linux-kernel - Re: [RFC v2] perf: Rewrite core context handling

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Message-ID: <YwOgxhfS99Rquwct@worktop.programming.kicks-ass.net>
Date:   Mon, 22 Aug 2022 17:29:10 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     Ravi Bangoria <ravi.bangoria@....com>
Cc:     acme@...nel.org, alexander.shishkin@...ux.intel.com,
        jolsa@...hat.com, namhyung@...nel.org, songliubraving@...com,
        eranian@...gle.com, alexey.budankov@...ux.intel.com,
        ak@...ux.intel.com, mark.rutland@....com, megha.dey@...el.com,
        frederic@...nel.org, maddy@...ux.ibm.com, irogers@...gle.com,
        kim.phillips@....com, linux-kernel@...r.kernel.org,
        santosh.shukla@....com
Subject: Re: [RFC v2] perf: Rewrite core context handling

On Tue, Aug 02, 2022 at 11:41:42AM +0530, Ravi Bangoria wrote:
> 
> > pulling up the ctx->mutex makes things simpler, but also violates the
> > locking order vs exec_update_lock.
> > 
> > Pull that lock up as well...
> 
> I'm not able to apply this patch as is but I get the idea. Few
> questions below...

I was just about to rebase the 'series' to current, let me do that and
get back to you on the specifics.