| Message ID | 20210311131505.1901509-1-weiyongjun1@huawei.com |
|---|---|
| State | New |
| Headers | show |
| Series | [bpf-next] bpf: Make symbol 'bpf_task_storage_busy' static | expand |
> On Mar 11, 2021, at 5:15 AM, 'Wei Yongjun <weiyongjun1@huawei.com> wrote: > > From: Wei Yongjun <weiyongjun1@huawei.com> > > 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> Acked-by: Song Liu <songliubraving@fb.com> Thanks for the fix! > --- > 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 fd3c74ef608e..3ce75758d394 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) > { >
diff --git a/kernel/bpf/bpf_task_storage.c b/kernel/bpf/bpf_task_storage.c index fd3c74ef608e..3ce75758d394 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) {