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authorDavid S. Miller <davem@davemloft.net>2017-12-05 10:44:19 -0500
committerDavid S. Miller <davem@davemloft.net>2017-12-05 10:44:19 -0500
commit7cda4cee1366fae236678a5a6b124bab86b14973 (patch)
tree180bcb2d09e3db27050658afc36d5bac88593ed5 /samples/bpf
parenta3fde2addd5f0218b64102005a237ef727b0dc30 (diff)
parent2391f0b4808e3d5af348324d69f5f45c56a26836 (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Small overlapping change conflict ('net' changed a line, 'net-next' added a line right afterwards) in flexcan.c Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'samples/bpf')
-rw-r--r--samples/bpf/bpf_load.c14
1 files changed, 12 insertions, 2 deletions
diff --git a/samples/bpf/bpf_load.c b/samples/bpf/bpf_load.c
index 522ca9252d6c..242631aa4ea2 100644
--- a/samples/bpf/bpf_load.c
+++ b/samples/bpf/bpf_load.c
@@ -193,8 +193,18 @@ static int load_and_attach(const char *event, struct bpf_insn *prog, int size)
return -1;
}
event_fd[prog_cnt - 1] = efd;
- ioctl(efd, PERF_EVENT_IOC_ENABLE, 0);
- ioctl(efd, PERF_EVENT_IOC_SET_BPF, fd);
+ err = ioctl(efd, PERF_EVENT_IOC_ENABLE, 0);
+ if (err < 0) {
+ printf("ioctl PERF_EVENT_IOC_ENABLE failed err %s\n",
+ strerror(errno));
+ return -1;
+ }
+ err = ioctl(efd, PERF_EVENT_IOC_SET_BPF, fd);
+ if (err < 0) {
+ printf("ioctl PERF_EVENT_IOC_SET_BPF failed err %s\n",
+ strerror(errno));
+ return -1;
+ }
return 0;
}