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=-15.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,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 B37BDC48BE6 for ; Thu, 10 Jun 2021 11:35:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 903D6613F1 for ; Thu, 10 Jun 2021 11:35:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230322AbhFJLhG (ORCPT ); Thu, 10 Jun 2021 07:37:06 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34854 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230323AbhFJLhD (ORCPT ); Thu, 10 Jun 2021 07:37:03 -0400 Received: from mail-wr1-x432.google.com (mail-wr1-x432.google.com [IPv6:2a00:1450:4864:20::432]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5C13EC0617A8 for ; Thu, 10 Jun 2021 04:35:01 -0700 (PDT) Received: by mail-wr1-x432.google.com with SMTP id i94so1917419wri.4 for ; Thu, 10 Jun 2021 04:35:01 -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=GOtu+Wh1wifdgaEDNzuuGtxIZ37pnZ0Ef/YmVURzFrM=; b=CO368FZMkGAYMtt4ZKFGjxwxHHzjGuppVPcZlRJgXNXS1Ucq8SkRi5bG9R+cywZadO XdcFkg4xtuG926lSqJNBR+HJaH2QJerwH4eY0tNjSSrkYAYYnZ9rPuncQaaHluAfWZVb sYIgwmWbkdgBur/I8Vpskk/GwcpHCC0qSCKzDF2LyBUbblvMT2PxKKjEEdcyY044VmbU Dv6FU72hO+LOkgqtVGW411TdAIBk9qGkzwLUACxBMGArh5nzpHWqgTaN/rOetIxQy2qn t/15gERTHLssjM00O8MNzMIBd8Qu6tuW02ijfXdLQnZGheQEWhqvdMeVQaZ5G4suF/sl FK7A== 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=GOtu+Wh1wifdgaEDNzuuGtxIZ37pnZ0Ef/YmVURzFrM=; b=tYIiDv2rNauIpcMpbil79LFez61koDdLMsX8RpXIFMjv8vulXcAtTNo6PD8JiTC1xR CPLvY5mLaT8g0OUUZiA8XmDyoyUDYJvoHNG4Nem9YrSNT3EczuBJn8fJzulXqVI/BjP5 EQYOh5H7Gz7fOiz5Soy5UEsC0D01D2gVOLdnWFYPTtsW+oU672MyTrezQfb50f/feFED 9Y3Gs22UHMKjkqxp8DWX2VH00LNZxjwlOVg5Wm4XNi+fbCTK3KULuFOwDFfTcmSfgSkc MoPcKWD+eiO/WXn/64GbU3xBWUbZrUMvA8+Pvc+/BZakvx3ruWmgb6vo9dme6iEn93VO bPQA== X-Gm-Message-State: AOAM530qUj7l7eU/AQUGA9FMZgEmJgEJeaqtRXyxJP0VO3VsAdxuk6En 8RjhABK66J5yyogyyi508JCUfLSBXdH/pg== X-Google-Smtp-Source: ABdhPJxuPiIHMYAFnfD6Csax1zyNUGjB5CEs+fL47nSxkvSAFwDnCXB8Wk+lZwDsdlXD2DjFI506Qg== X-Received: by 2002:a5d:5151:: with SMTP id u17mr5050940wrt.302.1623324899914; Thu, 10 Jun 2021 04:34:59 -0700 (PDT) Received: from oberon.zico.biz ([83.222.187.186]) by smtp.gmail.com with ESMTPSA id n42sm8898391wms.29.2021.06.10.04.34.59 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 10 Jun 2021 04:34:59 -0700 (PDT) From: "Tzvetomir Stoyanov (VMware)" To: rostedt@goodmis.org Cc: linux-trace-devel@vger.kernel.org Subject: [PATCH v5 34/40] trace-cmd: Copy buffers description in tracecmd_copy Date: Thu, 10 Jun 2021 14:34:20 +0300 Message-Id: <20210610113426.257931-35-tz.stoyanov@gmail.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210610113426.257931-1-tz.stoyanov@gmail.com> References: <20210610113426.257931-1-tz.stoyanov@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-trace-devel@vger.kernel.org Extend the tracecmd_copy() API to support copying of trace buffers description from input to output trace handler. Signed-off-by: Tzvetomir Stoyanov (VMware) --- .../include/private/trace-cmd-private.h | 2 + lib/trace-cmd/trace-input.c | 38 +++++++++++++++++++ lib/trace-cmd/trace-output.c | 3 ++ 3 files changed, 43 insertions(+) diff --git a/lib/trace-cmd/include/private/trace-cmd-private.h b/lib/trace-cmd/include/private/trace-cmd-private.h index 2c31be5f..3735586d 100644 --- a/lib/trace-cmd/include/private/trace-cmd-private.h +++ b/lib/trace-cmd/include/private/trace-cmd-private.h @@ -174,6 +174,8 @@ int tracecmd_copy_headers(struct tracecmd_input *in_handle, struct tracecmd_output *out_handle, enum tracecmd_file_states start_state, enum tracecmd_file_states end_state); +int tracecmd_copy_buffer_descr(struct tracecmd_input *in_handle, + struct tracecmd_output *out_handle); void tracecmd_set_flag(struct tracecmd_input *handle, int flag); void tracecmd_clear_flag(struct tracecmd_input *handle, int flag); unsigned long tracecmd_get_flags(struct tracecmd_input *handle); diff --git a/lib/trace-cmd/trace-input.c b/lib/trace-cmd/trace-input.c index 289102bf..7d0a41c2 100644 --- a/lib/trace-cmd/trace-input.c +++ b/lib/trace-cmd/trace-input.c @@ -4173,6 +4173,44 @@ int tracecmd_copy_headers(struct tracecmd_input *in_handle, return ret < 0 ? -1 : 0; } +static int skip_buffers(struct tracecmd_input *handle) +{ + unsigned long long offset; + unsigned int count; + char *bname; + int i; + + if (read4(handle, &count) < 0) + return -1; + + for (i = 0; i < count; i++) { + if (read8(handle, &offset) < 0) + return -1; + bname = read_string(handle); + free(bname); + } + + handle->file_state = TRACECMD_FILE_BUFERS; + return 0; +} + +int tracecmd_copy_buffer_descr(struct tracecmd_input *in_handle, + struct tracecmd_output *out_handle) +{ + int i; + + if (in_handle->file_version >= 7) { + if (!check_in_state(in_handle, TRACECMD_FILE_BUFERS)) + return -1; + skip_buffers(in_handle); + } + for (i = 0; i < in_handle->nr_buffers; i++) + tracecmd_add_buffer_description(out_handle, + in_handle->buffers[i].name, 0); + + return tracecmd_write_buffers_description(out_handle); +} + /** * tracecmd_record_at_buffer_start - return true if record is first on subbuffer * @handle: input handle for the trace.dat file diff --git a/lib/trace-cmd/trace-output.c b/lib/trace-cmd/trace-output.c index a3d0f037..960d9a44 100644 --- a/lib/trace-cmd/trace-output.c +++ b/lib/trace-cmd/trace-output.c @@ -1952,6 +1952,9 @@ struct tracecmd_output *tracecmd_copy(struct tracecmd_input *ihandle, const char fstate = state > TRACECMD_FILE_CPU_COUNT ? TRACECMD_FILE_CPU_COUNT : state; if (tracecmd_copy_headers(ihandle, handle, 0, fstate) < 0) goto out_free; + if (state >= TRACECMD_FILE_BUFERS && + tracecmd_copy_buffer_descr(ihandle, handle) < 0) + goto out_free; /* The file is all ready to have cpu data attached */ return handle; -- 2.31.1