From 41e9a8046c92e26a68fdf5a4cb831b7c60113602 Mon Sep 17 00:00:00 2001 From: Teng Qin Date: Fri, 2 Jun 2017 21:03:53 -0700 Subject: 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 Signed-off-by: Alexei Starovoitov Signed-off-by: David S. Miller --- samples/bpf/bpf_helpers.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'samples/bpf/bpf_helpers.h') 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; -- cgit v1.2.3