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* [PATCH RESEND] kdump: update Documentation gdbmacros.txt
@ 2008-10-28 15:39 Qinghuang Feng
  2008-10-28 17:25 ` Qinghuang Feng
  0 siblings, 1 reply; 2+ messages in thread
From: Qinghuang Feng @ 2008-10-28 15:39 UTC (permalink / raw)
  To: Vivek Goyal; +Cc: kexec, linux-kernel, linux-doc, maneesh, alexn, vatsa

The  previous patch sent about two weeks ago has a problem:
I define an internal marco named __show_state, but it is called
with an another name "show_state". This problem efforted
only the new macros "psusr" and "pskern" introduced by me.

The problem has been fixed in this patch, and this  patch
has been tested.

BTW, I haven't got reply from original  authors of the doc,
what should I do next?

This patch is for linus-git, and it do the following:

1.updates macros in the file to fix the following errors:
(gdb) btt
There is no member named pid_list.
(gdb) bttnobp
There is no member named pid_list.

2.fix bugs in two places when iterateing thread members in a thread group

original macro:
16 define bttnobp
....
21         while ($next_t != $init_t)
...
34                 set $next_th=(((char
*)$next_t->pids[1].pid_list.next) - $pid_off)
35                 while ($next_th != $next_t)
36                         set $next_th=(struct task_struct *)$next_th
37                         printf "\npid %d; comm %s:\n", $next_t.pid,
$next_t.comm
now, we should print info about the thread member, but it  print
info of threadgroup leader repeatly.
...
3.introduce two auxiliary macros: psusr and pskern to list info of all tasks
viewed in userspace and kernelspace respectively.

The following is the testing result, bu it is test in X86 and kgdb remote
debugging environment:
a.out is a muti-thread program, and one of its threads exec the "top".
(gdb) pskern
address		state		uid	pid	ppid	comm
0xC03512F4	running		0	0	0	swapper
....
0xD9418180	sleeping	0	2379	2371	bash
0xD94191C0	sleeping	0	2383	2379	a.out
0xDC52DA20	sleeping	0	2384	2379	a.out
0xDC52D610	sleeping	0	2385	2379	a.out
0xDC52D200	sleeping	0	2386	2379	a.out
0xDC52CDF0	sleeping	0	2387	2386	top
address		state		uid	pid	ppid	comm
(gdb) btt
....
pid 2379; addr:0xd9418180; comm bash:
=====================================
do_wait + 2227 in section .text
sys_wait4 + 121 in section .text
sys_waitpid + 19 in section .text
ia32_sysenter_target + 127 in section .text
pid 2383; addr:0xd94191c0; comm a.out:
=====================================
do_nanosleep + 84 in section .text
hrtimer_nanosleep + 74 in section .text
sys_nanosleep + 66 in section .text
ia32_sysenter_target + 127 in section .text
pid 2384; addr:0xdc52da20; comm a.out:
=====================================
do_nanosleep + 84 in section .text
hrtimer_nanosleep + 74 in section .text
sys_nanosleep + 66 in section .text
ia32_sysenter_target + 127 in section .text
pid 2385; addr:0xdc52d610; comm a.out:
---Type <return> to continue, or q <return> to quit---
=====================================
do_nanosleep + 84 in section .text
hrtimer_nanosleep + 74 in section .text
sys_nanosleep + 66 in section .text
ia32_sysenter_target + 127 in section .text
pid 2386; addr:0xdc52d200; comm a.out:
=====================================
do_wait + 2227 in section .text
sys_wait4 + 121 in section .text
sys_waitpid + 19 in section .text
ia32_sysenter_target + 127 in section .text
pid 2387; addr:0xdc52cdf0; comm top:
=====================================
schedule_timeout + 109 in section .text
do_select + 1081 in section .text
core_sys_select + 440 in section .text
sys_select + 143 in section .text
ia32_sysenter_target + 127 in section .text

Signed-off-by: Qinghuang Feng <qhfeng.kernel@gmail.com>
---
diff --git a/Documentation/kdump/gdbmacros.txt
b/Documentation/kdump/gdbmacros.txt
index 9b9b454..84acf7d 100644
--- a/Documentation/kdump/gdbmacros.txt
+++ b/Documentation/kdump/gdbmacros.txt
@@ -13,39 +13,146 @@
 # Maneesh Soni <maneesh@in.ibm.com>
 #

