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Fri, 21 Nov 2025 06:26:35 GMT Received: from smtpav07.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 450E820043; Fri, 21 Nov 2025 06:26:35 +0000 (GMT) Received: from smtpav07.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 8515820040; Fri, 21 Nov 2025 06:26:34 +0000 (GMT) Received: from [9.111.16.202] (unknown [9.111.16.202]) by smtpav07.fra02v.mail.ibm.com (Postfix) with ESMTP; Fri, 21 Nov 2025 06:26:34 +0000 (GMT) Message-ID: <947ef366-435d-4b05-b0b1-685e569d0a1e@linux.ibm.com> Date: Fri, 21 Nov 2025 07:26:34 +0100 Precedence: bulk X-Mailing-List: linux-perf-users@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v6 3/6] perf record: Add --call-graph fp,defer option for deferred callchains To: Namhyung Kim , Arnaldo Carvalho de Melo , Ian Rogers , James Clark Cc: Jiri Olsa , Adrian Hunter , Peter Zijlstra , Ingo Molnar , LKML , linux-perf-users@vger.kernel.org, Steven Rostedt , Josh Poimboeuf , Indu Bhagat , Jens Remus , Mathieu Desnoyers , linux-trace-kernel@vger.kernel.org, bpf@vger.kernel.org References: <20251120234804.156340-1-namhyung@kernel.org> <20251120234804.156340-4-namhyung@kernel.org> Content-Language: en-US From: Thomas Richter Organization: IBM In-Reply-To: <20251120234804.156340-4-namhyung@kernel.org> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Authority-Analysis: v=2.4 cv=C/nkCAP+ c=1 sm=1 tr=0 ts=6920061f cx=c_pps a=3Bg1Hr4SwmMryq2xdFQyZA==:117 a=3Bg1Hr4SwmMryq2xdFQyZA==:17 a=IkcTkHD0fZMA:10 a=6UeiqGixMTsA:10 a=VkNPw1HP01LnGYTKEx00:22 a=MGucU4rsRRrPEl4HSeQA:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 X-Proofpoint-GUID: DdontG2BWgp9fdEXp43uc2-XCLm970VD X-Proofpoint-ORIG-GUID: Uh4AtN1LKgtJqEkg07QDvq90ML58U1VZ X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUxMTE1MDAzMiBTYWx0ZWRfX7Y9jnqhzl7c6 oGcuPtwZ2GmgessOB5Lb+/hK9v+i/6lgKy0zqm0V5R67NJpFGfCGn3JMLE+60qJ1V9CE4mjpEAC w3jdVKAUhz0b2f5ad2YY/DV7X8mIb9/iSEDSfFFk+wvO/dA+qXkQJgCss55VrVQdftwk/FdF8XC IbJkALqvntxsgpHXcJT7hBsKxMFBYheHzC6cG+yGYiXILCye8eZzEkhxQL1RhtxQh5eJDC3gxBs //oPZp3T+OpCz4DqHpossygQjTna8Puv/RBssBWHh5vVmW7DgI1EIJy6Crc7KozoQ8Qe7g++pss ijiaHsk+GVT+f6tVuOzDnETPN8k1GaK8UjE7MNZib5G9c/dvQFKYmXNv9x9X/Fr1zLLtzt1PXEi xkh/I4YPRgHCtlrKb8VfYVn2kQSGAg== X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.9,FMLib:17.12.100.49 definitions=2025-11-21_02,2025-11-20_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 priorityscore=1501 spamscore=0 impostorscore=0 bulkscore=0 malwarescore=0 suspectscore=0 clxscore=1011 lowpriorityscore=0 adultscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2510240000 definitions=main-2511150032 On 11/21/25 00:48, Namhyung Kim wrote: > Add a new callchain record mode option for deferred callchains. For now > it only works with FP (frame-pointer) mode. > > And add the missing feature detection logic to clear the flag on old > kernels. > > $ perf record --call-graph fp,defer -vv true Does this also works for dwarf format? # perf record --call-graph dwarf,defer .... -- Thomas Richter, Dept 3303, IBM s390 Linux Development, Boeblingen, Germany -- IBM Deutschland Research & Development GmbH Vorsitzender des Aufsichtsrats: Wolfgang Wendt Geschäftsführung: David Faller Sitz der Gesellschaft: Böblingen / Registergericht: Amtsgericht Stuttgart, HRB 243294