Messages in this thread Patch in this message | | | Date | Tue, 31 May 2005 01:48:28 +0200 (CEST) | From | Roman Zippel <> | Subject | more thread_info patches |
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Hi,
On Thu, 21 Apr 2005, Al Viro wrote:
> thread_info, part 1:
Here are some possible followup patches. Since it's already some time ago here are the original posts for everyone else: http://marc.theaimsgroup.com/?l=linux-kernel&m=111410539627881&w=2
This introduces an additional stack variable in task_struct. It's basically redundant with the thread_info pointer, but in the long term I'd like to get of the latter (with the following patches).
bye, Roman
---
include/linux/init_task.h | 1 + include/linux/sched.h | 1 + kernel/fork.c | 1 + 3 files changed, 3 insertions(+)
Index: linux-2.6-mm/include/linux/sched.h =================================================================== --- linux-2.6-mm.orig/include/linux/sched.h 2005-05-31 01:19:01.636591190 +0200 +++ linux-2.6-mm/include/linux/sched.h 2005-05-31 01:19:05.913856451 +0200 @@ -617,6 +617,7 @@ struct mempolicy; struct task_struct { volatile long state; /* -1 unrunnable, 0 runnable, >0 stopped */ struct thread_info *thread_info; + void *stack; atomic_t usage; unsigned long flags; /* per process flags, defined below */ unsigned long ptrace; Index: linux-2.6-mm/include/linux/init_task.h =================================================================== --- linux-2.6-mm.orig/include/linux/init_task.h 2005-05-31 01:19:01.636591190 +0200 +++ linux-2.6-mm/include/linux/init_task.h 2005-05-31 01:19:05.913856451 +0200 @@ -71,6 +71,7 @@ extern struct group_info init_groups; { \ .state = 0, \ .thread_info = &init_thread_info, \ + .stack = &init_stack, \ .usage = ATOMIC_INIT(2), \ .flags = 0, \ .lock_depth = -1, \ Index: linux-2.6-mm/kernel/fork.c =================================================================== --- linux-2.6-mm.orig/kernel/fork.c 2005-05-31 01:19:01.636591190 +0200 +++ linux-2.6-mm/kernel/fork.c 2005-05-31 01:19:29.954726757 +0200 @@ -173,6 +173,7 @@ static struct task_struct *dup_task_stru *tsk = *orig; setup_thread_info(tsk, ti); tsk->thread_info = ti; + tsk->stack = ti; ti->task = tsk; /* One for us, one for whoever does the "release_task()" (usually parent) */ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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