Messages in this thread | | | Date | Fri, 26 Aug 2022 13:17:18 +0800 | From | Leo Yan <> | Subject | Re: [PATCH RESEND v6] perf: Add SNOOP_PEER flag to perf mem data struct |
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On Fri, Aug 26, 2022 at 01:16:03PM +0800, Leo Yan wrote: > From: Ali Saidi <alisaidi@amazon.com> > > 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. The line being moved from one > peer cache to another has latency and performance implications. On Arm64 > Neoverse systems the data source can indicate a cache-to-cache transfer > but not if the line is dirty or clean, so instead of overloading HITM > define a new flag that indicates this type of transfer. > > Update notes: > > This patch is to sync the headers between kernel and user space, commit > 2e21bcf0514a ("perf tools: Sync addition of PERF_MEM_SNOOPX_PEER") for > updating kernel header has been merged in the mainline code.
Hi Peter, could you help to merge this patch? Thanks!
Leo
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