Messages in this thread |  | | | Date | Mon, 20 Apr 2009 14:42:11 +0800 | | From | Zhaolei <> | | Subject | [PATCH 0/4] ftrace, workqueuetrace: Add worklet informationame |
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Hello,
To make workqueuetrace support per-worklet's time mesurement(max execution, latecy), workqueue trace need to support per-worklet's stat information first. This patchset add them.
Before patch: # cat [debugfs]/tracing/trace_stat/workqueues # CPU INSERTED EXECUTED NAME # | | | | 0 589 589 events/0 0 0 0 cpuset 0 656 656 khelper 0 0 0 netns 0 809 809 kblockd/0 0 0 0 kacpid 0 0 0 kacpi_notify 0 0 0 ata/0 0 0 0 ata_aux 0 0 0 ksuspend_usbd 0 0 0 aio/0 0 0 0 nfsiod 0 0 0 crypto/0 0 0 0 kpsmoused 0 0 0 kstriped 0 0 0 kondemand/0 0 0 0 usbhid_resumer 0 21 21 rpciod/0
After patch: # cat [debugfs]/tracing/trace_stat/workqueues # CPU INSERTED EXECUTED TASKNAME:PID # | | | `-WORKFUNC # | | | | 0 273 273 events/0:5 0 1 1 |-reg_todo+0x0/0x648 0 4 4 |-check_corruption+0x0/0x2c 0 1 1 |-power_supply_changed_work+0x0/0x3c 0 6 6 |-console_callback+0x0/0x145 0 229 229 |-vmstat_update+0x0/0x33 0 12 12 |-do_cache_clean+0x0/0x6a 0 1 1 |-wq_barrier_func+0x0/0x12 0 15 15 |-mce_work_fn+0x0/0x31 0 3 3 |-rt_worker_func+0x0/0x2de 0 1 1 `-grace_ender+0x0/0x14 0 0 0 cpuset:6 0 659 659 khelper:7 0 659 659 `-__call_usermodehelper+0x0/0xa0 0 0 0 netns:11 0 1818 1818 kblockd/0:13 0 1115 1115 |-blk_unplug_work+0x0/0x1e 0 703 703 `-cfq_kick_queue+0x0/0x2f 0 0 0 kacpid:412 0 0 0 kacpi_notify:415 0 0 0 ata/0:463 0 0 0 ata_aux:509 0 0 0 ksuspend_usbd:515 0 0 0 aio/0:717 0 0 0 nfsiod:764 0 0 0 crypto/0:785 0 0 0 kpsmoused:1141 0 0 0 kstriped:1248 0 0 0 kondemand/0:1259 0 0 0 usbhid_resumer:1264 0 20 20 rpciod/0:1333 0 1 1 |-xs_tcp_connect_worker4+0x0/0x1b 0 19 19 `-xs_udp_connect_worker4+0x0/0x130 After this step, we'll begin to add worklet time mesurement support to workqueuetrace.
Thanks Zhaolei
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