fs/nfsd/stats.h
Source file repositories/reference/linux-study-clean/fs/nfsd/stats.h
File Facts
- System
- Linux kernel
- Corpus path
fs/nfsd/stats.h- Extension
.h- Size
- 2185 bytes
- Lines
- 77
- Domain
- Core OS
- Bucket
- VFS And Filesystem Core
- Inferred role
- Core OS: implementation source
- Status
- source implementation candidate
Why This File Exists
Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.
- Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.
- Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.
Dependency Surface
uapi/linux/nfsd/stats.hlinux/percpu_counter.h
Detected Declarations
function nfsd_stats_rc_hits_incfunction nfsd_stats_rc_misses_incfunction nfsd_stats_rc_nocache_incfunction nfsd_stats_fh_stale_incfunction nfsd_stats_io_read_addfunction nfsd_stats_io_write_addfunction nfsd_stats_payload_misses_incfunction nfsd_stats_drc_mem_usage_addfunction nfsd_stats_drc_mem_usage_subfunction nfsd_stats_wdeleg_getattr_inc
Annotated Snippet
#ifndef _NFSD_STATS_H
#define _NFSD_STATS_H
#include <uapi/linux/nfsd/stats.h>
#include <linux/percpu_counter.h>
struct proc_dir_entry *nfsd_proc_stat_init(struct net *net);
void nfsd_proc_stat_shutdown(struct net *net);
static inline void nfsd_stats_rc_hits_inc(struct nfsd_net *nn)
{
percpu_counter_inc(&nn->counter[NFSD_STATS_RC_HITS]);
}
static inline void nfsd_stats_rc_misses_inc(struct nfsd_net *nn)
{
percpu_counter_inc(&nn->counter[NFSD_STATS_RC_MISSES]);
}
static inline void nfsd_stats_rc_nocache_inc(struct nfsd_net *nn)
{
percpu_counter_inc(&nn->counter[NFSD_STATS_RC_NOCACHE]);
}
static inline void nfsd_stats_fh_stale_inc(struct nfsd_net *nn,
struct svc_export *exp)
{
percpu_counter_inc(&nn->counter[NFSD_STATS_FH_STALE]);
if (exp && exp->ex_stats)
percpu_counter_inc(&exp->ex_stats->counter[EXP_STATS_FH_STALE]);
}
static inline void nfsd_stats_io_read_add(struct nfsd_net *nn,
struct svc_export *exp, s64 amount)
{
percpu_counter_add(&nn->counter[NFSD_STATS_IO_READ], amount);
if (exp && exp->ex_stats)
percpu_counter_add(&exp->ex_stats->counter[EXP_STATS_IO_READ], amount);
}
static inline void nfsd_stats_io_write_add(struct nfsd_net *nn,
struct svc_export *exp, s64 amount)
{
percpu_counter_add(&nn->counter[NFSD_STATS_IO_WRITE], amount);
if (exp && exp->ex_stats)
percpu_counter_add(&exp->ex_stats->counter[EXP_STATS_IO_WRITE], amount);
}
static inline void nfsd_stats_payload_misses_inc(struct nfsd_net *nn)
{
percpu_counter_inc(&nn->counter[NFSD_STATS_PAYLOAD_MISSES]);
}
static inline void nfsd_stats_drc_mem_usage_add(struct nfsd_net *nn, s64 amount)
{
percpu_counter_add(&nn->counter[NFSD_STATS_DRC_MEM_USAGE], amount);
}
static inline void nfsd_stats_drc_mem_usage_sub(struct nfsd_net *nn, s64 amount)
{
percpu_counter_sub(&nn->counter[NFSD_STATS_DRC_MEM_USAGE], amount);
}
#ifdef CONFIG_NFSD_V4
static inline void nfsd_stats_wdeleg_getattr_inc(struct nfsd_net *nn)
{
percpu_counter_inc(&nn->counter[NFSD_STATS_WDELEG_GETATTR]);
}
#endif
#endif /* _NFSD_STATS_H */
Annotation
- Immediate include surface: `uapi/linux/nfsd/stats.h`, `linux/percpu_counter.h`.
- Detected declarations: `function nfsd_stats_rc_hits_inc`, `function nfsd_stats_rc_misses_inc`, `function nfsd_stats_rc_nocache_inc`, `function nfsd_stats_fh_stale_inc`, `function nfsd_stats_io_read_add`, `function nfsd_stats_io_write_add`, `function nfsd_stats_payload_misses_inc`, `function nfsd_stats_drc_mem_usage_add`, `function nfsd_stats_drc_mem_usage_sub`, `function nfsd_stats_wdeleg_getattr_inc`.
- Atlas domain: Core OS / VFS And Filesystem Core.
- Implementation status: source implementation candidate.
Implementation Notes
- This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
- Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
- Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.