From patchwork Fri Apr 8 19:53:42 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ali Saidi X-Patchwork-Id: 12807147 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id BC80FC433EF for ; Fri, 8 Apr 2022 19:55:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=VNX1lOSL3ejGPgEvW35GHpkOUWuxgS4OI/xv+PjdKeU=; b=WuA8+ZVEtH1RC4 ZFfVdD7G5f/ag5Sv5iSwyoIV9G+D1O7nk+W8L+KiiEw1RMJGOhUAruUqHdVgsGmDTQqSBVNNYue/U wRHVKJEgRlZhJX+qp71G+GL6wfsN+wRvLQXTbe8OEmhFkq8kIq976NLZTIIUZkHYNVik4qavrDz2q Eb+2c0Ex4+guWAb3SQpO5vhsqJR2iUn21UWNL9hNRpPJTHKN+vyHMNeFSuo2kLO4sdt+q0sD0Zwon OfFLWXGEhUsESC8a9OI/7fGpcmMM7GuD2Hz+Uoe6rWzOW0j/696+DJwCWFTdMWwz+MRpUwQBUZVlU ZnLDbvWcAPtO+0DM0i/Q==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1ncugX-0015xR-LK; Fri, 08 Apr 2022 19:54:21 +0000 Received: from smtp-fw-9102.amazon.com ([207.171.184.29]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1ncugL-0015rG-DI for linux-arm-kernel@lists.infradead.org; Fri, 08 Apr 2022 19:54:11 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amazon.com; i=@amazon.com; q=dns/txt; s=amazon201209; t=1649447650; x=1680983650; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=cQvZbOGfRySa1kgB4u+TLmXxiPqef8NnczamZP/eew8=; b=XNN3mfwgIXHz66eqoP+4DvtmH8GSSfYcBc7xHm7jMnM8Qbkkqhzh/BLM w1hsEqG57fIaGEgd/fe5VEaEWBJao8jJX9j/SuvkAzBJD9yef22IxFYQq 7E+Yv3w6i3ZWJ5LghU6EX8B4tKzxk0tqSMaLqgzp84jd9hNmhv2kVg5UL U=; X-IronPort-AV: E=Sophos;i="5.90,245,1643673600"; d="scan'208";a="209212596" Received: from pdx4-co-svc-p1-lb2-vlan3.amazon.com (HELO email-inbound-relay-pdx-2a-6435a935.us-west-2.amazon.com) ([10.25.36.214]) by smtp-border-fw-9102.sea19.amazon.com with ESMTP; 08 Apr 2022 19:54:04 +0000 Received: from EX13MTAUWC002.ant.amazon.com (pdx1-ws-svc-p6-lb9-vlan2.pdx.amazon.com [10.236.137.194]) by email-inbound-relay-pdx-2a-6435a935.us-west-2.amazon.com (Postfix) with ESMTPS id 6C47A417C3; Fri, 8 Apr 2022 19:53:58 +0000 (UTC) Received: from EX13D02UWC003.ant.amazon.com (10.43.162.199) by EX13MTAUWC002.ant.amazon.com (10.43.162.240) with Microsoft SMTP Server (TLS) id 15.0.1497.32; Fri, 8 Apr 2022 19:53:56 +0000 Received: from EX13MTAUWC001.ant.amazon.com (10.43.162.135) by EX13D02UWC003.ant.amazon.com (10.43.162.199) with Microsoft SMTP Server (TLS) id 15.0.1497.32; Fri, 8 Apr 2022 19:53:56 +0000 Received: from dev-dsk-alisaidi-1d-b9a0e636.us-east-1.amazon.com (172.19.181.128) by mail-relay.amazon.com (10.43.162.232) with Microsoft SMTP Server id 15.0.1497.32 via Frontend Transport; Fri, 8 Apr 2022 19:53:56 +0000 Received: by dev-dsk-alisaidi-1d-b9a0e636.us-east-1.amazon.com (Postfix, from userid 5131138) id 750242577; Fri, 8 Apr 2022 19:53:55 +0000 (UTC) From: Ali Saidi To: , , , , , CC: , , , , , , , , , , , , , , , Subject: [PATCH v5 3/5] perf tools: sync addition of PERF_MEM_SNOOPX_PEER Date: Fri, 8 Apr 2022 19:53:42 +0000 Message-ID: <20220408195344.32764-4-alisaidi@amazon.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20220408195344.32764-1-alisaidi@amazon.com> References: <20220408195344.32764-1-alisaidi@amazon.com> MIME-Version: 1.0 Precedence: Bulk X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220408_125409_617251_F135877F X-CRM114-Status: GOOD ( 13.59 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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. Signed-off-by: Ali Saidi --- tools/include/uapi/linux/perf_event.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/include/uapi/linux/perf_event.h b/tools/include/uapi/linux/perf_event.h index 82858b697c05..c9e58c79f3e5 100644 --- a/tools/include/uapi/linux/perf_event.h +++ b/tools/include/uapi/linux/perf_event.h @@ -1308,7 +1308,7 @@ union perf_mem_data_src { #define PERF_MEM_SNOOP_SHIFT 19 #define PERF_MEM_SNOOPX_FWD 0x01 /* forward */ -/* 1 free */ +#define PERF_MEM_SNOOPX_PEER 0x02 /* xfer from peer */ #define PERF_MEM_SNOOPX_SHIFT 38 /* locked instruction */