From: Daniel Xu <dxu@dxuuu.xyz>
To: bpf@vger.kernel.org, songliubraving@fb.com, yhs@fb.com,
andriin@fb.com, peterz@infradead.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,
kernel-team@fb.com
Subject: [PATCH v4 bpf-next 3/4] tracing/probe: Sync perf_event.h to tools
Date: Tue, 20 Aug 2019 14:48:18 -0700 [thread overview]
Message-ID: <20190820214819.16154-4-dxu@dxuuu.xyz> (raw)
In-Reply-To: <20190820214819.16154-1-dxu@dxuuu.xyz>
Signed-off-by: Daniel Xu <dxu@dxuuu.xyz>
---
tools/include/uapi/linux/perf_event.h | 23 +++++++++++++++++++++++
1 file changed, 23 insertions(+)
diff --git a/tools/include/uapi/linux/perf_event.h b/tools/include/uapi/linux/perf_event.h
index 7198ddd0c6b1..8783d29a807a 100644
--- a/tools/include/uapi/linux/perf_event.h
+++ b/tools/include/uapi/linux/perf_event.h
@@ -447,6 +447,28 @@ 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 {
+ /*
+ * Size of structure for forward/backward compatibility
+ */
+ __u64 size;
+ /*
+ * 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 +484,7 @@ 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,
--
2.21.0
next prev parent reply other threads:[~2019-08-20 21:49 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-20 21:48 [PATCH v4 bpf-next 0/4] tracing/probe: Add PERF_EVENT_IOC_QUERY_PROBE Daniel Xu
2019-08-20 21:48 ` [PATCH v4 bpf-next 1/4] tracing/probe: Add PERF_EVENT_IOC_QUERY_PROBE ioctl Daniel Xu
2019-08-20 21:48 ` [PATCH v4 bpf-next 2/4] libbpf: Add helpers to extract perf fd from bpf_link Daniel Xu
2019-08-20 21:48 ` Daniel Xu [this message]
2019-08-20 21:48 ` [PATCH v4 bpf-next 4/4] tracing/probe: Add self test for PERF_EVENT_IOC_QUERY_PROBE Daniel Xu
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