+define __show_state
+        if ($arg0->state == 0)
+                printf "running\t\t"
+                else
+                if ($arg0->state == 1)
+                        printf "sleeping\t"
+                        else
+                        if ($arg0->state == 2)
+                                printf "disksleep\t"
+                                else
+                                if ($arg0->state == 4)
+                                        printf "zombie\t"
+                                        else
+                                        if ($arg0->state == 8)
+                                                printf "stopped\t"
+                                                else
+                                                if ($arg0->state == 16)
+                                                        printf "wpaging\t"
+                                                        else
+
printf "%d\t\t", $arg0->state
+                                                        end
+                                                end
+                                        end
+                                end
+                        end
+                end
+end
+document __show_state
+internel macro, don't call it by hand
+end
+
+
+define psusr
+        printf "address\t\tstate\t\tuid\tpid\tppid\tcomm\n"
+        set $init_t = &init_task
+        set $tasks_off=((size_t)&((struct task_struct *)0)->tasks)
+        set $next_t=(((char *)($init_t->tasks).next) - $tasks_off)
+
+        while ($next_t != $init_t)
+		set $next_t=(struct task_struct *)$next_t
+		printf "0x%08X\t", $next_t
+		__show_state $next_t
+		printf "%d\t%d\t%d\t%s\n", \
+			$next_t->uid, $next_t->pid, \
+			$next_t->parent->pid, $next_t->comm
+		set  $next_t=(char *)($next_t->tasks.next) - $tasks_off
+        end
+
+        printf "address\t\tstate\t\tuid\tpid\tppid\tcomm\n"
+        printf "----end----\n"
+
+end
+document psusr
+print information for all tasks, but not including thread members.
+This command looks like "ps -aux" in userspace.
+end
+
+
+define pskern
+        printf "address\t\tstate\t\tuid\tpid\tppid\tcomm\n"
+        set $init_t = &init_task
+        printf "0x%08X\t", $init_t
+        __show_state $init_t
+        printf "%d\t%d\t%d\t%s\n", \
+                $init_t->uid, $init_t->pid, \
+                $init_t->parent->pid, $init_t->comm
+	
+	set $tasks_off=((size_t)&((struct task_struct *)0)->tasks)
+	set $thread_off=((size_t)&((struct task_struct *)0)->thread_group.next)
+	set $next_t=(((char *)($init_t->tasks).next) - $tasks_off)
+
+	while ($next_t != $init_t)
+		set $next_t=(struct task_struct *)$next_t
+
+		printf "0x%08X\t", $next_t
+		__show_state $next_t
+		printf "%d\t%d\t%d\t%s\n", \
+			$next_t->uid, $next_t->pid, \
+			$next_t->parent->pid, $next_t->comm
+
+		set $next_th=(((char *)$next_t->thread_group.next) - $thread_off)
+
+		while ($next_th != $next_t)
+			set $next_th=(struct task_struct *)$next_th
+
+			printf "0x%08X\t", $next_th
+			__show_state $next_th
+			printf "%d\t%d\t%d\t%s\n", \
+				$next_th->uid, $next_th->pid, \
+				$next_th->parent->pid, $next_th->comm
+
+			set $next_th=(((char *)$next_th->thread_group.next) - $thread_off)
+		end
+
+		set  $next_t=(char *)($next_t->tasks.next) - $tasks_off
+        end
+
+        printf "address\t\tstate\t\tuid\tpid\tppid\tcomm\n"
+        printf "----end----\n"
+
+end
+document pskern
+print infor for all tasks viewed in kernel, including all thread members
+and swapper(PID==0).
+end
+
+
+define __prinfo_nobp
+        printf "\npid %d; addr:0x%08x; comm %s:\n", \
+                $arg0.pid, $arg0, $arg0.comm
+        printf "=====================================\n"
+        set var $stackp = $arg0.thread.sp
+        set var $stack_top = ($stackp & ~4095) + 4096
+
+        while ($stackp < $stack_top)
+                if (*($stackp) > _stext && *($stackp) < _sinittext)
+                        info symbol *($stackp)
+                end
+        set $stackp += 4
+        end
+end
+document __prinfo_nobp
+internal macro, don't call it by hand.
+end
+
+
 define bttnobp
 	set $tasks_off=((size_t)&((struct task_struct *)0)->tasks)
-	set $pid_off=((size_t)&((struct task_struct *)0)->pids[1].pid_list.next)
+	set $thread_off=((size_t)&((struct task_struct *)0)->thread_group.next)
 	set $init_t=&init_task
 	set $next_t=(((char *)($init_t->tasks).next) - $tasks_off)
+
 	while ($next_t != $init_t)
 		set $next_t=(struct task_struct *)$next_t
-		printf "\npid %d; comm %s:\n", $next_t.pid, $next_t.comm
-		printf "===================\n"
-		set var $stackp = $next_t.thread.esp
-		set var $stack_top = ($stackp & ~4095) + 4096
-
-		while ($stackp < $stack_top)
-			if (*($stackp) > _stext && *($stackp) < _sinittext)
-				info symbol *($stackp)
-			end
-			set $stackp += 4
-		end
-		set $next_th=(((char *)$next_t->pids[1].pid_list.next) - $pid_off)
+		__prinfo_nobp $next_t
+		set $next_th=(((char *)$next_t->thread_group.next) - $thread_off)
 		while ($next_th != $next_t)
 			set $next_th=(struct task_struct *)$next_th
-			printf "\npid %d; comm %s:\n", $next_t.pid, $next_t.comm
-			printf "===================\n"
-			set var $stackp = $next_t.thread.esp
-			set var $stack_top = ($stackp & ~4095) + 4096
-
-			while ($stackp < $stack_top)
-				if (*($stackp) > _stext && *($stackp) < _sinittext)
-					info symbol *($stackp)
-				end
-				set $stackp += 4
-			end
-			set $next_th=(((char *)$next_th->pids[1].pid_list.next) - $pid_off)
+			__prinfo_nobp $next_th
+			set $next_th=(((char *)$next_th->thread_group.next) - $thread_off)
 		end
 		set $next_t=(char *)($next_t->tasks.next) - $tasks_off
 	end
@@ -54,42 +161,41 @@ document bttnobp
 	dump all thread stack traces on a kernel compiled with !CONFIG_FRAME_POINTER
 end

+
+define __prinfo
+        printf "\npid %d; addr:0x%08x; comm %s:\n", \
+                $arg0.pid, $arg0, $arg0.comm
+        printf "=====================================\n"
+        set var $stackp = $arg0.thread.sp
+        set var $stack_top = ($stackp & ~4095) + 4096
+        set var $stack_bot = ($stackp & ~4095)
+
+        set $stackp = *($stackp)
+        while (($stackp < $stack_top) && ($stackp > $stack_bot))
+                set var $addr = *($stackp + 4)
+                info symbol $addr
+                set $stackp = *($stackp)
+        end
+end
+document __prinfo
+internal macro, don't call it by hand.
+end
+
+
 define btt
 	set $tasks_off=((size_t)&((struct task_struct *)0)->tasks)
-	set $pid_off=((size_t)&((struct task_struct *)0)->pids[1].pid_list.next)
+	set $thread_off=((size_t)&((struct task_struct *)0)->thread_group.next)
 	set $init_t=&init_task
 	set $next_t=(((char *)($init_t->tasks).next) - $tasks_off)
+
 	while ($next_t != $init_t)
 		set $next_t=(struct task_struct *)$next_t
-		printf "\npid %d; comm %s:\n", $next_t.pid, $next_t.comm
-		printf "===================\n"
-		set var $stackp = $next_t.thread.esp
-		set var $stack_top = ($stackp & ~4095) + 4096
-		set var $stack_bot = ($stackp & ~4095)
-
-		set $stackp = *($stackp)
-		while (($stackp < $stack_top) && ($stackp > $stack_bot))
-			set var $addr = *($stackp + 4)
-			info symbol $addr
-			set $stackp = *($stackp)
-		end
-
-		set $next_th=(((char *)$next_t->pids[1].pid_list.next) - $pid_off)
+		__prinfo $next_t
+		set $next_th=(((char *)$next_t->thread_group.next) - $thread_off)
 		while ($next_th != $next_t)
 			set $next_th=(struct task_struct *)$next_th
-			printf "\npid %d; comm %s:\n", $next_t.pid, $next_t.comm
-			printf "===================\n"
-			set var $stackp = $next_t.thread.esp
-			set var $stack_top = ($stackp & ~4095) + 4096
-			set var $stack_bot = ($stackp & ~4095)
-
-			set $stackp = *($stackp)
-			while (($stackp < $stack_top) && ($stackp > $stack_bot))
-				set var $addr = *($stackp + 4)
-				info symbol $addr
-				set $stackp = *($stackp)
-			end
-			set $next_th=(((char *)$next_th->pids[1].pid_list.next) - $pid_off)
+			__prinfo $next_th	
+			set $next_th=(((char *)$next_th->thread_group.next) - $thread_off)
 		end
 		set $next_t=(char *)($next_t->tasks.next) - $tasks_off
 	end
@@ -101,7 +207,7 @@ end
 define btpid
 	set var $pid = $arg0
 	set $tasks_off=((size_t)&((struct task_struct *)0)->tasks)
-	set $pid_off=((size_t)&((struct task_struct *)0)->pids[1].pid_list.next)
+	set $thread_off=((size_t)&((struct task_struct *)0)->thread_group)
 	set $init_t=&init_task
 	set $next_t=(((char *)($init_t->tasks).next) - $tasks_off)
 	set var $pid_task = 0
@@ -113,29 +219,19 @@ define btpid
 			set $pid_task = $next_t
 		end

