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From:   Ali Saidi <alisaidi@amazon.com>
To:     <kan.liang@linux.intel.com>
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Subject: Re: [PATCH v5 2/5] perf: Add SNOOP_PEER flag to perf mem data struct
Date:   Fri, 22 Apr 2022 18:49:34 +0000
Message-ID: <20220422184934.29270-1-alisaidi@amazon.com>
In-Reply-To: <a96681b5-5532-470e-17d1-afe4c8d195ad@linux.intel.com>
References: <a96681b5-5532-470e-17d1-afe4c8d195ad@linux.intel.com>
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On Wed, 20 Apr 2022 18:43:28, Kan Liang wrote:
> On 4/8/2022 3:53 PM, Ali Saidi wrote:
> > Add a flag to the perf mem data struct to signal that a request caused a
> > cache-to-cache transfer of a line from a peer of the requestor and
> > wasn't sourced from a lower cache level.
> 
> It sounds similar to the Forward state. Why can't the 
> PERF_MEM_SNOOPX_FWD be reused?

Is there a definition of SNOOPX_FWD i can refer to? Happy to use this instead if
the semantics align between architectures.

Thanks,

Ali