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Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6

Browse Source 
* master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6:
  [SPARC64]: Fix several kprobes bugs.
  [SPARC64]: Update defconfig.
  [SPARC64]: dma remove extra brackets
  [SPARC{32,64}]: Propagate ptrace_traceme() return value.
  [SPARC64]: Replace kmalloc+memset with kzalloc
  [SPARC]: Check kzalloc() return value in SUN4D irq/iommu init.
  [SPARC]: Replace kmalloc+memset with kzalloc
  [SPARC64]: Run ctrl-alt-del action for sun4v powerdown request.
  [SPARC64]: Unaligned accesses to userspace are hard errors.
  [SPARC64]: Call do_mathemu on illegal instruction traps too.
  [SPARC64]: Update defconfig.
  [SPARC64]: Add irqtrace/stacktrace/lockdep support.
This commit is contained in:
Linus Torvalds 2006-12-10 10:00:00 -08:00
commit edb16bec41
30 changed files with 470 additions and 195 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
arch/sparc/kernel/ioport.c
View File

@ -317,9 +317,8 @@ void *sbus_alloc_consistent(struct sbus_dev *sdev, long len, u32 *dma_addrp)
if ((va = __get_free_pages(GFP_KERNEL|__GFP_COMP, order)) == 0)
goto err_nopages;
if ((res = kmalloc(sizeof(struct resource), GFP_KERNEL)) == NULL)
if ((res = kzalloc(sizeof(struct resource), GFP_KERNEL)) == NULL)
goto err_nomem;
memset((char*)res, 0, sizeof(struct resource));
if (allocate_resource(&_sparc_dvma, res, len_total,
_sparc_dvma.start, _sparc_dvma.end, PAGE_SIZE, NULL, NULL) != 0) {
@ -589,12 +588,11 @@ void *pci_alloc_consistent(struct pci_dev *pdev, size_t len, dma_addr_t *pba)
return NULL;
}
if ((res = kmalloc(sizeof(struct resource), GFP_KERNEL)) == NULL) {
if ((res = kzalloc(sizeof(struct resource), GFP_KERNEL)) == NULL) {
free_pages(va, order);
printk("pci_alloc_consistent: no core\n");
return NULL;
}
memset((char*)res, 0, sizeof(struct resource));
if (allocate_resource(&_sparc_dvma, res, len_total,
_sparc_dvma.start, _sparc_dvma.end, PAGE_SIZE, NULL, NULL) != 0) {

3
arch/sparc/kernel/of_device.c
View File

@ -793,10 +793,9 @@ struct of_device* of_platform_device_create(struct device_node *np,
{
struct of_device *dev;
dev = kmalloc(sizeof(*dev), GFP_KERNEL);
dev = kzalloc(sizeof(*dev), GFP_KERNEL);
if (!dev)
return NULL;
memset(dev, 0, sizeof(*dev));
dev->dev.parent = parent;
dev->dev.bus = bus;

5
arch/sparc/kernel/ptrace.c
View File

@ -289,7 +289,10 @@ asmlinkage void do_ptrace(struct pt_regs *regs)
if (request == PTRACE_TRACEME) {
ret = ptrace_traceme();
pt_succ_return(regs, 0);
if (ret < 0)
pt_error_return(regs, -ret);
else
pt_succ_return(regs, 0);
goto out;
}

7
arch/sparc/kernel/sun4d_irq.c
View File

@ -545,8 +545,11 @@ void __init sun4d_init_sbi_irq(void)
nsbi = 0;
for_each_sbus(sbus)
nsbi++;
sbus_actions = (struct sbus_action *)kmalloc (nsbi * 8 * 4 * sizeof(struct sbus_action), GFP_ATOMIC);
memset (sbus_actions, 0, (nsbi * 8 * 4 * sizeof(struct sbus_action)));
sbus_actions = kzalloc (nsbi * 8 * 4 * sizeof(struct sbus_action), GFP_ATOMIC);
if (!sbus_actions) {
prom_printf("SUN4D: Cannot allocate sbus_actions, halting.\n");
prom_halt();
}
for_each_sbus(sbus) {
#ifdef CONFIG_SMP
extern unsigned char boot_cpu_id;

8
arch/sparc/mm/io-unit.c
View File

@ -22,6 +22,7 @@
#include <asm/cacheflush.h>
#include <asm/tlbflush.h>
#include <asm/dma.h>
#include <asm/oplib.h>
/* #define IOUNIT_DEBUG */
#ifdef IOUNIT_DEBUG
@ -41,9 +42,12 @@ iounit_init(int sbi_node, int io_node, struct sbus_bus *sbus)
struct linux_prom_registers iommu_promregs[PROMREG_MAX];
struct resource r;
iounit = kmalloc(sizeof(struct iounit_struct), GFP_ATOMIC);
iounit = kzalloc(sizeof(struct iounit_struct), GFP_ATOMIC);
if (!iounit) {
prom_printf("SUN4D: Cannot alloc iounit, halting.\n");
prom_halt();
}
memset(iounit, 0, sizeof(*iounit));
iounit->limit[0] = IOUNIT_BMAP1_START;
iounit->limit[1] = IOUNIT_BMAP2_START;
iounit->limit[2] = IOUNIT_BMAPM_START;

8
arch/sparc64/Kconfig
View File

@ -26,6 +26,14 @@ config MMU
bool
default y
config STACKTRACE_SUPPORT
bool
default y
config LOCKDEP_SUPPORT
bool
default y
config TIME_INTERPOLATION
bool
default y

4
arch/sparc64/Kconfig.debug
View File

@ -1,5 +1,9 @@
menu "Kernel hacking"
config TRACE_IRQFLAGS_SUPPORT
bool
default y
source "lib/Kconfig.debug"
config DEBUG_STACK_USAGE

