From nobody Wed Dec 17 21:13:40 2025 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 81851158D83; Tue, 25 Jun 2024 13:33:24 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.140.110.172 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1719322406; cv=none; b=hcUufM/zKWElDqUUfsfqWYA4j1N3fRs/tdo83SmpKaz26hAO21sfM6KaQbyIZR/WB2fAvN5byUu8eYpQaA1+/bSsjDu98c9j48Jf+syPloUlJQU4i9hvEnPFfbwj0kG6mfS/zbn9WLcS0aIBJqMyMyMq2w0Edwk+YpevV6uVW74= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1719322406; c=relaxed/simple; bh=sFCq76/ReKigOw24t2/rKzVdHlb+dXBaVLMq8dLOOwQ=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=V41iwUBiVE5afVVOyJwmJYbunJVHvxJRXJQcCFc7OAYIrozktb1ezoFNLgkVkDAbfPnJmymFP7tTPSp9vdPPgAdsBpbfH4Cg8CAn1jWvha1Ug3SyO8ag5GIqd24CugJWSkkR8vGdMThd3bb9Eu5SAfCScsCvMqRVOm808G7gr0A= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com; spf=pass smtp.mailfrom=arm.com; arc=none smtp.client-ip=217.140.110.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=arm.com Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id C4CA8DA7; Tue, 25 Jun 2024 06:33:48 -0700 (PDT) Received: from e127643.broadband (usa-sjc-mx-foss1.foss.arm.com [172.31.20.19]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 70ECF3F73B; Tue, 25 Jun 2024 06:33:20 -0700 (PDT) From: James Clark To: coresight@lists.linaro.org, suzuki.poulose@arm.com, gankulkarni@os.amperecomputing.com, mike.leach@linaro.org, leo.yan@linux.dev, anshuman.khandual@arm.com, jszu@nvidia.com, bwicaksono@nvidia.com Cc: James Clark , Alexander Shishkin , Maxime Coquelin , Alexandre Torgue , John Garry , Will Deacon , Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Namhyung Kim , Mark Rutland , Jiri Olsa , Ian Rogers , Adrian Hunter , "Liang, Kan" , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-stm32@st-md-mailman.stormreply.com, linux-perf-users@vger.kernel.org Subject: [PATCH v4 08/17] perf: cs-etm: Add runtime version check for OpenCSD Date: Tue, 25 Jun 2024 14:30:51 +0100 Message-Id: <20240625133105.671245-9-james.clark@arm.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240625133105.671245-1-james.clark@arm.com> References: <20240625133105.671245-1-james.clark@arm.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" OpenCSD is dynamically linked so although there is a build time check, at runtime the user might still have the wrong version. To avoid hard to debug errors, add a runtime version check. Signed-off-by: James Clark --- tools/build/feature/test-libopencsd.c | 4 ++-- tools/perf/Makefile.config | 2 +- tools/perf/util/cs-etm-decoder/cs-etm-decoder.c | 13 +++++++++++++ tools/perf/util/cs-etm-decoder/cs-etm-decoder.h | 1 + tools/perf/util/cs-etm-decoder/cs-etm-min-version.h | 13 +++++++++++++ tools/perf/util/cs-etm.c | 3 +++ 6 files changed, 33 insertions(+), 3 deletions(-) create mode 100644 tools/perf/util/cs-etm-decoder/cs-etm-min-version.h diff --git a/tools/build/feature/test-libopencsd.c b/tools/build/feature/te= st-libopencsd.c index 4cfcef9da3e4..d092a0c662f4 100644 --- a/tools/build/feature/test-libopencsd.c +++ b/tools/build/feature/test-libopencsd.c @@ -1,12 +1,12 @@ // SPDX-License-Identifier: GPL-2.0 #include +#include "cs-etm-decoder/cs-etm-min-version.h" =20 /* * Check OpenCSD library