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-rw-r--r--arch/sparc64/Kconfig1
-rw-r--r--arch/sparc64/kernel/compat_audit.c2
-rw-r--r--arch/sparc64/kernel/entry.h3
-rw-r--r--arch/sparc64/kernel/irq.c19
-rw-r--r--arch/sparc64/kernel/of_device.c5
-rw-r--r--arch/sparc64/kernel/process.c110
-rw-r--r--arch/sparc64/kernel/ptrace.c32
-rw-r--r--arch/sparc64/kernel/rtrap.S6
-rw-r--r--arch/sparc64/kernel/signal.c13
-rw-r--r--arch/sparc64/kernel/signal32.c3
-rw-r--r--arch/sparc64/kernel/smp.c298
-rw-r--r--arch/sparc64/kernel/sparc64_ksyms.c1
-rw-r--r--arch/sparc64/kernel/syscalls.S4
-rw-r--r--arch/sparc64/kernel/traps.c10
-rw-r--r--arch/sparc64/mm/tsb.c5
-rw-r--r--arch/sparc64/mm/ultra.S42
16 files changed, 246 insertions, 308 deletions
diff --git a/arch/sparc64/Kconfig b/arch/sparc64/Kconfig
index 7c88263256af..923a98959fa7 100644
--- a/arch/sparc64/Kconfig
+++ b/arch/sparc64/Kconfig
@@ -17,6 +17,7 @@ config SPARC64
select HAVE_LMB
select HAVE_ARCH_KGDB
select USE_GENERIC_SMP_HELPERS if SMP
+ select HAVE_ARCH_TRACEHOOK
config GENERIC_TIME
bool
diff --git a/arch/sparc64/kernel/compat_audit.c b/arch/sparc64/kernel/compat_audit.c
index c1979482aa92..c831b0a4e660 100644
--- a/arch/sparc64/kernel/compat_audit.c
+++ b/arch/sparc64/kernel/compat_audit.c
@@ -1,4 +1,4 @@
-#include <asm-sparc/unistd.h>
+#include <asm/unistd_32.h>
unsigned sparc32_dir_class[] = {
#include <asm-generic/audit_dir_write.h>
diff --git a/arch/sparc64/kernel/entry.h b/arch/sparc64/kernel/entry.h
index 32fbab620852..fc294a292899 100644
--- a/arch/sparc64/kernel/entry.h
+++ b/arch/sparc64/kernel/entry.h
@@ -22,8 +22,7 @@ extern void do_notify_resume(struct pt_regs *regs,
unsigned long orig_i0,
unsigned long thread_info_flags);
-extern asmlinkage void syscall_trace(struct pt_regs *regs,
- int syscall_exit_p);
+extern asmlinkage int syscall_trace(struct pt_regs *regs, int syscall_exit_p);
extern void bad_trap_tl1(struct pt_regs *regs, long lvl);
diff --git a/arch/sparc64/kernel/irq.c b/arch/sparc64/kernel/irq.c
index c481673d249c..ba43d85e8dde 100644
--- a/arch/sparc64/kernel/irq.c
+++ b/arch/sparc64/kernel/irq.c
@@ -915,12 +915,18 @@ static void __init sun4v_init_mondo_queues(void)
alloc_one_mondo(&tb->nonresum_mondo_pa, tb->nonresum_qmask);
alloc_one_kbuf(&tb->nonresum_kernel_buf_pa,
tb->nonresum_qmask);
+ }
+}
+
+static void __init init_send_mondo_info(void)
+{
+ int cpu;
+
+ for_each_possible_cpu(cpu) {
+ struct trap_per_cpu *tb = &trap_block[cpu];
init_cpu_send_mondo_info(tb);
}
-
- /* Load up the boot cpu's entries. */
- sun4v_register_mondo_queues(hard_smp_processor_id());
}
static struct irqaction timer_irq_action = {
@@ -949,6 +955,13 @@ void __init init_IRQ(void)
if (tlb_type == hypervisor)
sun4v_init_mondo_queues();
+ init_send_mondo_info();
+
+ if (tlb_type == hypervisor) {
+ /* Load up the boot cpu's entries. */
+ sun4v_register_mondo_queues(hard_smp_processor_id());
+ }
+
/* We need to clear any IRQ's pending in the soft interrupt
* registers, a spurious one could be left around from the
* PROM timer which we just disabled.
