From patchwork Fri Oct 18 17:36:16 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hari Bathini X-Patchwork-Id: 13842099 Received: from mx0b-001b2d01.pphosted.com (mx0b-001b2d01.pphosted.com [148.163.158.5]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2A1722022D6; Fri, 18 Oct 2024 17:37:11 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=148.163.158.5 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729273034; cv=none; b=cCkll7YE8oMAb78tDVLxIbrxaQVXa0xfrbNFBqGROp8zUZawFKWWsKxNFNN9BOXYw7BqLYHMaqbOelPJP676Z/kOcnJvnaYiXUojCdhCHGSHwOVF0bEbTfHZomfUWUTLf+1y6o5M0VPzIk4rub1ZVqxbZRvr027xvjvxVQk9QR8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729273034; c=relaxed/simple; bh=OHa/5zWi0vXq4rcvFOVZBvchbuev/e5QhlYi7bktsvw=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=doOHhNg73qd7qFPoYg4/fM2+XOarMA9sE763yU5F/eQfaDVflVZPthjQAEX67y8x63hbj333ExnKSXqVxbxLLzZvXpqDCC5hIYGtoC9d9S3vjksHW5xrMpGxChYnu9rKG1sXP341ltculagEYR3aN+9b/lNZaKh2I7gyh8wHMaE= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.ibm.com; spf=pass smtp.mailfrom=linux.ibm.com; dkim=pass (2048-bit key) header.d=ibm.com header.i=@ibm.com header.b=govUo/QW; arc=none smtp.client-ip=148.163.158.5 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.ibm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.ibm.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=ibm.com header.i=@ibm.com header.b="govUo/QW" Received: from pps.filterd (m0356516.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 49I9m5SF015438; Fri, 18 Oct 2024 17:36:47 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=cc :content-transfer-encoding:date:from:in-reply-to:message-id :mime-version:references:subject:to; s=pp1; bh=oL9IMEzVW/uiWNE33 1Qsj0y4/iuYLMGRaqR2BGXECGI=; b=govUo/QWtIxF90G2UJGKTLmlERhRafMVx IfjDkyVwkCQ1smfyqpYHgah1XY0mAbzqeQodBGwMtMqZCRoaQh2tbsjzbStVt5Mr lvdNicvd4QRrX7dbWf/nJVywpnhRpeqlUUCDF8VP9layYK3fgK6q4gxHGscMVC41 SS6fUx3kANk1SPuBFLoM5orI2QSIUXRRX9b4MvXnNtf/GwbHqAtBGLdaK5ZE6/d+ bJABKd3I7wLVjAPvpn2/S5go1kt+z7DlhUBtyvZeycpqxmM95s/eAicoONpcTC4H yB0Mw0KrhO/qt3QgdBXfA6E0y1m4pZ0Bp/kN1xBgAlZsXIV2o6y5w== Received: from pps.reinject (localhost [127.0.0.1]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 42aqgracf6-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 18 Oct 2024 17:36:47 +0000 (GMT) Received: from m0356516.ppops.net (m0356516.ppops.net [127.0.0.1]) by pps.reinject (8.18.0.8/8.18.0.8) with ESMTP id 49IHakP3009380; Fri, 18 Oct 2024 17:36:46 GMT Received: from ppma12.dal12v.mail.ibm.com (dc.9e.1632.ip4.static.sl-reverse.com [50.22.158.220]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 42aqgracf0-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 18 Oct 2024 17:36:46 +0000 (GMT) Received: from pps.filterd (ppma12.dal12v.mail.ibm.com [127.0.0.1]) by ppma12.dal12v.mail.ibm.com (8.18.1.2/8.18.1.2) with ESMTP id 49IH7CmD006674; Fri, 18 Oct 2024 17:36:45 GMT Received: from smtprelay06.fra02v.mail.ibm.com ([9.218.2.230]) by ppma12.dal12v.mail.ibm.com (PPS) with ESMTPS id 4283ese5ru-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 18 Oct 2024 17:36:45 +0000 Received: from smtpav01.fra02v.mail.ibm.com (smtpav01.fra02v.mail.ibm.com [10.20.54.100]) by smtprelay06.fra02v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 49IHaguB32244354 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 18 Oct 2024 17:36:42 GMT Received: from smtpav01.