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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 v2 3/7] trace-cmd library: Bump the trace file version to 7
Date: Thu, 29 Apr 2021 07:01:15 +0300	[thread overview]
Message-ID: <20210429040119.843617-4-tz.stoyanov@gmail.com> (raw)
In-Reply-To: <20210429040119.843617-1-tz.stoyanov@gmail.com>

Adding a compression of the trace.dat file will change its structure.
These changes are not backward compatible, the old trace-cmd binaries
will not be able to read compressed trace files. Bumping the version to
7 will prevent old trace-cmd to read such files.

Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com>
---
 lib/trace-cmd/include/trace-cmd-local.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/trace-cmd/include/trace-cmd-local.h b/lib/trace-cmd/include/trace-cmd-local.h
index e8533b22..5578f00d 100644
--- a/lib/trace-cmd/include/trace-cmd-local.h
+++ b/lib/trace-cmd/include/trace-cmd-local.h
@@ -14,7 +14,7 @@ void tracecmd_warning(const char *fmt, ...);
 void tracecmd_fatal(const char *fmt, ...);
 
 /* trace.dat file format version */
-#define FILE_VERSION 6
+#define FILE_VERSION 7
 
 #define _STR(x)	#x
 #define STR(x)	_STR(x)
-- 
2.30.2


  parent reply	other threads:[~2021-04-29  4:02 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-29  4:01 [PATCH v2 0/7] Bump trace file version Tzvetomir Stoyanov (VMware)
2021-04-29  4:01 ` [PATCH v2 1/7] trace-cmd library: Remove unused private APIs for creating trace files Tzvetomir Stoyanov (VMware)
2021-04-29  4:01 ` [PATCH v2 2/7] trace-cmd: Check if file version is supported Tzvetomir Stoyanov (VMware)
2021-04-29  4:01 ` Tzvetomir Stoyanov (VMware) [this message]
2021-04-29  4:01 ` [PATCH v2 4/7] trace-cmd library: Add new API to get file version of input handler Tzvetomir Stoyanov (VMware)
2021-04-29  4:01 ` [PATCH v2 5/7] trace-cmd library: Select the file version when writing trace file Tzvetomir Stoyanov (VMware)
2021-04-29 13:42   ` Steven Rostedt
2021-04-29  4:01 ` [PATCH v2 6/7] trace-cmd library: Extend the create file APIs to support different file version Tzvetomir Stoyanov (VMware)
2021-04-29 13:50   ` Steven Rostedt
2021-04-29  4:01 ` [PATCH v2 7/7] trace-cmd record: Add new parameter --file-version Tzvetomir Stoyanov (VMware)
2021-04-29 13:54   ` Steven Rostedt
2021-05-10  6:22 ` [PATCH v2 0/7] Bump trace file version Tzvetomir Stoyanov

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