diff options
Diffstat (limited to 'arch/s390')
| -rw-r--r-- | arch/s390/kernel/compat_wrapper.S | 1 | ||||
| -rw-r--r-- | arch/s390/lib/spinlock.c | 15 | ||||
| -rw-r--r-- | arch/s390/lib/uaccess.S | 6 | ||||
| -rw-r--r-- | arch/s390/lib/uaccess64.S | 6 | ||||
| -rw-r--r-- | arch/s390/mm/init.c | 4 |
5 files changed, 22 insertions, 10 deletions
diff --git a/arch/s390/kernel/compat_wrapper.S b/arch/s390/kernel/compat_wrapper.S index 615964cca15f..50e80138e7ad 100644 --- a/arch/s390/kernel/compat_wrapper.S +++ b/arch/s390/kernel/compat_wrapper.S @@ -1552,6 +1552,7 @@ sys_linkat_wrapper: llgtr %r3,%r3 # const char * lgfr %r4,%r4 # int llgtr %r5,%r5 # const char * + lgfr %r6,%r6 # int jg sys_linkat .globl sys_symlinkat_wrapper diff --git a/arch/s390/lib/spinlock.c b/arch/s390/lib/spinlock.c index 60f80a4eed4e..b9b7958a226a 100644 --- a/arch/s390/lib/spinlock.c +++ b/arch/s390/lib/spinlock.c @@ -2,8 +2,7 @@ * arch/s390/lib/spinlock.c * Out of line spinlock code. * - * S390 version - * Copyright (C) 2004 IBM Deutschland Entwicklung GmbH, IBM Corporation + * Copyright (C) IBM Corp. 2004, 2006 * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com) */ @@ -44,6 +43,8 @@ _raw_spin_lock_wait(raw_spinlock_t *lp, unsigned int pc) _diag44(); count = spin_retry; } + if (__raw_spin_is_locked(lp)) + continue; if (_raw_compare_and_swap(&lp->lock, 0, pc) == 0) return; } @@ -56,6 +57,8 @@ _raw_spin_trylock_retry(raw_spinlock_t *lp, unsigned int pc) int count = spin_retry; while (count-- > 0) { + if (__raw_spin_is_locked(lp)) + continue; if (_raw_compare_and_swap(&lp->lock, 0, pc) == 0) return 1; } @@ -74,6 +77,8 @@ _raw_read_lock_wait(raw_rwlock_t *rw) _diag44(); count = spin_retry; } + if (!__raw_read_can_lock(rw)) + continue; old = rw->lock & 0x7fffffffU; if (_raw_compare_and_swap(&rw->lock, old, old + 1) == old) return; @@ -88,6 +93,8 @@ _raw_read_trylock_retry(raw_rwlock_t *rw) int count = spin_retry; while (count-- > 0) { + if (!__raw_read_can_lock(rw)) + continue; old = rw->lock & 0x7fffffffU; if (_raw_compare_and_swap(&rw->lock, old, old + 1) == old) return 1; @@ -106,6 +113,8 @@ _raw_write_lock_wait(raw_rwlock_t *rw) _diag44(); count = spin_retry; } + if (!__raw_write_can_lock(rw)) + continue; if (_raw_compare_and_swap(&rw->lock, 0, 0x80000000) == 0) return; } @@ -118,6 +127,8 @@ _raw_write_trylock_retry(raw_rwlock_t *rw) int count = spin_retry; while (count-- > 0) { + if (!__raw_write_can_lock(rw)) + continue; if (_raw_compare_and_swap(&rw->lock, 0, 0x80000000) == 0) return 1; } diff --git a/arch/s390/lib/uaccess.S b/arch/s390/lib/uaccess.S index 88fc94fe6488..5d59e2625048 100644 --- a/arch/s390/lib/uaccess.S +++ b/arch/s390/lib/uaccess.S @@ -198,12 +198,12 @@ __strnlen_user_asm: 0: srst %r2,%r1 jo 0b sacf 0 - jh 1f # \0 found in string ? ahi %r2,1 # strnlen_user result includes the \0 -1: slr %r2,%r3 + # or return count+1 if \0 not found + slr %r2,%r3 br %r14 2: sacf 0 - lhi %r2,-EFAULT + slr %r2,%r2 # return 0 on exception br %r14 .section __ex_table,"a" .long 0b,2b diff --git a/arch/s390/lib/uaccess64.S b/arch/s390/lib/uaccess64.S index 50219786fc7a..19b41a33c230 100644 --- a/arch/s390/lib/uaccess64.S +++ b/arch/s390/lib/uaccess64.S @@ -194,12 +194,12 @@ __strnlen_user_asm: 0: srst %r2,%r1 jo 0b sacf 0 - jh 1f # \0 found in string ? aghi %r2,1 # strnlen_user result includes the \0 -1: slgr %r2,%r3 + # or return count+1 if \0 not found + slgr %r2,%r3 br %r14 2: sacf 0 - lghi %r2,-EFAULT + slgr %r2,%r2 # return 0 on exception br %r14 .section __ex_table,"a" .quad 0b,2b diff --git a/arch/s390/mm/init.c b/arch/s390/mm/init.c index df953383724d..a055894f3bd8 100644 --- a/arch/s390/mm/init.c +++ b/arch/s390/mm/init.c @@ -292,7 +292,7 @@ void free_initmem(void) addr = (unsigned long)(&__init_begin); for (; addr < (unsigned long)(&__init_end); addr += PAGE_SIZE) { ClearPageReserved(virt_to_page(addr)); - set_page_count(virt_to_page(addr), 1); + init_page_count(virt_to_page(addr)); free_page(addr); totalram_pages++; } @@ -307,7 +307,7 @@ void free_initrd_mem(unsigned long start, unsigned long end) printk ("Freeing initrd memory: %ldk freed\n", (end - start) >> 10); for (; start < end; start += PAGE_SIZE) { ClearPageReserved(virt_to_page(start)); - set_page_count(virt_to_page(start), 1); + init_page_count(virt_to_page(start)); free_page(start); totalram_pages++; } |