linux-kernel - Re: Re: [PATCH 3/4] uprobes/tracing: Kill the pointless local_save_flags/preempt

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Message-ID: <20130405150110.GA31300@redhat.com>
Date:	Fri, 5 Apr 2013 17:01:10 +0200
From:	Oleg Nesterov <oleg@...hat.com>
To:	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>
Cc:	Srikar Dronamraju <srikar@...ux.vnet.ibm.com>,
	Ananth N Mavinakayanahalli <ananth@...ibm.com>,
	Steven Rostedt <rostedt@...dmis.org>,
	Anton Arapov <anton@...hat.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Ingo Molnar <mingo@...hat.com>, linux-kernel@...r.kernel.org
Subject: Re: Re: [PATCH 3/4] uprobes/tracing: Kill the pointless
	local_save_flags/preempt_count calls

On 04/05, Masami Hiramatsu wrote:
>
> Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>

Thanks!

Masami, perhaps you can also answer the question I asked in 0/4
marc.info/?l=linux-kernel&m=136458107403835 ?

	Off-topic question... Why uprobe_perf_func() passes "addr = ip" to
	perf_trace_buf_submit() ? This just sets perf_sample_data->addr for
	PERF_SAMPLE_ADDR, do we really need this? and we already have
	perf_sample_data->ip initialized by perf.

kprobe_perf_func() and kretprobe_perf_func() do the same.

Once again, I am just curious and this is completely offtopic.

Oleg.

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