54
arch/sparc64/defconfig
View File

@ -1,24 +1,29 @@
#
# Automatically generated make config: don't edit
# Linux kernel version: 2.6.19-rc2
# Tue Oct 17 19:29:20 2006
# Linux kernel version: 2.6.19
# Sat Dec 9 15:41:30 2006
#
CONFIG_SPARC=y
CONFIG_SPARC64=y
CONFIG_64BIT=y
CONFIG_MMU=y
CONFIG_STACKTRACE_SUPPORT=y
CONFIG_LOCKDEP_SUPPORT=y
CONFIG_TIME_INTERPOLATION=y
CONFIG_ARCH_MAY_HAVE_PC_FDC=y
# CONFIG_ARCH_HAS_ILOG2_U32 is not set
# CONFIG_ARCH_HAS_ILOG2_U64 is not set
CONFIG_AUDIT_ARCH=y
CONFIG_SPARC64_PAGE_SIZE_8KB=y
# CONFIG_SPARC64_PAGE_SIZE_64KB is not set
# CONFIG_SPARC64_PAGE_SIZE_512KB is not set
# CONFIG_SPARC64_PAGE_SIZE_4MB is not set
CONFIG_SECCOMP=y
# CONFIG_HZ_100 is not set
CONFIG_HZ_250=y
CONFIG_HZ_100=y
# CONFIG_HZ_250 is not set
# CONFIG_HZ_300 is not set
# CONFIG_HZ_1000 is not set
CONFIG_HZ=250
CONFIG_HZ=100
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
#
@ -42,13 +47,14 @@ CONFIG_POSIX_MQUEUE=y
# CONFIG_UTS_NS is not set
# CONFIG_AUDIT is not set
# CONFIG_IKCONFIG is not set
CONFIG_SYSFS_DEPRECATED=y
CONFIG_RELAY=y
CONFIG_INITRAMFS_SOURCE=""
CONFIG_CC_OPTIMIZE_FOR_SIZE=y
CONFIG_SYSCTL=y
# CONFIG_EMBEDDED is not set
CONFIG_UID16=y
# CONFIG_SYSCTL_SYSCALL is not set
CONFIG_SYSCTL_SYSCALL=y
CONFIG_KALLSYMS=y
# CONFIG_KALLSYMS_ALL is not set
# CONFIG_KALLSYMS_EXTRA_PASS is not set
@ -203,6 +209,7 @@ CONFIG_INET_TCP_DIAG=y
# CONFIG_TCP_CONG_ADVANCED is not set
CONFIG_TCP_CONG_CUBIC=y
CONFIG_DEFAULT_TCP_CONG="cubic"
# CONFIG_TCP_MD5SIG is not set
CONFIG_IPV6=m
CONFIG_IPV6_PRIVACY=y
CONFIG_IPV6_ROUTER_PREF=y
@ -219,7 +226,6 @@ CONFIG_INET6_XFRM_MODE_BEET=m
# CONFIG_INET6_XFRM_MODE_ROUTEOPTIMIZATION is not set
CONFIG_IPV6_SIT=m
CONFIG_IPV6_TUNNEL=m
# CONFIG_IPV6_SUBTREES is not set
# CONFIG_IPV6_MULTIPLE_TABLES is not set
# CONFIG_NETWORK_SECMARK is not set
# CONFIG_NETFILTER is not set
@ -238,6 +244,8 @@ CONFIG_IP_DCCP_CCID2=m
# CONFIG_IP_DCCP_CCID2_DEBUG is not set
CONFIG_IP_DCCP_CCID3=m
CONFIG_IP_DCCP_TFRC_LIB=m
# CONFIG_IP_DCCP_CCID3_DEBUG is not set
CONFIG_IP_DCCP_CCID3_RTO=100
#
# DCCP Kernel Hacking
@ -405,6 +413,7 @@ CONFIG_IDEDMA_AUTO=y
#
CONFIG_RAID_ATTRS=m
CONFIG_SCSI=y
# CONFIG_SCSI_TGT is not set
CONFIG_SCSI_NETLINK=y
CONFIG_SCSI_PROC_FS=y
@ -425,6 +434,7 @@ CONFIG_CHR_DEV_SG=m
CONFIG_SCSI_MULTI_LUN=y
CONFIG_SCSI_CONSTANTS=y
# CONFIG_SCSI_LOGGING is not set
# CONFIG_SCSI_SCAN_ASYNC is not set
#
# SCSI Transports
@ -468,6 +478,7 @@ CONFIG_ISCSI_TCP=m
# CONFIG_SCSI_DC390T is not set
# CONFIG_SCSI_DEBUG is not set
# CONFIG_SCSI_SUNESP is not set
# CONFIG_SCSI_SRP is not set
#
# Serial ATA (prod) and Parallel ATA (experimental) drivers
@ -598,6 +609,7 @@ CONFIG_BNX2=m
# CONFIG_IXGB is not set
# CONFIG_S2IO is not set
# CONFIG_MYRI10GE is not set
# CONFIG_NETXEN_NIC is not set
#
# Token Ring devices
@ -724,10 +736,6 @@ CONFIG_RTC=y
# CONFIG_DTLK is not set
# CONFIG_R3964 is not set
# CONFIG_APPLICOM is not set
#
# Ftape, the floppy tape device driver
#
# CONFIG_DRM is not set
# CONFIG_RAW_DRIVER is not set
@ -1038,6 +1046,11 @@ CONFIG_SND_SUN_CS4231=m
#
# CONFIG_SOUND_PRIME is not set
#
# HID Devices
#
CONFIG_HID=y
#
# USB support
#
@ -1053,6 +1066,7 @@ CONFIG_USB=y
CONFIG_USB_DEVICEFS=y
# CONFIG_USB_BANDWIDTH is not set
# CONFIG_USB_DYNAMIC_MINORS is not set
# CONFIG_USB_MULTITHREAD_PROBE is not set
# CONFIG_USB_OTG is not set
#
@ -1089,8 +1103,7 @@ CONFIG_USB_UHCI_HCD=m
# USB Input Devices
#
CONFIG_USB_HID=y
CONFIG_USB_HIDINPUT=y
# CONFIG_USB_HIDINPUT_POWERBOOK is not set
# CONFIG_USB_HID_POWERBOOK is not set
# CONFIG_HID_FF is not set
CONFIG_USB_HIDDEV=y
# CONFIG_USB_AIPTEK is not set
@ -1119,6 +1132,7 @@ CONFIG_USB_HIDDEV=y
# CONFIG_USB_KAWETH is not set
# CONFIG_USB_PEGASUS is not set
# CONFIG_USB_RTL8150 is not set
# CONFIG_USB_USBNET_MII is not set
# CONFIG_USB_USBNET is not set
# CONFIG_USB_MON is not set
@ -1363,6 +1377,11 @@ CONFIG_NLS_DEFAULT="iso8859-1"
# CONFIG_NLS_KOI8_U is not set
# CONFIG_NLS_UTF8 is not set
#
# Distributed Lock Manager
#
# CONFIG_DLM is not set
#
# Instrumentation Support
#
@ -1373,6 +1392,7 @@ CONFIG_KPROBES=y
#
# Kernel hacking
#
CONFIG_TRACE_IRQFLAGS_SUPPORT=y
CONFIG_PRINTK_TIME=y
CONFIG_ENABLE_MUST_CHECK=y
CONFIG_MAGIC_SYSRQ=y
@ -1387,6 +1407,8 @@ CONFIG_SCHEDSTATS=y
# CONFIG_DEBUG_SPINLOCK is not set
# CONFIG_DEBUG_MUTEXES is not set
# CONFIG_DEBUG_RWSEMS is not set
# CONFIG_DEBUG_LOCK_ALLOC is not set
# CONFIG_PROVE_LOCKING is not set
# CONFIG_DEBUG_SPINLOCK_SLEEP is not set
# CONFIG_DEBUG_LOCKING_API_SELFTESTS is not set
# CONFIG_DEBUG_KOBJECT is not set
@ -1420,8 +1442,9 @@ CONFIG_CRYPTO=y
CONFIG_CRYPTO_ALGAPI=y
CONFIG_CRYPTO_BLKCIPHER=y
CONFIG_CRYPTO_HASH=y
CONFIG_CRYPTO_MANAGER=m
CONFIG_CRYPTO_MANAGER=y
CONFIG_CRYPTO_HMAC=y
CONFIG_CRYPTO_XCBC=y
CONFIG_CRYPTO_NULL=m
CONFIG_CRYPTO_MD4=y
CONFIG_CRYPTO_MD5=y
@ -1430,8 +1453,10 @@ CONFIG_CRYPTO_SHA256=m
CONFIG_CRYPTO_SHA512=m
CONFIG_CRYPTO_WP512=m
CONFIG_CRYPTO_TGR192=m
CONFIG_CRYPTO_GF128MUL=m
CONFIG_CRYPTO_ECB=m
CONFIG_CRYPTO_CBC=y
CONFIG_CRYPTO_LRW=m
CONFIG_CRYPTO_DES=y
CONFIG_CRYPTO_BLOWFISH=m
CONFIG_CRYPTO_TWOFISH=m
@ -1456,6 +1481,7 @@ CONFIG_CRYPTO_TEST=m
#
# Library routines
#
CONFIG_BITREVERSE=y
CONFIG_CRC_CCITT=m
CONFIG_CRC16=m
CONFIG_CRC32=y

