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| author | Chuck Lever <chuck.lever@oracle.com> | 2023-01-10 18:32:00 +0300 |
|---|---|---|
| committer | Chuck Lever <chuck.lever@oracle.com> | 2023-02-20 17:20:32 +0300 |
| commit | ccf08bed6e7a80519569456edd2ea21b7b1701c6 (patch) | |
| tree | 5895f6b9e423350291c32b02a990a9b8d1b988ac /include/linux/sunrpc/svc.h | |
| parent | 65ba3d2425bf51165b6e88509c632bd15d12883d (diff) | |
| download | linux-ccf08bed6e7a80519569456edd2ea21b7b1701c6.tar.xz | |
SUNRPC: Replace pool stats with per-CPU variables
Eliminate the use of bus-locked operations in svc_xprt_enqueue(),
which is a hot path. Replace them with per-cpu variables to reduce
cross-CPU memory bus traffic.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Diffstat (limited to 'include/linux/sunrpc/svc.h')
| -rw-r--r-- | include/linux/sunrpc/svc.h | 15 |
1 files changed, 6 insertions, 9 deletions
diff --git a/include/linux/sunrpc/svc.h b/include/linux/sunrpc/svc.h index 1b078c9a2d60..877891536c2f 100644 --- a/include/linux/sunrpc/svc.h +++ b/include/linux/sunrpc/svc.h @@ -21,14 +21,6 @@ #include <linux/mm.h> #include <linux/pagevec.h> -/* statistics for svc_pool structures */ -struct svc_pool_stats { - atomic_long_t packets; - unsigned long sockets_queued; - atomic_long_t threads_woken; - atomic_long_t threads_timedout; -}; - /* * * RPC service thread pool. @@ -45,7 +37,12 @@ struct svc_pool { struct list_head sp_sockets; /* pending sockets */ unsigned int sp_nrthreads; /* # of threads in pool */ struct list_head sp_all_threads; /* all server threads */ - struct svc_pool_stats sp_stats; /* statistics on pool operation */ + + /* statistics on pool operation */ + struct percpu_counter sp_sockets_queued; + struct percpu_counter sp_threads_woken; + struct percpu_counter sp_threads_timedout; + #define SP_TASK_PENDING (0) /* still work to do even if no * xprt is queued. */ #define SP_CONGESTED (1) |