From 4d0b93896ff8d6795ad8d1b604e41aa850d5a635 Mon Sep 17 00:00:00 2001
From: Wei Yongjun <weiyongjun1@huawei.com>
Date: Thu, 11 Mar 2021 13:15:05 +0000
Subject: [PATCH] bpf: Make symbol 'bpf_task_storage_busy' static
The sparse tool complains as follows:
kernel/bpf/bpf_task_storage.c:23:1: warning:
symbol '__pcpu_scope_bpf_task_storage_busy' was not declared. Should it be static?
This symbol is not used outside of bpf_task_storage.c, so this
commit marks it static.
Fixes: bc235cdb423a ("bpf: Prevent deadlock from recursive bpf_task_storage_[get|delete]")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Song Liu <songliubraving@fb.com>
Link: https://lore.kernel.org/bpf/20210311131505.1901509-1-weiyongjun1@huawei.com
---
kernel/bpf/bpf_task_storage.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/bpf/bpf_task_storage.c b/kernel/bpf/bpf_task_storage.c
index fd3c74ef608ef6..3ce75758d394a4 100644
--- a/kernel/bpf/bpf_task_storage.c
+++ b/kernel/bpf/bpf_task_storage.c
@@ -20,7 +20,7 @@
DEFINE_BPF_STORAGE_CACHE(task_cache);
-DEFINE_PER_CPU(int, bpf_task_storage_busy);
+static DEFINE_PER_CPU(int, bpf_task_storage_busy);
static void bpf_task_storage_lock(void)
{
--
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