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| author | David S. Miller <davem@sunset.davemloft.net> | 2007-07-16 03:49:40 -0700 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2007-07-16 04:05:32 -0700 |
| commit | e0204409df29fe1b7d18f81dfc3ae6f9d90e7a63 (patch) | |
| tree | 66f670c0f182d02185f2f3ea6bb7bb97c165ff3b /arch/sparc64/kernel/ds.c | |
| parent | f3c681c028846bd5d39f563909409832a295ca69 (diff) | |
| download | linux-e0204409df29fe1b7d18f81dfc3ae6f9d90e7a63.tar.bz2 | |
[SPARC64]: dr-cpu unconfigure support.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc64/kernel/ds.c')
| -rw-r--r-- | arch/sparc64/kernel/ds.c | 25 |
1 files changed, 23 insertions, 2 deletions
diff --git a/arch/sparc64/kernel/ds.c b/arch/sparc64/kernel/ds.c index b6331718ee0c..1c587107cef0 100644 --- a/arch/sparc64/kernel/ds.c +++ b/arch/sparc64/kernel/ds.c @@ -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) |