From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Cyrus-Session-Id: sloti22d1t05-3980569-1521499351-2-11998372557893315121 X-Sieve: CMU Sieve 3.0 X-Spam-known-sender: no X-Spam-score: 0.0 X-Spam-hits: BAYES_00 -1.9, HEADER_FROM_DIFFERENT_DOMAINS 0.25, RCVD_IN_DNSWL_HI -5, T_RP_MATCHES_RCVD -0.01, LANGUAGES enca, BAYES_USED global, SA_VERSION 3.4.0 X-Spam-source: IP='209.132.180.67', Host='vger.kernel.org', Country='CN', FromHeader='com', MailFrom='org', XOriginatingCountry='US' X-Spam-charsets: plain='iso-8859-1' X-Resolved-to: greg@kroah.com X-Delivered-to: greg@kroah.com X-Mail-from: stable-owner@vger.kernel.org ARC-Seal: i=1; a=rsa-sha256; cv=none; d=messagingengine.com; s=arctest; t=1521499350; b=OPbvBkv1DS3ScDXWg7muY+mWgOQBbtkYdIRTZ2Q2FNbZZuO WScaq43y2Rhmfg0k83Q3Vw5KigwKUhuc/JCgiEkYboggvvxBboGM0L6dUJM7qS9X 9FN1xOAbCPX27GlcWWaVfrPrBGDz+n2JDguBXb70939YWJ37G+qhnBI7+6jcCEqj 87tvyxmdR80yTE6s2iiEkGD0bvTkCVkIqpor5sers1fhGciG/aYWIEFu+te056hw FgwV2qgft/V79oF5PTN7AeLy0wxZYwCO31d0Av8tZPOTQHkvPF3ai4FUPaMhGCtf tq0AnKFUL+LIzDkZb9oRpk3PFww0aPoz6DjtAuA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=from:to:cc:subject:date:message-id :references:in-reply-to:content-type:content-transfer-encoding :mime-version:sender:list-id; s=arctest; t=1521499350; bh=eKeOD6 fvJ6fYMqBFUoL1Un5ptoOcyyUhHRDNz09A0JU=; b=wpcTQSM2up+F12w+p5LciY 89FjDY2P0rs5g9fxqi0LpA19CB5ezAZ2P0dkXHNZfKnpTVLViX1p3MNHDrkE03+4 AOPa20z2niC7lTBtUBatAD/QBXsXddz2e4PwDm1yrUV1l5OF4493bCDhxjx3Adec JHWZvx2bnzTeO6BFSJeq4ploU+4zphlJaM3lc0xzck1aPm+XFl9Z0gnpgoq9+yGi D8+KL6JxFZuxYNAj+2idsCICzn0/NK3tjsQMDSvKN1vDrT/6jYiyaqJfj2ZnpS/5 eHsCfgmfrpRrkKk1oVB9N8S+Kuw8iQIfJFfzpA4E6F87L9S2AxY2aEtOQ/CAUfIQ == ARC-Authentication-Results: i=1; mx6.messagingengine.com; arc=none (no signatures found); dkim=pass (1024-bit rsa key sha256) header.d=microsoft.com header.i=@microsoft.com header.b=BJRmnB5t x-bits=1024 x-keytype=rsa x-algorithm=sha256 x-selector=selector1; dmarc=pass (p=reject,has-list-id=yes,d=none) header.from=microsoft.com; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=stable-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=fail; x-category=clean score=-100 state=0 spamcause=gggruggvucftvghtrhhoucdtuddrgedtgedrudeggddtudculddtuddrgedtfedrtddtmdcutefuodetggdotefrodftvfcurfhrohhfihhlvgemucfhrghsthforghilhenuceurghilhhouhhtmecufedttdenucesvcftvggtihhpihgvnhhtshculddquddttddmnecujfgurhephffvufhtfffkfhgjihgtgfggshhpjeesthhqredttddtudenucfhrhhomhepufgrshhhrgcunfgvvhhinhcuoeetlhgvgigrnhguvghrrdfnvghvihhnsehmihgtrhhoshhofhhtrdgtohhmqeenucffohhmrghinhepkhgvrhhnvghlrdhorhhgpddvhedrshhonecukfhppedvtdelrddufedvrddukedtrdeijedphedvrdduieekrdehgedrvdehvddpfhgvkedtmeemfegulegsmeejlegvjeemleegvggsmeehugeivdenucfrrghrrghmpehinhgvthepvddtledrudefvddrudektddrieejpdhhvghlohepvhhgvghrrdhkvghrnhgvlhdrohhrghdpmhgrihhlfhhrohhmpeeoshhtrggslhgvqdhofihnvghrsehvghgvrhdrkhgvrhhnvghlrdhorhhgqecuuefqffgjpeekuefkvffokffogfcuuffkkgfgpeduuddujeelnecuvehluhhsthgvrhfuihiivgepfe; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=microsoft.com header.result=pass header_is_org_domain=yes Authentication-Results: mx6.messagingengine.com; arc=none (no signatures found); dkim=pass (1024-bit rsa key sha256) header.d=microsoft.com header.i=@microsoft.com header.b=BJRmnB5t x-bits=1024 x-keytype=rsa x-algorithm=sha256 x-selector=selector1; dmarc=pass (p=reject,has-list-id=yes,d=none) header.from=microsoft.com; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=stable-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=fail; x-category=clean score=-100 state=0 spamcause=gggruggvucftvghtrhhoucdtuddrgedtgedrudeggddtudculddtuddrgedtfedrtddtmdcutefuodetggdotefrodftvfcurfhrohhfihhlvgemucfhrghsthforghilhenuceurghilhhouhhtmecufedttdenucesvcftvggtihhpihgvnhhtshculddquddttddmnecujfgurhephffvufhtfffkfhgjihgtgfggshhpjeesthhqredttddtudenucfhrhhomhepufgrshhhrgcunfgvvhhinhcuoeetlhgvgigrnhguvghrrdfnvghvihhnsehmihgtrhhoshhofhhtrdgtohhmqeenucffohhmrghinhepkhgvrhhnvghlrdhorhhgpddvhedrshhonecukfhppedvtdelrddufedvrddukedtrdeijedphedvrdduieekrdehgedrvdehvddpfhgvkedtmeemfegulegsmeejlegvjeemleegvggsmeehugeivdenucfrrghrrghmpehinhgvthepvddtledrudefvddrudektddrieejpdhhvghlohepvhhgvghrrdhkvghrnhgvlhdrohhrghdpmhgrihhlfhhrohhmpeeoshhtrggslhgvqdhofihnvghrsehvghgvrhdrkhgvrhhnvghlrdhorhhgqecuuefqffgjpeekuefkvffokffogfcuuffkkgfgpeduuddujeelnecuvehluhhsthgvrhfuihiivgepfe; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=microsoft.com header.result=pass header_is_org_domain=yes Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S936828AbeCSWl5 (ORCPT ); Mon, 19 Mar 2018 18:41:57 -0400 Received: from mail-by2nam01on0103.outbound.protection.outlook.com ([104.47.34.103]:19764 "EHLO NAM01-BY2-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1755999AbeCSPrM (ORCPT ); Mon, 19 Mar 2018 11:47:12 -0400 From: Sasha Levin To: "linux-kernel@vger.kernel.org" , "stable@vger.kernel.org" CC: Masami Hiramatsu , Paul Clarke , bhargavb , "linux-rt-users@vger.kernel.org" , Arnaldo Carvalho de Melo , Sasha Levin Subject: [PATCH AUTOSEL for 4.15 009/124] perf probe: Find versioned symbols from map Thread-Topic: [PATCH AUTOSEL for 4.15 009/124] perf probe: Find versioned symbols from map Thread-Index: AQHTv5mIpFrtTTsamU2f/Wm7JWU1ZA== Date: Mon, 19 Mar 2018 15:47:06 +0000 Message-ID: <20180319154645.11350-9-alexander.levin@microsoft.com> References: <20180319154645.11350-1-alexander.levin@microsoft.com> In-Reply-To: <20180319154645.11350-1-alexander.levin@microsoft.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [52.168.54.252] x-ms-publictraffictype: Email x-microsoft-exchange-diagnostics: 1;DM5PR2101MB1013;7:qgjWgWSwl3arJimrScmxslwCoX7i287fKp8OxlehUVw6kKrpnWe6wrDcY3PNbD1k5Te+YSwJ/2H12mL1Z/hwPLWW/sYKrmNtE3KGiraNmyDG6e2UZ4yTaHFpoUVhdW/yXrq2MYKNboAXHvUtyZlJz4eRgFOfTfyhhS76yq1BfN687WM7mtJOe5/RvZJAM8CflPhxZvEKggUiGq0QqfRVHTA/TKcw/4K0HRrfdjqfGujXDgLr7Ysgk9CVsQTz+3eZ;20:jhchPW2Zil3pTol7+CVxOVQFIs1PYGp+m5MGJc3HLTP0/kfg0mbW2gVcBzAGKz1B8QS93Tg5KVlj+vuiuIsWwc1jMefUD8b3jdMAwSNcogI8cs/YfbvuARVpeKcTahhh3P9m+DND0G579HTY9jfr1t24ZQ59UPNJYIZSS6NgcnY= x-ms-exchange-antispam-srfa-diagnostics: SOS; x-ms-office365-filtering-ht: Tenant x-ms-office365-filtering-correlation-id: a57c8d5b-963f-4af9-4f49-08d58db0ab17 x-microsoft-antispam: UriScan:;BCL:0;PCL:0;RULEID:(7020095)(4652020)(48565401081)(5600026)(4604075)(3008032)(4534165)(4627221)(201703031133081)(201702281549075)(2017052603328)(7193020);SRVR:DM5PR2101MB1013; x-ms-traffictypediagnostic: DM5PR2101MB1013: authentication-results: spf=none (sender IP is ) smtp.mailfrom=Alexander.Levin@microsoft.com; x-microsoft-antispam-prvs: x-exchange-antispam-report-test: