Re: [ANNOUNCE] ktap 0.1 released

[Jonathan Corbet]

On Tue, 21 May 2013 11:56:14 +0800
"zhangwei(Jovi)" <jovi.zhangwei@xxxxxxxxxx> wrote:

> we welcome bug reports and fixes for the issues.

I'm messing with it...first impression:

	unable create tracepoint event sys_enter_mmap on cpu 4, err: -19
	unable create tracepoint event sys_enter_mmap on cpu 5, err: -19
	unable create tracepoint event sys_enter_mmap on cpu 6, err: -19
	unable create tracepoint event sys_enter_mmap on cpu 7, err: -19
	[...]

Unsurprising, this is a four-core system.  The code reads:

> 	for_each_possible_cpu(cpu)
>		enable_tracepoint_on_cpu(cpu, &attr, call, arg, type);

Maybe that needs to be for_each_online_cpu() instead?

jon
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