1
arch/sparc64/kernel/Makefile
View File

@ -14,6 +14,7 @@ obj-y := process.o setup.o cpu.o idprom.o \
power.o sbus.o iommu_common.o sparc64_ksyms.o chmc.o \
visemul.o prom.o of_device.o
obj-$(CONFIG_STACKTRACE) += stacktrace.o
obj-$(CONFIG_PCI) += ebus.o isa.o pci_common.o pci_iommu.o \
pci_psycho.o pci_sabre.o pci_schizo.o \
pci_sun4v.o pci_sun4v_asm.o

3
arch/sparc64/kernel/chmc.c
View File

@ -341,7 +341,7 @@ static void fetch_decode_regs(struct mctrl_info *mp)
static int init_one_mctrl(struct device_node *dp)
{
struct mctrl_info *mp = kmalloc(sizeof(*mp), GFP_KERNEL);
struct mctrl_info *mp = kzalloc(sizeof(*mp), GFP_KERNEL);
int portid = of_getintprop_default(dp, "portid", -1);
struct linux_prom64_registers *regs;
void *pval;
@ -349,7 +349,6 @@ static int init_one_mctrl(struct device_node *dp)
if (!mp)
return -1;
memset(mp, 0, sizeof(*mp));
if (portid == -1)
goto fail;

27
arch/sparc64/kernel/entry.S
View File

@ -597,7 +597,12 @@ __spitfire_cee_trap_continue:
1: ba,pt %xcc, etrap_irq
rd %pc, %g7
2: mov %l4, %o1
2:
#ifdef CONFIG_TRACE_IRQFLAGS
call trace_hardirqs_off
nop
#endif
mov %l4, %o1
mov %l5, %o2
call spitfire_access_error
add %sp, PTREGS_OFF, %o0
@ -824,6 +829,10 @@ do_cheetah_plus_data_parity:
wrpr %g0, 15, %pil
ba,pt %xcc, etrap_irq
rd %pc, %g7
#ifdef CONFIG_TRACE_IRQFLAGS
call trace_hardirqs_off
nop
#endif
mov 0x0, %o0
call cheetah_plus_parity_error
add %sp, PTREGS_OFF, %o1
@ -855,6 +864,10 @@ do_cheetah_plus_insn_parity:
wrpr %g0, 15, %pil
ba,pt %xcc, etrap_irq
rd %pc, %g7
#ifdef CONFIG_TRACE_IRQFLAGS
call trace_hardirqs_off
nop
#endif
mov 0x1, %o0
call cheetah_plus_parity_error
add %sp, PTREGS_OFF, %o1
@ -1183,6 +1196,10 @@ c_fast_ecc:
wrpr %g0, 15, %pil
ba,pt %xcc, etrap_irq
rd %pc, %g7
#ifdef CONFIG_TRACE_IRQFLAGS
call trace_hardirqs_off
nop
#endif
mov %l4, %o1
mov %l5, %o2
call cheetah_fecc_handler
@ -1211,6 +1228,10 @@ c_cee:
wrpr %g0, 15, %pil
ba,pt %xcc, etrap_irq
rd %pc, %g7
#ifdef CONFIG_TRACE_IRQFLAGS
call trace_hardirqs_off
nop
#endif
mov %l4, %o1
mov %l5, %o2
call cheetah_cee_handler
@ -1239,6 +1260,10 @@ c_deferred:
wrpr %g0, 15, %pil
ba,pt %xcc, etrap_irq
rd %pc, %g7
#ifdef CONFIG_TRACE_IRQFLAGS
call trace_hardirqs_off
nop
#endif
mov %l4, %o1
mov %l5, %o2
call cheetah_deferred_handler

8
arch/sparc64/kernel/head.S
View File

@ -489,6 +489,14 @@ tlb_fixup_done:
call __bzero
sub %o1, %o0, %o1
#ifdef CONFIG_LOCKDEP
/* We have this call this super early, as even prom_init can grab
* spinlocks and thus call into the lockdep code.
*/
call lockdep_init
nop
#endif
mov %l6, %o1 ! OpenPROM stack
call prom_init
mov %l7, %o0 ! OpenPROM cif handler

12
arch/sparc64/kernel/isa.c
View File

@ -72,14 +72,12 @@ static void __init isa_fill_children(struct sparc_isa_device *parent_isa_dev)
struct linux_prom_registers *regs;
struct sparc_isa_device *isa_dev;
isa_dev = kmalloc(sizeof(*isa_dev), GFP_KERNEL);
isa_dev = kzalloc(sizeof(*isa_dev), GFP_KERNEL);
if (!isa_dev) {
fatal_err("cannot allocate child isa_dev");
prom_halt();
}
memset(isa_dev, 0, sizeof(*isa_dev));
/* Link it in to parent. */
isa_dev->next = parent_isa_dev->child;
parent_isa_dev->child = isa_dev;
@ -104,14 +102,12 @@ static void __init isa_fill_devices(struct sparc_isa_bridge *isa_br)
struct linux_prom_registers *regs;
struct sparc_isa_device *isa_dev;
isa_dev = kmalloc(sizeof(*isa_dev), GFP_KERNEL);
isa_dev = kzalloc(sizeof(*isa_dev), GFP_KERNEL);
if (!isa_dev) {
printk(KERN_DEBUG "ISA: cannot allocate isa_dev");
return;
}
memset(isa_dev, 0, sizeof(*isa_dev));
isa_dev->ofdev.node = dp;
isa_dev->ofdev.dev.parent = &isa_br->ofdev.dev;
isa_dev->ofdev.dev.bus = &isa_bus_type;
@ -180,14 +176,12 @@ void __init isa_init(void)
pbm = pdev_cookie->pbm;
dp = pdev_cookie->prom_node;
isa_br = kmalloc(sizeof(*isa_br), GFP_KERNEL);
isa_br = kzalloc(sizeof(*isa_br), GFP_KERNEL);
if (!isa_br) {
printk(KERN_DEBUG "isa: cannot allocate sparc_isa_bridge");
return;
}
memset(isa_br, 0, sizeof(*isa_br));
isa_br->ofdev.node = dp;
isa_br->ofdev.dev.parent = &pdev->dev;
isa_br->ofdev.dev.bus = &isa_bus_type;