diff --git a/arch/sparc64/kernel/of_device.c b/arch/sparc64/kernel/of_device.c
index 4fd48ab7dda4..f8b50cbf4bf7 100644
--- a/arch/sparc64/kernel/of_device.c
+++ b/arch/sparc64/kernel/of_device.c
@@ -56,9 +56,6 @@ struct of_device *of_find_device_by_node(struct device_node *dp)
EXPORT_SYMBOL(of_find_device_by_node);
#ifdef CONFIG_PCI
-struct bus_type isa_bus_type;
-EXPORT_SYMBOL(isa_bus_type);
-
struct bus_type ebus_bus_type;
EXPORT_SYMBOL(ebus_bus_type);
#endif
@@ -842,8 +839,6 @@ static int __init of_bus_driver_init(void)
err = of_bus_type_init(&of_platform_bus_type, "of");
#ifdef CONFIG_PCI
if (!err)
- err = of_bus_type_init(&isa_bus_type, "isa");
- if (!err)
err = of_bus_type_init(&ebus_bus_type, "ebus");
#endif
#ifdef CONFIG_SBUS
diff --git a/arch/sparc64/kernel/process.c b/arch/sparc64/kernel/process.c
index 8a9cd3e165b9..7f5debdc5fed 100644
--- a/arch/sparc64/kernel/process.c
+++ b/arch/sparc64/kernel/process.c
@@ -52,8 +52,6 @@
#include <asm/irq_regs.h>
#include <asm/smp.h>
-/* #define VERBOSE_SHOWREGS */
-
static void sparc64_yield(int cpu)
{
if (tlb_type != hypervisor)
@@ -213,22 +211,8 @@ static void show_regwindow(struct pt_regs *regs)
printk("I7: <%pS>\n", (void *) rwk->ins[7]);
}
-#ifdef CONFIG_SMP
-static DEFINE_SPINLOCK(regdump_lock);
-#endif
-
-void __show_regs(struct pt_regs * regs)
+void show_regs(struct pt_regs *regs)
{
-#ifdef CONFIG_SMP
- unsigned long flags;
-
- /* Protect against xcall ipis which might lead to livelock on the lock */
- __asm__ __volatile__("rdpr %%pstate, %0\n\t"
- "wrpr %0, %1, %%pstate"
- : "=r" (flags)
- : "i" (PSTATE_IE));
- spin_lock(&regdump_lock);
-#endif
printk("TSTATE: %016lx TPC: %016lx TNPC: %016lx Y: %08x %s\n", regs->tstate,
regs->tpc, regs->tnpc, regs->y, print_tainted());
printk("TPC: <%pS>\n", (void *) regs->tpc);
@@ -246,64 +230,24 @@ void __show_regs(struct pt_regs * regs)
regs->u_regs[15]);
printk("RPC: <%pS>\n", (void *) regs->u_regs[15]);
show_regwindow(regs);
-#ifdef CONFIG_SMP
- spin_unlock(&regdump_lock);
- __asm__ __volatile__("wrpr %0, 0, %%pstate"
- : : "r" (flags));
-#endif
}
-#ifdef VERBOSE_SHOWREGS
-static void idump_from_user (unsigned int *pc)
-{
- int i;
- int code;
-
- if((((unsigned long) pc) & 3))
- return;
-
- pc -= 3;
- for(i = -3; i < 6; i++) {
- get_user(code, pc);
- printk("%c%08x%c",i?' ':'<',code,i?' ':'>');
- pc++;
- }
- printk("\n");
-}
-#endif
+struct global_reg_snapshot global_reg_snapshot[NR_CPUS];
+static DEFINE_SPINLOCK(global_reg_snapshot_lock);
-void show_regs(struct pt_regs *regs)
+static bool kstack_valid(struct thread_info *tp, struct reg_window *rw)
{
-#ifdef VERBOSE_SHOWREGS
- extern long etrap, etraptl1;
-#endif
- __show_regs(regs);
-#if 0
-#ifdef CONFIG_SMP
