[PATCH v4 1/6] perf: Introduce ioctl to communicate driver configuration to kernel

[Mathieu Poirier]

Adding a new IOCTL command to communicate PMU specific configuration to
PMU kernel drivers.  This can be anything a PMU might need for
configuration that doesn't fit in the perf_event_attr structure, such
as the CoreSight sink to use for a session.

Signed-off-by: Mathieu Poirier <mathieu.poir...@linaro.org>
---
 include/uapi/linux/perf_event.h       | 1 +
 tools/include/uapi/linux/perf_event.h | 1 +
 2 files changed, 2 insertions(+)

diff --git a/include/uapi/linux/perf_event.h b/include/uapi/linux/perf_event.h
index 9de8780ac8d9..bb558caeb33b 100644
--- a/include/uapi/linux/perf_event.h
+++ b/include/uapi/linux/perf_event.h
@@ -462,6 +462,7 @@ struct perf_event_query_bpf {
 #define PERF_EVENT_IOC_PAUSE_OUTPUT            _IOW('$', 9, __u32)
 #define PERF_EVENT_IOC_QUERY_BPF               _IOWR('$', 10, struct 
perf_event_query_bpf *)
 #define PERF_EVENT_IOC_MODIFY_ATTRIBUTES       _IOW('$', 11, struct 
perf_event_attr *)
+#define PERF_EVENT_IOC_SET_DRV_CONFIG          _IOW('$', 12, char *)
 
 enum perf_event_ioc_flags {
        PERF_IOC_FLAG_GROUP             = 1U << 0,
diff --git a/tools/include/uapi/linux/perf_event.h 
b/tools/include/uapi/linux/perf_event.h
index 9de8780ac8d9..bb558caeb33b 100644
--- a/tools/include/uapi/linux/perf_event.h
+++ b/tools/include/uapi/linux/perf_event.h
@@ -462,6 +462,7 @@ struct perf_event_query_bpf {
 #define PERF_EVENT_IOC_PAUSE_OUTPUT            _IOW('$', 9, __u32)
 #define PERF_EVENT_IOC_QUERY_BPF               _IOWR('$', 10, struct 
perf_event_query_bpf *)
 #define PERF_EVENT_IOC_MODIFY_ATTRIBUTES       _IOW('$', 11, struct 
perf_event_attr *)
+#define PERF_EVENT_IOC_SET_DRV_CONFIG          _IOW('$', 12, char *)
 
 enum perf_event_ioc_flags {
        PERF_IOC_FLAG_GROUP             = 1U << 0,
-- 
2.7.4