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Message-ID: <1556812610-27957-1-git-send-email-vgupta@synopsys.com> Date: Thu, 2 May 2019 08:56:50 -0700 From: Vineet Gupta <Vineet.Gupta1@...opsys.com> To: Alexei Starovoitov <ast@...nel.org>, Daniel Borkmann <daniel@...earbox.net> CC: <netdev@...r.kernel.org>, Wang Nan <wangnan0@...wei.com>, Song Liu <songliubraving@...com>, Yonghong Song <yhs@...com>, Martin KaFai Lau <kafai@...com>, <bpf@...r.kernel.org>, <linux-kernel@...r.kernel.org>, <linux-snps-arc@...ts.infradead.org>, <linux-perf-users@...r.kernel.org>, <arnaldo.melo@...il.com>, Y Song <ys114321@...il.com>, Vineet Gupta <Vineet.Gupta1@...opsys.com> Subject: [PATCH v2] tools/bpf: fix perf build error with uClibc (seen on ARC) 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@...opsys.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
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