From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.9 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 90BA8C433DF for ; Thu, 2 Jul 2020 17:50:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6EA3020702 for ; Thu, 2 Jul 2020 17:50:01 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="sxLb1jGU" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727992AbgGBRt7 (ORCPT ); Thu, 2 Jul 2020 13:49:59 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50420 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727985AbgGBRt6 (ORCPT ); Thu, 2 Jul 2020 13:49:58 -0400 Received: from mail-wr1-x441.google.com (mail-wr1-x441.google.com [IPv6:2a00:1450:4864:20::441]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6FBA1C08C5C1 for ; Thu, 2 Jul 2020 10:49:58 -0700 (PDT) Received: by mail-wr1-x441.google.com with SMTP id f18so21454076wrs.0 for ; Thu, 02 Jul 2020 10:49:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=h7Ck6dWhaMy9XxuQAS45jH4/gGQNVyX8Ys6+xcSHVKI=; b=sxLb1jGUV2gJ/dspoPKiorJf2dNfhu9DOcc0nemHyGw3eQrMO+6Og+FGrtbSkVXQ84 QXZLHYsbYYC3HCEVz6/lUl/VJ/ArNRMPy94w2ZRz3iV7+RJ5ejZdcF9+s2U6dwv9dZ1g IyV2oCQ0S0PIQhHsIQwckvR8KTDsZ4O94vegkW+ZJteGtV+bdS4UR7JN2umRjdRIww1e bB2LgMRpQ2o0kEQpcCKUXTzXbw7jIOZzJNXwFiMnEnoFydwW4Pdry6JWAIXdfYb1uDfy Naq59v/ZGtM+r3RUd0CvmNBmzrBhvQ+PhRoG4/Iu7DWf+RkQCqScq8q8nRrvPF5LpX+X LROw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=h7Ck6dWhaMy9XxuQAS45jH4/gGQNVyX8Ys6+xcSHVKI=; b=WOU4bWXJHabKUS2yAPzU2wdadeiA8GG4hOgBEcNaG3FW9Rb0QvWBVLi/+OGEu5KTH3 I1yRcNa1Ty/AwICi/cs5tLKCMp6ZB37E9tFTMglcss9aOTmdJaa7Uv9pZq3daI6PhqXy inkVCafEOVTlxDRPITWqEIQ9C7PTOorV7ZIopCKXYLgSa/1qfudtaS+V5Cfa6UMvtFT+ 069dHzfkIhp8/H5xXlHQIJsIzM4IhMXCe7gUiJLfSPPJqEl7uMcy0paFgoBtEPabiy/M EQjWPPzStubdxiC4K/OacLgkKb9wqeMmABouc5ZyQdavn7tEL03yAH11Mp5ZqbNiDrIr EcPA== X-Gm-Message-State: AOAM531ffbpKtzI635hay8Ox/d3Uoc6TO63coLcLL2KjDCwfu2L3D+2p gkBqO1lPZSlnMYhR3sz1ZSB04+MF/fk= X-Google-Smtp-Source: ABdhPJxmkNxoMqHv5s/noQmQmiQl3SiXuYw/m3ULYYo1jj22QWybCM4fgy+uzsfiVcANQcRsiHG0vQ== X-Received: by 2002:adf:f445:: with SMTP id f5mr33294675wrp.339.1593712197240; Thu, 02 Jul 2020 10:49:57 -0700 (PDT) Received: from oberon.zico.biz ([83.222.187.186]) by smtp.gmail.com with ESMTPSA id g82sm9289319wma.37.2020.07.02.10.49.56 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 02 Jul 2020 10:49:56 -0700 (PDT) From: "Tzvetomir Stoyanov (VMware)" To: rostedt@goodmis.org Cc: linux-trace-devel@vger.kernel.org Subject: [PATCH 12/15] tools lib traceevent: Move kernel_stack event handler to "function" plugin. Date: Thu, 2 Jul 2020 20:49:47 +0300 Message-Id: <20200702174950.123454-4-tz.stoyanov@gmail.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200702174950.123454-1-tz.stoyanov@gmail.com> References: <20200702174950.123454-1-tz.stoyanov@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-trace-devel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-trace-devel@vger.kernel.org The "kernel_stack" event handler does not depend on any trace-cmd context, it can be used aside from the application. The code is moved to libtraceevent "function" plugin. Link: http://lore.kernel.org/linux-trace-devel/20190726124308.18735-2-tz.stoyanov@gmail.com Signed-off-by: Tzvetomir Stoyanov (VMware) Signed-off-by: Steven Rostedt (VMware) --- .../lib/traceevent/plugins/plugin_function.c | 41 +++++++++++++++++++ 1 file changed, 41 insertions(+) diff --git a/tools/lib/traceevent/plugins/plugin_function.c b/tools/lib/traceevent/plugins/plugin_function.c index cafddd6be983..c7d321968f39 100644 --- a/tools/lib/traceevent/plugins/plugin_function.c +++ b/tools/lib/traceevent/plugins/plugin_function.c @@ -184,11 +184,52 @@ static int function_handler(struct trace_seq *s, struct tep_record *record, return 0; } +static int +trace_stack_handler(struct trace_seq *s, struct tep_record *record, + struct tep_event *event, void *context) +{ + struct tep_format_field *field; + unsigned long long addr; + const char *func; + int long_size; + void *data = record->data; + + field = tep_find_any_field(event, "caller"); + if (!field) { + trace_seq_printf(s, "", "caller"); + return 0; + } + + trace_seq_puts(s, "\n"); + + long_size = tep_get_long_size(event->tep); + + for (data += field->offset; data < record->data + record->size; + data += long_size) { + addr = tep_read_number(event->tep, data, long_size); + + if ((long_size == 8 && addr == (unsigned long long)-1) || + ((int)addr == -1)) + break; + + func = tep_find_function(event->tep, addr); + if (func) + trace_seq_printf(s, "=> %s (%llx)\n", func, addr); + else + trace_seq_printf(s, "=> %llx\n", addr); + } + + return 0; +} + int TEP_PLUGIN_LOADER(struct tep_handle *tep) { tep_register_event_handler(tep, -1, "ftrace", "function", function_handler, NULL); + tep_register_event_handler(tep, -1, "ftrace", "kernel_stack", + trace_stack_handler, NULL); + tep_plugin_add_options("ftrace", plugin_options); return 0; -- 2.26.2