From: Nam Cao <namcao@linutronix.de>
To: Gabriele Monaco <gmonaco@redhat.com>
Cc: linux-kernel@vger.kernel.org,
Steven Rostedt <rostedt@goodmis.org>,
Jonathan Corbet <corbet@lwn.net>,
Masami Hiramatsu <mhiramat@kernel.org>,
linux-trace-kernel@vger.kernel.org, linux-doc@vger.kernel.org,
Ingo Molnar <mingo@redhat.com>,
Peter Zijlstra <peterz@infradead.org>,
Tomas Glozar <tglozar@redhat.com>, Juri Lelli <jlelli@redhat.com>,
Clark Williams <williams@redhat.com>,
John Kacur <jkacur@redhat.com>
Subject: Re: [PATCH v4 12/14] rv: Replace tss and sncid monitors with more complete sts
Date: Mon, 21 Jul 2025 17:15:39 +0200 [thread overview]
Message-ID: <20250721151539.EXglDXpl@linutronix.de> (raw)
In-Reply-To: <20250721082325.71554-13-gmonaco@redhat.com>
On Mon, Jul 21, 2025 at 10:23:22AM +0200, Gabriele Monaco wrote:
> The tss monitor currently guarantees task switches can happen only while
> scheduling, whereas the sncid monitor enforces scheduling occurs with
> interrupt disabled.
>
> Replace the monitors with a more comprehensive specification which
> implies both but also ensures that:
> * each scheduler call disable interrupts to switch
> * each task switch happens with interrupts disabled
>
> Cc: Ingo Molnar <mingo@redhat.com>
> Cc: Peter Zijlstra <peterz@infradead.org>
>
> fixup sts remove sncid
Is this here by accident?
I cannot comment on the model. The CONFIG_X86_LOCAL_APIC case looks
complex, but I cannot comment on that either.
But things look fine from RV perspective, so:
Acked-by: Nam Cao <namcao@linutronix.de>
next prev parent reply other threads:[~2025-07-21 15:15 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-07-21 8:23 [PATCH v4 00/14] rv: Add monitors to validate task switch Gabriele Monaco
2025-07-21 8:23 ` [PATCH v4 01/14] tools/rv: Do not skip idle in trace Gabriele Monaco
2025-07-21 8:23 ` [PATCH v4 02/14] tools/rv: Stop gracefully also on SIGTERM Gabriele Monaco
2025-07-21 8:23 ` [PATCH v4 03/14] rv: Add da_handle_start_run_event_ to per-task monitors Gabriele Monaco
2025-07-21 8:23 ` [PATCH v4 04/14] rv: Remove trailing whitespace from tracepoint string Gabriele Monaco
2025-07-21 8:23 ` [PATCH v4 05/14] rv: Return init error when registering monitors Gabriele Monaco
2025-07-21 8:23 ` [PATCH v4 06/14] rv: Use strings in da monitors tracepoints Gabriele Monaco
2025-07-21 8:23 ` [PATCH v4 07/14] rv: Adjust monitor dependencies Gabriele Monaco
2025-07-21 8:23 ` [PATCH v4 08/14] verification/rvgen: Organise Kconfig entries for nested monitors Gabriele Monaco
2025-07-21 14:38 ` Nam Cao
2025-07-21 15:17 ` Gabriele Monaco
2025-07-21 8:23 ` [PATCH v4 09/14] tools/dot2c: Fix generated files going over 100 column limit Gabriele Monaco
2025-07-21 14:52 ` Nam Cao
2025-07-23 11:18 ` Gabriele Monaco
2025-07-21 8:23 ` [PATCH v4 10/14] rv: Retry when da monitor detects race conditions Gabriele Monaco
2025-07-21 15:01 ` Nam Cao
2025-07-21 15:23 ` Gabriele Monaco
2025-07-21 8:23 ` [PATCH v4 11/14] sched: Adapt sched tracepoints for RV task model Gabriele Monaco
2025-07-21 8:23 ` [PATCH v4 12/14] rv: Replace tss and sncid monitors with more complete sts Gabriele Monaco
2025-07-21 15:15 ` Nam Cao [this message]
2025-07-21 16:13 ` Gabriele Monaco
2025-07-21 8:23 ` [PATCH v4 13/14] rv: Add nrp and sssw per-task monitors Gabriele Monaco
2025-07-21 8:23 ` [PATCH v4 14/14] rv: Add opid per-cpu monitor Gabriele Monaco
2025-07-23 0:50 ` [PATCH v4 00/14] rv: Add monitors to validate task switch Steven Rostedt
2025-07-23 9:55 ` Gabriele Monaco
2025-07-23 14:22 ` Steven Rostedt
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