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From: "Tzvetomir Stoyanov (VMware)" <tz.stoyanov@gmail.com>
To: rostedt@goodmis.org
Cc: linux-trace-devel@vger.kernel.org
Subject: [PATCH v6 07/23] trace-cmd library: Do not write CPU count section in trace files version 7
Date: Thu,  2 Dec 2021 14:21:36 +0200	[thread overview]
Message-ID: <20211202122152.43275-8-tz.stoyanov@gmail.com> (raw)
In-Reply-To: <20211202122152.43275-1-tz.stoyanov@gmail.com>

Writing CPU count as a separate section in the trace file is redundant,
as there is already an option for that. Use that option in trace files
version 7.

Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com>
---
 lib/trace-cmd/trace-output.c | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

diff --git a/lib/trace-cmd/trace-output.c b/lib/trace-cmd/trace-output.c
index 40d5fe9c..caa3e2f5 100644
--- a/lib/trace-cmd/trace-output.c
+++ b/lib/trace-cmd/trace-output.c
@@ -1408,10 +1408,16 @@ int tracecmd_write_cpus(struct tracecmd_output *handle, int cpus)
 				 handle->file_state);
 		return -1;
 	}
-	cpus = convert_endian_4(handle, cpus);
-	ret = do_write_check(handle, &cpus, 4);
-	if (ret < 0)
-		return ret;
+
+	if (!HAS_SECTIONS(handle)) {
+		cpus = convert_endian_4(handle, cpus);
+		ret = do_write_check(handle, &cpus, 4);
+		if (ret < 0)
+			return ret;
+	} else {
+		tracecmd_add_option(handle, TRACECMD_OPTION_CPUCOUNT, sizeof(int), &cpus);
+	}
+
 	handle->file_state = TRACECMD_FILE_CPU_COUNT;
 	return 0;
 }
-- 
2.33.1


  parent reply	other threads:[~2021-12-02 12:22 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-12-02 12:21 [PATCH v6 00/23] Trace file version 7 - sections Tzvetomir Stoyanov (VMware)
2021-12-02 12:21 ` [PATCH v6 01/23] trace-cmd library: Define trace file version 7 Tzvetomir Stoyanov (VMware)
2021-12-02 12:21 ` [PATCH v6 02/23] trace-cmd library: Add cache functionality to network message handler Tzvetomir Stoyanov (VMware)
2021-12-02 12:21 ` [PATCH v6 03/23] trace-cmd library: New APIs to get and set version of output handler Tzvetomir Stoyanov (VMware)
2021-12-02 12:21 ` [PATCH v6 04/23] trace-cmd library: Add internal helper function for writing headers before file sections Tzvetomir Stoyanov (VMware)
2021-12-02 12:21 ` [PATCH v6 05/23] trace-cmd library: Write header " Tzvetomir Stoyanov (VMware)
2021-12-02 12:21 ` [PATCH v6 06/23] trace-cmd library: Add multiple options sections in trace file version 7 Tzvetomir Stoyanov (VMware)
2021-12-02 12:21 ` Tzvetomir Stoyanov (VMware) [this message]
2021-12-02 12:21 ` [PATCH v6 08/23] trace-cmd library: Move CPU flyrecord trace metadata into the buffer option, for " Tzvetomir Stoyanov (VMware)
2021-12-02 12:21 ` [PATCH v6 09/23] trace-cmd library: Add section header before flyrecord trace data Tzvetomir Stoyanov (VMware)
2021-12-02 12:21 ` [PATCH v6 10/23] trace-cmd library: Fit CPU latency trace data in the new trace file version 7 format Tzvetomir Stoyanov (VMware)
2021-12-02 12:21 ` [PATCH v6 11/23] trace-cmd library: Add macro to check file state on reading Tzvetomir Stoyanov (VMware)
2021-12-02 12:21 ` [PATCH v6 12/23] trace-cmd library: Introduce sections in trace file reading logic Tzvetomir Stoyanov (VMware)
2021-12-02 12:21 ` [PATCH v6 13/23] trace-cmd library: Initialize internal sections database on file read Tzvetomir Stoyanov (VMware)
2021-12-02 12:21 ` [PATCH v6 14/23] trace-cmd library: Use sections database when reading parts of the trace file Tzvetomir Stoyanov (VMware)
2021-12-02 12:21 ` [PATCH v6 15/23] trace-cmd library: Read headers from trace file version 7 Tzvetomir Stoyanov (VMware)
2021-12-02 12:21 ` [PATCH v6 16/23] trace-cmd library: Read extended BUFFER option Tzvetomir Stoyanov (VMware)
2021-12-02 12:21 ` [PATCH v6 17/23] trace-cmd library: Handle the extended DONE option Tzvetomir Stoyanov (VMware)
2021-12-02 12:21 ` [PATCH v6 18/23] trace-cmd library: Initialize CPU data for reading from version 7 trace files Tzvetomir Stoyanov (VMware)
2021-12-02 12:21 ` [PATCH v6 19/23] trace-cmd library: Handle latency trace in version 7 files Tzvetomir Stoyanov (VMware)
2021-12-02 12:21 ` [PATCH v6 20/23] trace-cmd library: Handle buffer trace data init for " Tzvetomir Stoyanov (VMware)
2021-12-02 12:21 ` [PATCH v6 21/23] trace-cmd report: Use the new latency API to read data Tzvetomir Stoyanov (VMware)
2021-12-02 12:21 ` [PATCH v6 22/23] trace-cmd: Write buffers metadata in trace files version 6 Tzvetomir Stoyanov (VMware)
2021-12-02 12:21 ` [PATCH v6 23/23] trace-cmd report: Add new parameter for trace file version Tzvetomir Stoyanov (VMware)

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