Re: [PATCH] device-mapper: Convert printks to pr_<level> macros

From: Joe Perches
Date: Tue Apr 18 2017 - 15:13:27 EST

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In reply to: Joe Perches: "[RFC] using #pragma push_macro and pop_macro"
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(wrote this yesterday, neglected to send)

On Tue, 2017-04-18 at 05:02 +0800, kbuild test robot wrote:
> Hi Joe,

Hello Fengguang's robot.

> [auto build test ERROR on v4.9-rc8]
> [also build test ERROR on next-20170413]
> [if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
>
> url: https://github.com/0day-ci/linux/commits/Joe-Perches/device-mapper-Convert-printks-to-pr_-level-macros/20170418-030508
> config: i386-allmodconfig (attached as .config)
> compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901
> reproduce:
> # save the attached .config to linux build tree
> make ARCH=i386
>
> All error/warnings (new ones prefixed by >>):
>
> In file included from fs/nfs/blocklayout/blocklayout.h:35:0,
> from fs/nfs/blocklayout/dev.c:11:
> fs/nfs/blocklayout/dev.c: In function 'bl_free_device':
> > > include/linux/device-mapper.h:536:34: error: expected ')' before 'DM_MSG_PREFIX'
>
> #define pr_fmt(fmt) DM_NAME ": " DM_MSG_PREFIX ": " fmt
> ^
> > > include/linux/printk.h:277:18: note: in expansion of macro 'pr_fmt'
>
> printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
> ^~~~~~
> > > fs/nfs/blocklayout/dev.c:33:5: note: in expansion of macro 'pr_err'
>
> pr_err("failed to unregister PR key.\n");
> ^~~~~~
> fs/nfs/blocklayout/dev.c: In function 'nfs4_block_decode_volume':

Right.

I didn't compile the all the files that #include device-mapper.h
only drivers/md/.

My mistake. I'll investigate and possibly resubmit.

(investigated and sent email about possible #pragma macro_push use)