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 3881420043; Fri, 18 Oct 2024 17:36:42 +0000 (GMT) Received: from smtpav01.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 2198B20040; Fri, 18 Oct 2024 17:36:38 +0000 (GMT) Received: from li-bd3f974c-2712-11b2-a85c-df1cec4d728e.ibm.com.com (unknown [9.43.99.188]) by smtpav01.fra02v.mail.ibm.com (Postfix) with ESMTP; Fri, 18 Oct 2024 17:36:37 +0000 (GMT) From: Hari Bathini To: linuxppc-dev , bpf@vger.kernel.org, linux-trace-kernel@vger.kernel.org, linux-kbuild@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Michael Ellerman , "Naveen N. Rao" , Mark Rutland , Daniel Borkmann , Masahiro Yamada , Nicholas Piggin , Alexei Starovoitov , Steven Rostedt , Masami Hiramatsu , Andrii Nakryiko , Christophe Leroy , Vishal Chourasia , Mahesh J Salgaonkar Subject: [PATCH v6 01/17] powerpc/trace: Account for -fpatchable-function-entry support by toolchain Date: Fri, 18 Oct 2024 23:06:16 +0530 Message-ID: <20241018173632.277333-2-hbathini@linux.ibm.com> X-Mailer: git-send-email 2.47.0 In-Reply-To: <20241018173632.277333-1-hbathini@linux.ibm.com> References: <20241018173632.277333-1-hbathini@linux.ibm.com> X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: qreVLQ2fwO0r0YyIsFvzm78eaidVgshv X-Proofpoint-GUID: 3IpwSKqhGPkW8erZ7fEpG8dlsULJrk7V X-Proofpoint-UnRewURL: 0 URL was un-rewritten Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1051,Hydra:6.0.680,FMLib:17.12.62.30 definitions=2024-10-15_01,2024-10-11_01,2024-09-30_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 phishscore=0 mlxlogscore=999 malwarescore=0 clxscore=1015 lowpriorityscore=0 adultscore=0 spamscore=0 mlxscore=0 suspectscore=0 impostorscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2409260000 definitions=main-2410180111 From: Naveen N Rao So far, we have relied on the fact that gcc supports both -mprofile-kernel, as well as -fpatchable-function-entry, and clang supports neither. Our Makefile only checks for CONFIG_MPROFILE_KERNEL to decide which files to build. Clang has a feature request out [*] to implement -fpatchable-function-entry, and is unlikely to support -mprofile-kernel. Update our Makefile checks so that we pick up the correct files to build once clang picks up support for -fpatchable-function-entry. [*] https://github.com/llvm/llvm-project/issues/57031 Signed-off-by: Naveen N Rao --- arch/powerpc/kernel/trace/Makefile | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) diff --git a/arch/powerpc/kernel/trace/Makefile b/arch/powerpc/kernel/trace/Makefile index 125f4ca588b9..d6c3885453bd 100644 --- a/arch/powerpc/kernel/trace/Makefile +++ b/arch/powerpc/kernel/trace/Makefile @@ -9,12 +9,15 @@ CFLAGS_REMOVE_ftrace.o = $(CC_FLAGS_FTRACE) CFLAGS_REMOVE_ftrace_64_pg.o = $(CC_FLAGS_FTRACE) endif -obj32-$(CONFIG_FUNCTION_TRACER) += ftrace.o ftrace_entry.o -ifdef CONFIG_MPROFILE_KERNEL -obj64-$(CONFIG_FUNCTION_TRACER) += ftrace.o ftrace_entry.o +ifdef CONFIG_FUNCTION_TRACER +obj32-y += ftrace.o ftrace_entry.o +ifeq ($(CONFIG_MPROFILE_KERNEL)$(CONFIG_ARCH_USING_PATCHABLE_FUNCTION_ENTRY),) +obj64-y += ftrace_64_pg.o ftrace_64_pg_entry.o else -obj64-$(CONFIG_FUNCTION_TRACER) += ftrace_64_pg.o ftrace_64_pg_entry.o +obj64-y += ftrace.o ftrace_entry.o +endif endif + obj-$(CONFIG_TRACING) += trace_clock.o obj-$(CONFIG_PPC64) += $(obj64-y)