91
arch/sparc64/kernel/kprobes.c
View File

@ -45,7 +45,11 @@ DEFINE_PER_CPU(struct kprobe_ctlblk, kprobe_ctlblk);
int __kprobes arch_prepare_kprobe(struct kprobe *p)
{
p->ainsn.insn[0] = *p->addr;
flushi(&p->ainsn.insn[0]);
p->ainsn.insn[1] = BREAKPOINT_INSTRUCTION_2;
flushi(&p->ainsn.insn[1]);
p->opcode = *p->addr;
return 0;
}
@ -185,16 +189,19 @@ static int __kprobes kprobe_handler(struct pt_regs *regs)
/* If INSN is a relative control transfer instruction,
* return the corrected branch destination value.
*
* The original INSN location was REAL_PC, it actually
* executed at PC and produced destination address NPC.
* regs->tpc and regs->tnpc still hold the values of the
* program counters at the time of trap due to the execution
* of the BREAKPOINT_INSTRUCTION_2 at p->ainsn.insn[1]
*
*/
static unsigned long __kprobes relbranch_fixup(u32 insn, unsigned long real_pc,
unsigned long pc,
unsigned long npc)
static unsigned long __kprobes relbranch_fixup(u32 insn, struct kprobe *p,
struct pt_regs *regs)
{
unsigned long real_pc = (unsigned long) p->addr;
/* Branch not taken, no mods necessary. */
if (npc == pc + 0x4UL)
return real_pc + 0x4UL;
if (regs->tnpc == regs->tpc + 0x4UL)
return real_pc + 0x8UL;
/* The three cases are call, branch w/prediction,
* and traditional branch.
@ -202,14 +209,21 @@ static unsigned long __kprobes relbranch_fixup(u32 insn, unsigned long real_pc,
if ((insn & 0xc0000000) == 0x40000000 ||
(insn & 0xc1c00000) == 0x00400000 ||
(insn & 0xc1c00000) == 0x00800000) {
unsigned long ainsn_addr;
ainsn_addr = (unsigned long) &p->ainsn.insn[0];
/* The instruction did all the work for us
* already, just apply the offset to the correct
* instruction location.
*/
return (real_pc + (npc - pc));
return (real_pc + (regs->tnpc - ainsn_addr));
}
return real_pc + 0x4UL;
/* It is jmpl or some other absolute PC modification instruction,
* leave NPC as-is.
*/
return regs->tnpc;
}
/* If INSN is an instruction which writes it's PC location
@ -220,12 +234,12 @@ static void __kprobes retpc_fixup(struct pt_regs *regs, u32 insn,
{
unsigned long *slot = NULL;
/* Simplest cast is call, which always uses %o7 */
/* Simplest case is 'call', which always uses %o7 */
if ((insn & 0xc0000000) == 0x40000000) {
slot = &regs->u_regs[UREG_I7];
}
/* Jmpl encodes the register inside of the opcode */
/* 'jmpl' encodes the register inside of the opcode */
if ((insn & 0xc1f80000) == 0x81c00000) {
unsigned long rd = ((insn >> 25) & 0x1f);
@ -247,11 +261,11 @@ static void __kprobes retpc_fixup(struct pt_regs *regs, u32 insn,
/*
* Called after single-stepping. p->addr is the address of the
* instruction whose first byte has been replaced by the breakpoint
* instruction which has been replaced by the breakpoint
* instruction. To avoid the SMP problems that can occur when we
* temporarily put back the original opcode to single-step, we
* single-stepped a copy of the instruction. The address of this
* copy is p->ainsn.insn.
* copy is &p->ainsn.insn[0].
*
* This function prepares to return from the post-single-step
* breakpoint trap.
@ -261,11 +275,11 @@ static void __kprobes resume_execution(struct kprobe *p,
{
u32 insn = p->ainsn.insn[0];
regs->tnpc = relbranch_fixup(insn, p, regs);
/* This assignment must occur after relbranch_fixup() */
regs->tpc = kcb->kprobe_orig_tnpc;
regs->tnpc = relbranch_fixup(insn,
(unsigned long) p->addr,
(unsigned long) &p->ainsn.insn[0],
regs->tnpc);
retpc_fixup(regs, insn, (unsigned long) p->addr);
regs->tstate = ((regs->tstate & ~TSTATE_PIL) |
@ -430,17 +444,8 @@ int __kprobes setjmp_pre_handler(struct kprobe *p, struct pt_regs *regs)
struct jprobe *jp = container_of(p, struct jprobe, kp);
struct kprobe_ctlblk *kcb = get_kprobe_ctlblk();
kcb->jprobe_saved_regs_location = regs;
memcpy(&(kcb->jprobe_saved_regs), regs, sizeof(*regs));
/* Save a whole stack frame, this gets arguments
* pushed onto the stack after using up all the
* arg registers.
*/
memcpy(&(kcb->jprobe_saved_stack),
(char *) (regs->u_regs[UREG_FP] + STACK_BIAS),
sizeof(kcb->jprobe_saved_stack));
regs->tpc = (unsigned long) jp->entry;
regs->tnpc = ((unsigned long) jp->entry) + 0x4UL;
regs->tstate |= TSTATE_PIL;
@ -450,10 +455,19 @@ int __kprobes setjmp_pre_handler(struct kprobe *p, struct pt_regs *regs)
void __kprobes jprobe_return(void)
{
__asm__ __volatile__(
".globl jprobe_return_trap_instruction\n"
struct kprobe_ctlblk *kcb = get_kprobe_ctlblk();
register unsigned long orig_fp asm("g1");
orig_fp = kcb->jprobe_saved_regs.u_regs[UREG_FP];
__asm__ __volatile__("\n"
"1: cmp %%sp, %0\n\t"
"blu,a,pt %%xcc, 1b\n\t"
" restore\n\t"
".globl jprobe_return_trap_instruction\n"
"jprobe_return_trap_instruction:\n\t"
"ta 0x70");
"ta 0x70"
: /* no outputs */
: "r" (orig_fp));
}
extern void jprobe_return_trap_instruction(void);
@ -466,26 +480,7 @@ int __kprobes longjmp_break_handler(struct kprobe *p, struct pt_regs *regs)
struct kprobe_ctlblk *kcb = get_kprobe_ctlblk();
if (addr == (u32 *) jprobe_return_trap_instruction) {
if (kcb->jprobe_saved_regs_location != regs) {
printk("JPROBE: Current regs (%p) does not match "
"saved regs (%p).\n",
regs, kcb->jprobe_saved_regs_location);
printk("JPROBE: Saved registers\n");
__show_regs(kcb->jprobe_saved_regs_location);
printk("JPROBE: Current registers\n");
__show_regs(regs);
BUG();
}
/* Restore old register state. Do pt_regs
* first so that UREG_FP is the original one for
* the stack frame restore.
*/
memcpy(regs, &(kcb->jprobe_saved_regs), sizeof(*regs));
memcpy((char *) (regs->u_regs[UREG_FP] + STACK_BIAS),
&(kcb->jprobe_saved_stack),
sizeof(kcb->jprobe_saved_stack));
preempt_enable_no_resched();
return 1;
}