-		set $next_th=(((char *)$next_t->pids[1].pid_list.next) - $pid_off)
+		set $next_th=(((char *)$next_t->thread_group.next) - $thread_off)
 		while ($next_th != $next_t)
 			set $next_th=(struct task_struct *)$next_th
 			if ($next_th.pid == $pid)
 				set $pid_task = $next_th
 			end
-			set $next_th=(((char *)$next_th->pids[1].pid_list.next) - $pid_off)
+			set $next_th=(((char *)$next_th->thread_group.next) - $thread_off)
 		end
 		set $next_t=(char *)($next_t->tasks.next) - $tasks_off
 	end

-	printf "\npid %d; comm %s:\n", $pid_task.pid, $pid_task.comm
-	printf "===================\n"
-	set var $stackp = $pid_task.thread.esp
-	set var $stack_top = ($stackp & ~4095) + 4096
-	set var $stack_bot = ($stackp & ~4095)
-
-	set $stackp = *($stackp)
-	while (($stackp < $stack_top) && ($stackp > $stack_bot))
-		set var $addr = *($stackp + 4)
-		info symbol $addr
-		set $stackp = *($stackp)
-	end
+	__prinfo $pid_task
+
 end
 document btpid
 	backtrace of pid
@@ -145,7 +241,7 @@ end
 define trapinfo
 	set var $pid = $arg0
 	set $tasks_off=((size_t)&((struct task_struct *)0)->tasks)
-	set $pid_off=((size_t)&((struct task_struct *)0)->pids[1].pid_list.next)
+	set $thread_off=((size_t)&((struct task_struct *)0)->thread_group.next)
 	set $init_t=&init_task
 	set $next_t=(((char *)($init_t->tasks).next) - $tasks_off)
 	set var $pid_task = 0
@@ -157,13 +253,13 @@ define trapinfo
 			set $pid_task = $next_t
 		end

-		set $next_th=(((char *)$next_t->pids[1].pid_list.next) - $pid_off)
+		set $next_th=(((char *)$next_t->thread_group.next) - $thread_off)
 		while ($next_th != $next_t)
 			set $next_th=(struct task_struct *)$next_th
 			if ($next_th.pid == $pid)
 				set $pid_task = $next_th
 			end
-			set $next_th=(((char *)$next_th->pids[1].pid_list.next) - $pid_off)
+			set $next_th=(((char *)$next_th->thread_group.next) - $thread_off)
 		end
 		set $next_t=(char *)($next_t->tasks.next) - $tasks_off
 	end

^ permalink raw reply	[flat|nested] 2+ messages in thread

* Re: [PATCH RESEND] kdump: update Documentation gdbmacros.txt
  2008-10-28 15:39 [PATCH RESEND] kdump: update Documentation gdbmacros.txt Qinghuang Feng
@ 2008-10-28 17:25 ` Qinghuang Feng
  0 siblings, 0 replies; 2+ messages in thread
From: Qinghuang Feng @ 2008-10-28 17:25 UTC (permalink / raw)
  To: Vivek Goyal; +Cc: kexec, linux-kernel, linux-doc, maneesh, alexn, vatsa

Oh..the patch was crashed by web-gmail.

