From: Cai Huoqing <caihuoqing@baidu.com>
To: <caihuoqing@baidu.com>
Cc: Bernard Metzler <bmt@zurich.ibm.com>,
Doug Ledford <dledford@redhat.com>,
Jason Gunthorpe <jgg@ziepe.ca>,
Davidlohr Bueso <dave@stgolabs.net>,
"Paul E. McKenney" <paulmck@kernel.org>,
Josh Triplett <josh@joshtriplett.org>,
"Steven Rostedt" <rostedt@goodmis.org>,
Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
Lai Jiangshan <jiangshanlai@gmail.com>,
Joel Fernandes <joel@joelfernandes.org>,
Ingo Molnar <mingo@redhat.com>,
Daniel Bristot de Oliveira <bristot@kernel.org>,
<linux-rdma@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
<rcu@vger.kernel.org>
Subject: [PATCH v2 6/6] trace/hwlat: Make use of the helper macro kthread_run_on_cpu()
Date: Thu, 21 Oct 2021 20:27:57 +0800 [thread overview]
Message-ID: <20211021122758.3092-7-caihuoqing@baidu.com> (raw)
In-Reply-To: <20211021122758.3092-1-caihuoqing@baidu.com>
Repalce kthread_create_on_cpu/wake_up_process()
with kthread_run_on_cpu() to simplify the code.
Signed-off-by: Cai Huoqing <caihuoqing@baidu.com>
---
v1->v2: Update changelog.
kernel/trace/trace_hwlat.c | 6 +-----
1 file changed, 1 insertion(+), 5 deletions(-)
diff --git a/kernel/trace/trace_hwlat.c b/kernel/trace/trace_hwlat.c
index 1b83d75eb103..0e555335f095 100644
--- a/kernel/trace/trace_hwlat.c
+++ b/kernel/trace/trace_hwlat.c
@@ -491,18 +491,14 @@ static void stop_per_cpu_kthreads(void)
static int start_cpu_kthread(unsigned int cpu)
{
struct task_struct *kthread;
- char comm[24];
- snprintf(comm, 24, "hwlatd/%d", cpu);
-
- kthread = kthread_create_on_cpu(kthread_fn, NULL, cpu, comm);
+ kthread = kthread_run_on_cpu(kthread_fn, NULL, cpu, "hwlatd/%u");
if (IS_ERR(kthread)) {
pr_err(BANNER "could not start sampling thread\n");
return -ENOMEM;
}
per_cpu(hwlat_per_cpu_data, cpu).kthread = kthread;
- wake_up_process(kthread);
return 0;
}
--
2.25.1
next prev parent reply other threads:[~2021-10-21 12:28 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-21 12:27 [PATCH v2 0/6] kthread: Add the helper macro kthread_run_on_cpu() Cai Huoqing
2021-10-21 12:27 ` [PATCH v2 1/6] " Cai Huoqing
2021-10-21 12:27 ` [PATCH v2 2/6] RDMA/siw: Make use of " Cai Huoqing
2021-10-21 22:56 ` kernel test robot
2021-10-21 22:56 ` kernel test robot
2021-10-21 12:27 ` [PATCH v2 3/6] ring-buffer: " Cai Huoqing
2021-10-21 12:27 ` [PATCH v2 4/6] rcutorture: " Cai Huoqing
2021-10-21 12:27 ` [PATCH v2 5/6] trace/osnoise: " Cai Huoqing
2021-10-21 12:27 ` Cai Huoqing [this message]
2021-10-21 16:31 ` [PATCH v2 6/6] trace/hwlat: " Bart Van Assche
2021-10-21 16:31 ` [PATCH v2 0/6] kthread: Add " Bart Van Assche
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