- {
- extern void smp_report_regs(void);
+ unsigned long thread_base, fp;
- smp_report_regs();
- }
-#endif
-#endif
+ thread_base = (unsigned long) tp;
+ fp = (unsigned long) rw;
-#ifdef VERBOSE_SHOWREGS
- if (regs->tpc >= &etrap && regs->tpc < &etraptl1 &&
- regs->u_regs[14] >= (long)current - PAGE_SIZE &&
- regs->u_regs[14] < (long)current + 6 * PAGE_SIZE) {
- printk ("*********parent**********\n");
- __show_regs((struct pt_regs *)(regs->u_regs[14] + PTREGS_OFF));
- idump_from_user(((struct pt_regs *)(regs->u_regs[14] + PTREGS_OFF))->tpc);
- printk ("*********endpar**********\n");
- }
-#endif
+ if (fp < (thread_base + sizeof(struct thread_info)) ||
+ fp >= (thread_base + THREAD_SIZE))
+ return false;
+ return true;
}
-#ifdef CONFIG_MAGIC_SYSRQ
-struct global_reg_snapshot global_reg_snapshot[NR_CPUS];
-static DEFINE_SPINLOCK(global_reg_snapshot_lock);
-
static void __global_reg_self(struct thread_info *tp, struct pt_regs *regs,
int this_cpu)
{
@@ -315,14 +259,22 @@ static void __global_reg_self(struct thread_info *tp, struct pt_regs *regs,
global_reg_snapshot[this_cpu].o7 = regs->u_regs[UREG_I7];
if (regs->tstate & TSTATE_PRIV) {
+ struct thread_info *tp = current_thread_info();
struct reg_window *rw;
rw = (struct reg_window *)
(regs->u_regs[UREG_FP] + STACK_BIAS);
- global_reg_snapshot[this_cpu].i7 = rw->ins[6];
- } else
+ if (kstack_valid(tp, rw)) {
+ global_reg_snapshot[this_cpu].i7 = rw->ins[7];
+ rw = (struct reg_window *)
+ (rw->ins[6] + STACK_BIAS);
+ if (kstack_valid(tp, rw))
+ global_reg_snapshot[this_cpu].rpc = rw->ins[7];
+ }
+ } else {
global_reg_snapshot[this_cpu].i7 = 0;
-
+ global_reg_snapshot[this_cpu].rpc = 0;
+ }
global_reg_snapshot[this_cpu].thread = tp;
}
@@ -341,7 +293,7 @@ static void __global_reg_poll(struct global_reg_snapshot *gp)
}
}
-static void sysrq_handle_globreg(int key, struct tty_struct *tty)
+void __trigger_all_cpu_backtrace(void)
{
struct thread_info *tp = current_thread_info();
struct pt_regs *regs = get_irq_regs();
@@ -375,13 +327,14 @@ static void sysrq_handle_globreg(int key, struct tty_struct *tty)
((tp && tp->task) ? tp->task->pid : -1));
if (gp->tstate & TSTATE_PRIV) {
- printk(" TPC[%pS] O7[%pS] I7[%pS]\n",
+ printk(" TPC[%pS] O7[%pS] I7[%pS] RPC[%pS]\n",
(void *) gp->tpc,
(void *) gp->o7,
- (void *) gp->i7);
+ (void *) gp->i7,
+ (void *) gp->rpc);
} else {
- printk(" TPC[%lx] O7[%lx] I7[%lx]\n",
- gp->tpc, gp->o7, gp->i7);
+ printk(" TPC[%lx] O7[%lx] I7[%lx] RPC[%lx]\n",
+ gp->tpc, gp->o7, gp->i7, gp->rpc);
}
}
@@ -390,6 +343,13 @@ static void sysrq_handle_globreg(int key, struct tty_struct *tty)
spin_unlock_irqrestore(&global_reg_snapshot_lock, flags);
}
+#ifdef CONFIG_MAGIC_SYSRQ
+
