root@am335x-evm:/# cd /sys/kernel/debug/tracing/events/
asoc/                    filemap/                 napi/                    regmap/                  test/
benchmark/               ftrace/                  net/                     regulator/               thermal/
block/                   gpio/                    nfs/                     rpm/                     thermal_power_allocator/
clk/                     header_event             nfs4/                    sched/                   timer/
cma/                     header_page              oom/                     signal/                  udp/
compaction/              i2c/                     pagemap/                 skb/                     v4l2/
drm/                     iommu/                   power/                   sock/                    vb2/
enable                   irq/                     printk/                  spi/                     vmscan/
ext4/                    jbd2/                    random/                  sunrpc/                  workqueue/
fence/                   kmem/                    ras/                     swiotlb/                 writeback/
fib/                     migrate/                 raw_syscalls/            syscalls/                
filelock/                module/                  rcu/                     task/

root@am335x-evm:/# zcat /proc/config.gz | grep -i "FTRACE"                                                                                     
CONFIG_HAVE_DYNAMIC_FTRACE=y
CONFIG_HAVE_FTRACE_MCOUNT_RECORD=y
CONFIG_FTRACE=y
CONFIG_FTRACE_SYSCALLS=y
CONFIG_DYNAMIC_FTRACE=y
CONFIG_FTRACE_MCOUNT_RECORD=y
CONFIG_FTRACE_SELFTEST=y
CONFIG_FTRACE_STARTUP_TEST=y
root@am335x-evm:/#