January 2018
Intermediate to advanced
456 pages
12h 49m
English
Content preview from Embedded Linux Development Using Yocto Project Cookbook - Second Edition
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How to do it...
The static tracing functionality is exposed via the debugfs filesystem. The functionality offered by the interface includes:
Listing events
You can see a list of available tracepoints exposed via sysfs and ordered in subsystem directories with the following:
# ls /sys/kernel/debug/tracing/events/
asoc ipi regmap
block irq regulator
cfg80211 jbd rpm
clk jbd2 sched
cma kmem scsi
coda libata signal
compaction mac80211 skb
cpufreq_interactive migrate sock
drm module spi
enable napi sunrpc
ext3 net swiotlb
ext4 nfs task
fence nfs4 thermal
filelock oom timer
filemap pagemap udp
ftrace power v4l2
gpio printk vmscan
header_event random workqueue
header_page raw_syscalls writeback
i2c rcu
Or in the available_events file with the ...
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