linux-kernel - [PATCH v3 5/6] trace/osnoise: Make use of the helper function kthread_run_on

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Message-ID: <20211022025711.3673-6-caihuoqing@baidu.com>
Date:   Fri, 22 Oct 2021 10:57:08 +0800
From:   Cai Huoqing <caihuoqing@...du.com>
To:     <rostedt@...dmis.org>
CC:     Cai Huoqing <caihuoqing@...du.com>,
        Bernard Metzler <bmt@...ich.ibm.com>,
        Doug Ledford <dledford@...hat.com>,
        Jason Gunthorpe <jgg@...pe.ca>,
        "Davidlohr Bueso" <dave@...olabs.net>,
        "Paul E. McKenney" <paulmck@...nel.org>,
        "Josh Triplett" <josh@...htriplett.org>,
        Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
        Lai Jiangshan <jiangshanlai@...il.com>,
        Joel Fernandes <joel@...lfernandes.org>,
        Ingo Molnar <mingo@...hat.com>,
        Daniel Bristot de Oliveira <bristot@...nel.org>,
        <linux-rdma@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <rcu@...r.kernel.org>
Subject: [PATCH v3 5/6] trace/osnoise: Make use of the helper function kthread_run_on_cpu()

Replace kthread_create_on_cpu/wake_up_process()
with kthread_run_on_cpu() to simplify the code.

Signed-off-by: Cai Huoqing <caihuoqing@...du.com>
---
 kernel/trace/trace_osnoise.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/kernel/trace/trace_osnoise.c b/kernel/trace/trace_osnoise.c
index ce053619f289..cbd78fd5e491 100644
--- a/kernel/trace/trace_osnoise.c
+++ b/kernel/trace/trace_osnoise.c
@@ -1525,7 +1525,7 @@ static int start_kthread(unsigned int cpu)
 #else
 	snprintf(comm, 24, "osnoise/%d", cpu);
 #endif
-	kthread = kthread_create_on_cpu(main, NULL, cpu, comm);
+	kthread = kthread_run_on_cpu(main, NULL, cpu, comm);
 
 	if (IS_ERR(kthread)) {
 		pr_err(BANNER "could not start sampling thread\n");
@@ -1534,7 +1534,6 @@ static int start_kthread(unsigned int cpu)
 	}
 
 	per_cpu(per_cpu_osnoise_var, cpu).kthread = kthread;
-	wake_up_process(kthread);
 
 	return 0;
 }
-- 
2.25.1