From: Daniel Xu <dxu@dxuuu.xyz>
To: songliubraving@fb.com, yhs@fb.com, andriin@fb.com,
peterz@infraded.org, mingo@redhat.com, acme@kernel.org
Cc: Daniel Xu <dxu@dxuuu.xyz>,
ast@fb.com, alexander.shishkin@linux.intel.com, jolsa@redhat.com,
namhyung@kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH v2 bpf-next 3/4] tracing/probe: Sync perf_event.h to tools
Date: Fri, 9 Aug 2019 14:46:41 -0700 [thread overview]
Message-ID: <20190809214642.12078-4-dxu@dxuuu.xyz> (raw)
In-Reply-To: <20190809214642.12078-1-dxu@dxuuu.xyz>
Signed-off-by: Daniel Xu <dxu@dxuuu.xyz>
---
tools/include/uapi/linux/perf_event.h | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)
diff --git a/tools/include/uapi/linux/perf_event.h b/tools/include/uapi/linux/perf_event.h
index 7198ddd0c6b1..65faa9b2a3b4 100644
--- a/tools/include/uapi/linux/perf_event.h
+++ b/tools/include/uapi/linux/perf_event.h
@@ -447,6 +447,24 @@ struct perf_event_query_bpf {
__u32 ids[0];
};
+/*
+ * Structure used by below PERF_EVENT_IOC_QUERY_PROBE command
+ * to query information about the probe attached to the perf
+ * event. Currently only supports [uk]probes.
+ */
+struct perf_event_query_probe {
+ /*
+ * Set by the kernel to indicate number of times this probe
+ * was temporarily disabled
+ */
+ __u64 nmissed;
+ /*
+ * Set by the kernel to indicate number of times this probe
+ * was hit
+ */
+ __u64 nhit;
+};
+
/*
* Ioctls that can be done on a perf event fd:
*/
@@ -462,6 +480,7 @@ 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('$', 11, struct perf_event_attr *)
+#define PERF_EVENT_IOC_QUERY_PROBE _IOR('$', 12, struct perf_event_query_probe *)
enum perf_event_ioc_flags {
PERF_IOC_FLAG_GROUP = 1U << 0,
--
2.20.1
next prev parent reply other threads:[~2019-08-09 21:47 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-09 21:46 [PATCH v2 bpf-next 0/4] tracing/probe: Add PERF_EVENT_IOC_QUERY_PROBE Daniel Xu
2019-08-09 21:46 ` [PATCH v2 bpf-next 1/4] tracing/probe: Add PERF_EVENT_IOC_QUERY_PROBE ioctl Daniel Xu
2019-08-12 15:56 ` Andrii Nakryiko
2019-08-13 0:38 ` Daniel Xu
2019-08-13 19:48 ` Andrii Nakryiko
2019-08-13 21:47 ` Song Liu
2019-08-13 23:07 ` Daniel Xu
2019-08-09 21:46 ` [PATCH v2 bpf-next 2/4] libbpf: Add helpers to extract perf fd from bpf_link Daniel Xu
2019-08-12 16:02 ` Andrii Nakryiko
2019-08-09 21:46 ` Daniel Xu [this message]
2019-08-09 21:46 ` [PATCH v2 bpf-next 4/4] tracing/probe: Add self test for PERF_EVENT_IOC_QUERY_PROBE Daniel Xu
2019-08-12 17:46 ` Andrii Nakryiko
2019-08-09 21:50 ` [PATCH v2 bpf-next 0/4] tracing/probe: Add PERF_EVENT_IOC_QUERY_PROBE Daniel Xu
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