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authorLinus Torvalds <torvalds@linux-foundation.org>2013-09-05 15:28:17 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2013-09-05 15:28:17 -0700
commitb14662cae0f765355d43357180f4c34916610269 (patch)
treee7e7132783fb76186829fc38f2639ae41bc28330
parentcc998ff8811530be521f6b316f37ab7676a07938 (diff)
parentdc76f9ca71ea597dbb0e9c77d1072ddca651f4f3 (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc
Pull sparc changes from David Miller: "Several bug fixes (from Kirill Tkhai, Geery Uytterhoeven, and Alexey Dobriyan) and some support for Fujitsu sparc64x chips (from Allen Pais)" * git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc: sparc64: Export flush_ptrace_access() (needed by lustre) sparc: fix PCI device proc file mmap(2) sparc64: Remove RWSEM export leftovers sparc64: Fix off by one in trampoline TLB mapping installation loop. sparc64: Fix ITLB handler of null page esp_scsi: Fix tag state corruption when autosensing. sparc64: Fix not SRA'ed %o5 in 32-bit traced syscall sparc64: cleanup: Rename ret_from_syscall to ret_from_fork sparc32: Fix exit flag passed from traced sys_sigreturn sparc64: Fix wrong syscall return value passed to trace_sys_exit() support sparc64x chip type in cpumap.c cpu hw caps support for sparc64x
-rw-r--r--arch/sparc/include/asm/switch_to_64.h4
-rw-r--r--arch/sparc/kernel/cpumap.c1
-rw-r--r--arch/sparc/kernel/entry.S2
-rw-r--r--arch/sparc/kernel/kgdb_64.c4
-rw-r--r--arch/sparc/kernel/ktlb.S3
-rw-r--r--arch/sparc/kernel/ptrace_64.c4
-rw-r--r--arch/sparc/kernel/setup_64.c12
-rw-r--r--arch/sparc/kernel/syscalls.S12
-rw-r--r--arch/sparc/kernel/trampoline_64.S2
-rw-r--r--arch/sparc/lib/ksyms.c9
-rw-r--r--drivers/scsi/esp_scsi.c14
-rw-r--r--drivers/scsi/esp_scsi.h1
-rw-r--r--fs/proc/inode.c16
13 files changed, 49 insertions, 35 deletions
diff --git a/arch/sparc/include/asm/switch_to_64.h b/arch/sparc/include/asm/switch_to_64.h
index c7de3323819c..8d284801f232 100644
--- a/arch/sparc/include/asm/switch_to_64.h
+++ b/arch/sparc/include/asm/switch_to_64.h
@@ -48,8 +48,8 @@ do { save_and_clear_fpu(); \
"wrpr %%g0, 14, %%pil\n\t" \
"brz,pt %%o7, switch_to_pc\n\t" \
" mov %%g7, %0\n\t" \
- "sethi %%hi(ret_from_syscall), %%g1\n\t" \
- "jmpl %%g1 + %%lo(ret_from_syscall), %%g0\n\t" \
+ "sethi %%hi(ret_from_fork), %%g1\n\t" \
+ "jmpl %%g1 + %%lo(ret_from_fork), %%g0\n\t" \
" nop\n\t" \
".globl switch_to_pc\n\t" \
"switch_to_pc:\n\t" \
diff --git a/arch/sparc/kernel/cpumap.c b/arch/sparc/kernel/cpumap.c
index e4de74c2c9b0..cb5d272d658a 100644
--- a/arch/sparc/kernel/cpumap.c
+++ b/arch/sparc/kernel/cpumap.c
@@ -327,6 +327,7 @@ static int iterate_cpu(struct cpuinfo_tree *t, unsigned int root_index)
case SUN4V_CHIP_NIAGARA3:
case SUN4V_CHIP_NIAGARA4:
case SUN4V_CHIP_NIAGARA5:
+ case SUN4V_CHIP_SPARC64X:
rover_inc_table = niagara_iterate_method;
break;
default:
diff --git a/arch/sparc/kernel/entry.S b/arch/sparc/kernel/entry.S
index e2a030045089..33c02b15f478 100644
--- a/arch/sparc/kernel/entry.S
+++ b/arch/sparc/kernel/entry.S
@@ -839,7 +839,7 @@ sys_sigreturn:
nop
call syscall_trace
