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| author |   Chuck Lever <chuck.lever@oracle.com> | 2021-10-04 10:10:10 -0400 |
|---|---|---|
| committer |   Trond Myklebust <trond.myklebust@hammerspace.com> | 2021-10-10 11:05:54 +0200 |
| commit | 0392dd51f9c78d46109a408f27dc820300dcd8bd (patch) | |
| tree | f3b4644162169edcdde27b972e2c9c36ec35fe2f /net | |
| parent | NFS: Remove unnecessary TRACE_DEFINE_ENUM()s (diff) | |
| download | linux-dev-0392dd51f9c78d46109a408f27dc820300dcd8bd.tar.xz linux-dev-0392dd51f9c78d46109a408f27dc820300dcd8bd.zip | |
SUNRPC: Per-rpc_clnt task PIDs
The current range of RPC task PIDs is 0..65535. That's not adequate
for distinguishing tasks across multiple rpc_clnts running high
throughput workloads.
To help relieve this situation and to reduce the bottleneck of
having a single atomic for assigning all RPC task PIDs, assign task
PIDs per rpc_clnt.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Diffstat (limited to 'net')
| -rw-r--r-- | net/sunrpc/sched.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/net/sunrpc/sched.c b/net/sunrpc/sched.c index b21457cec8a5..f4f311ea7a66 100644 --- a/net/sunrpc/sched.c +++ b/net/sunrpc/sched.c @@ -277,9 +277,17 @@ static int rpc_wait_bit_killable(struct wait_bit_key *key, int mode) #if IS_ENABLED(CONFIG_SUNRPC_DEBUG) || IS_ENABLED(CONFIG_TRACEPOINTS) static void rpc_task_set_debuginfo(struct rpc_task *task) { - static atomic_t rpc_pid; + struct rpc_clnt *clnt = task->tk_client; - task->tk_pid = atomic_inc_return(&rpc_pid); + /* Might be a task carrying a reverse-direction operation */ + if (!clnt) { + static atomic_t rpc_pid; + + task->tk_pid = atomic_inc_return(&rpc_pid); + return; + } + + task->tk_pid = atomic_inc_return(&clnt->cl_pid); } #else static inline void rpc_task_set_debuginfo(struct rpc_task *task) |