[PATCH 05/24] gtrace: Introduce some PMU format attributes

[Zane Leung]

Add new PMU format attributes to support timestamp, context, and
synchronization controls. This allows userspace tools like perf to
pass detailed hardware configurations down to the gtrace framework.

Signed-off-by: Zane Leung <liangzhen at linux.spacemit.com>
---
 drivers/hwtracing/gtrace/gtrace-perf.c | 12 ++++++++++++
 include/linux/gtrace.h                 |  7 +++++++
 2 files changed, 19 insertions(+)

diff --git a/drivers/hwtracing/gtrace/gtrace-perf.c b/drivers/hwtracing/gtrace/gtrace-perf.c
index 56713c8ee850..703c12b95665 100644
--- a/drivers/hwtracing/gtrace/gtrace-perf.c
+++ b/drivers/hwtracing/gtrace/gtrace-perf.c
@@ -323,9 +323,21 @@ static void gtrace_event_del(struct perf_event *event, int mode)
 }
 
 PMU_FORMAT_ATTR(event, "config:0-0");
+PMU_FORMAT_ATTR(context, "config:1-1");
+PMU_FORMAT_ATTR(syncmode, "config:2-3");
+PMU_FORMAT_ATTR(syncmax, "config:4-7");
+PMU_FORMAT_ATTR(timestamp, "config:8-8");
+PMU_FORMAT_ATTR(tsmode, "config:9-11");
+PMU_FORMAT_ATTR(tsprescale, "config:12-13");
 
 static struct attribute *gtrace_pmu_formats_attr[] = {
 	&format_attr_event.attr,
+	&format_attr_context.attr,
+	&format_attr_syncmode.attr,
+	&format_attr_syncmax.attr,
+	&format_attr_timestamp.attr,
+	&format_attr_tsmode.attr,
+	&format_attr_tsprescale.attr,
 	NULL,
 };
 
diff --git a/include/linux/gtrace.h b/include/linux/gtrace.h
index 0a017f1f888d..76b1aa9cfe79 100644
--- a/include/linux/gtrace.h
+++ b/include/linux/gtrace.h
@@ -14,6 +14,13 @@
 #include <linux/property.h>
 #include <linux/types.h>
 
+#define GTRACE_PMU_ATTR_CFG_CONTEXT_SHIFT	1
+#define GTRACE_PMU_ATTR_CFG_SYNCMODE_MASK	GENMASK(3, 2)
+#define GTRACE_PMU_ATTR_CFG_SYNCMAX_MASK	GENMASK(7, 4)
+#define GTRACE_PMU_ATTR_CFG_TIMESTAMP_SHIFT	8
+#define GTRACE_PMU_ATTR_CFG_TSMODE_MASK		GENMASK(11, 9)
+#define GTRACE_PMU_ATTR_CFG_TSPRESCALE_MASK	GENMASK(13, 12)
+
 extern struct mutex gtrace_mutex;
 
 /*
-- 
2.34.1