[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <20070502164152.GA2521@elte.hu>
Date: Wed, 2 May 2007 18:41:52 +0200
From: Ingo Molnar <mingo@...e.hu>
To: Vegard Nossum <vegard@...tkore.net>
Cc: linux-kernel@...r.kernel.org
Subject: Re: [patch] CFS scheduler, -v8
* Vegard Nossum <vegard@...tkore.net> wrote:
> The sys_sched_yield_to() is not callable from userspace on i386
> because it is not part of the syscall table
> (arch/i386/kernel/syscall_table.S). This causes sysenter_entry
> (arch/i386/kernel/entry.S) to use the wrong count for nr_syscalls (320
> instead of 321) and return with -ENOSYS.
oops, indeed - the patch below should fix this. (x86 should really adopt
the nice x86_64 technique of building the syscall table out of the
unistd.h enumeration definitions.)
Ingo
Index: linux/arch/i386/kernel/syscall_table.S
===================================================================
--- linux.orig/arch/i386/kernel/syscall_table.S
+++ linux/arch/i386/kernel/syscall_table.S
@@ -319,3 +319,4 @@ ENTRY(sys_call_table)
.long sys_move_pages
.long sys_getcpu
.long sys_epoll_pwait
+ .long sys_sched_yield_to /* 320 */
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists