[tip: x86/cpu] x86/speculation: Add missing prototype for unpriv_ebpf_notify()

From: tip-bot2 for Josh Poimboeuf
Date: Thu Apr 28 2022 - 06:02:44 EST

The following commit has been merged into the x86/cpu branch of tip:

Commit-ID: 2147c438fde135d6c145a96e373d9348e7076f7f
Gitweb: https://git.kernel.org/tip/2147c438fde135d6c145a96e373d9348e7076f7f
Author: Josh Poimboeuf <jpoimboe@xxxxxxxxxx>
AuthorDate: Mon, 25 Apr 2022 16:40:02 -07:00
Committer: Borislav Petkov <bp@xxxxxxx>
CommitterDate: Thu, 28 Apr 2022 11:12:17 +02:00

x86/speculation: Add missing prototype for unpriv_ebpf_notify()

Fix the following warnings seen with "make W=1":

kernel/sysctl.c:183:13: warning: no previous prototype for ‘unpriv_ebpf_notify’ [-Wmissing-prototypes]
183 | void __weak unpriv_ebpf_notify(int new_state)
| ^~~~~~~~~~~~~~~~~~

arch/x86/kernel/cpu/bugs.c:659:6: warning: no previous prototype for ‘unpriv_ebpf_notify’ [-Wmissing-prototypes]
659 | void unpriv_ebpf_notify(int new_state)
| ^~~~~~~~~~~~~~~~~~

Fixes: 44a3918c8245 ("x86/speculation: Include unprivileged eBPF status in Spectre v2 mitigation reporting")
Reported-by: kernel test robot <lkp@xxxxxxxxx>
Signed-off-by: Josh Poimboeuf <jpoimboe@xxxxxxxxxx>
Signed-off-by: Borislav Petkov <bp@xxxxxxx>
Link: https://lore.kernel.org/r/5689d065f739602ececaee1e05e68b8644009608.1650930000.git.jpoimboe@xxxxxxxxxx
include/linux/bpf.h | 2 ++
1 file changed, 2 insertions(+)

diff --git a/include/linux/bpf.h b/include/linux/bpf.h
index bdb5298..ecc3d3e 100644
--- a/include/linux/bpf.h
+++ b/include/linux/bpf.h
@@ -2085,6 +2085,8 @@ void bpf_offload_dev_netdev_unregister(struct bpf_offload_dev *offdev,
struct net_device *netdev);
bool bpf_offload_dev_match(struct bpf_prog *prog, struct net_device *netdev);

+void unpriv_ebpf_notify(int new_state);
#if defined(CONFIG_NET) && defined(CONFIG_BPF_SYSCALL)
int bpf_prog_offload_init(struct bpf_prog *prog, union bpf_attr *attr);