+static void sysrq_handle_globreg(int key, struct tty_struct *tty)
+{
+ __trigger_all_cpu_backtrace();
+}
+
static struct sysrq_key_op sparc_globalreg_op = {
.handler = sysrq_handle_globreg,
.help_msg = "Globalregs",
diff --git a/arch/sparc64/kernel/ptrace.c b/arch/sparc64/kernel/ptrace.c
index f6c9fc92921d..bd578cc4856d 100644
--- a/arch/sparc64/kernel/ptrace.c
+++ b/arch/sparc64/kernel/ptrace.c
@@ -23,6 +23,7 @@
#include <linux/audit.h>
#include <linux/signal.h>
#include <linux/regset.h>
+#include <linux/tracehook.h>
#include <linux/compat.h>
#include <linux/elf.h>
@@ -1049,8 +1050,10 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
return ret;
}
-asmlinkage void syscall_trace(struct pt_regs *regs, int syscall_exit_p)
+asmlinkage int syscall_trace(struct pt_regs *regs, int syscall_exit_p)
{
+ int ret = 0;
+
/* do the secure computing check first */
secure_computing(regs->u_regs[UREG_G1]);
@@ -1064,27 +1067,14 @@ asmlinkage void syscall_trace(struct pt_regs *regs, int syscall_exit_p)
audit_syscall_exit(result, regs->u_regs[UREG_I0]);
}
- if (!(current->ptrace & PT_PTRACED))
- goto out;
-
- if (!test_thread_flag(TIF_SYSCALL_TRACE))
- goto out;
-
- ptrace_notify(SIGTRAP | ((current->ptrace & PT_TRACESYSGOOD)
- ? 0x80 : 0));
-
- /*
- * this isn't the same as continuing with a signal, but it will do
- * for normal use. strace only continues with a signal if the
- * stopping signal is not SIGTRAP. -brl
- */
- if (current->exit_code) {
- send_sig(current->exit_code, current, 1);
- current->exit_code = 0;
+ if (test_thread_flag(TIF_SYSCALL_TRACE)) {
+ if (syscall_exit_p)
+ tracehook_report_syscall_exit(regs, 0);
+ else
+ ret = tracehook_report_syscall_entry(regs);
}
-out:
- if (unlikely(current->audit_context) && !syscall_exit_p)
+ if (unlikely(current->audit_context) && !syscall_exit_p && !ret)
audit_syscall_entry((test_thread_flag(TIF_32BIT) ?
AUDIT_ARCH_SPARC :
AUDIT_ARCH_SPARC64),
@@ -1093,4 +1083,6 @@ out:
regs->u_regs[UREG_I1],
regs->u_regs[UREG_I2],
regs->u_regs[UREG_I3]);
+
+ return ret;
}
diff --git a/arch/sparc64/kernel/rtrap.S b/arch/sparc64/kernel/rtrap.S
index c6fc695fe1fe..97a993c1f7f3 100644
--- a/arch/sparc64/kernel/rtrap.S
+++ b/arch/sparc64/kernel/rtrap.S
@@ -46,7 +46,7 @@ __handle_user_windows:
wrpr %g0, RTRAP_PSTATE_IRQOFF, %pstate
ldx [%g6 + TI_FLAGS], %l0
-1: andcc %l0, _TIF_SIGPENDING, %g0
+1: andcc %l0, _TIF_DO_NOTIFY_RESUME_MASK, %g0
be,pt %xcc, __handle_user_windows_continue
nop
mov %l5, %o1
@@ -86,7 +86,7 @@ __handle_perfctrs:
wrpr %g0, RTRAP_PSTATE, %pstate
wrpr %g0, RTRAP_PSTATE_IRQOFF, %pstate
ldx [%g6 + TI_FLAGS], %l0
-1: andcc %l0, _TIF_SIGPENDING, %g0
+1: andcc %l0, _TIF_DO_NOTIFY_RESUME_MASK, %g0
be,pt %xcc, __handle_perfctrs_continue