Please ignore this patch. I will check and
resend it with kmail tomorrow

On Tue, Oct 28, 2008 at 11:39 PM, Qinghuang Feng
<qhfeng.kernel@gmail.com> wrote:
> The  previous patch sent about two weeks ago has a problem:
> I define an internal marco named __show_state, but it is called
> with an another name "show_state". This problem efforted
> only the new macros "psusr" and "pskern" introduced by me.
>
> The problem has been fixed in this patch, and this  patch
> has been tested.
>
> BTW, I haven't got reply from original  authors of the doc,
> what should I do next?
>
> This patch is for linus-git, and it do the following:
>
> 1.updates macros in the file to fix the following errors:
> (gdb) btt
> There is no member named pid_list.
> (gdb) bttnobp
> There is no member named pid_list.
>
> 2.fix bugs in two places when iterateing thread members in a thread group
>
> original macro:
> 16 define bttnobp
> ....
> 21         while ($next_t != $init_t)
> ...
> 34                 set $next_th=(((char
> *)$next_t->pids[1].pid_list.next) - $pid_off)
> 35                 while ($next_th != $next_t)
> 36                         set $next_th=(struct task_struct *)$next_th
> 37                         printf "\npid %d; comm %s:\n", $next_t.pid,
> $next_t.comm
> now, we should print info about the thread member, but it  print
> info of threadgroup leader repeatly.
> ...
> 3.introduce two auxiliary macros: psusr and pskern to list info of all tasks
> viewed in userspace and kernelspace respectively.
>
> The following is the testing result, bu it is test in X86 and kgdb remote
> debugging environment:
> a.out is a muti-thread program, and one of its threads exec the "top".
> (gdb) pskern
> address         state           uid     pid     ppid    comm
> 0xC03512F4      running         0       0       0       swapper
> ....
> 0xD9418180      sleeping        0       2379    2371    bash
> 0xD94191C0      sleeping        0       2383    2379    a.out
> 0xDC52DA20      sleeping        0       2384    2379    a.out
> 0xDC52D610      sleeping        0       2385    2379    a.out
> 0xDC52D200      sleeping        0       2386    2379    a.out
> 0xDC52CDF0      sleeping        0       2387    2386    top
> address         state           uid     pid     ppid    comm
> (gdb) btt
> ....
> pid 2379; addr:0xd9418180; comm bash:
> =====================================
> do_wait + 2227 in section .text
> sys_wait4 + 121 in section .text
> sys_waitpid + 19 in section .text
> ia32_sysenter_target + 127 in section .text
> pid 2383; addr:0xd94191c0; comm a.out:
> =====================================
> do_nanosleep + 84 in section .text
> hrtimer_nanosleep + 74 in section .text
> sys_nanosleep + 66 in section .text
> ia32_sysenter_target + 127 in section .text
> pid 2384; addr:0xdc52da20; comm a.out:
> =====================================
> do_nanosleep + 84 in section .text
> hrtimer_nanosleep + 74 in section .text
> sys_nanosleep + 66 in section .text
> ia32_sysenter_target + 127 in section .text
> pid 2385; addr:0xdc52d610; comm a.out:
> ---Type <return> to continue, or q <return> to quit---
> =====================================
> do_nanosleep + 84 in section .text
> hrtimer_nanosleep + 74 in section .text
> sys_nanosleep + 66 in section .text
> ia32_sysenter_target + 127 in section .text
> pid 2386; addr:0xdc52d200; comm a.out:
> =====================================
> do_wait + 2227 in section .text
> sys_wait4 + 121 in section .text
> sys_waitpid + 19 in section .text
> ia32_sysenter_target + 127 in section .text
> pid 2387; addr:0xdc52cdf0; comm top:
> =====================================
> schedule_timeout + 109 in section .text
> do_select + 1081 in section .text
> core_sys_select + 440 in section .text
> sys_select + 143 in section .text
> ia32_sysenter_target + 127 in section .text
>
> Signed-off-by: Qinghuang Feng <qhfeng.kernel@gmail.com>
> ---
> diff --git a/Documentation/kdump/gdbmacros.txt
> b/Documentation/kdump/gdbmacros.txt
> index 9b9b454..84acf7d 100644
> --- a/Documentation/kdump/gdbmacros.txt
> +++ b/Documentation/kdump/gdbmacros.txt
> @@ -13,39 +13,146 @@
>  # Maneesh Soni <maneesh@in.ibm.com>
>  #
>
> +define __show_state
> +        if ($arg0->state == 0)
> +                printf "running\t\t"
> +                else
> +                if ($arg0->state == 1)
> +                        printf "sleeping\t"
> +                        else
> +                        if ($arg0->state == 2)
