On Tue, Aug 04, 2015 at 08:58:14AM +, Kaixu Xia wrote:
> +static void *perf_event_fd_array_get_ptr(struct bpf_map *map, int fd)
> +{
> + struct perf_event *event;
> + struct perf_event_attr *attr;
> +
> + event = perf_event_get(fd);
> + if (IS_ERR(event))
> + return
On Tue, Aug 04, 2015 at 10:43:35AM -0700, Alexei Starovoitov wrote:
> >+static void *perf_event_fd_array_get_ptr(struct bpf_map *map, int fd)
> >+{
> >+struct perf_event *event;
> >+struct perf_event_attr *attr;
> >+
> >+event = perf_event_get(fd);
> >+if (IS_ERR(event))
> >+
On Tue, Aug 04, 2015 at 08:58:14AM +, Kaixu Xia wrote:
> diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
> index 2027809..81fc99e 100644
> --- a/include/linux/perf_event.h
> +++ b/include/linux/perf_event.h
> @@ -641,6 +641,8 @@ extern int perf_event_init_task(struct task_
On 8/4/15 1:58 AM, Kaixu Xia wrote:
diff --git a/kernel/bpf/arraymap.c b/kernel/bpf/arraymap.c
index 45df657..b1e98ff 100644
--- a/kernel/bpf/arraymap.c
+++ b/kernel/bpf/arraymap.c
@@ -273,3 +273,60 @@ static int __init register_prog_array_map(void)
return 0;
}
late_initcall(register_
Introduce a new bpf map type 'BPF_MAP_TYPE_PERF_EVENT_ARRAY'.
This map only stores the pointer to struct perf_event. The
user space event FDs from perf_event_open() syscall are converted
to the pointer to struct perf_event and stored in map.
Signed-off-by: Kaixu Xia
---
include/linux/bpf.h
