[PATCH] sh: fix kernel build error

[PATCH] sh: fix kernel build error

[Wanlong Gao]

   arch/sh/kernel/kgdb.c: In function 'sleeping_thread_to_gdb_regs':
>> arch/sh/kernel/kgdb.c:225:32: error: implicit declaration of function 'task_stack_page' [-Werror=implicit-function-declaration]
>> arch/sh/kernel/kgdb.c:242:23: error: dereferencing pointer to incomplete type
>> arch/sh/kernel/kgdb.c:243:22: error: dereferencing pointer to incomplete type
   arch/sh/kernel/kgdb.c: In function 'singlestep_trap_handler':
>> arch/sh/kernel/kgdb.c:310:27: error: 'SIGTRAP' undeclared (first use in this function)
   arch/sh/kernel/kgdb.c:310:27: note: each undeclared identifier is reported only once for each function it appears in
   cc1: all warnings being treated as errors

This is introduced by commit 16559ae.

CC: kbuild-all@01.org
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Wanlong Gao <gaowanlong@cn.fujitsu.com>
---
 arch/sh/kernel/kgdb.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/sh/kernel/kgdb.c b/arch/sh/kernel/kgdb.c
index 38b3139..adad46e 100644
--- a/arch/sh/kernel/kgdb.c
+++ b/arch/sh/kernel/kgdb.c
@@ -13,6 +13,7 @@
 #include <linux/kdebug.h>
 #include <linux/irq.h>
 #include <linux/io.h>
+#include <linux/sched.h>
 #include <asm/cacheflush.h>
 #include <asm/traps.h>
 
-- 
1.8.5.rc1.17.g0ecd94d

Re: [PATCH] sh: fix kernel build error

[Sergei Shtylyov]

Hello.

On 11/13/2013 05:38 PM, Wanlong Gao wrote:

>     arch/sh/kernel/kgdb.c: In function 'sleeping_thread_to_gdb_regs':
>>> arch/sh/kernel/kgdb.c:225:32: error: implicit declaration of function 'task_stack_page' [-Werror=implicit-function-declaration]
>>> arch/sh/kernel/kgdb.c:242:23: error: dereferencing pointer to incomplete type
>>> arch/sh/kernel/kgdb.c:243:22: error: dereferencing pointer to incomplete type
>     arch/sh/kernel/kgdb.c: In function 'singlestep_trap_handler':
>>> arch/sh/kernel/kgdb.c:310:27: error: 'SIGTRAP' undeclared (first use in this function)
>     arch/sh/kernel/kgdb.c:310:27: note: each undeclared identifier is reported only once for each function it appears in
>     cc1: all warnings being treated as errors

    Strange quoting...

> This is introduced by commit 16559ae.

    Please also specify that commit's summary line in parens.

> CC: kbuild-all@01.org
> Reported-by: Fengguang Wu <fengguang.wu@intel.com>
> Signed-off-by: Wanlong Gao <gaowanlong@cn.fujitsu.com>

WBR, Sergei

Re: [PATCH] sh: fix kernel build error

[Wanlong Gao]

On 11/14/2013 02:14 AM, Sergei Shtylyov wrote:
> Hello.
> 
> On 11/13/2013 05:38 PM, Wanlong Gao wrote:
> 
>>     arch/sh/kernel/kgdb.c: In function 'sleeping_thread_to_gdb_regs':
>>>> arch/sh/kernel/kgdb.c:225:32: error: implicit declaration of function 'task_stack_page' [-Werror=implicit-function-declaration]
>>>> arch/sh/kernel/kgdb.c:242:23: error: dereferencing pointer to incomplete type
>>>> arch/sh/kernel/kgdb.c:243:22: error: dereferencing pointer to incomplete type
>>     arch/sh/kernel/kgdb.c: In function 'singlestep_trap_handler':
>>>> arch/sh/kernel/kgdb.c:310:27: error: 'SIGTRAP' undeclared (first use in this function)
>>     arch/sh/kernel/kgdb.c:310:27: note: each undeclared identifier is reported only once for each function it appears in
>>     cc1: all warnings being treated as errors
> 
>    Strange quoting...