- nop
+ mov 1, %o1
1:
/* We don't want to muck with user registers like a
diff --git a/arch/sparc/kernel/kgdb_64.c b/arch/sparc/kernel/kgdb_64.c
index c8759550799f..53c0a82e6030 100644
--- a/arch/sparc/kernel/kgdb_64.c
+++ b/arch/sparc/kernel/kgdb_64.c
@@ -42,7 +42,7 @@ void sleeping_thread_to_gdb_regs(unsigned long *gdb_regs, struct task_struct *p)
{
struct thread_info *t = task_thread_info(p);
extern unsigned int switch_to_pc;
- extern unsigned int ret_from_syscall;
+ extern unsigned int ret_from_fork;
struct reg_window *win;
unsigned long pc, cwp;
int i;
@@ -66,7 +66,7 @@ void sleeping_thread_to_gdb_regs(unsigned long *gdb_regs, struct task_struct *p)
gdb_regs[i] = 0;
if (t->new_child)
- pc = (unsigned long) &ret_from_syscall;
+ pc = (unsigned long) &ret_from_fork;
else
pc = (unsigned long) &switch_to_pc;
diff --git a/arch/sparc/kernel/ktlb.S b/arch/sparc/kernel/ktlb.S
index 0746e5e32b37..fde5a419cf27 100644
--- a/arch/sparc/kernel/ktlb.S
+++ b/arch/sparc/kernel/ktlb.S
@@ -25,11 +25,10 @@ kvmap_itlb:
*/
kvmap_itlb_4v:
-kvmap_itlb_nonlinear:
/* Catch kernel NULL pointer calls. */
sethi %hi(PAGE_SIZE), %g5
cmp %g4, %g5
- bleu,pn %xcc, kvmap_dtlb_longpath
+ blu,pn %xcc, kvmap_itlb_longpath
nop
KERN_TSB_LOOKUP_TL1(%g4, %g6, %g5, %g1, %g2, %g3, kvmap_itlb_load)
diff --git a/arch/sparc/kernel/ptrace_64.c b/arch/sparc/kernel/ptrace_64.c
index 7ff45e4ba681..773c1f2983ce 100644
--- a/arch/sparc/kernel/ptrace_64.c
+++ b/arch/sparc/kernel/ptrace_64.c
@@ -14,6 +14,7 @@
#include <linux/sched.h>
#include <linux/mm.h>
#include <linux/errno.h>
+#include <linux/export.h>
#include <linux/ptrace.h>
#include <linux/user.h>
#include <linux/smp.h>
@@ -116,6 +117,7 @@ void flush_ptrace_access(struct vm_area_struct *vma, struct page *page,
preempt_enable();
}
+EXPORT_SYMBOL_GPL(flush_ptrace_access);
static int get_from_target(struct task_struct *target, unsigned long uaddr,
void *kbuf, int len)
@@ -1087,7 +1089,7 @@ asmlinkage void syscall_trace_leave(struct pt_regs *regs)
audit_syscall_exit(regs);
if (unlikely(test_thread_flag(TIF_SYSCALL_TRACEPOINT)))
- trace_sys_exit(regs, regs->u_regs[UREG_G1]);
+ trace_sys_exit(regs, regs->u_regs[UREG_I0]);
if (test_thread_flag(TIF_SYSCALL_TRACE))
tracehook_report_syscall_exit(regs, 0);
diff --git a/arch/sparc/kernel/setup_64.c b/arch/sparc/kernel/setup_64.c
index 13785547e435..3fdb455e3318 100644
--- a/arch/sparc/kernel/setup_64.c
+++ b/arch/sparc/kernel/setup_64.c
@@ -499,12 +499,14 @@ static void __init init_sparc64_elf_hwcap(void)
sun4v_chip_type == SUN4V_CHIP_NIAGARA2 ||
sun4v_chip_type == SUN4V_CHIP_NIAGARA3 ||
sun4v_chip_type == SUN4V_CHIP_NIAGARA4 ||
- sun4v_chip_type == SUN4V_CHIP_NIAGARA5)
+ sun4v_chip_type == SUN4V_CHIP_NIAGARA5 ||
+ sun4v_chip_type == SUN4V_CHIP_SPARC64X)
cap |= HWCAP_SPARC_BLKINIT;
if (sun4v_chip_type == SUN4V_CHIP_NIAGARA2 ||
sun4v_chip_type == SUN4V_CHIP_NIAGARA3 ||
sun4v_chip_type == SUN4V_CHIP_NIAGARA4 ||
- sun4v_chip_type == SUN4V_CHIP_NIAGARA5)
+ sun4v_chip_type == SUN4V_CHIP_NIAGARA5 ||
+ sun4v_chip_type == SUN4V_CHIP_SPARC64X)
cap |= HWCAP_SPARC_N2;
}
@@ -530,13 +532,15 @@ static void __init init_sparc64_elf_hwcap(void)
