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| author | Avi Kivity <avi@qumranet.com> | 2007-11-18 16:24:12 +0200 |
|---|---|---|
| committer | Avi Kivity <avi@qumranet.com> | 2008-01-30 17:53:04 +0200 |
| commit | ba1389b7a04de07e6231693b7ebb34f5b5d1a3e6 (patch) | |
| tree | 536139f6e1d3a918b13a9c44f2144c52366a55bb /drivers/kvm/kvm_main.c | |
| parent | f2b5756bb3fbdca912c4890e444c18650389d8ae (diff) | |
| download | lwn-ba1389b7a04de07e6231693b7ebb34f5b5d1a3e6.tar.gz lwn-ba1389b7a04de07e6231693b7ebb34f5b5d1a3e6.zip | |
KVM: Extend stats support for VM stats
This is in addition to the current virtual cpu statistics.
Signed-off-by: Avi Kivity <avi@qumranet.com>
Diffstat (limited to 'drivers/kvm/kvm_main.c')
| -rw-r--r-- | drivers/kvm/kvm_main.c | 26 |
1 files changed, 23 insertions, 3 deletions
diff --git a/drivers/kvm/kvm_main.c b/drivers/kvm/kvm_main.c index bde3cf741892..b0b6ff2a8cbe 100644 --- a/drivers/kvm/kvm_main.c +++ b/drivers/kvm/kvm_main.c @@ -1281,7 +1281,22 @@ static struct notifier_block kvm_cpu_notifier = { .priority = 20, /* must be > scheduler priority */ }; -static u64 stat_get(void *_offset) +static u64 vm_stat_get(void *_offset) +{ + unsigned offset = (long)_offset; + u64 total = 0; + struct kvm *kvm; + + spin_lock(&kvm_lock); + list_for_each_entry(kvm, &vm_list, vm_list) + total += *(u32 *)((void *)kvm + offset); + spin_unlock(&kvm_lock); + return total; +} + +DEFINE_SIMPLE_ATTRIBUTE(vm_stat_fops, vm_stat_get, NULL, "%llu\n"); + +static u64 vcpu_stat_get(void *_offset) { unsigned offset = (long)_offset; u64 total = 0; @@ -1300,7 +1315,12 @@ static u64 stat_get(void *_offset) return total; } -DEFINE_SIMPLE_ATTRIBUTE(stat_fops, stat_get, NULL, "%llu\n"); +DEFINE_SIMPLE_ATTRIBUTE(vcpu_stat_fops, vcpu_stat_get, NULL, "%llu\n"); + +static struct file_operations *stat_fops[] = { + [KVM_STAT_VCPU] = &vcpu_stat_fops, + [KVM_STAT_VM] = &vm_stat_fops, +}; static void kvm_init_debug(void) { @@ -1310,7 +1330,7 @@ static void kvm_init_debug(void) for (p = debugfs_entries; p->name; ++p) p->dentry = debugfs_create_file(p->name, 0444, debugfs_dir, (void *)(long)p->offset, - &stat_fops); + stat_fops[p->kind]); } static void kvm_exit_debug(void) |