From: Andrii Nakryiko <andriin@fb.com>
Date: Tue, 10 Mar 2020 21:30:10 -0700
Subject: tools/runqslower: Add BPF_F_CURRENT_CPU for running selftest on older
 kernels
Patch-mainline: v5.7-rc1
Git-commit: 37ccc12bbcef880e6b3fdf7e03cf9e5fe9df99f2
References: bsc#1177028

Libbpf compiles and runs subset of selftests on each PR in its Github mirror
repository. To allow still building up-to-date selftests against outdated
kernel images, add back BPF_F_CURRENT_CPU definitions back.

N.B. BCC's runqslower version ([0]) doesn't need BPF_F_CURRENT_CPU due to use of
locally checked in vmlinux.h, generated against kernel with 1aae4bdd7879 ("bpf:
Switch BPF UAPI #define constants used from BPF program side to enums")
applied.

  [0] https://github.com/iovisor/bcc/pull/2809

Fixes: 367d82f17eff (" tools/runqslower: Drop copy/pasted BPF_F_CURRENT_CPU definiton")
Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20200311043010.530620-1-andriin@fb.com
Acked-by: Gary Lin <glin@suse.com>
---
 tools/bpf/runqslower/runqslower.bpf.c |    1 +
 1 file changed, 1 insertion(+)

--- a/tools/bpf/runqslower/runqslower.bpf.c
+++ b/tools/bpf/runqslower/runqslower.bpf.c
@@ -5,6 +5,7 @@
 #include "runqslower.h"
 
 #define TASK_RUNNING 0
+#define BPF_F_CURRENT_CPU 0xffffffffULL
 
 const volatile __u64 min_us = 0;
 const volatile pid_t targ_pid = 0;