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ring-buffer: make use of the helper function kthread_run_on_cpu()

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

Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Cai Huoqing <[email protected]>
Cc: Bernard Metzler <[email protected]>
Cc: Daniel Bristot de Oliveira <[email protected]>
Cc: Davidlohr Bueso <[email protected]>
Cc: Doug Ledford <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Jason Gunthorpe <[email protected]>
Cc: Joel Fernandes (Google) <[email protected]>
Cc: Josh Triplett <[email protected]>
Cc: Lai Jiangshan <[email protected]>
Cc: Mathieu Desnoyers <[email protected]>
Cc: "Paul E . McKenney" <[email protected]>
Cc: Steven Rostedt <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Cai Huoqing authored and Linus Torvalds committed 2022-01-15 16:30:23 +02:00
1 parent e085011393
commit 64ed3a049e
1 file changed
+2 -5
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kernel/trace/ring_buffer.c
+2 -5
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@@ -5898,16 +5898,13 @@ static __init int test_ringbuffer(void)
rb_data[cpu].buffer = buffer;
rb_data[cpu].cpu = cpu;
rb_data[cpu].cnt = cpu;
rb_threads[cpu] = kthread_create(rb_test, &rb_data[cpu],
"rbtester/%d", cpu);
rb_threads[cpu] = kthread_run_on_cpu(rb_test, &rb_data[cpu],
cpu, "rbtester/%u");
if (WARN_ON(IS_ERR(rb_threads[cpu]))) {
pr_cont("FAILED\n");
ret = PTR_ERR(rb_threads[cpu]);
goto out_free;
}
kthread_bind(rb_threads[cpu], cpu);
wake_up_process(rb_threads[cpu]);
}
/* Now create the rb hammer! */