3
arch/sparc64/kernel/of_device.c
View File

@ -1007,10 +1007,9 @@ struct of_device* of_platform_device_create(struct device_node *np,
{
struct of_device *dev;
dev = kmalloc(sizeof(*dev), GFP_KERNEL);
dev = kzalloc(sizeof(*dev), GFP_KERNEL);
if (!dev)
return NULL;
memset(dev, 0, sizeof(*dev));
dev->dev.parent = parent;
dev->dev.bus = bus;

16
arch/sparc64/kernel/pci_sun4v.c
View File

@ -798,7 +798,7 @@ static struct pci_ops pci_sun4v_ops = {
static void pbm_scan_bus(struct pci_controller_info *p,
struct pci_pbm_info *pbm)
{
struct pcidev_cookie *cookie = kmalloc(sizeof(*cookie), GFP_KERNEL);
struct pcidev_cookie *cookie = kzalloc(sizeof(*cookie), GFP_KERNEL);
if (!cookie) {
prom_printf("%s: Critical allocation failure.\n", pbm->name);
@ -806,7 +806,6 @@ static void pbm_scan_bus(struct pci_controller_info *p,
}
/* All we care about is the PBM. */
memset(cookie, 0, sizeof(*cookie));
cookie->pbm = pbm;
pbm->pci_bus = pci_scan_bus(pbm->pci_first_busno, p->pci_ops, pbm);
@ -1048,12 +1047,11 @@ static void pci_sun4v_iommu_init(struct pci_pbm_info *pbm)
/* Allocate and initialize the free area map. */
sz = num_tsb_entries / 8;
sz = (sz + 7UL) & ~7UL;
iommu->arena.map = kmalloc(sz, GFP_KERNEL);
iommu->arena.map = kzalloc(sz, GFP_KERNEL);
if (!iommu->arena.map) {
prom_printf("PCI_IOMMU: Error, kmalloc(arena.map) failed.\n");
prom_halt();
}
memset(iommu->arena.map, 0, sz);
iommu->arena.limit = num_tsb_entries;
sz = probe_existing_entries(pbm, iommu);
@ -1164,24 +1162,20 @@ void sun4v_pci_init(struct device_node *dp, char *model_name)
per_cpu(pci_iommu_batch, i).pglist = (u64 *) page;
}
p = kmalloc(sizeof(struct pci_controller_info), GFP_ATOMIC);
p = kzalloc(sizeof(struct pci_controller_info), GFP_ATOMIC);
if (!p)
goto fatal_memory_error;
memset(p, 0, sizeof(*p));
iommu = kmalloc(sizeof(struct pci_iommu), GFP_ATOMIC);
iommu = kzalloc(sizeof(struct pci_iommu), GFP_ATOMIC);
if (!iommu)
goto fatal_memory_error;
memset(iommu, 0, sizeof(*iommu));
p->pbm_A.iommu = iommu;
iommu = kmalloc(sizeof(struct pci_iommu), GFP_ATOMIC);
iommu = kzalloc(sizeof(struct pci_iommu), GFP_ATOMIC);
if (!iommu)
goto fatal_memory_error;
memset(iommu, 0, sizeof(*iommu));
p->pbm_B.iommu = iommu;
p->next = pci_controller_root;

5
arch/sparc64/kernel/ptrace.c
View File

@ -202,7 +202,10 @@ asmlinkage void do_ptrace(struct pt_regs *regs)
#endif
if (request == PTRACE_TRACEME) {
ret = ptrace_traceme();
pt_succ_return(regs, 0);
if (ret < 0)
pt_error_return(regs, -ret);
else
pt_succ_return(regs, 0);
goto out;
}

23
arch/sparc64/kernel/rtrap.S
View File

@ -165,14 +165,26 @@ rtrap:
__handle_softirq_continue:
rtrap_xcall:
sethi %hi(0xf << 20), %l4
andcc %l1, TSTATE_PRIV, %l3
and %l1, %l4, %l4
andn %l1, %l4, %l1
srl %l4, 20, %l4
#ifdef CONFIG_TRACE_IRQFLAGS
brnz,pn %l4, rtrap_no_irq_enable
nop
call trace_hardirqs_on
nop
wrpr %l4, %pil
rtrap_no_irq_enable:
#endif
andcc %l1, TSTATE_PRIV, %l3
bne,pn %icc, to_kernel
andn %l1, %l4, %l1
nop
/* We must hold IRQs off and atomically test schedule+signal
* state, then hold them off all the way back to userspace.
* If we are returning to kernel, none of this matters.
* If we are returning to kernel, none of this matters. Note
* that we are disabling interrupts via PSTATE_IE, not using
* %pil.
*
* If we do not do this, there is a window where we would do
* the tests, later the signal/resched event arrives but we do
@ -256,7 +268,6 @@ rt_continue: ldx [%sp + PTREGS_OFF + PT_V9_G1], %g1
ld [%sp + PTREGS_OFF + PT_V9_Y], %o3
wr %o3, %g0, %y
srl %l4, 20, %l4
wrpr %l4, 0x0, %pil
wrpr %g0, 0x1, %tl
wrpr %l1, %g0, %tstate
@ -374,8 +385,8 @@ to_kernel:
ldx [%g6 + TI_FLAGS], %l5
andcc %l5, _TIF_NEED_RESCHED, %g0
be,pt %xcc, kern_fpucheck
srl %l4, 20, %l5
cmp %l5, 0
nop
cmp %l4, 0
bne,pn %xcc, kern_fpucheck
sethi %hi(PREEMPT_ACTIVE), %l6
stw %l6, [%g6 + TI_PRE_COUNT]

