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authorKaixu Xia <xiakaixu@huawei.com>2015-08-06 07:02:36 +0000
committerDavid S. Miller <davem@davemloft.net>2015-08-09 22:50:06 -0700
commit47efb30274cbec1bd3c0c980a7ece328df2c16a8 (patch)
tree1393486ec4906557cdb1d9173e6e2e675bab3354 /samples/bpf/bpf_helpers.h
parent35578d7984003097af2b1e34502bc943d40c1804 (diff)
samples/bpf: example of get selected PMU counter value
This is a simple example and shows how to use the new ability to get the selected Hardware PMU counter value. Signed-off-by: Kaixu Xia <xiakaixu@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'samples/bpf/bpf_helpers.h')
-rw-r--r--samples/bpf/bpf_helpers.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/samples/bpf/bpf_helpers.h b/samples/bpf/bpf_helpers.h
index c77c872fe8ee..3a44d3a272af 100644
--- a/samples/bpf/bpf_helpers.h
+++ b/samples/bpf/bpf_helpers.h
@@ -31,6 +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) =
+ (void *) BPF_FUNC_perf_event_read;
/* llvm builtin functions that eBPF C program may use to
* emit BPF_LD_ABS and BPF_LD_IND instructions