From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0A3A217730 for ; Mon, 15 May 2023 18:04:51 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 62F67C433EF; Mon, 15 May 2023 18:04:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1684173890; bh=C9CsyIc9/EAFnFPICyiM/TZOffJtXHqPj5sGRr04apw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Hz43iQkvFkGVnZ6oo7zpRgE0WEb0kFt/WDStkuiMO7f/CKi5wKMOd6wtfhgwUgvJf Uq54NdRXXGTyw1+Tp+r0RFqY59+fvRab3Yw5l6Lx33FAhIkW4Aq+BEltBUg9NXLTIB lWDSsbIz08FLh0G6lvibFZvN+O3jyMGJ6yKIwwp0= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Adrian Hunter , Ian Rogers , Jiri Olsa , Namhyung Kim , Arnaldo Carvalho de Melo Subject: [PATCH 5.4 208/282] perf intel-pt: Fix CYC timestamps after standalone CBR Date: Mon, 15 May 2023 18:29:46 +0200 Message-Id: <20230515161728.480710199@linuxfoundation.org> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230515161722.146344674@linuxfoundation.org> References: <20230515161722.146344674@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Adrian Hunter commit 430635a0ef1ce958b7b4311f172694ece2c692b8 upstream. After a standalone CBR (not associated with TSC), update the cycles reference timestamp and reset the cycle count, so that CYC timestamps are calculated relative to that point with the new frequency. Fixes: cc33618619cefc6d ("perf tools: Add Intel PT support for decoding CYC packets") Signed-off-by: Adrian Hunter Cc: Adrian Hunter Cc: Ian Rogers Cc: Jiri Olsa Cc: Namhyung Kim Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20230403154831.8651-2-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo Signed-off-by: Greg Kroah-Hartman --- tools/perf/util/intel-pt-decoder/intel-pt-decoder.c | 2 ++ 1 file changed, 2 insertions(+) --- a/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c +++ b/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c @@ -1592,6 +1592,8 @@ static void intel_pt_calc_cbr(struct int decoder->cbr = cbr; decoder->cbr_cyc_to_tsc = decoder->max_non_turbo_ratio_fp / cbr; + decoder->cyc_ref_timestamp = decoder->timestamp; + decoder->cycle_cnt = 0; intel_pt_mtc_cyc_cnt_cbr(decoder); }