41
arch/sparc64/kernel/stacktrace.c Normal file
View File

@ -0,0 +1,41 @@
#include <linux/sched.h>
#include <linux/stacktrace.h>
#include <linux/thread_info.h>
#include <asm/ptrace.h>
void save_stack_trace(struct stack_trace *trace, struct task_struct *task)
{
unsigned long ksp, fp, thread_base;
struct thread_info *tp;
if (!task)
task = current;
tp = task_thread_info(task);
if (task == current) {
flushw_all();
__asm__ __volatile__(
"mov %%fp, %0"
: "=r" (ksp)
);
} else
ksp = tp->ksp;
fp = ksp + STACK_BIAS;
thread_base = (unsigned long) tp;
do {
struct reg_window *rw;
/* Bogus frame pointer? */
if (fp < (thread_base + sizeof(struct thread_info)) ||
fp >= (thread_base + THREAD_SIZE))
break;
rw = (struct reg_window *) fp;
if (trace->skip > 0)
trace->skip--;
else
trace->entries[trace->nr_entries++] = rw->ins[7];
fp = rw->ins[6] + STACK_BIAS;
} while (trace->nr_entries < trace->max_entries);
}

20
arch/sparc64/kernel/sun4v_ivec.S
View File

@ -190,7 +190,10 @@ sun4v_res_mondo:
mov %g1, %g4
ba,pt %xcc, etrap_irq
rd %pc, %g7
#ifdef CONFIG_TRACE_IRQFLAGS
call trace_hardirqs_off
nop
#endif
/* Log the event. */
add %sp, PTREGS_OFF, %o0
call sun4v_resum_error
@ -216,7 +219,10 @@ sun4v_res_mondo_queue_full:
wrpr %g0, 15, %pil
ba,pt %xcc, etrap_irq
rd %pc, %g7
#ifdef CONFIG_TRACE_IRQFLAGS
call trace_hardirqs_off
nop
#endif
call sun4v_resum_overflow
add %sp, PTREGS_OFF, %o0
@ -295,7 +301,10 @@ sun4v_nonres_mondo:
mov %g1, %g4
ba,pt %xcc, etrap_irq
rd %pc, %g7
#ifdef CONFIG_TRACE_IRQFLAGS
call trace_hardirqs_off
nop
#endif
/* Log the event. */
add %sp, PTREGS_OFF, %o0
call sun4v_nonresum_error
@ -321,7 +330,10 @@ sun4v_nonres_mondo_queue_full:
wrpr %g0, 15, %pil
ba,pt %xcc, etrap_irq
rd %pc, %g7
#ifdef CONFIG_TRACE_IRQFLAGS
call trace_hardirqs_off
nop
#endif
call sun4v_nonresum_overflow
add %sp, PTREGS_OFF, %o0

30
arch/sparc64/kernel/traps.c
View File

@ -10,7 +10,7 @@
*/
#include <linux/module.h>
#include <linux/sched.h> /* for jiffies */
#include <linux/sched.h>
#include <linux/kernel.h>
#include <linux/kallsyms.h>
#include <linux/signal.h>
@ -1873,6 +1873,16 @@ void sun4v_resum_error(struct pt_regs *regs, unsigned long offset)
put_cpu();
if (ent->err_type == SUN4V_ERR_TYPE_WARNING_RES) {
/* If err_type is 0x4, it's a powerdown request. Do
* not do the usual resumable error log because that
* makes it look like some abnormal error.
*/
printk(KERN_INFO "Power down request...\n");
kill_cad_pid(SIGINT, 1);
return;
}
sun4v_log_error(regs, &local_copy, cpu,
KERN_ERR "RESUMABLE ERROR",
&sun4v_resum_oflow_cnt);
@ -2261,8 +2271,12 @@ void die_if_kernel(char *str, struct pt_regs *regs)
do_exit(SIGSEGV);
}
#define VIS_OPCODE_MASK ((0x3 << 30) | (0x3f << 19))
#define VIS_OPCODE_VAL ((0x2 << 30) | (0x36 << 19))
extern int handle_popc(u32 insn, struct pt_regs *regs);
extern int handle_ldf_stq(u32 insn, struct pt_regs *regs);
extern int vis_emul(struct pt_regs *, unsigned int);
void do_illegal_instruction(struct pt_regs *regs)
{
@ -2287,10 +2301,18 @@ void do_illegal_instruction(struct pt_regs *regs)
if (handle_ldf_stq(insn, regs))
return;
} else if (tlb_type == hypervisor) {
extern int vis_emul(struct pt_regs *, unsigned int);
if ((insn & VIS_OPCODE_MASK) == VIS_OPCODE_VAL) {
if (!vis_emul(regs, insn))
return;
} else {
struct fpustate *f = FPUSTATE;
if (!vis_emul(regs, insn))
return;
/* XXX maybe verify XFSR bits like
* XXX do_fpother() does?
*/
if (do_mathemu(regs, f))
return;
}
}
}
info.si_signo = SIGILL;

44
arch/sparc64/kernel/unaligned.c
View File

@ -243,7 +243,7 @@ static inline int ok_for_kernel(unsigned int insn)
return !floating_point_load_or_store_p(insn);
}
static void kernel_mna_trap_fault(void)
static void kernel_mna_trap_fault(int fixup_tstate_asi)
{
struct pt_regs *regs = current_thread_info()->kern_una_regs;
unsigned int insn = current_thread_info()->kern_una_insn;
@ -274,18 +274,15 @@ static void kernel_mna_trap_fault(void)
regs->tpc = entry->fixup;
regs->tnpc = regs->tpc + 4;
regs->tstate &= ~TSTATE_ASI;
regs->tstate |= (ASI_AIUS << 24UL);
if (fixup_tstate_asi) {
regs->tstate &= ~TSTATE_ASI;
regs->tstate |= (ASI_AIUS << 24UL);
}
}
asmlinkage void kernel_unaligned_trap(struct pt_regs *regs, unsigned int insn)
static void log_unaligned(struct pt_regs *regs)
{
static unsigned long count, last_time;
enum direction dir = decode_direction(insn);
int size = decode_access_size(insn);
current_thread_info()->kern_una_regs = regs;
current_thread_info()->kern_una_insn = insn;
if (jiffies - last_time > 5 * HZ)
count = 0;
@ -295,6 +292,28 @@ asmlinkage void kernel_unaligned_trap(struct pt_regs *regs, unsigned int insn)
printk("Kernel unaligned access at TPC[%lx] ", regs->tpc);
print_symbol("%s\n", regs->tpc);
}
}
asmlinkage void kernel_unaligned_trap(struct pt_regs *regs, unsigned int insn)
{
enum direction dir = decode_direction(insn);
int size = decode_access_size(insn);
int orig_asi, asi;
current_thread_info()->kern_una_regs = regs;
current_thread_info()->kern_una_insn = insn;
orig_asi = asi = decode_asi(insn, regs);
/* If this is a {get,put}_user() on an unaligned userspace pointer,
* just signal a fault and do not log the event.
*/
if (asi == ASI_AIUS) {
kernel_mna_trap_fault(0);
return;
}
log_unaligned(regs);
if (!ok_for_kernel(insn) || dir == both) {
printk("Unsupported unaligned load/store trap for kernel "
@ -302,10 +321,10 @@ asmlinkage void kernel_unaligned_trap(struct pt_regs *regs, unsigned int insn)
unaligned_panic("Kernel does fpu/atomic "
"unaligned load/store.", regs);
kernel_mna_trap_fault();
kernel_mna_trap_fault(0);
} else {
unsigned long addr, *reg_addr;
int orig_asi, asi, err;
int err;
addr = compute_effective_address(regs, insn,
((insn >> 25) & 0x1f));
@ -315,7 +334,6 @@ asmlinkage void kernel_unaligned_trap(struct pt_regs *regs, unsigned int insn)
regs->tpc, dirstrings[dir], addr, size,
regs->u_regs[UREG_RETPC]);
#endif
orig_asi = asi = decode_asi(insn, regs);
switch (asi) {
case ASI_NL:
case ASI_AIUPL:
@ -365,7 +383,7 @@ asmlinkage void kernel_unaligned_trap(struct pt_regs *regs, unsigned int insn)
/* Not reached... */
}
if (unlikely(err))
kernel_mna_trap_fault();
kernel_mna_trap_fault(1);
else
advance(regs);
}

