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Tue, 23 Apr 2024 16:02:07 GMT Received: from pps.reinject (localhost [127.0.0.1]) by iadpaimrmta01.imrmtpd1.prodappiadaev1.oraclevcn.com (PPS) with ESMTPS id 3xpbf3e6xb-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 23 Apr 2024 16:02:07 +0000 Received: from iadpaimrmta01.imrmtpd1.prodappiadaev1.oraclevcn.com (iadpaimrmta01.imrmtpd1.prodappiadaev1.oraclevcn.com [127.0.0.1]) by pps.reinject (8.17.1.5/8.17.1.5) with ESMTP id 43NG24nV038435; Tue, 23 Apr 2024 16:02:06 GMT Received: from bpf.uk.oracle.com (dhcp-10-175-173-44.vpn.oracle.com [10.175.173.44]) by iadpaimrmta01.imrmtpd1.prodappiadaev1.oraclevcn.com (PPS) with ESMTP id 3xpbf3e6pt-2; Tue, 23 Apr 2024 16:02:06 +0000 From: Alan Maguire To: acme@kernel.org Cc: dxu@dxuuu.xyz, dwarves@vger.kernel.org, andrii.nakryiko@gmail.com, jolsa@kernel.org, williams@redhat.com, kcarcia@redhat.com, bpf@vger.kernel.org, eddyz87@gmail.com, Alan Maguire Subject: [PATCH dwarves 1/2] pahole: replace use of "all" with "default" for --btf_features Date: Tue, 23 Apr 2024 17:01:59 +0100 Message-Id: <20240423160200.3139270-2-alan.maguire@oracle.com> X-Mailer: git-send-email 2.39.3 In-Reply-To: <20240423160200.3139270-1-alan.maguire@oracle.com> References: <20240423160200.3139270-1-alan.maguire@oracle.com> 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:18.0.1011,Hydra:6.0.650,FMLib:17.11.176.26 definitions=2024-04-23_12,2024-04-23_02,2023-05-22_02 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 malwarescore=0 mlxlogscore=999 mlxscore=0 phishscore=0 spamscore=0 adultscore=0 bulkscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2404010000 definitions=main-2404230037 X-Proofpoint-GUID: 5hYXP-I0bOJ5tiPLEP1e3sjBrUU3ftF4 X-Proofpoint-ORIG-GUID: 5hYXP-I0bOJ5tiPLEP1e3sjBrUU3ftF4 It is confusing that --btf_features allows specification of "all" features and additional non-standard features like "reproducible_build" so rename "all" to "default". To make the code clearer, avoid other references to default values of --btf_features values, replacing these with references to the initial value. Signed-off-by: Alan Maguire --- man-pages/pahole.1 | 4 +-- pahole.c | 75 ++++++++++++++++++++++++---------------------- 2 files changed, 41 insertions(+), 38 deletions(-) diff --git a/man-pages/pahole.1 b/man-pages/pahole.1 index 64de343..92ebf8f 100644 --- a/man-pages/pahole.1 +++ b/man-pages/pahole.1 @@ -290,7 +290,7 @@ Allow using all the BTF features supported by pahole. .TP .B \-\-btf_features=FEATURE_LIST -Encode BTF using the specified feature list, or specify 'all' for all standard features supported. This option can be used as an alternative to unsing multiple BTF-related options. Supported standard features are +Encode BTF using the specified feature list, or specify 'default' for all standard features supported. This option can be used as an alternative to unsing multiple BTF-related options. Supported standard features are .nf encode_force Ignore invalid symbols when encoding BTF; for example @@ -310,7 +310,7 @@ Encode BTF using the specified feature list, or specify 'all' for all standard f in different CUs. .fi -Supported non-standard features (not enabled for 'all') +Supported non-standard features (not enabled for 'default') .nf reproducible_build Ensure generated BTF is consistent every time; diff --git a/pahole.c b/pahole.c index 38cc636..8458475 100644 --- a/pahole.c +++ b/pahole.c @@ -1239,11 +1239,11 @@ ARGP_PROGRAM_VERSION_HOOK_DEF = dwarves_print_version; #define ARGP_reproducible_build 345 /* --btf_features=feature1[,feature2,..] allows us to specify - * a list of requested BTF features or "all" to enable all features. - * These are translated into the appropriate conf_load values via a - * struct btf_feature which specifies the associated conf_load - * boolean field and whether its default (representing the feature being - * off) is false or true. + * a list of requested BTF features or "default" to enable all default + * features. These are translated into the appropriate conf_load values + * via a struct btf_feature which specifies the associated conf_load + * boolean field and whether its initial value (representing the feature + * being off) is false or true. * * btf_features is for opting _into_ features so for a case like * conf_load->btf_gen_floats, the translation is simple; the presence @@ -1262,51 +1262,54 @@ ARGP_PROGRAM_VERSION_HOOK_DEF = dwarves_print_version; * --btf_features are enabled, and if a feature is not specified, * it is disabled. * - * If --btf_features is not used, the