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Date:   Thu, 14 Sep 2023 13:18:45 +0200
From:   Peter Zijlstra <peterz@infradead.org>
To:     Breno Leitao <leitao@debian.org>
Cc:     Sandipan Das <sandipan.das@amd.com>,
        Jirka Hladky <jhladky@redhat.com>,
        Ingo Molnar <mingo@redhat.com>,
        Arnaldo Carvalho de Melo <acme@kernel.org>,
        Mark Rutland <mark.rutland@arm.com>,
        Alexander Shishkin <alexander.shishkin@linux.intel.com>,
        Jiri Olsa <jolsa@kernel.org>,
        Namhyung Kim <namhyung@kernel.org>,
        Ian Rogers <irogers@google.com>,
        Adrian Hunter <adrian.hunter@intel.com>,
        Thomas Gleixner <tglx@linutronix.de>,
        Borislav Petkov <bp@alien8.de>,
        Dave Hansen <dave.hansen@linux.intel.com>, x86@kernel.org,
        "H. Peter Anvin" <hpa@zytor.com>, leit@fb.com,
        dcostantino@meta.com,
        "open list:PERFORMANCE EVENTS SUBSYSTEM" 
        <linux-perf-users@vger.kernel.org>,
        "open list:PERFORMANCE EVENTS SUBSYSTEM" 
        <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] perf/x86/amd: Do not WARN on every IRQ
Message-ID: <20230914111845.GF16631@noisy.programming.kicks-ass.net>
References: <20230616115316.3652155-1-leitao@debian.org>
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 <f06ef3dd-dd71-4ba4-a4fa-18a08788c035@amd.com>
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On Thu, Sep 14, 2023 at 02:30:43AM -0700, Breno Leitao wrote:
> On Thu, Sep 14, 2023 at 11:12:34AM +0200, Peter Zijlstra wrote:
> > On Thu, Sep 14, 2023 at 02:25:40PM +0530, Sandipan Das wrote:
> 
> > > I agree with using WARN_ON_ONCE() to make this less intrusive.
> > 
> > Could you send a patch that AMD is happy with?
> 
> Why the current patch is not good enough?

Sandipan, can you answer this? I don't tihnk I'm qualified to speak for
the AMD pmu and certainly I don't have insight into their design future.