From patchwork Thu Nov 11 15:11:40 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Tzvetomir Stoyanov (VMware)" X-Patchwork-Id: 12615095 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E382FC433EF for ; Thu, 11 Nov 2021 15:12:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CCFB661108 for ; Thu, 11 Nov 2021 15:12:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233987AbhKKPOz (ORCPT ); Thu, 11 Nov 2021 10:14:55 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38062 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233959AbhKKPOy (ORCPT ); Thu, 11 Nov 2021 10:14:54 -0500 Received: from mail-ed1-x52e.google.com (mail-ed1-x52e.google.com [IPv6:2a00:1450:4864:20::52e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9F2A9C061766 for ; Thu, 11 Nov 2021 07:12:05 -0800 (PST) Received: by mail-ed1-x52e.google.com with SMTP id j21so25220307edt.11 for ; Thu, 11 Nov 2021 07:12:05 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=HNGUzsiWRk6b9TAhXtVjrJoc/Vivu+0BGwmGzGqVQJc=; b=GWEtYO9nf6itlmvV0Z10dO26NGBaaDS4krt31h1gUaE2mOxvpuNjPaol/r3hmjxm+0 +RgrLHjryYVofw6VV5VKmFhYCQJUzw/aPcFfWbMD0vtAKTius8tj3N4RZy1iX63Mxcju CsCojtlUDve6bX3xNfX8GA9wC3Rz5csPcLjNp8kcYDGi/UzpycE456ce0OmfQ3qTY8O1 IgyP1SHqw/ku8BeSbdwWxPHAEEtBkYJzG04YNCd6C0dus3322+VayDBkVLbF9AxRQzdS WU5i/Oiw76AAZrwIA60YynMOgPR7HUpPofn6ioGcdPvkV+pHeD+HeOGeqEDZMQQgi7Q5 9Ikw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=HNGUzsiWRk6b9TAhXtVjrJoc/Vivu+0BGwmGzGqVQJc=; b=Eh2+EHlMrMYBxaht3QNQOKUT4HYBCRKTH/Qc+OOvwyVny1sBRLNKY5Z66r2KKhbpPs BTIa6TJCajNwZ3kx5QWvh/mHMO5I8hq4yI8xRvjBVmr7EYjKmiGx/4EVVkszL1umi6/T 6kYwmacqKByjaV/UISbz1yIlKqKIAfwYDwYciqUL8DiTfapDlyLrBKPjv2D7gZVjmtYf A84PZrzRLMsCk9qnwZYSt5IPl/7UBaDiTWrvF1cewOfQUzGz+7DU2bgoIM4T5fPfkTMR OiBqfVpYk8d4TwJFSdQ3dqCn7Lm2EAmVyr8Bv7DPS455NpO5DTiESQ/vPXnI+V6dwBIG C+XA== X-Gm-Message-State: AOAM532ywBuzTENnkBmsx2TrvXXLpCdqr/Fv20Ac7G4IrKw1B4M3bfW8 ZI/ihFzQj7fQjvnuoYTGuOXCqHOlSpfchQ== X-Google-Smtp-Source: ABdhPJxKm2Gc5tR9xDZ4s7meuwzGFwmfRphsNOKTrT+YYealza0gvPe8l4pJ3ERLuFPBETKA84YlYg== X-Received: by 2002:a05:6402:26ce:: with SMTP id x14mr10765468edd.326.1636643524180; Thu, 11 Nov 2021 07:12:04 -0800 (PST) Received: from oberon.zico.biz.zico.biz ([83.222.187.186]) by smtp.gmail.com with ESMTPSA id qf9sm1479509ejc.18.2021.11.11.07.12.03 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 11 Nov 2021 07:12:03 -0800 (PST) From: "Tzvetomir Stoyanov (VMware)" To: rostedt@goodmis.org Cc: linux-trace-devel@vger.kernel.org Subject: [PATCH v4 07/20] trace-cmd library: Compress part of the trace file Date: Thu, 11 Nov 2021 17:11:40 +0200 Message-Id: <20211111151153.86855-8-tz.stoyanov@gmail.com> X-Mailer: git-send-email 2.33.1 In-Reply-To: <20211111151153.86855-1-tz.stoyanov@gmail.com> References: <20211111151153.86855-1-tz.stoyanov@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-trace-devel@vger.kernel.org Compress part of the trace.dat file metadata. If there is compression support, compress these parts of the file: - ftrace events format - format of recorded events - information of the mapping of function addresses to the function names - trace_printk() format strings - information of the mapping a PID to a process name Signed-off-by: Tzvetomir Stoyanov (VMware) --- lib/trace-cmd/trace-output.c | 81 +++++++++++++++++++++++++++++------- 1 file changed, 67 insertions(+), 14 deletions(-) diff --git a/lib/trace-cmd/trace-output.c b/lib/trace-cmd/trace-output.c index cbe53199..8319d1de 100644 --- a/lib/trace-cmd/trace-output.c +++ b/lib/trace-cmd/trace-output.c @@ -394,6 +394,8 @@ out_write_section_header(struct tracecmd_output *handle, unsigned short header_i return -1; if (!HAS_SECTIONS(handle)) return 0; + if (!handle->compress) + flags &= ~TRACECMD_SEC_FL_COMPRESS; offset = do_lseek(handle, 0, SEEK_CUR); if (option) { endian8 = convert_endian_8(handle, offset); @@ -449,7 +451,7 @@ __hidden int out_update_section_header(struct tracecmd_output *handle, unsigned return 0; } -static int read_header_files(struct tracecmd_output *handle) +static int read_header_files(struct tracecmd_output *handle, bool compress) { enum tracecmd_section_flags flags = 0; tsize_t size, check_size, endian8; @@ -469,11 +471,14 @@ static int read_header_files(struct tracecmd_output *handle) if (!path) return -1; + if (compress) + flags |= TRACECMD_SEC_FL_COMPRESS; offset = out_write_section_header(handle, TRACECMD_OPTION_HEADER_INFO, "headers", flags, true); if (offset == (off64_t)-1) return -1; + out_compression_start(handle, compress); ret = stat(path, &st); if (ret < 0) { /* old style did not show this info, just add zero */ @@ -487,6 +492,8 @@ static int read_header_files(struct tracecmd_output *handle) goto out_close; if (do_write_check(handle, &size, 8)) goto out_close; + if (out_compression_end(handle, compress)) + goto out_close; if (out_update_section_header(handle, offset)) goto out_close; return 0; @@ -539,6 +546,8 @@ static int read_header_files(struct tracecmd_output *handle) goto out_close; } put_tracing_file(path); + if (out_compression_end(handle, compress)) + goto out_close; if (out_update_section_header(handle, offset)) goto out_close; handle->file_state = TRACECMD_FILE_HEADERS; @@ -546,6 +555,7 @@ static int read_header_files(struct tracecmd_output *handle) return 0; out_close: + out_compression_reset(handle, compress); if (fd >= 0) close(fd); return -1; @@ -774,7 +784,7 @@ create_event_list_item(struct tracecmd_output *handle, tracecmd_warning("Insufficient memory"); } -static int read_ftrace_files(struct tracecmd_output *handle) +static int read_ftrace_files(struct tracecmd_output *handle, bool compress) { enum tracecmd_section_flags flags = 0; struct list_event_system *systems = NULL; @@ -788,15 +798,20 @@ static int read_ftrace_files(struct tracecmd_output *handle) return -1; } + if (compress) + flags |= TRACECMD_SEC_FL_COMPRESS; offset = out_write_section_header(handle, TRACECMD_OPTION_FTRACE_EVENTS, "ftrace events", flags, true); if (offset == (off64_t)-1) return -1; create_event_list_item(handle, &systems, &list); - + out_compression_start(handle, compress); ret = copy_event_system(handle, systems); - + if (!ret) + ret = out_compression_end(handle, compress); + else + out_compression_reset(handle, compress); free_list_events(systems); if (ret) return ret; @@ -822,7 +837,7 @@ create_event_list(struct tracecmd_output *handle, } static int read_event_files(struct tracecmd_output *handle, - struct tracecmd_event_list *event_list) + struct tracecmd_event_list *event_list, bool compress) { enum tracecmd_section_flags flags = 0; struct list_event_system *systems; @@ -840,6 +855,8 @@ static int read_event_files(struct tracecmd_output *handle, return -1; } + if (compress) + flags |= TRACECMD_SEC_FL_COMPRESS; offset = out_write_section_header(handle, TRACECMD_OPTION_EVENT_FORMATS, "events format", flags, true); if (offset == (off64_t)-1) @@ -860,7 +877,7 @@ static int read_event_files(struct tracecmd_output *handle, for (slist = systems; slist; slist = slist->next) count++; - + out_compression_start(handle, compress); ret = -1; endian4 = convert_endian_4(handle, count); if (do_write_check(handle, &endian4, 4)) @@ -875,6 +892,9 @@ static int read_event_files(struct tracecmd_output *handle, } ret = copy_event_system(handle, slist); } + if (ret) + goto out_free; + ret = out_compression_end(handle, compress); if (ret) goto out_free; ret = out_update_section_header(handle, offset); @@ -882,6 +902,8 @@ static int read_event_files(struct tracecmd_output *handle, out_free: if (!ret) handle->file_state = TRACECMD_FILE_ALL_EVENTS; + else + out_compression_reset(handle, compress); free_list_events(systems); @@ -928,7 +950,7 @@ err: tracecmd_warning("can't