> +                                printf "disksleep\t"
> +                                else
> +                                if ($arg0->state == 4)
> +                                        printf "zombie\t"
> +                                        else
> +                                        if ($arg0->state == 8)
> +                                                printf "stopped\t"
> +                                                else
> +                                                if ($arg0->state == 16)
> +                                                        printf "wpaging\t"
> +                                                        else
> +
> printf "%d\t\t", $arg0->state
> +                                                        end
> +                                                end
> +                                        end
> +                                end
> +                        end
> +                end
> +end
> +document __show_state
> +internel macro, don't call it by hand
> +end
> +
> +
> +define psusr
> +        printf "address\t\tstate\t\tuid\tpid\tppid\tcomm\n"
> +        set $init_t = &init_task
> +        set $tasks_off=((size_t)&((struct task_struct *)0)->tasks)
> +        set $next_t=(((char *)($init_t->tasks).next) - $tasks_off)
> +
> +        while ($next_t != $init_t)
> +               set $next_t=(struct task_struct *)$next_t
> +               printf "0x%08X\t", $next_t
> +               __show_state $next_t
> +               printf "%d\t%d\t%d\t%s\n", \
> +                       $next_t->uid, $next_t->pid, \
> +                       $next_t->parent->pid, $next_t->comm
> +               set  $next_t=(char *)($next_t->tasks.next) - $tasks_off
> +        end
> +
> +        printf "address\t\tstate\t\tuid\tpid\tppid\tcomm\n"
> +        printf "----end----\n"
> +
> +end
> +document psusr
> +print information for all tasks, but not including thread members.
> +This command looks like "ps -aux" in userspace.
> +end
> +
> +
> +define pskern
> +        printf "address\t\tstate\t\tuid\tpid\tppid\tcomm\n"
> +        set $init_t = &init_task
> +        printf "0x%08X\t", $init_t
> +        __show_state $init_t
> +        printf "%d\t%d\t%d\t%s\n", \
> +                $init_t->uid, $init_t->pid, \
> +                $init_t->parent->pid, $init_t->comm
> +
> +       set $tasks_off=((size_t)&((struct task_struct *)0)->tasks)
> +       set $thread_off=((size_t)&((struct task_struct *)0)->thread_group.next)
> +       set $next_t=(((char *)($init_t->tasks).next) - $tasks_off)
> +
> +       while ($next_t != $init_t)
> +               set $next_t=(struct task_struct *)$next_t
> +
> +               printf "0x%08X\t", $next_t
> +               __show_state $next_t
> +               printf "%d\t%d\t%d\t%s\n", \
> +                       $next_t->uid, $next_t->pid, \
> +                       $next_t->parent->pid, $next_t->comm
> +
> +               set $next_th=(((char *)$next_t->thread_group.next) - $thread_off)
> +
> +               while ($next_th != $next_t)
> +                       set $next_th=(struct task_struct *)$next_th
> +
> +                       printf "0x%08X\t", $next_th
> +                       __show_state $next_th
> +                       printf "%d\t%d\t%d\t%s\n", \
> +                               $next_th->uid, $next_th->pid, \
> +                               $next_th->parent->pid, $next_th->comm
> +
> +                       set $next_th=(((char *)$next_th->thread_group.next) - $thread_off)
> +               end
> +
> +               set  $next_t=(char *)($next_t->tasks.next) - $tasks_off
> +        end
> +
> +        printf "address\t\tstate\t\tuid\tpid\tppid\tcomm\n"
> +        printf "----end----\n"
> +
> +end
> +document pskern
> +print infor for all tasks viewed in kernel, including all thread members
> +and swapper(PID==0).
> +end
> +
> +
> +define __prinfo_nobp
> +        printf "\npid %d; addr:0x%08x; comm %s:\n", \
> +                $arg0.pid, $arg0, $arg0.comm
> +        printf "=====================================\n"
> +        set var $stackp = $arg0.thread.sp
> +        set var $stack_top = ($stackp & ~4095) + 4096
> +
> +        while ($stackp < $stack_top)
> +                if (*($stackp) > _stext && *($stackp) < _sinittext)
> +                        info symbol *($stackp)
> +                end
> +        set $stackp += 4
> +        end
> +end
> +document __prinfo_nobp