sethi %hi(TSTATE_PEF), %o0
@@ -195,7 +195,7 @@ __handle_preemption_continue:
andcc %l1, %o0, %g0
andcc %l0, _TIF_NEED_RESCHED, %g0
bne,pn %xcc, __handle_preemption
- andcc %l0, _TIF_SIGPENDING, %g0
+ andcc %l0, _TIF_DO_NOTIFY_RESUME_MASK, %g0
bne,pn %xcc, __handle_signal
__handle_signal_continue:
ldub [%g6 + TI_WSAVED], %o2
diff --git a/arch/sparc64/kernel/signal.c b/arch/sparc64/kernel/signal.c
index 9667e96fd513..ec82d76dc6f2 100644
--- a/arch/sparc64/kernel/signal.c
+++ b/arch/sparc64/kernel/signal.c
@@ -2,7 +2,7 @@
* arch/sparc64/kernel/signal.c
*
* Copyright (C) 1991, 1992 Linus Torvalds
- * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
+ * Copyright (C) 1995, 2008 David S. Miller (davem@davemloft.net)
* Copyright (C) 1996 Miguel de Icaza (miguel@nuclecu.unam.mx)
* Copyright (C) 1997 Eddie C. Dost (ecd@skynet.be)
* Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
@@ -17,6 +17,7 @@
#include <linux/errno.h>
#include <linux/wait.h>
#include <linux/ptrace.h>
+#include <linux/tracehook.h>
#include <linux/unistd.h>
#include <linux/mm.h>
#include <linux/tty.h>
@@ -89,7 +90,9 @@ asmlinkage void sparc64_set_context(struct pt_regs *regs)
err |= __get_user(regs->u_regs[UREG_G4], (&(*grp)[MC_G4]));
err |= __get_user(regs->u_regs[UREG_G5], (&(*grp)[MC_G5]));
err |= __get_user(regs->u_regs[UREG_G6], (&(*grp)[MC_G6]));
- err |= __get_user(regs->u_regs[UREG_G7], (&(*grp)[MC_G7]));
+
+ /* Skip %g7 as that's the thread register in userspace. */
+
err |= __get_user(regs->u_regs[UREG_I0], (&(*grp)[MC_O0]));
err |= __get_user(regs->u_regs[UREG_I1], (&(*grp)[MC_O1]));
err |= __get_user(regs->u_regs[UREG_I2], (&(*grp)[MC_O2]));
@@ -574,6 +577,8 @@ static void do_signal(struct pt_regs *regs, unsigned long orig_i0)
* clear the TS_RESTORE_SIGMASK flag.
*/
current_thread_info()->status &= ~TS_RESTORE_SIGMASK;
+
+ tracehook_signal_handler(signr, &info, &ka, regs, 0);
return;
}
if (restart_syscall &&
@@ -605,4 +610,8 @@ void do_notify_resume(struct pt_regs *regs, unsigned long orig_i0, unsigned long
{
if (thread_info_flags & _TIF_SIGPENDING)
do_signal(regs, orig_i0);
+ if (thread_info_flags & _TIF_NOTIFY_RESUME) {
+ clear_thread_flag(TIF_NOTIFY_RESUME);
+ tracehook_notify_resume(regs);
+ }
}
diff --git a/arch/sparc64/kernel/signal32.c b/arch/sparc64/kernel/signal32.c
index 97cdd1bf4a10..ba5b09ad6666 100644
--- a/arch/sparc64/kernel/signal32.c
+++ b/arch/sparc64/kernel/signal32.c
@@ -19,6 +19,7 @@
#include <linux/binfmts.h>
#include <linux/compat.h>
#include <linux/bitops.h>
+#include <linux/tracehook.h>
#include <asm/uaccess.h>
#include <asm/ptrace.h>
@@ -794,6 +795,8 @@ void do_signal32(sigset_t *oldset, struct pt_regs * regs,
* clear the TS_RESTORE_SIGMASK flag.
