redonkable/alistair23-linux
redonkable/alistair23-linux
1
0
Fork 0
Code Releases Activity

powerpc/cpumask: Convert pseries SMP code to new cpumask API

Browse source 
Use new cpumask functions in pseries SMP startup code.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Anton Blanchard 2010-04-26 15:32:37 +00:00 committed by Benjamin Herrenschmidt
parent 115731312f
commit af831e1e44
1 changed files with 9 additions and 7 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

16
arch/powerpc/platforms/pseries/smp.c
View file

@ -55,7 +55,7 @@
* The Primary thread of each non-boot processor was started from the OF client
* interface by prom_hold_cpus and is spinning on secondary_hold_spinloop.
*/
static cpumask_t of_spin_map;
static cpumask_var_t of_spin_mask;
/* Query where a cpu is now. Return codes #defined in plpar_wrappers.h */
int smp_query_cpu_stopped(unsigned int pcpu)
@ -98,7 +98,7 @@ static inline int __devinit smp_startup_cpu(unsigned int lcpu)
unsigned int pcpu;
int start_cpu;
if (cpu_isset(lcpu, of_spin_map))
if (cpumask_test_cpu(lcpu, of_spin_mask))
/* Already started by OF and sitting in spin loop */
return 1;
@ -106,7 +106,7 @@ static inline int __devinit smp_startup_cpu(unsigned int lcpu)
/* Check to see if the CPU out of FW already for kexec */
if (smp_query_cpu_stopped(pcpu) == QCSS_NOT_STOPPED){
cpu_set(lcpu, of_spin_map);
cpumask_set_cpu(lcpu, of_spin_mask);
return 1;
}
@ -143,7 +143,7 @@ static void __devinit smp_xics_setup_cpu(int cpu)
if (firmware_has_feature(FW_FEATURE_SPLPAR))
vpa_init(cpu);
cpu_clear(cpu, of_spin_map);
cpumask_clear_cpu(cpu, of_spin_mask);
set_cpu_current_state(cpu, CPU_STATE_ONLINE);
set_default_offline_state(cpu);
@ -214,17 +214,19 @@ static void __init smp_init_pseries(void)
pr_debug(" -> smp_init_pSeries()\n");
alloc_bootmem_cpumask_var(&of_spin_mask);
/* Mark threads which are still spinning in hold loops. */
if (cpu_has_feature(CPU_FTR_SMT)) {
for_each_present_cpu(i) {
if (cpu_thread_in_core(i) == 0)
cpu_set(i, of_spin_map);
cpumask_set_cpu(i, of_spin_mask);
}
} else {
of_spin_map = cpu_present_map;
cpumask_copy(of_spin_mask, cpu_present_mask);
}
cpu_clear(boot_cpuid, of_spin_map);
cpumask_clear_cpu(boot_cpuid, of_spin_mask);
/* Non-lpar has additional take/give timebase */
if (rtas_token("freeze-time-base") != RTAS_UNKNOWN_SERVICE) {