Messages in this thread | | | Date | Tue, 24 Jan 2023 15:44:35 +0100 | From | Peter Zijlstra <> | Subject | Re: [PATCH 3/6] ftrace/x86: Warn and ignore graph tracing when RCU is disabled |
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On Mon, Jan 23, 2023 at 05:07:53PM -0500, Steven Rostedt wrote:
> Actually, perhaps we can just add this, and all you need to do is create > and set CONFIG_NO_RCU_TRACING (or some other name).
Elsewhere I've used CONFIG_ARCH_WANTS_NO_INSTR for this.
Anyway, I took it for a spin and it .... doesn't seems to do the job.
With my patch the first splat is
"RCU not on for: cpuidle_poll_time+0x0/0x70"
While with yours I seems to get the endless:
"WARNING: suspicious RCU usage"
thing. Let me see if I can figure out where it goes side-ways.
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