if (sun4v_chip_type == SUN4V_CHIP_NIAGARA2 ||
sun4v_chip_type == SUN4V_CHIP_NIAGARA3 ||
sun4v_chip_type == SUN4V_CHIP_NIAGARA4 ||
- sun4v_chip_type == SUN4V_CHIP_NIAGARA5)
+ sun4v_chip_type == SUN4V_CHIP_NIAGARA5 ||
+ sun4v_chip_type == SUN4V_CHIP_SPARC64X)
cap |= (AV_SPARC_VIS | AV_SPARC_VIS2 |
AV_SPARC_ASI_BLK_INIT |
AV_SPARC_POPC);
if (sun4v_chip_type == SUN4V_CHIP_NIAGARA3 ||
sun4v_chip_type == SUN4V_CHIP_NIAGARA4 ||
- sun4v_chip_type == SUN4V_CHIP_NIAGARA5)
+ sun4v_chip_type == SUN4V_CHIP_NIAGARA5 ||
+ sun4v_chip_type == SUN4V_CHIP_SPARC64X)
cap |= (AV_SPARC_VIS3 | AV_SPARC_HPC |
AV_SPARC_FMAF);
}
diff --git a/arch/sparc/kernel/syscalls.S b/arch/sparc/kernel/syscalls.S
index 22a1098961f5..d950197a17e1 100644
--- a/arch/sparc/kernel/syscalls.S
+++ b/arch/sparc/kernel/syscalls.S
@@ -98,8 +98,8 @@ sys_clone:
ba,pt %xcc, sparc_do_fork
add %sp, PTREGS_OFF, %o2
- .globl ret_from_syscall
-ret_from_syscall:
+ .globl ret_from_fork
+ret_from_fork:
/* Clear current_thread_info()->new_child. */
stb %g0, [%g6 + TI_NEW_CHILD]
call schedule_tail
@@ -152,7 +152,7 @@ linux_syscall_trace32:
srl %i4, 0, %o4
srl %i1, 0, %o1
srl %i2, 0, %o2
- ba,pt %xcc, 2f
+ ba,pt %xcc, 5f
srl %i3, 0, %o3
linux_syscall_trace:
@@ -182,13 +182,13 @@ linux_sparc_syscall32:
srl %i1, 0, %o1 ! IEU0 Group
ldx [%g6 + TI_FLAGS], %l0 ! Load
- srl %i5, 0, %o5 ! IEU1
+ srl %i3, 0, %o3 ! IEU0
srl %i2, 0, %o2 ! IEU0 Group
andcc %l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT|_TIF_SYSCALL_TRACEPOINT), %g0
bne,pn %icc, linux_syscall_trace32 ! CTI
mov %i0, %l5 ! IEU1
- call %l7 ! CTI Group brk forced
- srl %i3, 0, %o3 ! IEU0
+5: call %l7 ! CTI Group brk forced
+ srl %i5, 0, %o5 ! IEU1
ba,a,pt %xcc, 3f
/* Linux native system calls enter here... */
diff --git a/arch/sparc/kernel/trampoline_64.S b/arch/sparc/kernel/trampoline_64.S
index e0b1e13a0736..ad4bde3bb61e 100644
--- a/arch/sparc/kernel/trampoline_64.S
+++ b/arch/sparc/kernel/trampoline_64.S
@@ -129,7 +129,6 @@ startup_continue:
clr %l5
sethi %hi(num_kernel_image_mappings), %l6
lduw [%l6 + %lo(num_kernel_image_mappings)], %l6
- add %l6, 1, %l6
mov 15, %l7
BRANCH_IF_ANY_CHEETAH(g1,g5,2f)
@@ -222,7 +221,6 @@ niagara_lock_tlb:
clr %l5
sethi %hi(num_kernel_image_mappings), %l6
lduw [%l6 + %lo(num_kernel_image_mappings)], %l6
- add %l6, 1, %l6
1:
mov HV_FAST_MMU_MAP_PERM_ADDR, %o5
diff --git a/arch/sparc/lib/ksyms.c b/arch/sparc/lib/ksyms.c
index 0c4e35e522fa..323335b9cd2b 100644
--- a/arch/sparc/lib/ksyms.c
+++ b/arch/sparc/lib/ksyms.c
@@ -98,15 +98,6 @@ EXPORT_SYMBOL(___copy_from_user);
EXPORT_SYMBOL(___copy_in_user);
EXPORT_SYMBOL(__clear_user);
-/* RW semaphores */
-EXPORT_SYMBOL(__down_read);
-EXPORT_SYMBOL(__down_read_trylock);
-EXPORT_SYMBOL(__down_write);
-EXPORT_SYMBOL(__down_write_trylock);
-EXPORT_SYMBOL(__up_read);
-EXPORT_SYMBOL(__up_write);
-EXPORT_SYMBOL(__downgrade_write);
-
/* Atomic counter implementation. */
EXPORT_SYMBOL(atomic_add);
EXPORT_SYMBOL(atomic_add_ret);
diff --git a/drivers/scsi/esp_scsi.c b/drivers/scsi/esp_scsi.c
index 34552bf1c023..55548dc5cec3 100644
--- a/drivers/scsi/esp_scsi.c
