From: Andreas Dilger <adilger@whamcloud.com>
Date: Mon, 19 May 2025 08:17:21 +0000 (-0600)
Subject: LU-18446 ptlrpc: fix cpu_latency_work() completion time
X-Git-Tag: 2.16.56~29
X-Git-Url: https://git.whamcloud.com/?a=commitdiff_plain;h=69bf4ec09bed9ac8cd47d5f101d8de2ff4886d32;p=fs%2Flustre-release.git

LU-18446 ptlrpc: fix cpu_latency_work() completion time

Consider the cpu_latency_work() completion when it is equal to the
scheduled jiffies counter, rather than only afterward.

Fixes: 54a64ea818 ("LU-18446 ptlrpc: lower CPUs latency during client I/O")
Signed-off-by: Andreas Dilger <adilger@whamcloud.com>
Change-Id: I985d29b493bda02aa69ad54d9aae581a05fad685
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/59285
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Bruno Faccini <bfaccini@nvidia.com>
Reviewed-by: Alex Zhuravlev <bzzz@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>
---

diff --git a/lustre/ptlrpc/connection.c b/lustre/ptlrpc/connection.c
index 1adb7cb..17b3773 100644
--- a/lustre/ptlrpc/connection.c
+++ b/lustre/ptlrpc/connection.c
@@ -70,7 +70,7 @@ static void cpu_latency_work(struct work_struct *work)
 				   delayed_work.work);
 	cpu = (latency_qos - cpus_latency_qos) / sizeof(struct cpu_latency_qos);
 	mutex_lock(&latency_qos->lock);
-	if (time_after64(jiffies_64, latency_qos->deadline)) {
+	if (time_after_eq64(jiffies_64, latency_qos->deadline)) {
 		CDEBUG(D_INFO, "work item of %p (cpu %d) has reached its deadline %llu, at %llu\n",
 		       latency_qos, cpu, latency_qos->deadline, jiffies_64);
 		pm_qos_req_done = latency_qos->pm_qos_req;