trace: platform/x86/intel/ifs: Add SBAF trace support

Add tracing support for the SBAF IFS tests, which may be useful for
debugging systems that fail these tests. Log details like test content
batch number, SBAF bundle ID, program index and the exact errors or
warnings encountered by each HT thread during the test.
Reviewed-by: Ashok Raj <ashok.raj@intel.com>
Reviewed-by: Tony Luck <tony.luck@intel.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Jithu Joseph <jithu.joseph@intel.com>
Signed-off-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
Link: https://lore.kernel.org/r/20240801051814.1935149-5-sathyanarayanan.kuppuswamy@linux.intel.comSigned-off-by: Hans de Goede <hdegoede@redhat.com>

drivers/platform/x86/intel/ifs/runtest.c

@@ -528,6 +528,7 @@ static int dosbaf(void *data)
 	 */
 	wrmsrl(MSR_ACTIVATE_SBAF, run_params->activate->data);
 	rdmsrl(MSR_SBAF_STATUS, status.data);
+	trace_ifs_sbaf(ifsd->cur_batch, *run_params->activate, status);
 
 	/* Pass back the result of the test */
 	if (cpu == first)

include/trace/events/intel_ifs.h

@@ -35,6 +35,33 @@ TRACE_EVENT(ifs_status,
 		__entry->status)
 );
 
+TRACE_EVENT(ifs_sbaf,
+
+	TP_PROTO(int batch, union ifs_sbaf activate, union ifs_sbaf_status status),
+
+	TP_ARGS(batch, activate, status),
+
+	TP_STRUCT__entry(
+		__field(	u64,	status	)
+		__field(	int,	batch	)
+		__field(	u16,	bundle	)
+		__field(	u16,	pgm	)
+	),
+
+	TP_fast_assign(
+		__entry->status	= status.data;
+		__entry->batch	= batch;
+		__entry->bundle	= activate.bundle_idx;
+		__entry->pgm	= activate.pgm_idx;
+	),
+
+	TP_printk("batch: 0x%.2x, bundle_idx: 0x%.4x, pgm_idx: 0x%.4x, status: 0x%.16llx",
+		__entry->batch,
+		__entry->bundle,
+		__entry->pgm,
+		__entry->status)
+);
+
 #endif /* _TRACE_IFS_H */
 
 /* This part must be outside protection */