*/
current_thread_info()->status &= ~TS_RESTORE_SIGMASK;
+
+ tracehook_signal_handler(signr, &info, &ka, regs, 0);
return;
}
if (restart_syscall &&
diff --git a/arch/sparc64/kernel/smp.c b/arch/sparc64/kernel/smp.c
index 7cf72b4bb108..27b81775a4de 100644
--- a/arch/sparc64/kernel/smp.c
+++ b/arch/sparc64/kernel/smp.c
@@ -459,27 +459,35 @@ again:
}
}
-static inline void spitfire_xcall_deliver(u64 data0, u64 data1, u64 data2, cpumask_t mask)
+static void spitfire_xcall_deliver(struct trap_per_cpu *tb, int cnt)
{
+ u64 *mondo, data0, data1, data2;
+ u16 *cpu_list;
u64 pstate;
int i;
__asm__ __volatile__("rdpr %%pstate, %0" : "=r" (pstate));
- for_each_cpu_mask(i, mask)
- spitfire_xcall_helper(data0, data1, data2, pstate, i);
+ cpu_list = __va(tb->cpu_list_pa);
+ mondo = __va(tb->cpu_mondo_block_pa);
+ data0 = mondo[0];
+ data1 = mondo[1];
+ data2 = mondo[2];
+ for (i = 0; i < cnt; i++)
+ spitfire_xcall_helper(data0, data1, data2, pstate, cpu_list[i]);
}
/* Cheetah now allows to send the whole 64-bytes of data in the interrupt
* packet, but we have no use for that. However we do take advantage of
* the new pipelining feature (ie. dispatch to multiple cpus simultaneously).
*/
-static void cheetah_xcall_deliver(u64 data0, u64 data1, u64 data2, cpumask_t mask)
+static void cheetah_xcall_deliver(struct trap_per_cpu *tb, int cnt)
{
- u64 pstate, ver, busy_mask;
int nack_busy_id, is_jbus, need_more;
+ u64 *mondo, pstate, ver, busy_mask;
+ u16 *cpu_list;
- if (cpus_empty(mask))
- return;
+ cpu_list = __va(tb->cpu_list_pa);
+ mondo = __va(tb->cpu_mondo_block_pa);
/* Unfortunately, someone at Sun had the brilliant idea to make the
* busy/nack fields hard-coded by ITID number for this Ultra-III
@@ -502,7 +510,7 @@ retry:
"stxa %2, [%5] %6\n\t"
"membar #Sync\n\t"
: /* no outputs */
- : "r" (data0), "r" (data1), "r" (data2),
+ : "r" (mondo[0]), "r" (mondo[1]), "r" (mondo[2]),
"r" (0x40), "r" (0x50), "r" (0x60),
"i" (ASI_INTR_W));
@@ -511,11 +519,16 @@ retry:
{
int i;
- for_each_cpu_mask(i, mask) {
- u64 target = (i << 14) | 0x70;
+ for (i = 0; i < cnt; i++) {
+ u64 target, nr;
+ nr = cpu_list[i];
+ if (nr == 0xffff)
+ continue;
+
+ target = (nr << 14) | 0x70;
if (is_jbus) {
- busy_mask |= (0x1UL << (i * 2));
+ busy_mask |= (0x1UL << (nr * 2));
} else {
target |= (nack_busy_id << 24);
busy_mask |= (0x1UL <<
@@ -549,11 +562,13 @@ retry:
__asm__ __volatile__("wrpr %0, 0x0, %%pstate"
: : "r" (pstate));
if (unlikely(need_more)) {
- int i, cnt = 0;
- for_each_cpu_mask(i, mask) {
- cpu_clear(i, mask);
- cnt++;
- if (cnt == 32)
+ int i, this_cnt = 0;
+ for (i = 0; i < cnt; i++) {
+ if (cpu_list[i] == 0xffff)
+ continue;
+ cpu_list[i] = 0xffff;
+ this_cnt++;
+ if (this_cnt == 32)
break;
}
goto retry;
@@ -584,16 +599,20 @@ retry:
/* Clear out the mask bits for cpus which did not
* NACK us.
