From: Steven Rostedt <rostedt@goodmis.org>
To: "Tzvetomir Stoyanov (VMware)" <tz.stoyanov@gmail.com>
Cc: linux-trace-devel@vger.kernel.org
Subject: Re: [PATCH v21 01/13] trace-cmd: Find and store pids of tasks, which run virtual CPUs of given VM
Date: Mon, 2 Mar 2020 11:33:39 -0500 [thread overview]
Message-ID: <20200302113339.0e61b83c@gandalf.local.home> (raw)
In-Reply-To: <20200302101404.150035-2-tz.stoyanov@gmail.com>
On Mon, 2 Mar 2020 12:13:52 +0200
"Tzvetomir Stoyanov (VMware)" <tz.stoyanov@gmail.com> wrote:
> +static int set_vcpu_pid_mapping(struct guest *guest, int cpu, int pid)
> +{
> + int *cpu_pid;
> + int i;
> +
> + if (cpu >= guest->cpu_max) {
> + cpu_pid = realloc(guest->cpu_pid, (cpu + 1) * sizeof(int));
> + if (!cpu_pid)
> + return -1;
> + /* Handle sparse CPU numbers */
> + for (i = guest->cpu_max; i < cpu; i++)
> + guest->cpu_pid[i] = -1;
That needs to be: cpu_pid[i] = -1; as realloc() may have freed
guest->cpu_pid here.
-- Steve
> + guest->cpu_max = cpu + 1;
> + guest->cpu_pid = cpu_pid;
> + }
> + guest->cpu_pid[cpu] = pid;
> + return 0;
> +}
next prev parent reply other threads:[~2020-03-02 16:33 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-02 10:13 [PATCH v21 00/13] Timestamp synchronization of host - guest tracing session Tzvetomir Stoyanov (VMware)
2020-03-02 10:13 ` [PATCH v21 01/13] trace-cmd: Find and store pids of tasks, which run virtual CPUs of given VM Tzvetomir Stoyanov (VMware)
2020-03-02 16:25 ` Steven Rostedt
2020-03-02 16:33 ` Steven Rostedt [this message]
2020-03-02 10:13 ` [PATCH v21 02/13] trace-cmd: Implement new API tracecmd_add_option_v() Tzvetomir Stoyanov (VMware)
2020-03-02 10:13 ` [PATCH v21 03/13] trace-cmd: Add new API to generate a unique ID of the tracing session Tzvetomir Stoyanov (VMware)
2020-03-02 10:13 ` [PATCH v21 04/13] trace-cmd: Store the session tracing ID in the trace.dat file Tzvetomir Stoyanov (VMware)
2020-03-02 10:13 ` [PATCH v21 05/13] trace-cmd: Add definitions of htonll() and ntohll() Tzvetomir Stoyanov (VMware)
2020-03-02 10:13 ` [PATCH v21 06/13] trace-cmd: Exchange tracing IDs between host and guest Tzvetomir Stoyanov (VMware)
2020-03-02 10:13 ` [PATCH v21 07/13] trace-cmd: Implement new option in trace.dat file: TRACECMD_OPTION_TIME_SHIFT Tzvetomir Stoyanov (VMware)
2020-03-02 10:13 ` [PATCH v21 08/13] trace-cmd: Add guest information in host's trace.dat file Tzvetomir Stoyanov (VMware)
2020-03-02 10:14 ` [PATCH v21 09/13] trace-cmd: Add host trace clock as guest trace argument Tzvetomir Stoyanov (VMware)
2020-03-02 10:14 ` [PATCH v21 10/13] trace-cmd: Refactor few trace-cmd internal functions Tzvetomir Stoyanov (VMware)
2020-03-02 10:14 ` [PATCH v21 11/13] trace-cmd: Basic infrastructure for host - guest timestamp synchronization Tzvetomir Stoyanov (VMware)
2020-03-02 16:43 ` Steven Rostedt
2020-03-04 9:11 ` Tzvetomir Stoyanov
2020-03-02 10:14 ` [PATCH v21 12/13] trace-cmd: [POC] PTP-like algorithm " Tzvetomir Stoyanov (VMware)
2020-03-02 10:14 ` [PATCH v21 13/13] trace-cmd: Debug scripts for " Tzvetomir Stoyanov (VMware)
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