> +internal macro, don't call it by hand.
> +end
> +
> +
>  define bttnobp
>        set $tasks_off=((size_t)&((struct task_struct *)0)->tasks)
> -       set $pid_off=((size_t)&((struct task_struct *)0)->pids[1].pid_list.next)
> +       set $thread_off=((size_t)&((struct task_struct *)0)->thread_group.next)
>        set $init_t=&init_task
>        set $next_t=(((char *)($init_t->tasks).next) - $tasks_off)
> +
>        while ($next_t != $init_t)
>                set $next_t=(struct task_struct *)$next_t
> -               printf "\npid %d; comm %s:\n", $next_t.pid, $next_t.comm
> -               printf "===================\n"
> -               set var $stackp = $next_t.thread.esp
> -               set var $stack_top = ($stackp & ~4095) + 4096
> -
> -               while ($stackp < $stack_top)
> -                       if (*($stackp) > _stext && *($stackp) < _sinittext)
> -                               info symbol *($stackp)
> -                       end
> -                       set $stackp += 4
> -               end
> -               set $next_th=(((char *)$next_t->pids[1].pid_list.next) - $pid_off)
> +               __prinfo_nobp $next_t
> +               set $next_th=(((char *)$next_t->thread_group.next) - $thread_off)
>                while ($next_th != $next_t)
>                        set $next_th=(struct task_struct *)$next_th
> -                       printf "\npid %d; comm %s:\n", $next_t.pid, $next_t.comm
> -                       printf "===================\n"
> -                       set var $stackp = $next_t.thread.esp
> -                       set var $stack_top = ($stackp & ~4095) + 4096
> -
> -                       while ($stackp < $stack_top)
> -                               if (*($stackp) > _stext && *($stackp) < _sinittext)
> -                                       info symbol *($stackp)
> -                               end
> -                               set $stackp += 4
> -                       end
> -                       set $next_th=(((char *)$next_th->pids[1].pid_list.next) - $pid_off)
> +                       __prinfo_nobp $next_th
> +                       set $next_th=(((char *)$next_th->thread_group.next) - $thread_off)
>                end
>                set $next_t=(char *)($next_t->tasks.next) - $tasks_off
>        end
> @@ -54,42 +161,41 @@ document bttnobp
>        dump all thread stack traces on a kernel compiled with !CONFIG_FRAME_POINTER
>  end
>
> +
> +define __prinfo
> +        printf "\npid %d; addr:0x%08x; comm %s:\n", \
> +                $arg0.pid, $arg0, $arg0.comm
> +        printf "=====================================\n"
> +        set var $stackp = $arg0.thread.sp
> +        set var $stack_top = ($stackp & ~4095) + 4096
> +        set var $stack_bot = ($stackp & ~4095)
> +
> +        set $stackp = *($stackp)
> +        while (($stackp < $stack_top) && ($stackp > $stack_bot))
> +                set var $addr = *($stackp + 4)
> +                info symbol $addr
> +                set $stackp = *($stackp)
> +        end
> +end
> +document __prinfo
> +internal macro, don't call it by hand.
> +end
> +
> +
>  define btt
>        set $tasks_off=((size_t)&((struct task_struct *)0)->tasks)
> -       set $pid_off=((size_t)&((struct task_struct *)0)->pids[1].pid_list.next)
> +       set $thread_off=((size_t)&((struct task_struct *)0)->thread_group.next)
>        set $init_t=&init_task
>        set $next_t=(((char *)($init_t->tasks).next) - $tasks_off)
> +
>        while ($next_t != $init_t)
>                set $next_t=(struct task_struct *)$next_t
> -               printf "\npid %d; comm %s:\n", $next_t.pid, $next_t.comm
> -               printf "===================\n"
> -               set var $stackp = $next_t.thread.esp
> -               set var $stack_top = ($stackp & ~4095) + 4096
> -               set var $stack_bot = ($stackp & ~4095)
> -
> -               set $stackp = *($stackp)
> -               while (($stackp < $stack_top) && ($stackp > $stack_bot))
> -                       set var $addr = *($stackp + 4)
> -                       info symbol $addr
> -                       set $stackp = *($stackp)
> -               end
> -
> -               set $next_th=(((char *)$next_t->pids[1].pid_list.next) - $pid_off)
> +               __prinfo $next_t
> +               set $next_th=(((char *)$next_t->thread_group.next) - $thread_off)
>                while ($next_th != $next_t)
>                        set $next_th=(struct task_struct *)$next_th
