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Groups > linux.kernel > #1647462
| From | Alexei Starovoitov <ast@fb.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH net-next 1/2] perf, bpf: add support for HW_CACHE and RAW events |
| Date | 2017-05-23 00:50 +0200 |
| Message-ID | <tK4jf-3bn-7@gated-at.bofh.it> (permalink) |
| References | <tK4jf-3bn-3@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
From: Teng Qin <qinteng@fb.com> This commit adds support for attach BPF program to RAW and HW_CACHE type events, and support for read HW_CACHE type event counters in BPF program. Existing code logic already supports them, so this commit is just update Enum value checks. Signed-off-by: Teng Qin <qinteng@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Daniel Borkmann <daniel@iogearbox.net> --- kernel/bpf/arraymap.c | 1 + kernel/events/core.c | 4 +++- kernel/trace/bpf_trace.c | 1 + 3 files changed, 5 insertions(+), 1 deletion(-) diff --git a/kernel/bpf/arraymap.c b/kernel/bpf/arraymap.c index 5e00b2333c26..f32affe8c335 100644 --- a/kernel/bpf/arraymap.c +++ b/kernel/bpf/arraymap.c @@ -473,6 +473,7 @@ static void *perf_event_fd_array_get_ptr(struct bpf_map *map, goto err_out; /* fall-through */ case PERF_TYPE_RAW: + case PERF_TYPE_HW_CACHE: case PERF_TYPE_HARDWARE: ee = bpf_event_entry_gen(perf_file, map_file); if (ee) diff --git a/kernel/events/core.c b/kernel/events/core.c index 6e75a5c9412d..1b68cb751c03 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -8038,7 +8038,9 @@ static int perf_event_set_bpf_prog(struct perf_event *event, u32 prog_fd) struct bpf_prog *prog; if (event->attr.type == PERF_TYPE_HARDWARE || - event->attr.type == PERF_TYPE_SOFTWARE) + event->attr.type == PERF_TYPE_SOFTWARE || + event->attr.type == PERF_TYPE_HW_CACHE || + event->attr.type == PERF_TYPE_RAW) return perf_event_set_bpf_handler(event, prog_fd); if (event->attr.type != PERF_TYPE_TRACEPOINT) diff --git a/kernel/trace/bpf_trace.c b/kernel/trace/bpf_trace.c index 460a031c77e5..5cbda7962a32 100644 --- a/kernel/trace/bpf_trace.c +++ b/kernel/trace/bpf_trace.c @@ -249,6 +249,7 @@ BPF_CALL_2(bpf_perf_event_read, struct bpf_map *, map, u64, flags) event = ee->event; if (unlikely(event->attr.type != PERF_TYPE_HARDWARE && + event->attr.type != PERF_TYPE_HW_CACHE && event->attr.type != PERF_TYPE_RAW)) return -EINVAL; -- 2.9.3
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[PATCH net-next 0/2] perf, bpf: add support for HW_CACHE and RAW events Alexei Starovoitov <ast@fb.com> - 2017-05-23 00:50 +0200
[PATCH net-next 1/2] perf, bpf: add support for HW_CACHE and RAW events Alexei Starovoitov <ast@fb.com> - 2017-05-23 00:50 +0200
Re: [PATCH net-next 1/2] perf, bpf: add support for HW_CACHE and RAW events Peter Zijlstra <peterz@infradead.org> - 2017-05-23 09:50 +0200
Re: [PATCH net-next 1/2] perf, bpf: add support for HW_CACHE and RAW events Peter Zijlstra <peterz@infradead.org> - 2017-05-23 18:40 +0200
[PATCH net-next 2/2] samples/bpf: add samples for HW_CACHE / RAW events Alexei Starovoitov <ast@fb.com> - 2017-05-23 00:50 +0200
Re: [PATCH net-next 2/2] samples/bpf: add samples for HW_CACHE / RAW events David Miller <davem@davemloft.net> - 2017-05-23 01:30 +0200
Re: [PATCH net-next 2/2] samples/bpf: add samples for HW_CACHE / RAW events David Miller <davem@davemloft.net> - 2017-05-23 01:50 +0200
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