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6939ace1f2
fs/nfsd/export.c: In function 'svc_export_parse':
fs/nfsd/export.c:737:1: warning: the frame size of 1040 bytes is larger than 1024 bytes [-Wframe-larger-than=]
737 | }
On my systems, svc_export_parse() has a stack frame of over 800
bytes, not 1040, but nonetheless, it could do with some reduction.
When a struct svc_export is on the stack, it's a temporary structure
used as an argument, and not visible as an actual exported FS. No
need to reserve space for export_stats in such cases.
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202310012359.YEw5IrK6-lkp@intel.com/
Cc: Amir Goldstein <amir73il@gmail.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
104 lines
3.0 KiB
C
104 lines
3.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Statistics for NFS server.
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*
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* Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de>
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*/
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#ifndef _NFSD_STATS_H
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#define _NFSD_STATS_H
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#include <uapi/linux/nfsd/stats.h>
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#include <linux/percpu_counter.h>
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enum {
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NFSD_STATS_RC_HITS, /* repcache hits */
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NFSD_STATS_RC_MISSES, /* repcache misses */
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NFSD_STATS_RC_NOCACHE, /* uncached reqs */
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NFSD_STATS_FH_STALE, /* FH stale error */
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NFSD_STATS_IO_READ, /* bytes returned to read requests */
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NFSD_STATS_IO_WRITE, /* bytes passed in write requests */
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#ifdef CONFIG_NFSD_V4
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NFSD_STATS_FIRST_NFS4_OP, /* count of individual nfsv4 operations */
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NFSD_STATS_LAST_NFS4_OP = NFSD_STATS_FIRST_NFS4_OP + LAST_NFS4_OP,
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#define NFSD_STATS_NFS4_OP(op) (NFSD_STATS_FIRST_NFS4_OP + (op))
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NFSD_STATS_WDELEG_GETATTR, /* count of getattr conflict with wdeleg */
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#endif
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NFSD_STATS_COUNTERS_NUM
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};
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struct nfsd_stats {
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struct percpu_counter counter[NFSD_STATS_COUNTERS_NUM];
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atomic_t th_cnt; /* number of available threads */
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};
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extern struct nfsd_stats nfsdstats;
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extern struct svc_stat nfsd_svcstats;
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int nfsd_percpu_counters_init(struct percpu_counter *counters, int num);
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void nfsd_percpu_counters_reset(struct percpu_counter *counters, int num);
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void nfsd_percpu_counters_destroy(struct percpu_counter *counters, int num);
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int nfsd_stat_init(void);
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void nfsd_stat_shutdown(void);
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static inline void nfsd_stats_rc_hits_inc(void)
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{
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percpu_counter_inc(&nfsdstats.counter[NFSD_STATS_RC_HITS]);
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}
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static inline void nfsd_stats_rc_misses_inc(void)
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{
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percpu_counter_inc(&nfsdstats.counter[NFSD_STATS_RC_MISSES]);
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}
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static inline void nfsd_stats_rc_nocache_inc(void)
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{
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percpu_counter_inc(&nfsdstats.counter[NFSD_STATS_RC_NOCACHE]);
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}
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static inline void nfsd_stats_fh_stale_inc(struct svc_export *exp)
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{
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percpu_counter_inc(&nfsdstats.counter[NFSD_STATS_FH_STALE]);
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if (exp && exp->ex_stats)
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percpu_counter_inc(&exp->ex_stats->counter[EXP_STATS_FH_STALE]);
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}
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static inline void nfsd_stats_io_read_add(struct svc_export *exp, s64 amount)
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{
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percpu_counter_add(&nfsdstats.counter[NFSD_STATS_IO_READ], amount);
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if (exp && exp->ex_stats)
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percpu_counter_add(&exp->ex_stats->counter[EXP_STATS_IO_READ], amount);
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}
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static inline void nfsd_stats_io_write_add(struct svc_export *exp, s64 amount)
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{
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percpu_counter_add(&nfsdstats.counter[NFSD_STATS_IO_WRITE], amount);
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if (exp && exp->ex_stats)
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percpu_counter_add(&exp->ex_stats->counter[EXP_STATS_IO_WRITE], amount);
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}
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static inline void nfsd_stats_payload_misses_inc(struct nfsd_net *nn)
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{
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percpu_counter_inc(&nn->counter[NFSD_NET_PAYLOAD_MISSES]);
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}
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static inline void nfsd_stats_drc_mem_usage_add(struct nfsd_net *nn, s64 amount)
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{
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percpu_counter_add(&nn->counter[NFSD_NET_DRC_MEM_USAGE], amount);
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}
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static inline void nfsd_stats_drc_mem_usage_sub(struct nfsd_net *nn, s64 amount)
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{
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percpu_counter_sub(&nn->counter[NFSD_NET_DRC_MEM_USAGE], amount);
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}
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#ifdef CONFIG_NFSD_V4
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static inline void nfsd_stats_wdeleg_getattr_inc(void)
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{
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percpu_counter_inc(&nfsdstats.counter[NFSD_STATS_WDELEG_GETATTR]);
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}
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#endif
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#endif /* _NFSD_STATS_H */
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