version is sufficient to provide required features */ -#define OCSD_MIN_VER ((1 << 16) | (2 << 8) | (1)) #if !defined(OCSD_VER_NUM) || (OCSD_VER_NUM < OCSD_MIN_VER) -#error "OpenCSD >=3D 1.2.1 is required" +#error "OpenCSD minimum version (OCSD_MIN_VER) not met." #endif =20 int main(void) diff --git a/tools/perf/Makefile.config b/tools/perf/Makefile.config index 7f1e016a9253..2d21be42820e 100644 --- a/tools/perf/Makefile.config +++ b/tools/perf/Makefile.config @@ -141,7 +141,7 @@ endif ifdef CSLIBS LIBOPENCSD_LDFLAGS :=3D -L$(CSLIBS) endif -FEATURE_CHECK_CFLAGS-libopencsd :=3D $(LIBOPENCSD_CFLAGS) +FEATURE_CHECK_CFLAGS-libopencsd :=3D $(LIBOPENCSD_CFLAGS) -I$(src-perf)/ut= il FEATURE_CHECK_LDFLAGS-libopencsd :=3D $(LIBOPENCSD_LDFLAGS) $(OPENCSDLIBS) =20 # for linking with debug library, run like: diff --git a/tools/perf/util/cs-etm-decoder/cs-etm-decoder.c b/tools/perf/u= til/cs-etm-decoder/cs-etm-decoder.c index b78ef0262135..5e1b4503aab1 100644 --- a/tools/perf/util/cs-etm-decoder/cs-etm-decoder.c +++ b/tools/perf/util/cs-etm-decoder/cs-etm-decoder.c @@ -16,6 +16,7 @@ =20 #include "cs-etm.h" #include "cs-etm-decoder.h" +#include "cs-etm-min-version.h" #include "debug.h" #include "intlist.h" =20 @@ -835,3 +836,15 @@ const char *cs_etm_decoder__get_name(struct cs_etm_dec= oder *decoder) { return decoder->decoder_name; } + +int cs_etm_decoder__check_ver(void) +{ + if (ocsd_get_version() < OCSD_MIN_VER) { + pr_err("OpenCSD >=3D %d.%d.%d is required\n", OCSD_MIN_MAJOR, + OCSD_MIN_MINOR, + OCSD_MIN_PATCH); + return -EINVAL; + } + + return 0; +} diff --git a/tools/perf/util/cs-etm-decoder/cs-etm-decoder.h b/tools/perf/u= til/cs-etm-decoder/cs-etm-decoder.h index 12c782fa6db2..2ec426ee16dc 100644 --- a/tools/perf/util/cs-etm-decoder/cs-etm-decoder.h +++ b/tools/perf/util/cs-etm-decoder/cs-etm-decoder.h @@ -107,5 +107,6 @@ int cs_etm_decoder__get_packet(struct cs_etm_packet_que= ue *packet_queue, =20 int cs_etm_decoder__reset(struct cs_etm_decoder *decoder); const char *cs_etm_decoder__get_name(struct cs_etm_decoder *decoder); +int cs_etm_decoder__check_ver(void); =20 #endif /* INCLUDE__CS_ETM_DECODER_H__ */ diff --git a/tools/perf/util/cs-etm-decoder/cs-etm-min-version.h b/tools/pe= rf/util/cs-etm-decoder/cs-etm-min-version.h new file mode 100644 index 000000000000..c69597e9d0af --- /dev/null +++ b/tools/perf/util/cs-etm-decoder/cs-etm-min-version.h @@ -0,0 +1,13 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef INCLUDE__CS_ETM_MIN_VERSION_H__ +#define INCLUDE__CS_ETM_MIN_VERSION_H__ + +#define OCSD_MIN_MAJOR 1 +#define OCSD_MIN_MINOR 2 +#define OCSD_MIN_PATCH 1 + +#define OCSD_MIN_VER ((OCSD_MIN_MAJOR << 16) | \ + (OCSD_MIN_MINOR << 8) | \ + (OCSD_MIN_PATCH)) + +#endif /* INCLUDE__CS_ETM_MIN_VERSION_H__ */ diff --git a/tools/perf/util/cs-etm.c b/tools/perf/util/cs-etm.c index 49fadf46f42b..2385d5ed5ea5 100644 --- a/tools/perf/util/cs-etm.c +++ b/tools/perf/util/cs-etm.c @@ -3369,6 +3369,9 @@ int cs_etm__process_auxtrace_info_full(union perf_eve= nt *event, u64 *ptr =3D NULL; u64 **metadata =3D NULL; =20 + if (cs_etm_decoder__check_ver()) + return -EINVAL; + /* First the global part */ ptr =3D (u64 *) auxtrace_info->priv; num_cpu =3D ptr[CS_PMU_TYPE_CPUS] & 0xffffffff; --=20 2.34.1