From: Steven Rostedt <rostedt@goodmis.org>
To: "Tzvetomir Stoyanov (VMware)" <tz.stoyanov@gmail.com>
Cc: linux-trace-devel@vger.kernel.org
Subject: Re: [PATCH v19 09/15] trace-cmd: Implement new option in trace.dat file: TRACECMD_OPTION_TIME_SHIFT
Date: Wed, 26 Feb 2020 22:49:51 -0500 [thread overview]
Message-ID: <20200226224951.2781afb2@oasis.local.home> (raw)
In-Reply-To: <20200131121111.130355-10-tz.stoyanov@gmail.com>
On Fri, 31 Jan 2020 14:11:05 +0200
"Tzvetomir Stoyanov (VMware)" <tz.stoyanov@gmail.com> wrote:
> @@ -2271,6 +2390,28 @@ static int handle_options(struct tracecmd_input *handle)
> offset = strtoll(buf, NULL, 0);
> handle->ts_offset += offset;
> break;
> + case TRACECMD_OPTION_TIME_SHIFT:
> + /*
> + * long long int (8 bytes) trace session ID
> + * int (4 bytes) count of timestamp offsets.
> + * long long array of size [count] of times,
> + * when the offsets were calculated.
> + * long long array of size [count] of timestamp offsets.
> + */
> + if (size < 12 || handle->flags & TRACECMD_FL_IGNORE_DATE)
> + break;
> + handle->host.trace_id = tep_read_number(handle->pevent,
> + buf, 8);
> + handle->host.ts_samples_count = tep_read_number(handle->pevent,
> + buf + 8, 4);
> + samples_size = (8 * handle->host.ts_samples_count);
> + if (size != (12 + (2 * samples_size)))
> + break;
Instead of failing silently here, we should have some kind of warning.
-- Steve
> + handle->host.ts_samples = malloc(2 * samples_size);
> + if (!handle->host.ts_samples)
> + return -ENOMEM;
> + tsync_offset_load(handle, buf + 12);
> + break;
next prev parent reply other threads:[~2020-02-27 3:49 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-31 12:10 [PATCH v19 00/15]Timestamp synchronization of host - guest tracing session Tzvetomir Stoyanov (VMware)
2020-01-31 12:10 ` [PATCH v19 01/15] trace-cmd: Add support for negative time offsets in trace.dat file Tzvetomir Stoyanov (VMware)
2020-01-31 12:10 ` [PATCH v19 02/15] trace-cmd: Add new library API for local CPU count Tzvetomir Stoyanov (VMware)
2020-01-31 12:10 ` [PATCH v19 03/15] trace-cmd: Find and store pids of tasks, which run virtual CPUs of given VM Tzvetomir Stoyanov (VMware)
2020-02-27 4:13 ` Steven Rostedt
2020-02-27 8:30 ` Tzvetomir Stoyanov
2020-01-31 12:11 ` [PATCH v19 04/15] trace-cmd: Implement new API tracecmd_add_option_v() Tzvetomir Stoyanov (VMware)
2020-01-31 12:11 ` [PATCH v19 05/15] trace-cmd: Add new API to generate a unique ID of the tracing session Tzvetomir Stoyanov (VMware)
2020-01-31 12:11 ` [PATCH v19 06/15] trace-cmd: Store the session tracing ID in the trace.dat file Tzvetomir Stoyanov (VMware)
2020-01-31 12:11 ` [PATCH v19 07/15] trace-cmd: Add definitions of htonll() and ntohll() Tzvetomir Stoyanov (VMware)
2020-01-31 12:11 ` [PATCH v19 08/15] trace-cmd: Exchange tracing IDs between host and guest Tzvetomir Stoyanov (VMware)
2020-01-31 12:11 ` [PATCH v19 09/15] trace-cmd: Implement new option in trace.dat file: TRACECMD_OPTION_TIME_SHIFT Tzvetomir Stoyanov (VMware)
2020-02-27 3:49 ` Steven Rostedt [this message]
2020-01-31 12:11 ` [PATCH v19 10/15] trace-cmd: Add guest information in host's trace.dat file Tzvetomir Stoyanov (VMware)
2020-02-27 3:53 ` Steven Rostedt
2020-02-27 3:56 ` Steven Rostedt
2020-02-27 9:39 ` Tzvetomir Stoyanov
2020-01-31 12:11 ` [PATCH v19 11/15] trace-cmd: Add host trace clock as guest trace argument Tzvetomir Stoyanov (VMware)
2020-01-31 12:11 ` [PATCH v19 12/15] trace-cmd: Refactor few trace-cmd internal functions Tzvetomir Stoyanov (VMware)
2020-01-31 12:11 ` [PATCH v19 13/15] trace-cmd: Basic infrastructure for host - guest timestamp synchronization Tzvetomir Stoyanov (VMware)
2020-01-31 12:11 ` [PATCH v19 14/15] trace-cmd: [POC] PTP-like algorithm " Tzvetomir Stoyanov (VMware)
2020-01-31 12:11 ` [PATCH v19 15/15] trace-cmd: Debug scripts for " Tzvetomir Stoyanov (VMware)
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