Re: [RESEND PATCH v5 1/6] perf: Introduce ioctl to communicate driver configuration to kernel
From: Greg KH <gregkh@linuxfoundation.org>
Date: 2018-12-19 08:29:11
Also in:
linux-s390, lkml
On Mon, Dec 17, 2018 at 10:21:41AM -0700, Mathieu Poirier wrote:
quoted hunk ↗ jump to hunk
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.poirier@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..a39d8dc2e7a9 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, __u64 *) 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..a39d8dc2e7a9 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, __u64 *)
A pointer to an unknown structure? That's just asking for abuse :( _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel