule_work(&topology_work);
if (strncmp(p, "on", 2))
return 0;
topology_enabled = 1;
return 0;
}
early_param("topology", early_parse_topology);
static int __init init_topology_update(void)
{
@ -273,14 +281,7 @@ static int __init init_topology_update(void)
goto out;
}
init_timer_deferrable(&topology_timer);
if (machine_has_topology_irq) {
rc = register_external_interrupt(0x2005, topology_interrupt);
if (rc)
goto out;
ctl_set_bit(0, 8);
}
else
set_topology_timer();
set_topology_timer();
out:
update_cpu_core_map();
return rc;
@ -301,9 +302,6 @@ void __init s390_init_cpu_topology(void)
return;
machine_has_topology = 1;
if (facility_bits & (1ULL << 51))
machine_has_topology_irq = 1;
tl_info = alloc_bootmem_pages(PAGE_SIZE);
info = tl_info;
stsi(info, 15, 1, 2);
@ -312,7 +310,7 @@ void __init s390_init_cpu_topology(void)
for (i = 0; i < info->mnest - 2; i++)
nr_cores *= info->mag[NR_MAG - 3 - i];
printk(KERN_INFO "CPU topology:");
pr_info("The CPU configuration topology of the machine is:");
for (i = 0; i < NR_MAG; i++)
printk(" %d", info->mag[i]);
printk(" / %d\n", info->mnest);
@ -327,5 +325,4 @@ void __init s390_init_cpu_topology(void)
return;
error:
machine_has_topology = 0;
machine_has_topology_irq = 0;
}