> -                       printf "\npid %d; comm %s:\n", $next_t.pid, $next_t.comm
> -                       printf "===================\n"
> -                       set var $stackp = $next_t.thread.esp
> -                       set var $stack_top = ($stackp & ~4095) + 4096
> -                       set var $stack_bot = ($stackp & ~4095)
> -
> -                       set $stackp = *($stackp)
> -                       while (($stackp < $stack_top) && ($stackp > $stack_bot))
> -                               set var $addr = *($stackp + 4)
> -                               info symbol $addr
> -                               set $stackp = *($stackp)
> -                       end
> -                       set $next_th=(((char *)$next_th->pids[1].pid_list.next) - $pid_off)
> +                       __prinfo $next_th
> +                       set $next_th=(((char *)$next_th->thread_group.next) - $thread_off)
>                end
>                set $next_t=(char *)($next_t->tasks.next) - $tasks_off
>        end
> @@ -101,7 +207,7 @@ end
>  define btpid
>        set var $pid = $arg0
>        set $tasks_off=((size_t)&((struct task_struct *)0)->tasks)
> -       set $pid_off=((size_t)&((struct task_struct *)0)->pids[1].pid_list.next)
> +       set $thread_off=((size_t)&((struct task_struct *)0)->thread_group)
>        set $init_t=&init_task
>        set $next_t=(((char *)($init_t->tasks).next) - $tasks_off)
>        set var $pid_task = 0
> @@ -113,29 +219,19 @@ define btpid
>                        set $pid_task = $next_t
>                end
>
> -               set $next_th=(((char *)$next_t->pids[1].pid_list.next) - $pid_off)
> +               set $next_th=(((char *)$next_t->thread_group.next) - $thread_off)
>                while ($next_th != $next_t)
>                        set $next_th=(struct task_struct *)$next_th
>                        if ($next_th.pid == $pid)
>                                set $pid_task = $next_th
>                        end
> -                       set $next_th=(((char *)$next_th->pids[1].pid_list.next) - $pid_off)
> +                       set $next_th=(((char *)$next_th->thread_group.next) - $thread_off)
>                end
>                set $next_t=(char *)($next_t->tasks.next) - $tasks_off
>        end
>
> -       printf "\npid %d; comm %s:\n", $pid_task.pid, $pid_task.comm
> -       printf "===================\n"
> -       set var $stackp = $pid_task.thread.esp
> -       set var $stack_top = ($stackp & ~4095) + 4096
> -       set var $stack_bot = ($stackp & ~4095)
> -
> -       set $stackp = *($stackp)
> -       while (($stackp < $stack_top) && ($stackp > $stack_bot))
> -               set var $addr = *($stackp + 4)
> -               info symbol $addr
> -               set $stackp = *($stackp)
> -       end
> +       __prinfo $pid_task
> +
>  end
>  document btpid
>        backtrace of pid
> @@ -145,7 +241,7 @@ end
>  define trapinfo
>        set var $pid = $arg0
>        set $tasks_off=((size_t)&((struct task_struct *)0)->tasks)
> -       set $pid_off=((size_t)&((struct task_struct *)0)->pids[1].pid_list.next)
> +       set $thread_off=((size_t)&((struct task_struct *)0)->thread_group.next)
>        set $init_t=&init_task
>        set $next_t=(((char *)($init_t->tasks).next) - $tasks_off)
>        set var $pid_task = 0
> @@ -157,13 +253,13 @@ define trapinfo
>                        set $pid_task = $next_t
>                end
>
> -               set $next_th=(((char *)$next_t->pids[1].pid_list.next) - $pid_off)
> +               set $next_th=(((char *)$next_t->thread_group.next) - $thread_off)
>                while ($next_th != $next_t)
>                        set $next_th=(struct task_struct *)$next_th
>                        if ($next_th.pid == $pid)
>                                set $pid_task = $next_th
>                        end
> -                       set $next_th=(((char *)$next_th->pids[1].pid_list.next) - $pid_off)
> +                       set $next_th=(((char *)$next_th->thread_group.next) - $thread_off)
>                end
>                set $next_t=(char *)($next_t->tasks.next) - $tasks_off
>        end
>

^ permalink raw reply	[flat|nested] 2+ messages in thread

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2008-10-28 15:39 [PATCH RESEND] kdump: update Documentation gdbmacros.txt Qinghuang Feng
2008-10-28 17:25 ` Qinghuang Feng

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