Strange? It's the build error log.

> 
>> This is introduced by commit 16559ae.
> 
>    Please also specify that commit's summary line in parens.

commit 16559ae48c76f1ceb970b9719dea62b77eb5d06b
Author: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Date:   Mon Feb 4 15:35:26 2013 -0800

    kgdb: remove #include <linux/serial_8250.h> from kgdb.h
    
    There's no reason kgdb.h itself needs to include the 8250 serial port
    header file.  So push it down to the _very_ limited number of individual
    drivers that need the values in that file, and fix up the places where
    people really wanted serial_core.h and platform_device.h.
    
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>


And the line caused this build error is:

diff --git a/include/linux/kgdb.h b/include/linux/kgdb.h
index 4dff0c6..c6e091b 100644
--- a/include/linux/kgdb.h
+++ b/include/linux/kgdb.h
@@ -13,7 +13,6 @@
 #ifndef _KGDB_H_
 #define _KGDB_H_
 
-#include <linux/serial_8250.h>
 #include <linux/linkage.h>
 #include <linux/init.h>
 #include <linux/atomic.h>


Thanks,
Wanlong Gao

> 
>> CC: kbuild-all@01.org
>> Reported-by: Fengguang Wu <fengguang.wu@intel.com>
>> Signed-off-by: Wanlong Gao <gaowanlong@cn.fujitsu.com>
> 
> WBR, Sergei
> 
> 

Re: [PATCH] sh: fix kernel build error

[Sergei Shtylyov]

Hello.

On 14-11-2013 4:26, Wanlong Gao wrote:

>>>      arch/sh/kernel/kgdb.c: In function 'sleeping_thread_to_gdb_regs':
>>>>> arch/sh/kernel/kgdb.c:225:32: error: implicit declaration of function 'task_stack_page' [-Werror=implicit-function-declaration]
>>>>> arch/sh/kernel/kgdb.c:242:23: error: dereferencing pointer to incomplete type
>>>>> arch/sh/kernel/kgdb.c:243:22: error: dereferencing pointer to incomplete type
>>>      arch/sh/kernel/kgdb.c: In function 'singlestep_trap_handler':
>>>>> arch/sh/kernel/kgdb.c:310:27: error: 'SIGTRAP' undeclared (first use in this function)
>>>      arch/sh/kernel/kgdb.c:310:27: note: each undeclared identifier is reported only once for each function it appears in
>>>      cc1: all warnings being treated as errors

>>     Strange quoting...

> Strange? It's the build error log.

    I've never seen the leading > characters in gcc's error output.

>>> This is introduced by commit 16559ae.

>>     Please also specify that commit's summary line in parens.

> commit 16559ae48c76f1ceb970b9719dea62b77eb5d06b
> Author: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> Date:   Mon Feb 4 15:35:26 2013 -0800

>      kgdb: remove #include <linux/serial_8250.h> from kgdb.h
>
>      There's no reason kgdb.h itself needs to include the 8250 serial port
>      header file.  So push it down to the _very_ limited number of individual
>      drivers that need the values in that file, and fix up the places where
>      people really wanted serial_core.h and platform_device.h.

>      Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>


> And the line caused this build error is:

> diff --git a/include/linux/kgdb.h b/include/linux/kgdb.h
> index 4dff0c6..c6e091b 100644
> --- a/include/linux/kgdb.h
> +++ b/include/linux/kgdb.h
> @@ -13,7 +13,6 @@
>   #ifndef _KGDB_H_
>   #define _KGDB_H_
>
> -#include <linux/serial_8250.h>
>   #include <linux/linkage.h>
>   #include <linux/init.h>
>   #include <linux/atomic.h>

    That's all interesting but what I asked you to do is add the summary line 
("kgdb: remove #include <linux/serial_8250.h> from kgdb.h" in this case) 
enclosed into parentheses to your commit log. There was no need to tell me all 
the gory details of your fix. :-)

> Thanks,
> Wanlong Gao

WBR, Sergei