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From: Steven Rostedt <rostedt@kernel.org>
To: linux-kernel@vger.kernel.org
Cc: Tomas Glozar <tglozar@redhat.com>, John Kacur <jkacur@redhat.com>,
	Ingo Molnar <mingo@redhat.com>,
	Peter Zijlstra <peterz@infradead.org>,
	Juri Lelli <jlelli@redhat.com>,
	Clark Williams <williams@redhat.com>,
	Nam Cao <namcao@linutronix.de>,
	Gabriele Monaco <gmonaco@redhat.com>
Subject: [for-next][PATCH 03/11] rv: Add da_handle_start_run_event_ to per-task monitors
Date: Mon, 28 Jul 2025 16:49:37 -0400	[thread overview]
Message-ID: <20250728204958.267161508@kernel.org> (raw)
In-Reply-To: 20250728204934.281385756@kernel.org

From: Gabriele Monaco <gmonaco@redhat.com>

The RV da_monitor API allows to start monitors in two ways:
da_handle_start_event_NAME and da_handle_start_run_event_NAME.
The former is used when the event is followed by the initial state of
the module, so we ignore the event but we know the monitor is in the
initial state and can start monitoring, the latter can be used if the
event can only occur in the initial state, so we do handle the event as
if the monitor was in the initial state.
This latter API is defined for implicit monitors but not per-task ones.

Define da_handle_start_run_event_NAME macro also for per-task monitors.

Cc: Ingo Molnar <mingo@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Tomas Glozar <tglozar@redhat.com>
Cc: Juri Lelli <jlelli@redhat.com>
Cc: Clark Williams <williams@redhat.com>
Cc: John Kacur <jkacur@redhat.com>
Link: https://lore.kernel.org/20250728135022.255578-2-gmonaco@redhat.com
Reviewed-by: Nam Cao <namcao@linutronix.de>
Signed-off-by: Gabriele Monaco <gmonaco@redhat.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
---
 include/rv/da_monitor.h | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/include/rv/da_monitor.h b/include/rv/da_monitor.h
index 15f9ed4e4bb6..ed3c34fe18d6 100644
--- a/include/rv/da_monitor.h
+++ b/include/rv/da_monitor.h
@@ -487,6 +487,30 @@ da_handle_start_event_##name(struct task_struct *tsk, enum events_##name event)
 	__da_handle_event_##name(da_mon, tsk, event);						\
 												\
 	return 1;										\
+}												\
+												\
+/*												\
+ * da_handle_start_run_event_##name - start monitoring and handle event				\
+ *												\
+ * This function is used to notify the monitor that the system is in the			\
+ * initial state, so the monitor can start monitoring and handling event.			\
+ */												\
+static inline bool										\
+da_handle_start_run_event_##name(struct task_struct *tsk, enum events_##name event)		\
+{												\
+	struct da_monitor *da_mon;								\
+												\
+	if (!da_monitor_enabled_##name())							\
+		return 0;									\
+												\
+	da_mon = da_get_monitor_##name(tsk);							\
+												\
+	if (unlikely(!da_monitoring_##name(da_mon)))						\
+		da_monitor_start_##name(da_mon);						\
+												\
+	__da_handle_event_##name(da_mon, tsk, event);						\
+												\
+	return 1;										\
 }
 
 /*
-- 
2.47.2



  parent reply	other threads:[~2025-07-28 20:49 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-07-28 20:49 [for-next][PATCH 00/11] verification: Updates for v6.17 Steven Rostedt
2025-07-28 20:49 ` [for-next][PATCH 01/11] rv: Fix wrong type cast in monitors_show() Steven Rostedt
2025-07-28 20:49 ` [for-next][PATCH 02/11] rv: Fix wrong type cast in reactors_show() and monitor_reactor_show() Steven Rostedt
2025-07-28 20:49 ` Steven Rostedt [this message]
2025-07-28 20:49 ` [for-next][PATCH 04/11] rv: Remove trailing whitespace from tracepoint string Steven Rostedt
2025-07-28 20:49 ` [for-next][PATCH 05/11] rv: Use strings in da monitors tracepoints Steven Rostedt
2025-07-28 20:49 ` [for-next][PATCH 06/11] rv: Adjust monitor dependencies Steven Rostedt
2025-07-28 20:49 ` [for-next][PATCH 07/11] rv: Retry when da monitor detects race conditions Steven Rostedt
2025-07-28 20:49 ` [for-next][PATCH 08/11] sched: Adapt sched tracepoints for RV task model Steven Rostedt
2025-07-28 20:49 ` [for-next][PATCH 09/11] rv: Replace tss and sncid monitors with more complete sts Steven Rostedt
2025-07-28 20:49 ` [for-next][PATCH 10/11] rv: Add nrp and sssw per-task monitors Steven Rostedt
2025-07-28 20:49 ` [for-next][PATCH 11/11] rv: Add opid per-cpu monitor Steven Rostedt

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