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: linux-alpha@vger.kernel.org
Signed-off-by: Matt Turner <mattst88@gmail.com>

diff --git a/arch/alpha/kernel/osf_sys.c b/arch/alpha/kernel/osf_sys.c
index 16bc1f5df3e22dd24c1fbba76df4afdeece2d33f..547e8b84b2f794ab546aca3b1927c80bdc1104bf 100644 (file)
--- a/arch/alpha/kernel/osf_sys.c
+++ b/arch/alpha/kernel/osf_sys.c
@@ -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;
 }
 

diff --git a/arch/alpha/kernel/traps.c b/arch/alpha/kernel/traps.c
index b14f015008ada5e90d580b0589d4ff5144a1602e..0414e021a91c3ba8756674dea873f0dabd6c0abd 100644 (file)
--- a/arch/alpha/kernel/traps.c
+++ b/arch/alpha/kernel/traps.c
@@ -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 @@ got_exception:
         * 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));