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authorChuck Lever <chuck.lever@oracle.com>2021-10-04 10:16:26 -0400
committerJ. Bruce Fields <bfields@redhat.com>2021-10-04 15:40:15 -0400
commit22a027e8c03f9a7794d16daa3b4b117ac6d340c3 (patch)
treed01c749279ec39f2b944d1a167293a490f9840a4 /net/sunrpc
parent45f135846815ef787b41767ad3823194de5ccfdf (diff)
SUNRPC: Add trace event when alloc_pages_bulk() makes no progress
This is an operational low memory situation that needs to be flagged. The new tracepoint records a timestamp and the nfsd thread that failed to allocate pages. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'net/sunrpc')
-rw-r--r--net/sunrpc/svc_xprt.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/net/sunrpc/svc_xprt.c b/net/sunrpc/svc_xprt.c
index 6316bd2b8f37..1e99ba1b9d72 100644
--- a/net/sunrpc/svc_xprt.c
+++ b/net/sunrpc/svc_xprt.c
@@ -687,6 +687,7 @@ static int svc_alloc_arg(struct svc_rqst *rqstp)
set_current_state(TASK_RUNNING);
return -EINTR;
}
+ trace_svc_alloc_arg_err(pages);
schedule_timeout(msecs_to_jiffies(500));
}
rqstp->rq_page_end = &rqstp->rq_pages[pages];