Commit 8f9e05fb authored by Wang Nan's avatar Wang Nan Committed by Arnaldo Carvalho de Melo

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: default avatarNaveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Signed-off-by: default avatarWang Nan <wangnan0@huawei.com>
Acked-by: default avatarJiri 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.comSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 3167eea2
#include <asm/unistd.h>
#include <linux/bpf.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) int main(void)
{ {
union bpf_attr attr; union bpf_attr attr;
/* Check fields in attr */
attr.prog_type = BPF_PROG_TYPE_KPROBE; attr.prog_type = BPF_PROG_TYPE_KPROBE;
attr.insn_cnt = 0; attr.insn_cnt = 0;
attr.insns = 0; attr.insns = 0;
...@@ -14,5 +28,9 @@ int main(void) ...@@ -14,5 +28,9 @@ int main(void)
attr.kern_version = 0; attr.kern_version = 0;
attr = attr; 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));
} }
...@@ -14,8 +14,8 @@ ...@@ -14,8 +14,8 @@
#include "bpf.h" #include "bpf.h"
/* /*
* When building perf, unistd.h is override. Define __NR_bpf is * When building perf, unistd.h is overrided. __NR_bpf is
* required to be defined. * required to be defined explicitly.
*/ */
#ifndef __NR_bpf #ifndef __NR_bpf
# if defined(__i386__) # if defined(__i386__)
......
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