+++ b/drivers/scsi/esp_scsi.c
@@ -530,7 +530,7 @@ static int esp_need_to_nego_sync(struct esp_target_data *tp)
static int esp_alloc_lun_tag(struct esp_cmd_entry *ent,
struct esp_lun_data *lp)
{
- if (!ent->tag[0]) {
+ if (!ent->orig_tag[0]) {
/* Non-tagged, slot already taken? */
if (lp->non_tagged_cmd)
return -EBUSY;
@@ -564,9 +564,9 @@ static int esp_alloc_lun_tag(struct esp_cmd_entry *ent,
return -EBUSY;
}
- BUG_ON(lp->tagged_cmds[ent->tag[1]]);
+ BUG_ON(lp->tagged_cmds[ent->orig_tag[1]]);
- lp->tagged_cmds[ent->tag[1]] = ent;
+ lp->tagged_cmds[ent->orig_tag[1]] = ent;
lp->num_tagged++;
return 0;
@@ -575,9 +575,9 @@ static int esp_alloc_lun_tag(struct esp_cmd_entry *ent,
static void esp_free_lun_tag(struct esp_cmd_entry *ent,
struct esp_lun_data *lp)
{
- if (ent->tag[0]) {
- BUG_ON(lp->tagged_cmds[ent->tag[1]] != ent);
- lp->tagged_cmds[ent->tag[1]] = NULL;
+ if (ent->orig_tag[0]) {
+ BUG_ON(lp->tagged_cmds[ent->orig_tag[1]] != ent);
+ lp->tagged_cmds[ent->orig_tag[1]] = NULL;
lp->num_tagged--;
} else {
BUG_ON(lp->non_tagged_cmd != ent);
@@ -667,6 +667,8 @@ static struct esp_cmd_entry *find_and_prep_issuable_command(struct esp *esp)
ent->tag[0] = 0;
ent->tag[1] = 0;
}
+ ent->orig_tag[0] = ent->tag[0];
+ ent->orig_tag[1] = ent->tag[1];
if (esp_alloc_lun_tag(ent, lp) < 0)
continue;
diff --git a/drivers/scsi/esp_scsi.h b/drivers/scsi/esp_scsi.h
index 28e22acf87ea..cd68805e8d78 100644
--- a/drivers/scsi/esp_scsi.h
+++ b/drivers/scsi/esp_scsi.h
@@ -271,6 +271,7 @@ struct esp_cmd_entry {
#define ESP_CMD_FLAG_AUTOSENSE 0x04 /* Doing automatic REQUEST_SENSE */
u8 tag[2];
+ u8 orig_tag[2];
u8 status;
u8 message;
diff --git a/fs/proc/inode.c b/fs/proc/inode.c
index 073aea60cf8f..9f8ef9b7674d 100644
--- a/fs/proc/inode.c
+++ b/fs/proc/inode.c
@@ -285,6 +285,20 @@ static int proc_reg_mmap(struct file *file, struct vm_area_struct *vma)
return rv;
}
+static unsigned long proc_reg_get_unmapped_area(struct file *file, unsigned long orig_addr, unsigned long len, unsigned long pgoff, unsigned long flags)
+{
+ struct proc_dir_entry *pde = PDE(file_inode(file));
+ int rv = -EIO;
+ unsigned long (*get_unmapped_area)(struct file *, unsigned long, unsigned long, unsigned long, unsigned long);
+ if (use_pde(pde)) {
+ get_unmapped_area = pde->proc_fops->get_unmapped_area;
+ if (get_unmapped_area)
+ rv = get_unmapped_area(file, orig_addr, len, pgoff, flags);
+ unuse_pde(pde);
+ }
+ return rv;
+}
+
static int proc_reg_open(struct inode *inode, struct file *file)
{
struct proc_dir_entry *pde = PDE(inode);
@@ -356,6 +370,7 @@ static const struct file_operations proc_reg_file_ops = {
.compat_ioctl = proc_reg_compat_ioctl,
#endif
.mmap = proc_reg_mmap,
+ .get_unmapped_area = proc_reg_get_unmapped_area,
.open = proc_reg_open,
.release = proc_reg_release,
};
@@ -368,6 +383,7 @@ static const struct file_operations proc_reg_file_ops_no_compat = {
.poll = proc_reg_poll,
.unlocked_ioctl = proc_reg_unlocked_ioctl,
.mmap = proc_reg_mmap,
+ .get_unmapped_area = proc_reg_get_unmapped_area,
.open = proc_reg_open,
.release = proc_reg_release,
};

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