UriScan:(28532068793085)(89211679590171)(9452136761055)(85827821059158)(42068640409301)(274839183919467)(104084551191319); x-exchange-antispam-report-cfa-test: BCL:0;PCL:0;RULEID:(8211001083)(61425038)(6040522)(2401047)(8121501046)(5005006)(93006095)(93001095)(10201501046)(3231221)(944501300)(52105095)(3002001)(6055026)(61426038)(61427038)(6041310)(201703131423095)(201702281528075)(20161123555045)(201703061421075)(201703061406153)(20161123564045)(20161123562045)(20161123558120)(20161123560045)(6072148)(201708071742011);SRVR:DM5PR2101MB1013;BCL:0;PCL:0;RULEID:;SRVR:DM5PR2101MB1013; x-forefront-prvs: 06167FAD59 x-forefront-antispam-report: SFV:NSPM;SFS:(10019020)(366004)(396003)(39860400002)(346002)(376002)(39380400002)(189003)(199004)(86612001)(316002)(26005)(72206003)(4326008)(25786009)(110136005)(10290500003)(966005)(86362001)(59450400001)(54906003)(53936002)(36756003)(107886003)(3280700002)(39060400002)(14454004)(22452003)(8656006)(6506007)(5660300001)(68736007)(99286004)(186003)(478600001)(76176011)(2950100002)(10090500001)(102836004)(6116002)(5250100002)(2501003)(97736004)(3660700001)(106356001)(81156014)(81166006)(8676002)(8936002)(7736002)(305945005)(2900100001)(105586002)(3846002)(1076002)(66066001)(6436002)(2906002)(6306002)(6512007)(6486002)(22906009)(217873001);DIR:OUT;SFP:1102;SCL:1;SRVR:DM5PR2101MB1013;H:DM5PR2101MB1032.namprd21.prod.outlook.com;FPR:;SPF:None;LANG:en;PTR:InfoNoRecords;MX:1;A:1; x-microsoft-antispam-message-info: SN3VG+OkLBqGespwU+s3RelNHQCW5pXdCYGja6yz+CHwJO3WFHGxMuWtbLWwZ1BWMhFvZRS29Yeujz5bgDQ88a9d7GkSOCQ8v7hWwqzGLSJ2MsXHj1OAoIE7XZdpfSuzAofpTTBQKpPfU5YvX03BBvQ+kwlS2HA/bViYQlXmUdIP5MYUexMbI31XPRG5dzU30eB2ruQ2zTRehs4yggeLpBV11HpmEMDv1d1Ndhk1iblbCMNxsH0KmgJFdcL8YvmSvHy5TFLvKX6GttQE9UFp7NKIPJwsmWFHvL8fPGDN5QiZb/eNUFaZHnbUD/LodVI0yNkc2kAKZ59nFDWCiatfUw== spamdiagnosticoutput: 1:99 spamdiagnosticmetadata: NSPM Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: microsoft.com X-MS-Exchange-CrossTenant-Network-Message-Id: a57c8d5b-963f-4af9-4f49-08d58db0ab17 X-MS-Exchange-CrossTenant-originalarrivaltime: 19 Mar 2018 15:47:06.4713 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 72f988bf-86f1-41af-91ab-2d7cd011db47 X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM5PR2101MB1013 Sender: stable-owner@vger.kernel.org X-Mailing-List: stable@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: From: Masami Hiramatsu [ Upstream commit 4b3a2716dd785fabb9f6ac80c1d53cb29a88169d ] Commit d80406453ad4 ("perf symbols: Allow user probes on versioned symbols") allows user to find default versioned symbols (with "@@") in map. However, it did not enable normal versioned symbol (with "@") for perf-probe. E.g. =3D=3D=3D=3D=3D # ./perf probe -x /lib64/libc-2.25.so malloc_get_state Failed to find symbol malloc_get_state in /usr/lib64/libc-2.25.so Error: Failed to add events. =3D=3D=3D=3D=3D This solves above issue by improving perf-probe symbol search function, as below. =3D=3D=3D=3D=3D # ./perf probe -x /lib64/libc-2.25.so malloc_get_state Added new event: probe_libc:malloc_get_state (on malloc_get_state in /usr/lib64/libc-2.2= 5.so) You can now use it in all perf tools, such as: perf record -e probe_libc:malloc_get_state -aR sleep 1 # ./perf probe -l probe_libc:malloc_get_state (on malloc_get_state@GLIBC_2.2.5 in /usr/li= b64/libc-2.25.so) =3D=3D=3D=3D=3D Signed-off-by: Masami