*/
- for_each_cpu_mask(i, mask) {
- u64 check_mask;
+ for (i = 0; i < cnt; i++) {
+ u64 check_mask, nr;
+
+ nr = cpu_list[i];
+ if (nr == 0xffff)
+ continue;
if (is_jbus)
- check_mask = (0x2UL << (2*i));
+ check_mask = (0x2UL << (2*nr));
else
check_mask = (0x2UL <<
this_busy_nack);
if ((dispatch_stat & check_mask) == 0)
- cpu_clear(i, mask);
+ cpu_list[i] = 0xffff;
this_busy_nack += 2;
if (this_busy_nack == 64)
break;
@@ -605,47 +624,17 @@ retry:
}
/* Multi-cpu list version. */
-static void hypervisor_xcall_deliver(u64 data0, u64 data1, u64 data2, cpumask_t mask)
+static void hypervisor_xcall_deliver(struct trap_per_cpu *tb, int cnt)
{
- struct trap_per_cpu *tb;
+ int retries, this_cpu, prev_sent, i, saw_cpu_error;
+ unsigned long status;
u16 *cpu_list;
- u64 *mondo;
- cpumask_t error_mask;
- unsigned long flags, status;
- int cnt, retries, this_cpu, prev_sent, i;
-
- if (cpus_empty(mask))
- return;
-
- /* We have to do this whole thing with interrupts fully disabled.
- * Otherwise if we send an xcall from interrupt context it will
- * corrupt both our mondo block and cpu list state.
- *
- * One consequence of this is that we cannot use timeout mechanisms
- * that depend upon interrupts being delivered locally. So, for
- * example, we cannot sample jiffies and expect it to advance.
- *
- * Fortunately, udelay() uses %stick/%tick so we can use that.
- */
- local_irq_save(flags);
this_cpu = smp_processor_id();
- tb = &trap_block[this_cpu];
-
- mondo = __va(tb->cpu_mondo_block_pa);
- mondo[0] = data0;
- mondo[1] = data1;
- mondo[2] = data2;
- wmb();
cpu_list = __va(tb->cpu_list_pa);
- /* Setup the initial cpu list. */
- cnt = 0;
- for_each_cpu_mask(i, mask)
- cpu_list[cnt++] = i;
-
- cpus_clear(error_mask);
+ saw_cpu_error = 0;
retries = 0;
prev_sent = 0;
do {
@@ -690,10 +679,9 @@ static void hypervisor_xcall_deliver(u64 data0, u64 data1, u64 data2, cpumask_t
continue;
err = sun4v_cpu_state(cpu);
- if (err >= 0 &&
- err == HV_CPU_STATE_ERROR) {
+ if (err == HV_CPU_STATE_ERROR) {
+ saw_cpu_error = (cpu + 1);
cpu_list[i] = 0xffff;
- cpu_set(cpu, error_mask);
}
}
} else if (unlikely(status != HV_EWOULDBLOCK))
@@ -717,32 +705,24 @@ static void hypervisor_xcall_deliver(u64 data0, u64 data1, u64 data2, cpumask_t
}
} while (1);
- local_irq_restore(flags);
-
- if (unlikely(!cpus_empty(error_mask)))
+ if (unlikely(saw_cpu_error))
goto fatal_mondo_cpu_error;
return;
fatal_mondo_cpu_error:
printk(KERN_CRIT "CPU[%d]: SUN4V mondo cpu error, some target cpus "
- "were in error state\n",
- this_cpu);
- printk(KERN_CRIT "CPU[%d]: Error mask [ ", this_cpu);
- for_each_cpu_mask(i, error_mask)
- printk("%d ", i);
- printk("]\n");
+ "(including %d) were in error state\n",
+ this_cpu, saw_cpu_error - 1);
return;
fatal_mondo_timeout:
- local_irq_restore(flags);
printk(KERN_CRIT "CPU[%d]: SUN4V mondo timeout, no forward "
" progress after %d retries.\n",
this_cpu, retries);
goto dump_cpu_list_and_out;
fatal_mondo_error:
- local_irq_restore(flags);
printk(KERN_CRIT "CPU[%d]: Unexpected SUN4V mondo error %lu\n",
this_cpu, status);
printk(KERN_CRIT "CPU[%d]: Args were cnt(%d) cpulist_pa(%lx) "
@@ -756,58 +736,93 @@ dump_cpu_list_and_out:
printk("]\n");
}
-/* Send cross call to all processors mentioned in MASK
- * except self.
+static void (*xcall_deliver_impl)(struct trap_per_cpu *, int);
+
+static void xcall_deliver(u64 data0, u64 data1, u64 data2, const cpumask_t *mask)
+{
+ struct trap_per_cpu *tb;
+ int this_cpu, i, cnt;
+ unsigned long flags;
+ u16 *cpu_list;
+ u64 *mondo;
+
+ /* We have to do this whole thing with interrupts fully disabled.
