linux-kernel - Re: [PATCH] tracing/trace: apply filters on all output channels

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Message-ID: <20210816110139.13a433a7@oasis.local.home>
Date:   Mon, 16 Aug 2021 11:02:12 -0400
From:   Steven Rostedt <rostedt@...dmis.org>
To:     Pingfan Liu <kernelfans@...il.com>
Cc:     linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...hat.com>
Subject: Re: [PATCH] tracing/trace: apply filters on all output channels

On Sat, 14 Aug 2021 11:45:38 +0800
Pingfan Liu <kernelfans@...il.com> wrote:

> The event filters are not applied on all of the output, which results in
> the flood of printk when using tp_printk. Unfolding
> event_trigger_unlock_commit_regs() into trace_event_buffer_commit(), so
> the filters can be applied on every output.

Nice.

I'll even add a stable tag and:

Fixes: 0daa2302968c1 ("tracing: Add tp_printk cmdline to have tracepoints go to printk()")

and push this to urgent.

Thanks,

-- Steve


> 
> Signed-off-by: Pingfan Liu <kernelfans@...il.com>
> Cc: Steven Rostedt <rostedt@...dmis.org>
> Cc: Ingo Molnar <mingo@...hat.com>
> To: linux-kernel@...r.kernel.org
> ---