usual pahole defaults for + * If --btf_features is not used, the usual pahole values for * BTF encoding apply; we encode type/decl tags, do not encode * floats, etc. This ensures backwards compatibility. */ -#define BTF_FEATURE(name, alias, default_value, enable_for_all) \ - { #name, #alias, &conf_load.alias, default_value, enable_for_all } +#define BTF_DEFAULT_FEATURE(name, alias, initial_value) \ + { #name, #alias, &conf_load.alias, initial_value, true } + +#define BTF_NON_DEFAULT_FEATURE(name, alias, initial_value) \ + { #name, #alias, &conf_load.alias, initial_value, false } struct btf_feature { const char *name; const char *option_alias; bool *conf_value; - bool default_value; - bool enable_for_all; /* some nonstandard features may not - * be enabled for --btf_features=all - */ + bool initial_value; + bool default_enabled; /* some nonstandard features may not + * be enabled for --btf_features=default + */ } btf_features[] = { - BTF_FEATURE(encode_force, btf_encode_force, false, true), - BTF_FEATURE(var, skip_encoding_btf_vars, true, true), - BTF_FEATURE(float, btf_gen_floats, false, true), - BTF_FEATURE(decl_tag, skip_encoding_btf_decl_tag, true, true), - BTF_FEATURE(type_tag, skip_encoding_btf_type_tag, true, true), - BTF_FEATURE(enum64, skip_encoding_btf_enum64, true, true), - BTF_FEATURE(optimized_func, btf_gen_optimized, false, true), - BTF_FEATURE(consistent_func, skip_encoding_btf_inconsistent_proto, false, true), - BTF_FEATURE(reproducible_build, reproducible_build, false, false), + BTF_DEFAULT_FEATURE(encode_force, btf_encode_force, false), + BTF_DEFAULT_FEATURE(var, skip_encoding_btf_vars, true), + BTF_DEFAULT_FEATURE(float, btf_gen_floats, false), + BTF_DEFAULT_FEATURE(decl_tag, skip_encoding_btf_decl_tag, true), + BTF_DEFAULT_FEATURE(type_tag, skip_encoding_btf_type_tag, true), + BTF_DEFAULT_FEATURE(enum64, skip_encoding_btf_enum64, true), + BTF_DEFAULT_FEATURE(optimized_func, btf_gen_optimized, false), + BTF_DEFAULT_FEATURE(consistent_func, skip_encoding_btf_inconsistent_proto, false), + BTF_NON_DEFAULT_FEATURE(reproducible_build, reproducible_build, false), }; #define BTF_MAX_FEATURE_STR 1024 -bool set_btf_features_defaults; +bool set_btf_features_initial; static void init_btf_features(void) { int i; - /* Only set default values once, as multiple --btf_features= - * may be specified on command-line, and setting defaults + /* Only set initial values once, as multiple --btf_features= + * may be specified on command-line, and setting values * again could clobber values. The aim is to enable * all features set across all --btf_features options. */ - if (set_btf_features_defaults) + if (set_btf_features_initial) return; for (i = 0; i < ARRAY_SIZE(btf_features); i++) - *btf_features[i].conf_value = btf_features[i].default_value; - set_btf_features_defaults = true; + *btf_features[i].conf_value = btf_features[i].initial_value; + set_btf_features_initial = true; } static struct btf_feature *find_btf_feature(char *name) @@ -1322,10 +1325,10 @@ static struct btf_feature *find_btf_feature(char *name) static void enable_btf_feature(struct btf_feature *feature) { - /* switch "default-off" features on, and "default-on" features - * off; i.e. negate the default value. + /* switch "initial-off" features on, and "initial-on" features + * off; i.e. negate the initial value. */ - *feature->conf_value = !feature->default_value; + *feature->conf_value = !feature->initial_value; } static void show_supported_btf_features(FILE *output) @@ -1351,11 +1354,11 @@ static void parse_btf_features(const char *features, bool strict) init_btf_features(); - if (strcmp(features, "all") == 0) { + if (strcmp(features, "default") == 0) { int i; for (i = 0; i < ARRAY_SIZE(btf_features); i++) { - if (btf_features[i].enable_for_all) + if (btf_features[i].default_enabled) enable_btf_feature(&btf_features[i]); } return; @@ -1367,10 +1370,10 @@ static void parse_btf_features(const char *features, bool strict) struct btf_feature *feature = find_btf_feature(feature_name); if (!feature) { - /* --btf_features=all,nonstandard_feature should be + /* --btf_features=default,nonstandard_feature should be * allowed. */ - if (strcmp(feature_name, "all") == 0) { + if (strcmp(feature_name, "default") == 0) { parse_btf_features(feature_name, strict); } else if (strict) { fprintf(stderr, "Feature '%s' in '%s' is not supported. Supported BTF features are:\n", @@ -1819,7 +1822,7 @@ static const struct argp_option pahole__options[] = { .name = "btf_features", .key = ARGP_btf_features, .arg = "FEATURE_LIST", - .doc = "Specify supported BTF features