From: Song Liu <songliubraving@fb.com>
To: Christian Brauner <christian@brauner.io>
Cc: Arnd Bergmann <arnd@arndb.de>,
Luis Chamberlain <mcgrof@kernel.org>,
"Kees Cook" <keescook@chromium.org>,
Alexei Starovoitov <ast@kernel.org>,
"Daniel Borkmann" <daniel@iogearbox.net>,
Martin Lau <kafai@fb.com>, Yonghong Song <yhs@fb.com>,
Andrew Morton <akpm@linux-foundation.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"linux-fsdevel@vger.kernel.org" <linux-fsdevel@vger.kernel.org>,
"netdev@vger.kernel.org" <netdev@vger.kernel.org>,
"bpf@vger.kernel.org" <bpf@vger.kernel.org>
Subject: Re: [PATCH] bpf: fix sysctl.c warning
Date: Mon, 4 Mar 2019 20:58:59 +0000 [thread overview]
Message-ID: <C94EB246-92FE-4A8D-AD60-C3D6F8292C0E@fb.com> (raw)
In-Reply-To: <20190304205714.rhpgpp26rbaghs2i@brauner.io>
> On Mar 4, 2019, at 12:57 PM, Christian Brauner <christian@brauner.io> wrote:
>
> On Mon, Mar 04, 2019 at 09:34:12PM +0100, Arnd Bergmann wrote:
>> When CONFIG_BPF_SYSCALL or CONFIG_SYSCTL is disabled, we get
>> a warning about an unused function:
>>
>> kernel/sysctl.c:3331:12: error: 'proc_dointvec_minmax_bpf_stats' defined but not used [-Werror=unused-function]
>> static int proc_dointvec_minmax_bpf_stats(struct ctl_table *table, int write,
>>
>> The CONFIG_BPF_SYSCALL check was already handled, but the SYSCTL check
>> is needed on top.
>>
>> Fixes: 492ecee892c2 ("bpf: enable program stats")
>> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
>
> Reviewed-by: Christian Brauner <christian@brauner.io>
Acked-by: Song Liu <songliubraving@fb.com>
>
>> ---
>> kernel/sysctl.c | 2 +-
>> 1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/kernel/sysctl.c b/kernel/sysctl.c
>> index 46a0d0a14a66..b3df3ab7ac28 100644
>> --- a/kernel/sysctl.c
>> +++ b/kernel/sysctl.c
>> @@ -3330,7 +3330,7 @@ int proc_doulongvec_ms_jiffies_minmax(struct ctl_table *table, int write,
>>
>> #endif /* CONFIG_PROC_SYSCTL */
>>
>> -#ifdef CONFIG_BPF_SYSCALL
>> +#if defined(CONFIG_BPF_SYSCALL) && defined(CONFIG_SYSCTL)
>> static int proc_dointvec_minmax_bpf_stats(struct ctl_table *table, int write,
>> void __user *buffer, size_t *lenp,
>> loff_t *ppos)
>> --
>> 2.20.0
>>
next prev parent reply other threads:[~2019-03-04 20:59 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-03-04 20:34 [PATCH] bpf: fix sysctl.c warning Arnd Bergmann
2019-03-04 20:47 ` Kees Cook
2019-03-04 20:57 ` Christian Brauner
2019-03-04 20:58 ` Song Liu [this message]
2019-03-07 10:05 ` Daniel Borkmann
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