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alpha: kill big kernel lock 

All uses of the BKL on alpha are totally bogus, nothing
is really protected by this. Remove the remaining users
so we don't have to mark alpha as 'depends on BKL'.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Matt Turner <mattst88@gmail.com>
Cc: linux-alpha@vger.kernel.org
This commit is contained in:
Arnd Bergmann 2010-09-11 18:10:10 +02:00
parent 6117d2130c
commit 80eb4a6f89
2 changed files with 0 additions and 8 deletions
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5
arch/alpha/kernel/osf_sys.c
View File

@ -15,7 +15,6 @@
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/smp.h>
#include <linux/smp_lock.h>
#include <linux/stddef.h>
#include <linux/syscalls.h>
#include <linux/unistd.h>
@ -69,7 +68,6 @@ SYSCALL_DEFINE4(osf_set_program_attributes, unsigned long, text_start,
{
struct mm_struct *mm;
lock_kernel();
mm = current->mm;
mm->end_code = bss_start + bss_len;
mm->start_brk = bss_start + bss_len;
@ -78,7 +76,6 @@ SYSCALL_DEFINE4(osf_set_program_attributes, unsigned long, text_start,
printk("set_program_attributes(%lx %lx %lx %lx)\n",
text_start, text_len, bss_start, bss_len);
#endif
unlock_kernel();
return 0;
}
@ -517,7 +514,6 @@ SYSCALL_DEFINE2(osf_proplist_syscall, enum pl_code, code,
long error;
int __user *min_buf_size_ptr;
lock_kernel();
switch (code) {
case PL_SET:
if (get_user(error, &args->set.nbytes))
@ -547,7 +543,6 @@ SYSCALL_DEFINE2(osf_proplist_syscall, enum pl_code, code,
error = -EOPNOTSUPP;
break;
};
unlock_kernel();
return error;
}

3
arch/alpha/kernel/traps.c
View File

@ -13,7 +13,6 @@
#include <linux/sched.h>
#include <linux/tty.h>
#include <linux/delay.h>
#include <linux/smp_lock.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/kallsyms.h>
@ -623,7 +622,6 @@ do_entUna(void * va, unsigned long opcode, unsigned long reg,
return;
}
lock_kernel();
printk("Bad unaligned kernel access at %016lx: %p %lx %lu\n",
pc, va, opcode, reg);
do_exit(SIGSEGV);
@ -646,7 +644,6 @@ do_entUna(void * va, unsigned long opcode, unsigned long reg,
* Yikes! No one to forward the exception to.
* Since the registers are in a weird format, dump them ourselves.
*/
lock_kernel();
printk("%s(%d): unhandled unaligned exception\n",
current->comm, task_pid_nr(current));