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Date: Mon, 19 Oct 2015 22:10:22 +0800
From: kbuild test robot <lkp@...el.com>
To: Paul Osmialowski <p.osmialowsk@...sung.com>
Cc: kbuild-all@...org, Jonathan Corbet <corbet@....net>,
Arnd Bergmann <arnd@...db.de>,
Andrew Morton <akpm@...ux-foundation.org>,
Petr Mladek <pmladek@...e.cz>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Daniel Mack <daniel@...que.org>,
Kay Sievers <kay.sievers@...y.org>,
Joe Perches <joe@...ches.com>, Tejun Heo <tj@...nel.org>,
linux-kernel@...r.kernel.org, linux-doc@...r.kernel.org,
linux-api@...r.kernel.org,
Marcin Niesluchowski <m.niesluchow@...sung.com>,
Karol Lewandowski <k.lewandowsk@...sung.com>,
Paul Osmialowski <p.osmialowsk@...sung.com>,
Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
Shuah Khan <shuahkh@....samsung.com>
Subject: Re: [RFC v3 3/9] kmsg: introduce additional kmsg devices support
Hi Marcin,
[auto build test WARNING on next-20151016 -- if it's inappropriate base, please suggest rules for selecting the more suitable base]
url: https://github.com/0day-ci/linux/commits/Paul-Osmialowski/Additional-kmsg-devices/20151019-211509
config: i386-defconfig (attached as .config)
reproduce:
# save the attached .config to linux build tree
make ARCH=i386
All warnings (new ones prefixed by >>):
In file included from include/linux/fs.h:5:0,
from kernel/printk/kmsg.c:5:
kernel/printk/kmsg.c: In function 'kmsg_sys_write':
include/linux/wait.h:171:47: error: 'TASK_INTERRUPTIBLE' undeclared (first use in this function)
#define wake_up_interruptible(x) __wake_up(x, TASK_INTERRUPTIBLE, 1, NULL)
^
>> kernel/printk/kmsg.c:49:3: note: in expansion of macro 'wake_up_interruptible'
wake_up_interruptible(&log_b->wait);
^
include/linux/wait.h:171:47: note: each undeclared identifier is reported only once for each function it appears in
#define wake_up_interruptible(x) __wake_up(x, TASK_INTERRUPTIBLE, 1, NULL)
^
>> kernel/printk/kmsg.c:49:3: note: in expansion of macro 'wake_up_interruptible'
wake_up_interruptible(&log_b->wait);
^
kernel/printk/kmsg.c: In function 'kmsg_read':
include/linux/wait.h:400:31: error: 'TASK_INTERRUPTIBLE' undeclared (first use in this function)
___wait_event(wq, condition, TASK_INTERRUPTIBLE, 0, 0, \
^
include/linux/wait.h:225:52: note: in definition of macro '___wait_event'
long __int = prepare_to_wait_event(&wq, &__wait, state);\
^
include/linux/wait.h:423:11: note: in expansion of macro '__wait_event_interruptible'
__ret = __wait_event_interruptible(wq, condition); \
^
kernel/printk/kmsg.c:140:9: note: in expansion of macro 'wait_event_interruptible'
ret = wait_event_interruptible(log_b->wait,
^
include/linux/wait.h:198:43: error: 'TASK_KILLABLE' undeclared (first use in this function)
state == TASK_INTERRUPTIBLE || state == TASK_KILLABLE) \
^
include/linux/wait.h:230:7: note: in expansion of macro '___wait_is_interruptible'
if (___wait_is_interruptible(state) && __int) { \
^
include/linux/wait.h:400:2: note: in expansion of macro '___wait_event'
___wait_event(wq, condition, TASK_INTERRUPTIBLE, 0, 0, \
^
include/linux/wait.h:423:11: note: in expansion of macro '__wait_event_interruptible'
__ret = __wait_event_interruptible(wq, condition); \
^
kernel/printk/kmsg.c:140:9: note: in expansion of macro 'wait_event_interruptible'
ret = wait_event_interruptible(log_b->wait,
^
include/linux/wait.h:401:9: error: implicit declaration of function 'schedule' [-Werror=implicit-function-declaration]
schedule())
^
include/linux/wait.h:240:3: note: in definition of macro '___wait_event'
cmd; \
^
include/linux/wait.h:423:11: note: in expansion of macro '__wait_event_interruptible'
__ret = __wait_event_interruptible(wq, condition); \
^
kernel/printk/kmsg.c:140:9: note: in expansion of macro 'wait_event_interruptible'
ret = wait_event_interruptible(log_b->wait,
^
cc1: some warnings being treated as errors
vim +/wake_up_interruptible +49 kernel/printk/kmsg.c
1 #include <linux/printk.h>
2 #include <linux/kernel.h>
3 #include <linux/errno.h>
4 #include <linux/fcntl.h>
> 5 #include <linux/fs.h>
6 #include <linux/kmsg_dump.h>
7 #include <linux/moduleparam.h>
8 #include <linux/mutex.h>
9 #include <linux/spinlock.h>
10 #include <linux/slab.h>
11 #include <linux/poll.h>
12 #include <linux/rculist.h>
13 #include <linux/rcupdate.h>
14 #include <linux/stat.h>
15 #include <linux/syslog.h>
16 #include <linux/uio.h>
17 #include <linux/wait.h>
18
19 #include <asm/uaccess.h>
20
21 #include "printk.h"
22
23 /* /dev/kmsg - userspace message inject/listen interface */
24 struct devkmsg_user {
25 u64 seq;
26 u32 idx;
27 enum log_flags prev;
28 struct mutex lock;
29 char buf[CONSOLE_EXT_LOG_MAX];
30 };
31
32 static int kmsg_sys_write(int minor, int level, const char *fmt, ...)
33 {
34 va_list args;
35 int ret = -ENXIO;
36 struct log_buffer *log_b;
37
38 rcu_read_lock();
39 list_for_each_entry_rcu(log_b, &log_buf.list, list) {
40 if (log_b->minor != minor)
41 continue;
42
43 raw_spin_lock(&log_b->lock);
44
45 va_start(args, fmt);
46 log_format_and_store(log_b, 1 /* LOG_USER */, level,
47 NULL, 0, fmt, args);
48 va_end(args);
> 49 wake_up_interruptible(&log_b->wait);
50
51 raw_spin_unlock(&log_b->lock);
52
---
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