6
arch/sparc64/kernel/visemul.c
View File

@ -128,9 +128,6 @@
/* 001001100 - Permute bytes as specified by GSR.MASK */
#define BSHUFFLE_OPF 0x04c
#define VIS_OPCODE_MASK ((0x3 << 30) | (0x3f << 19))
#define VIS_OPCODE_VAL ((0x2 << 30) | (0x36 << 19))
#define VIS_OPF_SHIFT 5
#define VIS_OPF_MASK (0x1ff << VIS_OPF_SHIFT)
@ -810,9 +807,6 @@ int vis_emul(struct pt_regs *regs, unsigned int insn)
if (get_user(insn, (u32 __user *) pc))
return -EFAULT;
if ((insn & VIS_OPCODE_MASK) != VIS_OPCODE_VAL)
return -EINVAL;
opf = (insn & VIS_OPF_MASK) >> VIS_OPF_SHIFT;
switch (opf) {
default:

8
arch/sparc64/mm/ultra.S
View File

@ -477,6 +477,10 @@ xcall_sync_tick:
sethi %hi(109f), %g7
b,pt %xcc, etrap_irq
109: or %g7, %lo(109b), %g7
#ifdef CONFIG_TRACE_IRQFLAGS
call trace_hardirqs_off
nop
#endif
call smp_synchronize_tick_client
nop
clr %l6
@ -508,6 +512,10 @@ xcall_report_regs:
sethi %hi(109f), %g7
b,pt %xcc, etrap_irq
109: or %g7, %lo(109b), %g7
#ifdef CONFIG_TRACE_IRQFLAGS
call trace_hardirqs_off
nop
#endif
call __show_regs
add %sp, PTREGS_OFF, %o0
clr %l6

6
include/asm-sparc64/dma.h
View File

@ -152,9 +152,9 @@ extern void dvma_init(struct sbus_bus *);
#define DMA_MAXEND(addr) (0x01000000UL-(((unsigned long)(addr))&0x00ffffffUL))
/* Yes, I hack a lot of elisp in my spare time... */
#define DMA_ERROR_P(regs) (((sbus_readl((regs) + DMA_CSR) & DMA_HNDL_ERROR))
#define DMA_IRQ_P(regs) (((sbus_readl((regs) + DMA_CSR)) & (DMA_HNDL_INTR | DMA_HNDL_ERROR)))
#define DMA_WRITE_P(regs) (((sbus_readl((regs) + DMA_CSR) & DMA_ST_WRITE))
#define DMA_ERROR_P(regs) ((sbus_readl((regs) + DMA_CSR) & DMA_HNDL_ERROR))
#define DMA_IRQ_P(regs) ((sbus_readl((regs) + DMA_CSR)) & (DMA_HNDL_INTR | DMA_HNDL_ERROR))
#define DMA_WRITE_P(regs) ((sbus_readl((regs) + DMA_CSR) & DMA_ST_WRITE))
#define DMA_OFF(__regs) \
do { u32 tmp = sbus_readl((__regs) + DMA_CSR); \
tmp &= ~DMA_ENABLE; \

89
include/asm-sparc64/irqflags.h Normal file
View File

@ -0,0 +1,89 @@
/*
* include/asm-sparc64/irqflags.h
*
* IRQ flags handling
*
* This file gets included from lowlevel asm headers too, to provide
* wrapped versions of the local_irq_*() APIs, based on the
* raw_local_irq_*() functions from the lowlevel headers.
*/
#ifndef _ASM_IRQFLAGS_H
#define _ASM_IRQFLAGS_H
#ifndef __ASSEMBLY__
static inline unsigned long __raw_local_save_flags(void)
{
unsigned long flags;
__asm__ __volatile__(
"rdpr %%pil, %0"
: "=r" (flags)
);
return flags;
}
#define raw_local_save_flags(flags) \
do { (flags) = __raw_local_save_flags(); } while (0)
static inline void raw_local_irq_restore(unsigned long flags)
{
__asm__ __volatile__(
"wrpr %0, %%pil"
: /* no output */
: "r" (flags)
: "memory"
);
}
static inline void raw_local_irq_disable(void)
{
__asm__ __volatile__(
"wrpr 15, %%pil"
: /* no outputs */
: /* no inputs */
: "memory"
);
}
static inline void raw_local_irq_enable(void)
{
__asm__ __volatile__(
"wrpr 0, %%pil"
: /* no outputs */
: /* no inputs */
: "memory"
);
}
static inline int raw_irqs_disabled_flags(unsigned long flags)
{
return (flags > 0);
}
static inline int raw_irqs_disabled(void)
{
unsigned long flags = __raw_local_save_flags();
return raw_irqs_disabled_flags(flags);
}
/*
* For spinlocks, etc:
*/
static inline unsigned long __raw_local_irq_save(void)
{
unsigned long flags = __raw_local_save_flags();
raw_local_irq_disable();
return flags;
}
#define raw_local_irq_save(flags) \
do { (flags) = __raw_local_irq_save(); } while (0)
#endif /* (__ASSEMBLY__) */
#endif /* !(_ASM_IRQFLAGS_H) */

11
include/asm-sparc64/kprobes.h
View File

@ -13,7 +13,11 @@ typedef u32 kprobe_opcode_t;
#define JPROBE_ENTRY(pentry) (kprobe_opcode_t *)pentry
#define arch_remove_kprobe(p) do {} while (0)
#define ARCH_INACTIVE_KPROBE_COUNT 0
#define flush_insn_slot(p) do { } while (0)
#define flush_insn_slot(p) \
do { flushi(&(p)->ainsn.insn[0]); \
flushi(&(p)->ainsn.insn[1]); \
} while (0)
/* Architecture specific copy of original instruction*/
struct arch_specific_insn {
@ -23,7 +27,7 @@ struct arch_specific_insn {
struct prev_kprobe {
struct kprobe *kp;
unsigned int status;
unsigned long status;
unsigned long orig_tnpc;
unsigned long orig_tstate_pil;
};
@ -33,10 +37,7 @@ struct kprobe_ctlblk {
unsigned long kprobe_status;
unsigned long kprobe_orig_tnpc;
unsigned long kprobe_orig_tstate_pil;
long *jprobe_saved_esp;
struct pt_regs jprobe_saved_regs;
struct pt_regs *jprobe_saved_regs_location;
struct sparc_stackf jprobe_saved_stack;
struct prev_kprobe prev_kprobe;
};

