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Rao" , Michael Ellerman , linux-trace-kernel@vger.kernel.org, Mark Rutland , Steven Rostedt , Masami Hiramatsu , llvm@lists.linux.dev, Maryam Moghadas Subject: [PATCH v2 2/3] powerpc64/ftrace: fix OOL stub count with clang Date: Tue, 27 Jan 2026 14:19:25 +0530 Message-ID: <20260127084926.34497-3-hbathini@linux.ibm.com> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260127084926.34497-1-hbathini@linux.ibm.com> References: <20260127084926.34497-1-hbathini@linux.ibm.com> Precedence: bulk X-Mailing-List: linux-trace-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-GUID: AQFmo85ljkW9szpQpX_RcaVUI2tkXMHG X-Proofpoint-ORIG-GUID: AQFmo85ljkW9szpQpX_RcaVUI2tkXMHG X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMTI3MDA3MSBTYWx0ZWRfX9ICBxqyqtKAi pdFxxxI5MhMLVYFn9auSWUPL6RDpdlBdp25b4+Et2XInIyObIBNJN/NNnIhhruKU5P7ua7NCAHC HJnK0Vo72psw9myp+IR1U4tg4LNXzRINDADXEw1cNCe/B5dNzDeuicd0cZsizK8AUxuinDQ+M3j /gZsUdBrr9DoYEXIG/HnmY/6RW2PYBMnLG1C48HN+WcJ174iBjyNBz47y4O+cE9QrpG51WrSSs9 KVeksFjD2kYZ/p2KUroRoEI0rWiNZYonCnNV/NgEHyY3Z2JCtvVry+H3wvKb4DxH/V4oAH5Hl2L udGZkkAV+iJ8U5cKa/u3McjqWNmEBI1QFI4xLZmuOUysabNWqn+lZV3rXmXhCYGX3/Rg+jR3THn 68JiZh1B4R1IMXdFQlRvKiXRvzKCD0E4Q+pq0XwCcsIM6uWkuUZwxJrJ0c6kiJVDecw2zflZbGx J+IUpLWl/V2O2nFACmA== X-Authority-Analysis: v=2.4 cv=AMiVTGgp c=1 sm=1 tr=0 ts=69787c24 cx=c_pps a=aDMHemPKRhS1OARIsFnwRA==:117 a=aDMHemPKRhS1OARIsFnwRA==:17 a=vUbySO9Y5rIA:10 a=VkNPw1HP01LnGYTKEx00:22 a=VnNF1IyMAAAA:8 a=_5KToPWuY_tjwTr7hf0A:9 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.20,FMLib:17.12.100.49 definitions=2026-01-27_01,2026-01-26_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 spamscore=0 phishscore=0 bulkscore=0 suspectscore=0 adultscore=0 clxscore=1015 priorityscore=1501 lowpriorityscore=0 impostorscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2601150000 definitions=main-2601270071 The total number of out-of-line (OOL) stubs required for function tracing is determined using the following command: $(OBJDUMP) -r -j __patchable_function_entries vmlinux.o While this works correctly with GNU objdump, llvm-objdump does not list the expected relocation records for this section. Fix this by using the -d option and counting R_PPC64_ADDR64 relocation entries. This works as desired with both objdump and llvm-objdump. Signed-off-by: Hari Bathini --- * No changes since v1. arch/powerpc/tools/ftrace-gen-ool-stubs.sh | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/powerpc/tools/ftrace-gen-ool-stubs.sh b/arch/powerpc/tools/ftrace-gen-ool-stubs.sh index bac186bdf64a..9218d43aeb54 100755 --- a/arch/powerpc/tools/ftrace-gen-ool-stubs.sh +++ b/arch/powerpc/tools/ftrace-gen-ool-stubs.sh @@ -15,9 +15,9 @@ if [ -z "$is_64bit" ]; then RELOCATION=R_PPC_ADDR32 fi -num_ool_stubs_total=$($objdump -r -j __patchable_function_entries "$vmlinux_o" | +num_ool_stubs_total=$($objdump -r -j __patchable_function_entries -d "$vmlinux_o" | grep -c "$RELOCATION") -num_ool_stubs_inittext=$($objdump -r -j __patchable_function_entries "$vmlinux_o" | +num_ool_stubs_inittext=$($objdump -r -j __patchable_function_entries -d "$vmlinux_o" | grep -e ".init.text" -e ".text.startup" | grep -c "$RELOCATION") num_ool_stubs_text=$((num_ool_stubs_total - num_ool_stubs_inittext)) -- 2.52.0