Function report |
Source Code:kernel\trace\trace_hwlat.c |
Create Date:2022-07-28 12:10:50 |
Last Modify:2020-03-12 14:18:49 | Copyright©Brick |
home page | Tree |
Annotation kernel can get tool activity | Download SCCT | Chinese |
Name:move_to_next_cpu
Proto:static void move_to_next_cpu(void)
Type:void
Parameter:Nothing
275 | current_mask = save_cpumask |
278 | If disable_migrate Then Return |
285 | If Not pumask_equal - *src1p == *src2p*@src1p: the first input*@src2p: the second input Then Go to disable |
288 | get_online_cpus() |
290 | next_cpu = pumask_next - get the next cpu in a cpumask*@n: the cpu prior to the place to search (ie. return will be > @n)*@srcp: the cpumask pointer* Returns >= nr_cpu_ids if no further cpus set. |
291 | put_online_cpus() |
293 | If next_cpu >= Setup number of possible processor ids Then next_cpu = Uniprocessor. Assume all masks are "1". |
296 | If next_cpu >= Setup number of possible processor ids Then Go to disable |
300 | pumask_set_cpu - set a cpu in a cpumask*@cpu: cpu number (< nr_cpu_ids)*@dstp: the cpumask pointer |
302 | sched_setaffinity(0, current_mask) |
303 | Return |
305 | disable : |
306 | disable_migrate = true |
Name | Describe |
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kthread_fn | kthread_fn - The CPU time sampling/hardware latency detection kernel thread* Used to periodically sample the CPU TSC via a call to get_sample. We* disable interrupts, which does (intentionally) introduce latency since we |
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