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| author | Teng Qin | 2017-06-03 06:03:53 +0200 |
|---|---|---|
| committer | David S. Miller | 2017-06-05 03:58:15 +0200 |
| commit | 41e9a8046c92e26a68fdf5a4cb831b7c60113602 (patch) | |
| tree | 63fab2b95741918a420f0a8d7b6eb3966e043fdb /samples/bpf/bpf_helpers.h | |
| parent | perf, bpf: Add BPF support to all perf_event types (diff) | |
| download | kernel-qcow2-linux-41e9a8046c92e26a68fdf5a4cb831b7c60113602.tar.gz kernel-qcow2-linux-41e9a8046c92e26a68fdf5a4cb831b7c60113602.tar.xz kernel-qcow2-linux-41e9a8046c92e26a68fdf5a4cb831b7c60113602.zip | |
samples/bpf: add tests for more perf event types
$ trace_event
tests attaching BPF program to HW_CPU_CYCLES, SW_CPU_CLOCK, HW_CACHE_L1D and other events.
It runs 'dd' in the background while bpf program collects user and kernel
stack trace on counter overflow.
User space expects to see sys_read and sys_write in the kernel stack.
$ tracex6
tests reading of various perf counters from BPF program.
Both tests were refactored to increase coverage and be more accurate.
Signed-off-by: Teng Qin <qinteng@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'samples/bpf/bpf_helpers.h')
| -rw-r--r-- | samples/bpf/bpf_helpers.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/samples/bpf/bpf_helpers.h b/samples/bpf/bpf_helpers.h index 9a9c95f2c9fb..51e567bc70fc 100644 --- a/samples/bpf/bpf_helpers.h +++ b/samples/bpf/bpf_helpers.h @@ -31,7 +31,8 @@ static unsigned long long (*bpf_get_current_uid_gid)(void) = (void *) BPF_FUNC_get_current_uid_gid; static int (*bpf_get_current_comm)(void *buf, int buf_size) = (void *) BPF_FUNC_get_current_comm; -static int (*bpf_perf_event_read)(void *map, int index) = +static unsigned long long (*bpf_perf_event_read)(void *map, + unsigned long long flags) = (void *) BPF_FUNC_perf_event_read; static int (*bpf_clone_redirect)(void *ctx, int ifindex, int flags) = (void *) BPF_FUNC_clone_redirect; |