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| author |   Ross Zwisler <ross.zwisler@linux.intel.com> | 2018-02-03 00:26:10 -0700 |
|---|---|---|
| committer | Ross Zwisler <ross.zwisler@linux.intel.com> | 2018-02-03 00:26:10 -0700 |
| commit | d121f07691415df824e6b60520f782f6d13b3c81 (patch) | |
| tree | 422ad3cc6fd631604fef4e469e49bacba8202e52 /samples | |
| parent | libnvdimm, namespace: remove redundant initialization of 'nd_mapping' (diff) | |
| parent | dax: require 'struct page' by default for filesystem dax (diff) | |
| download | linux-dev-d121f07691415df824e6b60520f782f6d13b3c81.tar.xz linux-dev-d121f07691415df824e6b60520f782f6d13b3c81.zip | |
Merge branch 'for-4.16/dax' into libnvdimm-for-next
Diffstat (limited to 'samples')
| -rw-r--r-- | samples/bpf/bpf_load.c | 14 |
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; } |