| Message ID | 1556812610-27957-1-git-send-email-vgupta@synopsys.com |
|---|---|
| State | New |
| Headers | show |
| Series | [v2] tools/bpf: fix perf build error with uClibc (seen on ARC) | expand |
On Thu, May 2, 2019 at 8:57 AM Vineet Gupta <Vineet.Gupta1@synopsys.com> wrote: > > When build perf for ARC recently, there was a build failure due to lack > of __NR_bpf. > > | Auto-detecting system features: > | > | ... get_cpuid: [ OFF ] > | ... bpf: [ on ] > | > | # error __NR_bpf not defined. libbpf does not support your arch. > ^~~~~ > | bpf.c: In function 'sys_bpf': > | bpf.c:66:17: error: '__NR_bpf' undeclared (first use in this function) > | return syscall(__NR_bpf, cmd, attr, size); > | ^~~~~~~~ > | sys_bpf > > Signed-off-by: Vineet Gupta <vgupta@synopsys.com> Acked-by: Yonghong Song <yhs@fb.com> > --- > v1 -> v2 > - Only add syscall nr for ARC, as asm-generic won't work with arm/sh [Y Song] > --- > tools/lib/bpf/bpf.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/tools/lib/bpf/bpf.c b/tools/lib/bpf/bpf.c > index 9cd015574e83..d82edadf7589 100644 > --- a/tools/lib/bpf/bpf.c > +++ b/tools/lib/bpf/bpf.c > @@ -46,6 +46,8 @@ > # define __NR_bpf 349 > # elif defined(__s390__) > # define __NR_bpf 351 > +# elif defined(__arc__) > +# define __NR_bpf 280 > # else > # error __NR_bpf not defined. libbpf does not support your arch. > # endif > -- > 2.7.4 >
On Thu, May 2, 2019 at 1:20 PM Y Song <ys114321@gmail.com> wrote: > > On Thu, May 2, 2019 at 8:57 AM Vineet Gupta <Vineet.Gupta1@synopsys.com> wrote: > > > > When build perf for ARC recently, there was a build failure due to lack > > of __NR_bpf. > > > > | Auto-detecting system features: > > | > > | ... get_cpuid: [ OFF ] > > | ... bpf: [ on ] > > | > > | # error __NR_bpf not defined. libbpf does not support your arch. > > ^~~~~ > > | bpf.c: In function 'sys_bpf': > > | bpf.c:66:17: error: '__NR_bpf' undeclared (first use in this function) > > | return syscall(__NR_bpf, cmd, attr, size); > > | ^~~~~~~~ > > | sys_bpf > > > > Signed-off-by: Vineet Gupta <vgupta@synopsys.com> > > Acked-by: Yonghong Song <yhs@fb.com> Applied. Thanks
diff --git a/tools/lib/bpf/bpf.c b/tools/lib/bpf/bpf.c index 9cd015574e83..d82edadf7589 100644 --- a/tools/lib/bpf/bpf.c +++ b/tools/lib/bpf/bpf.c @@ -46,6 +46,8 @@ # define __NR_bpf 349 # elif defined(__s390__) # define __NR_bpf 351 +# elif defined(__arc__) +# define __NR_bpf 280 # else # error __NR_bpf not defined. libbpf does not support your arch. # endif
When build perf for ARC recently, there was a build failure due to lack of __NR_bpf. | Auto-detecting system features: | | ... get_cpuid: [ OFF ] | ... bpf: [ on ] | | # error __NR_bpf not defined. libbpf does not support your arch. ^~~~~ | bpf.c: In function 'sys_bpf': | bpf.c:66:17: error: '__NR_bpf' undeclared (first use in this function) | return syscall(__NR_bpf, cmd, attr, size); | ^~~~~~~~ | sys_bpf Signed-off-by: Vineet Gupta <vgupta@synopsys.com> --- v1 -> v2 - Only add syscall nr for ARC, as asm-generic won't work with arm/sh [Y Song] --- tools/lib/bpf/bpf.c | 2 ++ 1 file changed, 2 insertions(+)