linux-kernel - [PATCH 3/5] platform/x86/intel/ifs: Add current batch number to trace output

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Date: Thu, 25 Jan 2024 00:22:52 -0800
From: Ashok Raj <ashok.raj@...el.com>
To: Hans de Goede <hdegoede@...hat.com>,
	Ilpo Jarvinen <ilpo.jarvinen@...ux.intel.com>,
	markgross@...nel.org
Cc: Jithu Joseph <jithu.joseph@...el.com>,
	rostedt@...dmis.org,
	ashok.raj@...el.com,
	tony.luck@...el.com,
	LKML <linux-kernel@...r.kernel.org>,
	platform-driver-x86@...r.kernel.org,
	patches@...ts.linux.dev,
	pengfei.xu@...el.com
Subject: [PATCH 3/5] platform/x86/intel/ifs: Add current batch number to trace output

Add the current batch number in the trace output. When there are failures,
it's important to know which test content resulted in failure.

#           TASK-PID     CPU#  |||||  TIMESTAMP  FUNCTION
#              | |         |   |||||     |         |
     migration/0-18      [000] d..1. 527287.084668: ifs_status: batch: 02, start: 0000, stop: 007f, status: 0000000000007f80
   migration/128-785     [128] d..1. 527287.084669: ifs_status: batch: 02, start: 0000, stop: 007f, status: 0000000000007f80

Signed-off-by: Ashok Raj <ashok.raj@...el.com>
Reviewed-by: Tony Luck <tony.luck@...el.com>
---
 include/trace/events/intel_ifs.h         | 9 ++++++---
 drivers/platform/x86/intel/ifs/runtest.c | 2 +-
 2 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/include/trace/events/intel_ifs.h b/include/trace/events/intel_ifs.h
index 8462dfb7a020..8ce2de120f2d 100644
--- a/include/trace/events/intel_ifs.h
+++ b/include/trace/events/intel_ifs.h
@@ -10,23 +10,26 @@
 
 TRACE_EVENT(ifs_status,
 
-	TP_PROTO(int start, int stop, u64 status),
+	TP_PROTO(int batch, int start, int stop, u64 status),
 
-	TP_ARGS(start, stop, status),
+	TP_ARGS(batch, start, stop, status),
 
 	TP_STRUCT__entry(
+		__field(	int,	batch	)
 		__field(	u64,	status	)
 		__field(	u16,	start	)
 		__field(	u16,	stop	)
 	),
 
 	TP_fast_assign(
+		__entry->batch	= batch;
 		__entry->start	= start;
 		__entry->stop	= stop;
 		__entry->status	= status;
 	),
 
-	TP_printk("start: %.4x, stop: %.4x, status: %.16llx",
+	TP_printk("batch: %.2d, start: %.4x, stop: %.4x, status: %.16llx",
+		__entry->batch,
 		__entry->start,
 		__entry->stop,
 		__entry->status)
diff --git a/drivers/platform/x86/intel/ifs/runtest.c b/drivers/platform/x86/intel/ifs/runtest.c
index c8352ffb9195..21dc0046fd9b 100644
--- a/drivers/platform/x86/intel/ifs/runtest.c
+++ b/drivers/platform/x86/intel/ifs/runtest.c
@@ -176,7 +176,7 @@ static int doscan(void *data)
 	wrmsrl(MSR_ACTIVATE_SCAN, params->activate->data);
 	rdmsrl(MSR_SCAN_STATUS, status.data);
 
-	trace_ifs_status(start, stop, status.data);
+	trace_ifs_status(ifsd->cur_batch, start, stop, status.data);
 
 	/* Pass back the result of the scan */
 	if (cpu == first)
-- 
2.39.2