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 39516C47094 for ; Thu, 10 Jun 2021 11:36:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2479B61406 for ; Thu, 10 Jun 2021 11:36:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230238AbhFJLiB (ORCPT ); Thu, 10 Jun 2021 07:38:01 -0400 Received: from mail-wm1-f45.google.com ([209.85.128.45]:54864 "EHLO mail-wm1-f45.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230272AbhFJLiB (ORCPT ); Thu, 10 Jun 2021 07:38:01 -0400 Received: by mail-wm1-f45.google.com with SMTP id m3so742716wms.4 for ; Thu, 10 Jun 2021 04:35:52 -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=05lK6z1tRPoWI6LsDB6q2WoJqm7gnqhaRWTmXEeBIrg=; b=NDtVgA+s+EOTt+QwBvTH6dupeY2FOV4ddHnWPJXdh9o6PlKjP5uzdAVGNyxyt/hyxO BoaybKt2je6/2zF7HkqIzAamuY+1Ka/KDLKTHy6mQcLcGhuZ6DAubBVn/QAi+jJcFMAC v+Kt80UWLwynx9bWPgnmQRDDNKqsjc3ocsmhU0pAAvtdoL+lHxXzsq+6MOQZnUm99FzC hUV77ikAjEapfhjagSnt7FiGJKJ3xm0gLw9x/sy+QGVV6LXy3CJzM4mtiZaoktowjrdT N2auaBXGt247t0jJQElAHx4Q4Ukg2qgNjSgTl0w7+wuF4X68xC+MSKrobS2uiY2EDYdR JLsA== 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=05lK6z1tRPoWI6LsDB6q2WoJqm7gnqhaRWTmXEeBIrg=; b=J738UoCX1cDnxdODyOHgeM+q5CrzkKUrr+mRgqfkVH0lAFsK6TlTplNJBpJ6Q8zrJK Ii+sPhxPtHrMg0qE0SWFvpOwj0h7dOFcG0CkIkZJSZ4ekhr51dbUwBJvve9Gq5dRQAbT VTHwAWp4rpJ8LniMviqLn8wJyqIs1hkzsnFItFhSIA6hRkDFZyw4jcEb8BysyCk96pzT 2sC36lvT+/owCLLl/LtzST0Pjfv8fFdwmPCxovXC/7nMw3tcwi1wYFnjgu7arKWyN1H+ qX+RmJoXM1Mqkg59D7YhqQh2XGrZOKUAr22Gho5xtQbOV3rh4xgPqpc552xAn/7Az4gr PgvQ== X-Gm-Message-State: AOAM5329voj43v4IokzT1Z2hJzvZXqlKuKoFB7IdSNx30CikEYJt4n/+ wz+hVo+G7VtkD9ubJaUUSrhd2DU0SLvkVw== X-Google-Smtp-Source: ABdhPJyz5YTymm6widXM0pZ8gD7O1PjV92qJDA6gT/nDHgIEUNWbmonu+dmECpWZajTMQ+6YTTu+Ug== X-Received: by 2002:a05:600c:4b88:: with SMTP id e8mr4485261wmp.107.1623324891754; Thu, 10 Jun 2021 04:34:51 -0700 (PDT) Received: from oberon.zico.biz ([83.222.187.186]) by smtp.gmail.com with ESMTPSA id n42sm8898391wms.29.2021.06.10.04.34.50 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 10 Jun 2021 04:34:51 -0700 (PDT) From: "Tzvetomir Stoyanov (VMware)" To: rostedt@goodmis.org Cc: linux-trace-devel@vger.kernel.org Subject: [PATCH v5 25/40] trace-cmd: Read compressed trace data Date: Thu, 10 Jun 2021 14:34:11 +0300 Message-Id: <20210610113426.257931-26-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 When reading a trace.dat file of version 7, uncompress the trace data. The trace data for each CPU is uncompressed in a temporary file, located in /tmp directory with prefix "trace_cpu_data". Signed-off-by: Tzvetomir Stoyanov (VMware) --- lib/trace-cmd/trace-input.c | 74 +++++++++++++++++++++++++++++-------- tracecmd/trace-read.c | 8 ++++ 2 files changed, 67 insertions(+), 15 deletions(-) diff --git a/lib/trace-cmd/trace-input.c b/lib/trace-cmd/trace-input.c index 8fff003e..327082a2 100644 --- a/lib/trace-cmd/trace-input.c +++ b/lib/trace-cmd/trace-input.c @@ -54,6 +54,7 @@ struct page { #endif }; +#define COMPR_TEMP_FILE "/tmp/trace_cpu_dataXXXXXX" struct cpu_data { /* the first two never change */ unsigned long long file_offset; @@ -72,6 +73,10 @@ struct cpu_data { int page_cnt; int cpu; int pipe_fd; + + /* temporary file for uncompressed cpu data */ + int cfd; + char cfile[26]; /* strlen(COMPR_TEMP_FILE) */ }; struct input_buffer_instance { @@ -1080,6 +1085,7 @@ static void *allocate_page_map(struct tracecmd_input *handle, off64_t map_offset; void *map; int ret; + int fd; if (handle->read_page) { map = malloc(handle->page_size); @@ -1119,12 +1125,15 @@ static void *allocate_page_map(struct tracecmd_input *handle, map_size -= map_offset + map_size - (cpu_data->file_offset + cpu_data->file_size); + if (cpu_data->cfd >= 0) + fd = cpu_data->cfd; + else + fd = handle->fd; again: page_map->size = map_size; page_map->offset = map_offset; - page_map->map = mmap(NULL, map_size, PROT_READ, MAP_PRIVATE, - handle->fd, map_offset); + page_map->map = mmap(NULL, map_size, PROT_READ, MAP_PRIVATE, fd, map_offset); if (page_map->map == MAP_FAILED) { /* Try a smaller map */ @@ -2316,13 +2325,41 @@ tracecmd_read_prev(struct tracecmd_input *handle, struct tep_record *record) /* Not reached */ } +static int cpu_data_uncompress(struct tracecmd_input *handle, int cpu, unsigned long long *size) +{ + struct cpu_data *cpu_data; + + cpu_data = &handle->cpu_data[cpu]; + strcpy(cpu_data->cfile, COMPR_TEMP_FILE); + cpu_data->cfd = mkstemp(cpu_data->cfile); + if (cpu_data->cfd < 0) + return -1; + return tracecmd_uncompress_copy_to(handle->compress, cpu_data->cfd, NULL, size); +} + static int init_cpu(struct tracecmd_input *handle, int cpu) { struct cpu_data *cpu_data = &handle->cpu_data[cpu]; + unsigned long long size; + off64_t offset; int i; - cpu_data->offset = cpu_data->file_offset; - cpu_data->size = cpu_data->file_size; + if (handle->file_version >= 7 && cpu_data->file_size > 0) { + offset = lseek64(handle->fd, 0, SEEK_CUR); + if (lseek64(handle->fd, cpu_data->file_offset, SEEK_SET) == (off_t)-1) + return -1; + if (cpu_data_uncompress(handle, cpu, &size) < 0) + return -1; + cpu_data->offset = 0; + cpu_data->file_offset = 0; + cpu_data->file_size = size; + cpu_data->size = size; + if (lseek64(handle->fd, offset, SEEK_SET) == (off_t)-1) + return -1; + } else { + cpu_data->offset = cpu_data->file_offset; + cpu_data->size = cpu_data->file_size; + } cpu_data->timestamp = 0; list_head_init(&cpu_data->page_maps); @@ -3015,6 +3052,7 @@ static int read_cpu_data(struct tracecmd_input *handle) handle->cpu_data[cpu].file_offset = offset; handle->cpu_data[cpu].file_size = size; + handle->cpu_data[cpu].cfd = -1; if (size > max_size) max_size = size; @@ -3635,17 +3673,23 @@ void tracecmd_close(struct tracecmd_input *handle) /* The tracecmd_peek_data may have cached a record */ free_next(handle, cpu); free_page(handle, cpu); - if (handle->cpu_data && handle->cpu_data[cpu].kbuf) { - kbuffer_free(handle->cpu_data[cpu].kbuf); - if (handle->cpu_data[cpu].page_map) - free_page_map(handle->cpu_data[cpu].page_map); - - if (handle->cpu_data[cpu].page_cnt) - tracecmd_warning("%d pages still allocated on cpu %d%s", - handle->cpu_data[cpu].page_cnt, cpu, - show_records(handle->cpu_data[cpu].pages, - handle->cpu_data[cpu].nr_pages)); - free(handle->cpu_data[cpu].pages); + if (handle->cpu_data) { + if (handle->cpu_data[cpu].kbuf) { + kbuffer_free(handle->cpu_data[cpu].kbuf); + if (handle->cpu_data[cpu].page_map) + free_page_map(handle->cpu_data[cpu].page_map); + + if (handle->cpu_data[cpu].page_cnt) + tracecmd_warning("%d pages still allocated on cpu %d%s", + handle->cpu_data[cpu].page_cnt, cpu, + show_records(handle->cpu_data[cpu].pages, + handle->cpu_data[cpu].nr_pages)); + free(handle->cpu_data[cpu].pages); + } + if (handle->cpu_data[cpu].cfd >= 0) { + close(handle->cpu_data[cpu].cfd); + unlink(handle->cpu_data[cpu].cfile); + } } } diff --git a/tracecmd/trace-read.c b/tracecmd/trace-read.c index 0cf6e773..d605d05a 100644 --- a/tracecmd/trace-read.c +++ b/tracecmd/trace-read.c @@ -1363,7 +1363,14 @@ struct tracecmd_input *read_trace_header(const char *file, int flags) static void sig_end(int sig) { + struct handle_list *handles; + fprintf(stderr, "trace-cmd: Received SIGINT\n"); + + list_for_each_entry(handles, &handle_list, list) { + tracecmd_close(handles->handle); + } + exit(0); } @@ -1924,6 +1931,7 @@ void trace_report (int argc, char **argv) /* and version overrides uname! */ if (show_version) otype = OUTPUT_VERSION_ONLY; + read_data_info(&handle_list, otype, global, align_ts); list_for_each_entry(handles, &handle_list, list) { -- 2.31.1