in FEATURE_LIST or 'all' for all supported features. See the pahole manual page for the list of supported features." + .doc = "Specify supported BTF features in FEATURE_LIST or 'default' for default set of supported features. See the pahole manual page for the list of supported, default features." }, { .name = "supported_btf_features", @@ -1830,7 +1833,7 @@ static const struct argp_option pahole__options[] = { .name = "btf_features_strict", .key = ARGP_btf_features_strict, .arg = "FEATURE_LIST_STRICT", - .doc = "Specify supported BTF features in FEATURE_LIST_STRICT or 'all' for all supported features. Unlike --btf_features, unrecognized features will trigger an error." + .doc = "Specify supported BTF features in FEATURE_LIST_STRICT or 'default' for default set of supported features. Unlike --btf_features, unrecognized features will trigger an error." }, { .name = "reproducible_build", From patchwork Tue Apr 23 16:02:00 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alan Maguire X-Patchwork-Id: 13640303 Received: from mx0b-00069f02.pphosted.com (mx0b-00069f02.pphosted.com [205.220.177.32]) (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 3085813CA9C; Tue, 23 Apr 2024 16:02:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.177.32 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713888147; cv=none; b=EAYgP+uZSlzkpsk48yx53DitT+2fvaXDgJfZejSJ7/Vtj9g/lU16sVeBki2KMu+bCC8hhHgMe99U5TYe7OPLxeddpKWJnjRmGeTilaR4Ci6YIvePx+G0Q3E3rRfZXMvtroyQ+LJLfPk5o+P0dFwivR9xAV1aadys35UVz1g0iKI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; 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Tue, 23 Apr 2024 16:02:10 GMT Received: from pps.reinject (localhost [127.0.0.1]) by iadpaimrmta01.imrmtpd1.prodappiadaev1.oraclevcn.com (PPS) with ESMTPS id 3xpbf3e735-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 23 Apr 2024 16:02:10 +0000 Received: from iadpaimrmta01.imrmtpd1.prodappiadaev1.oraclevcn.com (iadpaimrmta01.imrmtpd1.prodappiadaev1.oraclevcn.com [127.0.0.1]) by pps.reinject (8.17.1.5/8.17.1.5) with ESMTP id 43NG24nX038435; Tue, 23 Apr 2024 16:02:10 GMT Received: from bpf.uk.oracle.com (dhcp-10-175-173-44.vpn.oracle.com [10.175.173.44]) by iadpaimrmta01.imrmtpd1.prodappiadaev1.oraclevcn.com (PPS) with ESMTP id 3xpbf3e6pt-3; Tue, 23 Apr 2024 16:02:09 +0000 From: Alan Maguire To: acme@kernel.org Cc: dxu@dxuuu.xyz, dwarves@vger.kernel.org, andrii.nakryiko@gmail.com, jolsa@kernel.org, williams@redhat.com, kcarcia@redhat.com, bpf@vger.kernel.org, eddyz87@gmail.com, Alan Maguire Subject: [PATCH dwarves 2/2] tests: update reproducible_build test to use "default" Date: Tue, 23 Apr 2024 17:02:00 +0100 Message-Id: <20240423160200.3139270-3-alan.maguire@oracle.com> X-Mailer: git-send-email 2.39.3 In-Reply-To: <20240423160200.3139270-1-alan.maguire@oracle.com> References: <20240423160200.3139270-1-alan.maguire@oracle.com> 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:18.0.1011,Hydra:6.0.650,FMLib:17.11.176.26 definitions=2024-04-23_12,2024-04-23_02,2023-05-22_02 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 malwarescore=0 mlxlogscore=999 mlxscore=0 phishscore=0 spamscore=0 adultscore=0 bulkscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2404010000 definitions=main-2404230037 X-Proofpoint-ORIG-GUID: KD2gtLrcn_ErmDW-jJFAgp7k1dQYc7pY X-Proofpoint-GUID: KD2gtLrcn_ErmDW-jJFAgp7k1dQYc7pY The test should use --btf_features=default in place of the removed "all". Signed-off-by: Alan Maguire --- tests/reproducible_build.sh | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/tests/reproducible_build.sh b/tests/reproducible_build.sh index e2f8360..00269c1 100755 --- a/tests/reproducible_build.sh +++ b/tests/reproducible_build.sh @@ -22,14 +22,14 @@ echo -n "Parallel reproducible DWARF Loading/Serial BTF encoding: " test -n "$VERBOSE" && printf "\nserial encoding...\n" -pahole --btf_features=all --btf_encode_detached=$outdir/vmlinux.btf.serial $vmlinux +pahole --btf_features=default --btf_encode_detached=$outdir/vmlinux.btf.serial $vmlinux bpftool btf dump file $outdir/vmlinux.btf.serial > $outdir/bpftool.output.vmlinux.btf.serial nr_proc=$(getconf _NPROCESSORS_ONLN) for threads in $(seq $nr_proc) ; do test -n "$VERBOSE" && echo $threads threads encoding - pahole -j$threads --btf_features=all,reproducible_build --btf_encode_detached=$outdir/vmlinux.btf.parallel.reproducible $vmlinux & + pahole -j$threads --btf_features=default,reproducible_build --btf_encode_detached=$outdir/vmlinux.btf.parallel.reproducible $vmlinux & pahole=$! # HACK: Wait a bit for pahole to start its threads sleep 0.3s