Hiramatsu Reviewed-by: Thomas Richter Acked-by: Ravi Bangoria Tested-by: Arnaldo Carvalho de Melo Cc: Paul Clarke Cc: bhargavb Cc: linux-rt-users@vger.kernel.org Link: http://lkml.kernel.org/r/151275049269.24652.1639103455496216255.stgit= @devbox Signed-off-by: Arnaldo Carvalho de Melo Signed-off-by: Sasha Levin --- tools/perf/arch/powerpc/util/sym-handling.c | 8 ++++++++ tools/perf/util/probe-event.c | 20 ++++++++++++++++++-- tools/perf/util/symbol.c | 5 +++++ tools/perf/util/symbol.h | 1 + 4 files changed, 32 insertions(+), 2 deletions(-) diff --git a/tools/perf/arch/powerpc/util/sym-handling.c b/tools/perf/arch/= powerpc/util/sym-handling.c index 9c4e23d8c8ce..53d83d7e6a09 100644 --- a/tools/perf/arch/powerpc/util/sym-handling.c +++ b/tools/perf/arch/powerpc/util/sym-handling.c @@ -64,6 +64,14 @@ int arch__compare_symbol_names_n(const char *namea, cons= t char *nameb, =20 return strncmp(namea, nameb, n); } + +const char *arch__normalize_symbol_name(const char *name) +{ + /* Skip over initial dot */ + if (name && *name =3D=3D '.') + name++; + return name; +} #endif =20 #if defined(_CALL_ELF) && _CALL_ELF =3D=3D 2 diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c index b7aaf9b2294d..c3cd3488fee7 100644 --- a/tools/perf/util/probe-event.c +++ b/tools/perf/util/probe-event.c @@ -2792,16 +2792,32 @@ static int find_probe_functions(struct map *map, ch= ar *name, int found =3D 0; struct symbol *sym; struct rb_node *tmp; + const char *norm, *ver; + char *buf =3D NULL; =20 if (map__load(map) < 0) return 0; =20 map__for_each_symbol(map, sym, tmp) { - if (strglobmatch(sym->name, name)) { + norm =3D arch__normalize_symbol_name(sym->name); + if (!norm) + continue; + + /* We don't care about default symbol or not */ + ver =3D strchr(norm, '@'); + if (ver) { + buf =3D strndup(norm, ver - norm); + if (!buf) + return -ENOMEM; + norm =3D buf; + } + if (strglobmatch(norm, name)) { found++; if (syms && found < probe_conf.max_probes) syms[found - 1] =3D sym; } + if (buf) + zfree(&buf); } =20 return found; @@ -2847,7 +2863,7 @@ static int find_probe_trace_events_from_map(struct pe= rf_probe_event *pev, * same name but different addresses, this lists all the symbols. */ num_matched_functions =3D find_probe_functions(map, pp->function, syms); - if (num_matched_functions =3D=3D 0) { + if (num_matched_functions <=3D 0) { pr_err("Failed to find symbol %s in %s\n", pp->function, pev->target ? : "kernel"); ret =3D -ENOENT; diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c index 1b67a8639dfe..cc065d4bfafc 100644 --- a/tools/perf/util/symbol.c +++ b/tools/perf/util/symbol.c @@ -94,6 +94,11 @@ static int prefix_underscores_count(const char *str) return tail - str; } =20 +const char * __weak arch__normalize_symbol_name(const char *name) +{ + return name; +} + int __weak arch__compare_symbol_names(const char *namea, const char *nameb= ) { return strcmp(namea, nameb); diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h index a4f0075b4e5c..0563f33c1eb3 100644 --- a/tools/perf/util/symbol.h +++ b/tools/perf/util/symbol.h @@ -349,6 +349,7 @@ bool elf__needs_adjust_symbols(GElf_Ehdr ehdr); void arch__sym_update(struct symbol *s, GElf_Sym *sym); #endif =20 +const char *arch__normalize_symbol_name(const char *name); #define SYMBOL_A 0 #define SYMBOL_B 1 =20 --=20 2.14.1