set kptr_restrict"); } -static int read_proc_kallsyms(struct tracecmd_output *handle) +static int read_proc_kallsyms(struct tracecmd_output *handle, bool compress) { enum tracecmd_section_flags flags = 0; unsigned int size, check_size, endian4; @@ -946,11 +968,14 @@ static int read_proc_kallsyms(struct tracecmd_output *handle) if (handle->kallsyms) path = handle->kallsyms; + if (compress) + flags |= TRACECMD_SEC_FL_COMPRESS; offset = out_write_section_header(handle, TRACECMD_OPTION_KALLSYMS, "kallsyms", flags, true); if (offset == (off64_t)-1) return -1; + out_compression_start(handle, compress); ret = stat(path, &st); if (ret < 0) { /* not found */ @@ -976,14 +1001,19 @@ static int read_proc_kallsyms(struct tracecmd_output *handle) } set_proc_kptr_restrict(1); + ret = out_compression_end(handle, compress); + if (ret) + goto out; ret = out_update_section_header(handle, offset); out: if (!ret) handle->file_state = TRACECMD_FILE_KALLSYMS; + else + out_compression_reset(handle, compress); return ret; } -static int read_ftrace_printk(struct tracecmd_output *handle) +static int read_ftrace_printk(struct tracecmd_output *handle, bool compress) { enum tracecmd_section_flags flags = 0; unsigned int size, check_size, endian4; @@ -1002,10 +1032,13 @@ static int read_ftrace_printk(struct tracecmd_output *handle) if (!path) return -1; + if (compress) + flags |= TRACECMD_SEC_FL_COMPRESS; offset = out_write_section_header(handle, TRACECMD_OPTION_PRINTK, "printk", flags, true); if (offset == (off64_t)-1) return -1; + out_compression_start(handle, compress); ret = stat(path, &st); if (ret < 0) { /* not found */ @@ -1028,12 +1061,15 @@ static int read_ftrace_printk(struct tracecmd_output *handle) out: put_tracing_file(path); + if (out_compression_end(handle, compress)) + return -1; if (out_update_section_header(handle, offset)) return -1; handle->file_state = TRACECMD_FILE_PRINTK; return 0; fail: put_tracing_file(path); + out_compression_reset(handle, compress); return -1; } @@ -1407,21 +1443,25 @@ int tracecmd_output_write_init(struct tracecmd_output *handler) int tracecmd_output_write_headers(struct tracecmd_output *handler, struct tracecmd_event_list *list) { + bool compress = false; + if (!handler || handler->file_state < TRACECMD_FILE_ALLOCATED) return -1; /* Write init data, if not written yet */ if (handler->file_state < TRACECMD_FILE_INIT && tracecmd_output_write_init(handler)) return -1; - if (read_header_files(handler)) + if (handler->compress) + compress = true; + if (read_header_files(handler, compress)) return -1; - if (read_ftrace_files(handler)) + if (read_ftrace_files(handler, compress)) return -1; - if (read_event_files(handler, list)) + if (read_event_files(handler, list, compress)) return -1; - if (read_proc_kallsyms(handler)) + if (read_proc_kallsyms(handler, compress)) return -1; - if (read_ftrace_printk(handler)) + if (read_ftrace_printk(handler, compress)) return -1; return 0; } @@ -1792,6 +1832,7 @@ static tsize_t get_buffer_file_offset(struct tracecmd_output *handle, const char int tracecmd_write_cmdlines(struct tracecmd_output *handle) { enum tracecmd_section_flags flags = 0; + bool compress = false; tsize_t offset; int ret; @@ -1801,14 +1842,26 @@ int tracecmd_write_cmdlines(struct tracecmd_output *handle) return -1; } + if (handle->compress) + compress = true; + + if (compress) + flags |= TRACECMD_SEC_FL_COMPRESS; offset = out_write_section_header(handle, TRACECMD_OPTION_CMDLINES, "command lines", flags, true); if (offset == (off64_t)-1) return -1; + out_compression_start(handle, compress); + ret = save_tracing_file_data(handle, "saved_cmdlines"); - if (ret < 0) + if (ret < 0) { + out_compression_reset(handle, compress); return ret; + } + + if (out_compression_end(handle, compress)) + return -1; if (out_update_section_header(handle, offset)) return -1;