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KVM: debugfs: Reuse binary stats descriptors

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To remove code duplication, use the binary stats descriptors in the
implementation of the debugfs interface for statistics. This unifies
the definition of statistics for the binary and debugfs interfaces.

Signed-off-by: Jing Zhang <jingzhangos@google.com>
Message-Id: <20210618222709.1858088-8-jingzhangos@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Jing Zhang
2021-06-23 17:28:46 -04:00
committed by Paolo Bonzini
parent 0b45d58738
commit bc9e9e672d
8 changed files with 78 additions and 313 deletions
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17
include/linux/kvm_host.h
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@@ -1264,14 +1264,8 @@ enum kvm_stat_kind {
struct kvm_stat_data {
struct kvm *kvm;
struct kvm_stats_debugfs_item *dbgfs_item;
};
struct kvm_stats_debugfs_item {
const char *name;
int offset;
const struct _kvm_stats_desc *desc;
enum kvm_stat_kind kind;
int mode;
};
struct _kvm_stats_desc {
@@ -1279,14 +1273,6 @@ struct _kvm_stats_desc {
char name[KVM_STATS_NAME_SIZE];
};
#define KVM_DBGFS_GET_MODE(dbgfs_item) \
((dbgfs_item)->mode ? (dbgfs_item)->mode : 0644)
#define VM_STAT(n, x, ...) \
{ n, offsetof(struct kvm, stat.x), KVM_STAT_VM, ## __VA_ARGS__ }
#define VCPU_STAT(n, x, ...) \
{ n, offsetof(struct kvm_vcpu, stat.x), KVM_STAT_VCPU, ## __VA_ARGS__ }
#define STATS_DESC_COMMON(type, unit, base, exp) \
.flags = type | unit | base | \
BUILD_BUG_ON_ZERO(type & ~KVM_STATS_TYPE_MASK) | \
@@ -1367,7 +1353,6 @@ struct _kvm_stats_desc {
STATS_DESC_TIME_NSEC(VCPU_GENERIC, halt_poll_success_ns), \
STATS_DESC_TIME_NSEC(VCPU_GENERIC, halt_poll_fail_ns)
extern struct kvm_stats_debugfs_item debugfs_entries[];
extern struct dentry *kvm_debugfs_dir;
ssize_t kvm_stats_read(char *id, const struct kvm_stats_header *header,
const struct _kvm_stats_desc *desc,