A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-29 03:01:39 -04:00
Code Issues Projects Releases Packages Wiki Activity

KVM: Remove unnecessary debugfs dentry references

Browse source 
KVM creates debugfs files to export VM statistics to userland. To be
able to remove them on kvm exit it tracks the files' dentries.

Since their parent directory is also tracked and since each parent
direntry knows its children we can easily remove them by using
debugfs_remove_recursive(kvm_debugfs_dir). Therefore we don't
need the extra tracking in the kvm_stats_debugfs_item anymore.

Signed-off-by: Janosch Frank <[email protected]>
Reviewed-By: Sascha Silbe <[email protected]>
Acked-by: Christian Borntraeger <[email protected]>
Signed-off-by: Christian Borntraeger <[email protected]>
This commit is contained in:
Janosch Frank 2015-10-14 12:37:35 +02:00 • committed by Christian Borntraeger
commit 4bd33b5688
2 changed files with 4 additions and 15 deletions
Download patch file Download diff file Expand all files Collapse all files

18
virt/kvm/kvm_main.c
View file

@ -3447,10 +3447,9 @@ static int kvm_init_debug(void)
goto out;
for (p = debugfs_entries; p->name; ++p) {
p->dentry = debugfs_create_file(p->name, 0444, kvm_debugfs_dir,
(void *)(long)p->offset,
stat_fops[p->kind]);
if (p->dentry == NULL)
if (!debugfs_create_file(p->name, 0444, kvm_debugfs_dir,
(void *)(long)p->offset,
stat_fops[p->kind]))
goto out_dir;
}
@ -3462,15 +3461,6 @@ out:
return r;
}
static void kvm_exit_debug(void)
{
struct kvm_stats_debugfs_item *p;
for (p = debugfs_entries; p->name; ++p)
debugfs_remove(p->dentry);
debugfs_remove(kvm_debugfs_dir);
}
static int kvm_suspend(void)
{
if (kvm_usage_count)
@ -3628,7 +3618,7 @@ EXPORT_SYMBOL_GPL(kvm_init);
void kvm_exit(void)
{
kvm_exit_debug();
debugfs_remove_recursive(kvm_debugfs_dir);
misc_deregister(&kvm_dev);
kmem_cache_destroy(kvm_vcpu_cache);
kvm_async_pf_deinit();