linux-kernel - [PATCH 05/10] trace: platform/x86/intel/ifs: Modify scan trace

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Message-Id: <20230913183348.1349409-6-jithu.joseph@intel.com>
Date:   Wed, 13 Sep 2023 11:33:43 -0700
From:   Jithu Joseph <jithu.joseph@...el.com>
To:     hdegoede@...hat.com, markgross@...nel.org
Cc:     tglx@...utronix.de, mingo@...hat.com, bp@...en8.de,
        dave.hansen@...ux.intel.com, x86@...nel.org, hpa@...or.com,
        rostedt@...dmis.org, jithu.joseph@...el.com, ashok.raj@...el.com,
        tony.luck@...el.com, linux-kernel@...r.kernel.org,
        platform-driver-x86@...r.kernel.org, patches@...ts.linux.dev,
        ravi.v.shankar@...el.com, pengfei.xu@...el.com
Subject: [PATCH 05/10] trace: platform/x86/intel/ifs: Modify scan trace

Account for the 8/16 bit MSR bitfield width differences between
gen0 and newer generations in the scan trace path.

Signed-off-by: Jithu Joseph <jithu.joseph@...el.com>
Reviewed-by: Tony Luck <tony.luck@...el.com>
Tested-by: Pengfei Xu <pengfei.xu@...el.com>
---
 include/trace/events/intel_ifs.h         | 16 ++++++++--------
 drivers/platform/x86/intel/ifs/runtest.c |  2 +-
 2 files changed, 9 insertions(+), 9 deletions(-)

diff --git a/include/trace/events/intel_ifs.h b/include/trace/events/intel_ifs.h
index d7353024016c..af0af3f1d9b7 100644
--- a/include/trace/events/intel_ifs.h
+++ b/include/trace/events/intel_ifs.h
@@ -10,25 +10,25 @@
 
 TRACE_EVENT(ifs_status,
 
-	TP_PROTO(int cpu, union ifs_scan activate, union ifs_status status),
+	TP_PROTO(int cpu, int start, int stop, u64 status),
 
-	TP_ARGS(cpu, activate, status),
+	TP_ARGS(cpu, start, stop, status),
 
 	TP_STRUCT__entry(
 		__field(	u64,	status	)
 		__field(	int,	cpu	)
-		__field(	u8,	start	)
-		__field(	u8,	stop	)
+		__field(	u16,	start	)
+		__field(	u16,	stop	)
 	),
 
 	TP_fast_assign(
 		__entry->cpu	= cpu;
-		__entry->start	= activate.start;
-		__entry->stop	= activate.stop;
-		__entry->status	= status.data;
+		__entry->start	= start;
+		__entry->stop	= stop;
+		__entry->status	= status;
 	),
 
-	TP_printk("cpu: %d, start: %.2x, stop: %.2x, status: %llx",
+	TP_printk("cpu: %d, start: %.4x, stop: %.4x, status: %.16llx",
 		__entry->cpu,
 		__entry->start,
 		__entry->stop,
diff --git a/drivers/platform/x86/intel/ifs/runtest.c b/drivers/platform/x86/intel/ifs/runtest.c
index 4bbab6be2fa2..ba3f9ad88a82 100644
--- a/drivers/platform/x86/intel/ifs/runtest.c
+++ b/drivers/platform/x86/intel/ifs/runtest.c
@@ -206,7 +206,7 @@ static void ifs_test_core(int cpu, struct device *dev)
 
 		status.data = msrvals[1];
 
-		trace_ifs_status(cpu, activate, status);
+		trace_ifs_status(cpu, to_start, to_stop, status.data);
 
 		/* Some cases can be retried, give up for others */
 		if (!can_restart(status))
-- 
2.25.1