32
include/asm-sparc64/rwsem.h
View File

@ -23,20 +23,33 @@ struct rw_semaphore {
signed int count;
spinlock_t wait_lock;
struct list_head wait_list;
#ifdef CONFIG_DEBUG_LOCK_ALLOC
struct lockdep_map dep_map;
#endif
};
#ifdef CONFIG_DEBUG_LOCK_ALLOC
# define __RWSEM_DEP_MAP_INIT(lockname) , .dep_map = { .name = #lockname }
#else
# define __RWSEM_DEP_MAP_INIT(lockname)
#endif
#define __RWSEM_INITIALIZER(name) \
{ RWSEM_UNLOCKED_VALUE, SPIN_LOCK_UNLOCKED, LIST_HEAD_INIT((name).wait_list) }
{ RWSEM_UNLOCKED_VALUE, SPIN_LOCK_UNLOCKED, LIST_HEAD_INIT((name).wait_list) \
__RWSEM_DEP_MAP_INIT(name) }
#define DECLARE_RWSEM(name) \
struct rw_semaphore name = __RWSEM_INITIALIZER(name)
static __inline__ void init_rwsem(struct rw_semaphore *sem)
{
sem->count = RWSEM_UNLOCKED_VALUE;
spin_lock_init(&sem->wait_lock);
INIT_LIST_HEAD(&sem->wait_list);
}
extern void __init_rwsem(struct rw_semaphore *sem, const char *name,
struct lock_class_key *key);
#define init_rwsem(sem) \
do { \
static struct lock_class_key __key; \
\
__init_rwsem((sem), #sem, &__key); \
} while (0)
extern void __down_read(struct rw_semaphore *sem);
extern int __down_read_trylock(struct rw_semaphore *sem);
@ -46,6 +59,11 @@ extern void __up_read(struct rw_semaphore *sem);
extern void __up_write(struct rw_semaphore *sem);
extern void __downgrade_write(struct rw_semaphore *sem);
static inline void __down_write_nested(struct rw_semaphore *sem, int subclass)
{
__down_write(sem);
}
static inline int rwsem_atomic_update(int delta, struct rw_semaphore *sem)
{
return atomic_add_return(delta, (atomic_t *)(&sem->count));

49
include/asm-sparc64/system.h
View File

@ -7,6 +7,9 @@
#include <asm/visasm.h>
#ifndef __ASSEMBLY__
#include <linux/irqflags.h>
/*
* Sparc (general) CPU types
*/
@ -72,52 +75,6 @@ do { __asm__ __volatile__("ba,pt %%xcc, 1f\n\t" \
#endif
#define setipl(__new_ipl) \
__asm__ __volatile__("wrpr %0, %%pil" : : "r" (__new_ipl) : "memory")
#define local_irq_disable() \
__asm__ __volatile__("wrpr 15, %%pil" : : : "memory")
#define local_irq_enable() \
__asm__ __volatile__("wrpr 0, %%pil" : : : "memory")
#define getipl() \
({ unsigned long retval; __asm__ __volatile__("rdpr %%pil, %0" : "=r" (retval)); retval; })
#define swap_pil(__new_pil) \
({ unsigned long retval; \
__asm__ __volatile__("rdpr %%pil, %0\n\t" \
"wrpr %1, %%pil" \
: "=&r" (retval) \
: "r" (__new_pil) \
: "memory"); \
retval; \
})
#define read_pil_and_cli() \
({ unsigned long retval; \
__asm__ __volatile__("rdpr %%pil, %0\n\t" \
"wrpr 15, %%pil" \
: "=r" (retval) \
: : "memory"); \
retval; \
})
#define local_save_flags(flags) ((flags) = getipl())
#define local_irq_save(flags) ((flags) = read_pil_and_cli())
#define local_irq_restore(flags) setipl((flags))
/* On sparc64 IRQ flags are the PIL register. A value of zero
* means all interrupt levels are enabled, any other value means
* only IRQ levels greater than that value will be received.
* Consequently this means that the lowest IRQ level is one.
*/
#define irqs_disabled() \
({ unsigned long flags; \
local_save_flags(flags);\
(flags > 0); \
})
#define nop() __asm__ __volatile__ ("nop")
#define read_barrier_depends() do { } while(0)

45
include/asm-sparc64/ttable.h
View File

@ -137,10 +137,49 @@
#endif
#define BREAKPOINT_TRAP TRAP(breakpoint_trap)
#ifdef CONFIG_TRACE_IRQFLAGS
#define TRAP_IRQ(routine, level) \
rdpr %pil, %g2; \
wrpr %g0, 15, %pil; \
b,pt %xcc, etrap_irq; \
sethi %hi(1f-4), %g7; \
ba,pt %xcc, etrap_irq; \
or %g7, %lo(1f-4), %g7; \
nop; \
nop; \
nop; \
.subsection 2; \
1: call trace_hardirqs_off; \
nop; \
mov level, %o0; \
call routine; \
add %sp, PTREGS_OFF, %o1; \
ba,a,pt %xcc, rtrap_irq; \
.previous;
#define TICK_SMP_IRQ \
rdpr %pil, %g2; \
wrpr %g0, 15, %pil; \
sethi %hi(1f-4), %g7; \
ba,pt %xcc, etrap_irq; \
or %g7, %lo(1f-4), %g7; \
nop; \
nop; \
nop; \
.subsection 2; \
1: call trace_hardirqs_off; \
nop; \
call smp_percpu_timer_interrupt; \
add %sp, PTREGS_OFF, %o0; \
ba,a,pt %xcc, rtrap_irq; \
.previous;
#else
#define TRAP_IRQ(routine, level) \
rdpr %pil, %g2; \
wrpr %g0, 15, %pil; \
ba,pt %xcc, etrap_irq; \
rd %pc, %g7; \
mov level, %o0; \
call routine; \
@ -151,12 +190,14 @@
rdpr %pil, %g2; \
wrpr %g0, 15, %pil; \
sethi %hi(109f), %g7; \
b,pt %xcc, etrap_irq; \
ba,pt %xcc, etrap_irq; \
109: or %g7, %lo(109b), %g7; \
call smp_percpu_timer_interrupt; \
add %sp, PTREGS_OFF, %o0; \
ba,a,pt %xcc, rtrap_irq;
#endif
#define TRAP_IVEC TRAP_NOSAVE(do_ivec)
#define BTRAP(lvl) TRAP_ARG(bad_trap, lvl)