On 12/15/14 8:18 PM, Chinnathambi, Muthusamy wrote:
Hi,
I wanted try perf probe, but I am getting the following failure.
[root@force perf_tests]# ./perf probe --add sys_read
Failed to find symbol sys_read in kernel
Error: Failed to add events.
Works for me:
$ perf probe sys_read
Added new event:
probe:sys_read (on sys_read)
You can now use it in all perf tools, such as:
perf record -e probe:sys_read -aR sleep 1
$ uname -r
3.6.11-4.fc16.x86_64
Also, sys_read already has a tracepoint:
syscalls:sys_enter_read [Tracepoint event]
syscalls:sys_exit_read [Tracepoint event]
David
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