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[SPARC64]: dr-cpu unconfigure support.

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Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller
2007-07-16 03:49:40 -07:00
parent f3c681c028
commit e0204409df
7 changed files with 171 additions and 21 deletions
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25
arch/sparc64/kernel/ds.c
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@@ -20,6 +20,7 @@
#include <asm/power.h>
#include <asm/mdesc.h>
#include <asm/head.h>
#include <asm/irq.h>
#define DRV_MODULE_NAME "ds"
#define PFX DRV_MODULE_NAME ": "
@@ -559,6 +560,9 @@ static int dr_cpu_configure(struct ds_cap_state *cp, u64 req_num,
kfree(resp);
/* Redistribute IRQs, taking into account the new cpus. */
fixup_irqs();
return 0;
}
@@ -566,7 +570,8 @@ static int dr_cpu_unconfigure(struct ds_cap_state *cp, u64 req_num,
cpumask_t *mask)
{
struct ds_data *resp;
int resp_len, ncpus;
int resp_len, ncpus, cpu;
unsigned long flags;
ncpus = cpus_weight(*mask);
resp_len = dr_cpu_size_response(ncpus);
@@ -578,9 +583,25 @@ static int dr_cpu_unconfigure(struct ds_cap_state *cp, u64 req_num,
resp_len, ncpus, mask,
DR_CPU_STAT_UNCONFIGURED);
for_each_cpu_mask(cpu, *mask) {
int err;
printk(KERN_INFO PFX "CPU[%d]: Shutting down cpu %d...\n",
smp_processor_id(), cpu);
err = cpu_down(cpu);
if (err)
dr_cpu_mark(resp, cpu, ncpus,
DR_CPU_RES_FAILURE,
DR_CPU_STAT_CONFIGURED);
}
spin_lock_irqsave(&ds_lock, flags);
ds_send(ds_info->lp, resp, resp_len);
spin_unlock_irqrestore(&ds_lock, flags);
kfree(resp);
return -EOPNOTSUPP;
return 0;
}
static void process_dr_cpu_list(struct ds_cap_state *cp)