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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 1/3] powerpc64: make clang cross-build friendly Date: Tue, 27 Jan 2026 14:19:24 +0530 Message-ID: <20260127084926.34497-2-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: oPYrBd_Pzi4XlxD8NY6SZPti61D8Jj67 X-Authority-Analysis: v=2.4 cv=Uptu9uwB c=1 sm=1 tr=0 ts=69787c21 cx=c_pps a=3Bg1Hr4SwmMryq2xdFQyZA==:117 a=3Bg1Hr4SwmMryq2xdFQyZA==:17 a=vUbySO9Y5rIA:10 a=VkNPw1HP01LnGYTKEx00:22 a=VnNF1IyMAAAA:8 a=G_DWyleSnc-e0WChyngA:9 X-Proofpoint-ORIG-GUID: oPYrBd_Pzi4XlxD8NY6SZPti61D8Jj67 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMTI3MDA3MSBTYWx0ZWRfX/8rGKwvJBA3R Ipc79uG3sHu+qVTLgjm3vAFl/uGIkMDnGPXsIYpIe3+Nr3wfY8q97X4RuzUET+ru40OotcHiqQ+ Olw/WIEMpGm45uk5NQ5GrnK34htExPXjoDpP1OTAxuPoWP9VqK3OqYJ60Ba08xFp/pPNoJSxdbZ NHpBT9MM7Mmc7ufEMF5W6blUO3e409MjHtLPdHqNiJXP8bl7x6hd8nBkJcMVFrQFl9w0c5IlPrI ykWSAe/e7CZdSNgg7InYL8RMNAshA5CpERFtqYsIiCncf8mlg4c6qA69L1ADYNY7XXvFpTXsUZr HHh+9tXiiiEGL8CJ8Y4z+YtnY6pwBx9G4rOnxqBbMDaYJGW+pD769dxKKjSTqTbDYmLELgfCOy8 J33sF5qYLQAh6OxdiRCCiWQbMq6mtUOOA7lTmyhUQv/0AxYkpzK8cjrvHxx5kc6rmjfbArbuno6 u1YsXSYk1z9kYaeZA5Q== 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 priorityscore=1501 clxscore=1015 lowpriorityscore=0 phishscore=0 adultscore=0 impostorscore=0 bulkscore=0 spamscore=0 suspectscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2601150000 definitions=main-2601270071 ARCH_USING_PATCHABLE_FUNCTION_ENTRY depends on toolchain support for -fpatchable-function-entry option. The current script that checks for this support only handles GCC. Rename the script and extend it to detect support for -fpatchable-function-entry with Clang as well, allowing clean cross-compilation with Clang toolchains. Signed-off-by: Hari Bathini --- * Changes in v2: - Use $(CLANG_FLAGS) instead of manually checking CC_IS_CLANG arch/powerpc/Kconfig | 4 ++-- ...e-function-entry.sh => check-fpatchable-function-entry.sh} | 0 2 files changed, 2 insertions(+), 2 deletions(-) rename arch/powerpc/tools/{gcc-check-fpatchable-function-entry.sh => check-fpatchable-function-entry.sh} (100%) diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index b8d36a261009..dcb9894e2004 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -571,8 +571,8 @@ config ARCH_USING_PATCHABLE_FUNCTION_ENTRY depends on FUNCTION_TRACER && (PPC32 || PPC64_ELF_ABI_V2) depends on $(cc-option,-fpatchable-function-entry=2) def_bool y if PPC32 - def_bool $(success,$(srctree)/arch/powerpc/tools/gcc-check-fpatchable-function-entry.sh $(CC) -mlittle-endian) if PPC64 && CPU_LITTLE_ENDIAN - def_bool $(success,$(srctree)/arch/powerpc/tools/gcc-check-fpatchable-function-entry.sh $(CC) -mbig-endian) if PPC64 && CPU_BIG_ENDIAN + def_bool $(success,$(srctree)/arch/powerpc/tools/check-fpatchable-function-entry.sh $(CC) $(CLANG_FLAGS) -mlittle-endian) if PPC64 && CPU_LITTLE_ENDIAN + def_bool $(success,$(srctree)/arch/powerpc/tools/check-fpatchable-function-entry.sh $(CC) -mbig-endian) if PPC64 && CPU_BIG_ENDIAN config PPC_FTRACE_OUT_OF_LINE def_bool PPC64 && ARCH_USING_PATCHABLE_FUNCTION_ENTRY diff --git a/arch/powerpc/tools/gcc-check-fpatchable-function-entry.sh b/arch/powerpc/tools/check-fpatchable-function-entry.sh similarity index 100% rename from arch/powerpc/tools/gcc-check-fpatchable-function-entry.sh rename to arch/powerpc/tools/check-fpatchable-function-entry.sh -- 2.52.0