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Wed, 6 Oct 2021 14:07:14 +0000 (GMT) Received: from li-e8dccbcc-2adc-11b2-a85c-bc1f33b9b810.ibm.com.com (unknown [9.43.124.20]) by b06wcsmtp001.portsmouth.uk.ibm.com (Postfix) with ESMTP; Wed, 6 Oct 2021 14:07:14 +0000 (GMT) From: Kajol Jain To: mpe@ellerman.id.au, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, peterz@infradead.org, mingo@redhat.com, acme@kernel.org, jolsa@kernel.org, namhyung@kernel.org, ak@linux.intel.com Cc: linux-perf-users@vger.kernel.org, maddy@linux.ibm.com, atrajeev@linux.vnet.ibm.com, rnsastry@linux.ibm.com, yao.jin@linux.intel.com, ast@kernel.org, daniel@iogearbox.net, songliubraving@fb.com, kan.liang@linux.intel.com, mark.rutland@arm.com, alexander.shishkin@linux.intel.com, paulus@samba.org, kjain@linux.ibm.com Subject: [PATCH v3 0/4] Add mem_hops field in perf_mem_data_src structure Date: Wed, 6 Oct 2021 19:36:50 +0530 Message-Id: <20211006140654.298352-1-kjain@linux.ibm.com> X-Mailer: git-send-email 2.27.0 X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: zEICujVBASsRaBRDmaZOFLcwjaibtFJk X-Proofpoint-GUID: gJ9cnBL_oY3bFs55H4fWf606s5flQpHX Content-Transfer-Encoding: 8bit X-Proofpoint-UnRewURL: 0 URL was un-rewritten MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.182.1,Aquarius:18.0.790,Hydra:6.0.391,FMLib:17.0.607.475 definitions=2021-10-06_03,2021-10-06_01,2020-04-07_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxscore=0 spamscore=0 clxscore=1015 phishscore=0 mlxlogscore=999 priorityscore=1501 lowpriorityscore=0 adultscore=0 bulkscore=0 malwarescore=0 impostorscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2109230001 definitions=main-2110060089 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Patch set adds a new field called 'mem_hops' in the perf_mem_data_src structure which can be used to represent intra-node/package or inter-node/off-package details. This field is of size 3 bits where PERF_MEM_HOPS_{NA, 0..6} value can be used to present different hop levels data. Patch 1 of the patch-set adds a comment about current state of PERF_MEM_LVL_* namespace and remove an extra line present in perf_mem__lvl_scnprintf function. Patch 2 & 3 adds tool and kernel side changes to add mem_hops field. Patch 4 of the patch-set fix the data source encodings to represent L2.1/L3.1 cache access data for powerpc platform. Changelog: v2 -> v3 - Since added field HOPS related to NUMA, update the data presented by HOPS_0 to denotes accesses from 'remote core, same node' as suggested by Peter Zijlstra. - Link to the patchset v2: https://lkml.org/lkml/2021/10/5/271 v1 -> v2: - Rather then adding new macros for L2.1/L3.1 (same chip, different core) entries as part of field lvlnum, we are introducing new field called 'mem_hops' which can be used to get hops level data(intra-chip/package or inter-chip/off-package details). As suggested by Peter Zijlstra. - Using OnChip to denote data accesses from 'another core of same chip' is not too clear. Update it to 'remote core, same chip' as pointed by Michael Ellerman. - Update the fix patch of correcting data source encodings to use new added field 'mem_hops' - Link to the patchset v1: https://lkml.org/lkml/2021/9/4/37 Kajol Jain (4): perf: Add comment about current state of PERF_MEM_LVL_* namespace and remove an extra line perf: Add mem_hops field in perf_mem_data_src structure tools/perf: Add mem_hops field in perf_mem_data_src structure powerpc/perf: Fix data source encodings for L2.1 and L3.1 accesses arch/powerpc/perf/isa207-common.c | 26 +++++++++++++++++++++----- arch/powerpc/perf/isa207-common.h | 2 ++ include/uapi/linux/perf_event.h | 19 ++++++++++++++++--- tools/include/uapi/linux/perf_event.h | 19 ++++++++++++++++--- tools/perf/util/mem-events.c | 20 ++++++++++++++++++-- 5 files changed, 73 insertions(+), 13 deletions(-) -- 2.26.2