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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 2/3] powerpc64/ftrace: fix OOL stub count with clang Date: Sun, 9 Nov 2025 02:34:04 +0530 Message-ID: <20251108210405.2375472-3-hbathini@linux.ibm.com> X-Mailer: git-send-email 2.51.1 In-Reply-To: <20251108210405.2375472-1-hbathini@linux.ibm.com> References: <20251108210405.2375472-1-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-Spam-Details-Enc: AW1haW4tMjUxMTA4MDAyMiBTYWx0ZWRfX8ztZNdLPqbMF ZFBxVelXW1dta9J3KqhQkDmzut05gdI3RDCl5JiRbkKUDzHLu9+zhot3rCgRIaJ4VShTDq6V9pz LTYMU7XjnhIUwqh+/k4u2pRVn6j/VD0kUTQyL8woZGZgPo+jwQ9ELNvisl4m/QUM71F/AqYYfx1 j3BhCZLwxmwqpy0X5A9zCEXe/+QuaUJOGXfAFxXGzzXi+1kp/8r+l0Z8gK70aVArgeMKGdwDVsK a4Z6nGejFj/4ObGvDdkhE0JUjqPMss08wAQ8LWUi/NcQ8Ek/4/fZAom64/2siygv4f2T24iHYhs iRr7Uoo5jLOpbUzz9udJMwqvkwbQ0KPScex6y12A/ewKJUiJGmZQ07d67hMeHhhEi2WWXTVt4Vm uFmBMd94UwG57JuyloFnvSXDpvnjkg== X-Authority-Analysis: v=2.4 cv=ZK3aWH7b c=1 sm=1 tr=0 ts=690fb053 cx=c_pps a=AfN7/Ok6k8XGzOShvHwTGQ==:117 a=AfN7/Ok6k8XGzOShvHwTGQ==:17 a=6UeiqGixMTsA:10 a=VkNPw1HP01LnGYTKEx00:22 a=VnNF1IyMAAAA:8 a=_5KToPWuY_tjwTr7hf0A:9 a=cPQSjfK2_nFv0Q5t_7PE:22 X-Proofpoint-ORIG-GUID: nOJm6e4pw_gejLF9cJ6muhTlNzEZ9zBz X-Proofpoint-GUID: nOJm6e4pw_gejLF9cJ6muhTlNzEZ9zBz 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=2025-11-08_06,2025-11-06_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 lowpriorityscore=0 priorityscore=1501 suspectscore=0 phishscore=0 impostorscore=0 spamscore=0 bulkscore=0 adultscore=0 clxscore=1011 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2510240000 definitions=main-2511080022 The total number of out-of-line (OOL) stubs required for function tracing is determined using the following command: $(OBJDUMP) -r -j __patchable_function_entries vmlinux.o While this works correctly with GNU objdump, llvm-objdump does not list the expected relocation records for this section. Fix this by using the -d option and counting R_PPC64_ADDR64 relocation entries. This works as desired with both objdump and llvm-objdump. Signed-off-by: Hari Bathini --- arch/powerpc/tools/ftrace-gen-ool-stubs.sh | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/powerpc/tools/ftrace-gen-ool-stubs.sh b/arch/powerpc/tools/ftrace-gen-ool-stubs.sh index bac186bdf64a..9218d43aeb54 100755 --- a/arch/powerpc/tools/ftrace-gen-ool-stubs.sh +++ b/arch/powerpc/tools/ftrace-gen-ool-stubs.sh @@ -15,9 +15,9 @@ if [ -z "$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)) -- 2.51.1