> > > include/linux/device-mapper.h:536:34: error: expected ')' before 'DM_MSG_PREFIX'
>
> #define pr_fmt(fmt) DM_NAME ": " DM_MSG_PREFIX ": " fmt
> ^
> include/linux/printk.h:284:19: note: in expansion of macro 'pr_fmt'
> printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
> ^~~~~~
> > > fs/nfs/blocklayout/dev.c:81:5: note: in expansion of macro 'pr_info'
>
> pr_info("signature too long: %d\n",
> ^~~~~~~
> fs/nfs/blocklayout/dev.c: In function 'bl_validate_designator':
> > > include/linux/device-mapper.h:536:34: error: expected ')' before 'DM_MSG_PREFIX'
>
> #define pr_fmt(fmt) DM_NAME ": " DM_MSG_PREFIX ": " fmt
> ^
> > > include/linux/printk.h:277:18: note: in expansion of macro 'pr_fmt'
>
> printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
> ^~~~~~
> fs/nfs/blocklayout/dev.c:287:3: note: in expansion of macro 'pr_err'
> pr_err("pNFS: unsupported designator "
> ^~~~~~
> > > include/linux/device-mapper.h:536:34: error: expected ')' before 'DM_MSG_PREFIX'
>
> #define pr_fmt(fmt) DM_NAME ": " DM_MSG_PREFIX ": " fmt
> ^
> > > include/linux/printk.h:277:18: note: in expansion of macro 'pr_fmt'
>
> printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
> ^~~~~~
> fs/nfs/blocklayout/dev.c:294:3: note: in expansion of macro 'pr_err'
> pr_err("pNFS: invalid designator "
> ^~~~~~
> fs/nfs/blocklayout/dev.c: In function 'bl_open_udev_path':
> > > include/linux/device-mapper.h:536:34: error: expected ')' before 'DM_MSG_PREFIX'
>
> #define pr_fmt(fmt) DM_NAME ": " DM_MSG_PREFIX ": " fmt
> ^
> include/linux/printk.h:279:22: note: in expansion of macro 'pr_fmt'
> printk(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__)
> ^~~~~~
> include/linux/printk.h:280:17: note: in expansion of macro 'pr_warning'
> #define pr_warn pr_warning
> ^~~~~~~~~~
> > > fs/nfs/blocklayout/dev.c:320:3: note: in expansion of macro 'pr_warn'
>
> pr_warn("pNFS: failed to open device %s (%ld)\n",
> ^~~~~~~
> fs/nfs/blocklayout/dev.c: In function 'bl_parse_scsi':
> > > include/linux/device-mapper.h:536:34: error: expected ')' before 'DM_MSG_PREFIX'
>
> #define pr_fmt(fmt) DM_NAME ": " DM_MSG_PREFIX ": " fmt
> ^
> include/linux/printk.h:284:19: note: in expansion of macro 'pr_fmt'
> printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
> ^~~~~~
> fs/nfs/blocklayout/dev.c:373:2: note: in expansion of macro 'pr_info'
> pr_info("pNFS: using block device %s (reservation key 0x%llx)\n",
> ^~~~~~~
> > > include/linux/device-mapper.h:536:34: error: expected ')' before 'DM_MSG_PREFIX'
>
> #define pr_fmt(fmt) DM_NAME ": " DM_MSG_PREFIX ": " fmt
> ^
> > > include/linux/printk.h:277:18: note: in expansion of macro 'pr_fmt'
>
> printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
> ^~~~~~
> fs/nfs/blocklayout/dev.c:378:3: note: in expansion of macro 'pr_err'
> pr_err("pNFS: block device %s does not support reservations.",
> ^~~~~~
> > > include/linux/device-mapper.h:536:34: error: expected ')' before 'DM_MSG_PREFIX'
>
> #define pr_fmt(fmt) DM_NAME ": " DM_MSG_PREFIX ": " fmt
> ^
> > > include/linux/printk.h:277:18: note: in expansion of macro 'pr_fmt'
>
> printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
> ^~~~~~
> fs/nfs/blocklayout/dev.c:386:3: note: in expansion of macro 'pr_err'
> pr_err("pNFS: failed to register key for block device %s.",
> ^~~~~~
> --
> In file included from fs/nfs/blocklayout/blocklayout.h:35:0,
> from fs/nfs/blocklayout/extent_tree.c:7:
> include/linux/netdevice.h: In function 'netdev_cap_txqueue':
> > > include/linux/device-mapper.h:536:34: error: expected ')' before 'DM_MSG_PREFIX'
>
> #define pr_fmt(fmt) DM_NAME ": " DM_MSG_PREFIX ": " fmt
> ^
> include/linux/printk.h:279:22: note: in expansion of macro 'pr_fmt'
> printk(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__)
> ^~~~~~
> > > include/linux/net.h:238:3: note: in expansion of macro 'pr_warning'
>
> function(__VA_ARGS__); \
> ^~~~~~~~
> > > include/linux/net.h:252:2: note: in expansion of macro 'net_ratelimited_function'
>
> net_ratelimited_function(pr_warn, fmt, ##__VA_ARGS__)
> ^~~~~~~~~~~~~~~~~~~~~~~~
> > > include/linux/net.h:252:27: note: in expansion of macro 'pr_warn'
>
> net_ratelimited_function(pr_warn, fmt, ##__VA_ARGS__)
> ^~~~~~~
> > > include/linux/netdevice.h:3119:3: note: in expansion of macro 'net_warn_ratelimited'
>
> net_warn_ratelimited("%s selects TX queue %d, but real number of TX queues is %d\n",
> ^~~~~~~~~~~~~~~~~~~~
> include/net/inet_connection_sock.h: In function 'inet_csk_clear_xmit_timer':
> > > include/linux/device-mapper.h:536:34: error: expected ')' before 'DM_MSG_PREFIX'
>
> #define pr_fmt(fmt) DM_NAME ": " DM_MSG_PREFIX ": " fmt
> ^
> include/linux/dynamic_debug.h:126:35: note: in expansion of macro 'pr_fmt'
> __dynamic_pr_debug(&descriptor, pr_fmt(fmt), \
> ^~~~~~
> include/linux/printk.h:309:2: note: in expansion of macro 'dynamic_pr_debug'
> dynamic_pr_debug(fmt, ##__VA_ARGS__)
> ^~~~~~~~~~~~~~~~
> > > include/net/inet_connection_sock.h:213:3: note: in expansion of macro 'pr_debug'
>
> pr_debug("%s", inet_csk_timer_bug_msg);
> ^~~~~~~~
> include/net/inet_connection_sock.h: In function 'inet_csk_reset_xmit_timer':
> > > include/linux/device-mapper.h:536:34: error: expected ')' before 'DM_MSG_PREFIX'
>
> #define pr_fmt(fmt) DM_NAME ": " DM_MSG_PREFIX ": " fmt
> ^
> include/linux/dynamic_debug.h:126:35: note: in expansion of macro 'pr_fmt'
> __dynamic_pr_debug(&descriptor, pr_fmt(fmt), \
> ^~~~~~
> include/linux/printk.h:309:2: note: in expansion of macro 'dynamic_pr_debug'
> dynamic_pr_debug(fmt, ##__VA_ARGS__)
> ^~~~~~~~~~~~~~~~
> include/net/inet_connection_sock.h:229:3: note: in expansion of macro 'pr_debug'
> pr_debug("reset_xmit_timer: sk=%p %d when=0x%lx, caller=%p\n",
> ^~~~~~~~
> > > include/linux/device-mapper.h:536:34: error: expected ')' before 'DM_MSG_PREFIX'
>
> #define pr_fmt(fmt) DM_NAME ": " DM_MSG_PREFIX ": " fmt
> ^
> include/linux/dynamic_debug.h:126:35: note: in expansion of macro 'pr_fmt'
> __dynamic_pr_debug(&descriptor, pr_fmt(fmt), \
> ^~~~~~
> include/linux/printk.h:309:2: note: in expansion of macro 'dynamic_pr_debug'
> dynamic_pr_debug(fmt, ##__VA_ARGS__)
> ^~~~~~~~~~~~~~~~
> include/net/inet_connection_sock.h:247:3: note: in expansion of macro 'pr_debug'
> pr_debug("%s", inet_csk_timer_bug_msg);
> ^~~~~~~~
>
> vim +536 include/linux/device-mapper.h
>
> 530 #endif
> 531
> 532 #ifdef pr_fmt
> 533 #undef pr_fmt
> 534 #endif
> 535
> > 536 #define pr_fmt(fmt) DM_NAME ": " DM_MSG_PREFIX ": " fmt
> 537
> 538 #define DMCRIT(fmt, ...) \
> 539 pr_crit(fmt "\n", ##__VA_ARGS__)
>
> ---
> 0-DAY kernel test infrastructure Open Source Technology Center
> https://lists.01.org/pipermail/kbuild-all Intel Corporation

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In reply to: Joe Perches: "[RFC] using #pragma push_macro and pop_macro"
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