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| author | Wang Nan <wangnan0@huawei.com> | 2016-01-11 14:47:57 +0100 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2016-01-11 23:22:20 +0100 |
| commit | 8f9e05fb298f16c0cda2e7e78b603331a79f9c10 (patch) | |
| tree | 4da7ca69cedbe6aa09a1d17fb5248ecd482b94a2 /tools/build | |
| parent | perf tools: Fix phony build target for build-test (diff) | |
| download | linux-8f9e05fb298f16c0cda2e7e78b603331a79f9c10.tar.xz linux-8f9e05fb298f16c0cda2e7e78b603331a79f9c10.zip | |
perf tools: Fix PowerPC native building
Checks BPF syscall number, turn off libbpf building on platform doesn't
correctly support sys_bpf instead of blocking compiling.
Reported-and-Tested-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Signed-off-by: Wang Nan <wangnan0@huawei.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1452520124-2073-7-git-send-email-wangnan0@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/build')
| -rw-r--r-- | tools/build/feature/test-bpf.c | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/tools/build/feature/test-bpf.c b/tools/build/feature/test-bpf.c index 062bac811af9..b389026839b9 100644 --- a/tools/build/feature/test-bpf.c +++ b/tools/build/feature/test-bpf.c @@ -1,9 +1,23 @@ +#include <asm/unistd.h> #include <linux/bpf.h> +#include <unistd.h> + +#ifndef __NR_bpf +# if defined(__i386__) +# define __NR_bpf 357 +# elif defined(__x86_64__) +# define __NR_bpf 321 +# elif defined(__aarch64__) +# define __NR_bpf 280 +# error __NR_bpf not defined. libbpf does not support your arch. +# endif +#endif int main(void) { union bpf_attr attr; + /* Check fields in attr */ attr.prog_type = BPF_PROG_TYPE_KPROBE; attr.insn_cnt = 0; attr.insns = 0; @@ -14,5 +28,9 @@ int main(void) attr.kern_version = 0; attr = attr; - return 0; + /* + * Test existence of __NR_bpf and BPF_PROG_LOAD. + * This call should fail if we run the testcase. + */ + return syscall(__NR_bpf, BPF_PROG_LOAD, attr, sizeof(attr)); } |