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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 v4 12/23] trace-cmd: Remove unneeded multiply in events timestamp reading
Date: Thu, 25 Mar 2021 08:40:44 +0200
Message-ID: <20210325064055.539554-13-tz.stoyanov@gmail.com> (raw)
In-Reply-To: <20210325064055.539554-1-tz.stoyanov@gmail.com>

When the event timestamp is converted to seconds, the local variable
that holds this timestamp is converted to seconds also. As this
variable is not used in the function later, this conversion in not
needed.

Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com>
---
 lib/trace-cmd/trace-input.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/lib/trace-cmd/trace-input.c b/lib/trace-cmd/trace-input.c
index 67915f25..be8a7919 100644
--- a/lib/trace-cmd/trace-input.c
+++ b/lib/trace-cmd/trace-input.c
@@ -1932,10 +1932,8 @@ read_again:
 
 	handle->cpu_data[cpu].timestamp = timestamp_correct(ts, handle);
 
-	if (handle->ts2secs) {
+	if (handle->ts2secs)
 		handle->cpu_data[cpu].timestamp *= handle->ts2secs;
-		ts *= handle->ts2secs;
-	}
 
 	index = kbuffer_curr_offset(kbuf);
 
-- 
2.30.2


  parent reply index

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-25  6:40 [PATCH v4 00/23] TSC trace clock to nanosecond conversion Tzvetomir Stoyanov (VMware)
2021-03-25  6:40 ` [PATCH v4 01/23] trace-cmd: Add initial perf interface in trace-cmd library Tzvetomir Stoyanov (VMware)
2021-03-25  6:40 ` [PATCH v4 02/23] trace-cmd: Extend trace-cmd dump subcommand to display the clock Tzvetomir Stoyanov (VMware)
2021-03-25  6:40 ` [PATCH v4 03/23] trace-cmd: Save only the selected clock in the trace.dat file Tzvetomir Stoyanov (VMware)
2021-03-25  6:40 ` [PATCH v4 04/23] trace-cmd: Internal refactoring, move logic for local tep handler in its own function Tzvetomir Stoyanov (VMware)
2021-03-25  6:40 ` [PATCH v4 05/23] trace-cmd: Add new local function to check if a trace clock is supported Tzvetomir Stoyanov (VMware)
2021-03-26 21:21   ` Steven Rostedt
2021-03-25  6:40 ` [PATCH v4 06/23] trace-cmd: Add new trace-cmd clock tsc2nsec Tzvetomir Stoyanov (VMware)
2021-03-25  6:40 ` [PATCH v4 07/23] trace-cmd: Define a new option for tsc2nsec conversion Tzvetomir Stoyanov (VMware)
2021-03-25  6:40 ` [PATCH v4 08/23] trace-cmd: Save information for tsc to nanoseconds conversion in trace file Tzvetomir Stoyanov (VMware)
2021-03-25  6:40 ` [PATCH v4 09/23] trace-cmd: Read information for tsc to nanoseconds conversion from " Tzvetomir Stoyanov (VMware)
2021-03-25  6:40 ` [PATCH v4 10/23] trace-cmd: Save tsc2nsec clock in trace.dat file Tzvetomir Stoyanov (VMware)
2021-03-25  6:40 ` [PATCH v4 11/23] trace-cmd: Append new options into guest trace file at the end of the tracing session Tzvetomir Stoyanov (VMware)
2021-03-25  6:40 ` Tzvetomir Stoyanov (VMware) [this message]
2021-03-25  6:40 ` [PATCH v4 13/23] trace-cmd: Perform all timestamp corrections in a single function Tzvetomir Stoyanov (VMware)
2021-03-25  6:40 ` [PATCH v4 14/23] trace-cmd: Convert tsc timestamps to nanosecods when reading trace data from a file Tzvetomir Stoyanov (VMware)
2021-03-25  6:40 ` [PATCH v4 15/23] trace-cmd: Set order and priorities when applying timestamp corrections Tzvetomir Stoyanov (VMware)
2021-03-25  6:40 ` [PATCH v4 16/23] trace-cmd: Add a new flag to disable any " Tzvetomir Stoyanov (VMware)
2021-03-25  6:40 ` [PATCH v4 17/23] trace-cmd: Change "--nodate" option to affect "--date" option only Tzvetomir Stoyanov (VMware)
2021-03-25  6:40 ` [PATCH v4 18/23] trace-cmd: Add new parameter "--raw-ts" to "trace-cmd report" command Tzvetomir Stoyanov (VMware)
2021-03-25  6:40 ` [PATCH v4 19/23] trace-cmd: Print times in TimeShift options as unsigned in trace-cmd dump Tzvetomir Stoyanov (VMware)
2021-03-25  6:40 ` [PATCH v4 20/23] trace-cmd: Use tsc clock for host-guest tracing, if available Tzvetomir Stoyanov (VMware)
2021-03-25  6:40 ` [PATCH v4 21/23] trace-cmd: Get current clock for host-guest tracing session Tzvetomir Stoyanov (VMware)
2021-03-25  6:40 ` [PATCH v4 22/23] trace-cmd: Save the trace clocks in TRACECLOCK option Tzvetomir Stoyanov (VMware)
2021-03-25  6:40 ` [PATCH v4 23/23] trace-cmd: Read at least 8 bytes trace-id option Tzvetomir Stoyanov (VMware)
2021-03-26 21:18   ` Steven Rostedt

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