+ * Otherwise if we send an xcall from interrupt context it will
+ * corrupt both our mondo block and cpu list state.
+ *
+ * One consequence of this is that we cannot use timeout mechanisms
+ * that depend upon interrupts being delivered locally. So, for
+ * example, we cannot sample jiffies and expect it to advance.
+ *
+ * Fortunately, udelay() uses %stick/%tick so we can use that.
+ */
+ local_irq_save(flags);
+
+ this_cpu = smp_processor_id();
+ tb = &trap_block[this_cpu];
+
+ mondo = __va(tb->cpu_mondo_block_pa);
+ mondo[0] = data0;
+ mondo[1] = data1;
+ mondo[2] = data2;
+ wmb();
+
+ cpu_list = __va(tb->cpu_list_pa);
+
+ /* Setup the initial cpu list. */
+ cnt = 0;
+ for_each_cpu_mask_nr(i, *mask) {
+ if (i == this_cpu || !cpu_online(i))
+ continue;
+ cpu_list[cnt++] = i;
+ }
+
+ if (cnt)
+ xcall_deliver_impl(tb, cnt);
+
+ local_irq_restore(flags);
+}
+
+/* Send cross call to all processors mentioned in MASK_P
+ * except self. Really, there are only two cases currently,
+ * "&cpu_online_map" and "&mm->cpu_vm_mask".
*/
-static void smp_cross_call_masked(unsigned long *func, u32 ctx, u64 data1, u64 data2, cpumask_t mask)
+static void smp_cross_call_masked(unsigned long *func, u32 ctx, u64 data1, u64 data2, const cpumask_t *mask)
{
u64 data0 = (((u64)ctx)<<32 | (((u64)func) & 0xffffffff));
- int this_cpu = get_cpu();
-
- cpus_and(mask, mask, cpu_online_map);
- cpu_clear(this_cpu, mask);
- if (tlb_type == spitfire)
- spitfire_xcall_deliver(data0, data1, data2, mask);
- else if (tlb_type == cheetah || tlb_type == cheetah_plus)
- cheetah_xcall_deliver(data0, data1, data2, mask);
- else
- hypervisor_xcall_deliver(data0, data1, data2, mask);
- /* NOTE: Caller runs local copy on master. */
+ xcall_deliver(data0, data1, data2, mask);
+}
- put_cpu();
+/* Send cross call to all processors except self. */
+static void smp_cross_call(unsigned long *func, u32 ctx, u64 data1, u64 data2)
+{
+ smp_cross_call_masked(func, ctx, data1, data2, &cpu_online_map);
}
extern unsigned long xcall_sync_tick;
static void smp_start_sync_tick_client(int cpu)
{
- cpumask_t mask = cpumask_of_cpu(cpu);
-
- smp_cross_call_masked(&xcall_sync_tick,
- 0, 0, 0, mask);
+ xcall_deliver((u64) &xcall_sync_tick, 0, 0,
+ &cpumask_of_cpu(cpu));
}
extern unsigned long xcall_call_function;
void arch_send_call_function_ipi(cpumask_t mask)
{
- smp_cross_call_masked(&xcall_call_function, 0, 0, 0, mask);
+ xcall_deliver((u64) &xcall_call_function, 0, 0, &mask);
}
extern unsigned long xcall_call_function_single;
void arch_send_call_function_single_ipi(int cpu)
{
- cpumask_t mask = cpumask_of_cpu(cpu);
-
- smp_cross_call_masked(&xcall_call_function_single, 0, 0, 0, mask);
+ xcall_deliver((u64) &xcall_call_function_single, 0, 0,
+ &cpumask_of_cpu(cpu));
}
-/* Send cross call to all processors except self. */
-#define smp_cross_call(func, ctx, data1, data2) \
- smp_cross_call_masked(func, ctx, data1, data2, cpu_online_map)
-
void smp_call_function_client(int irq, struct pt_regs *regs)
{
clear_softint(1 << irq);
@@ -843,7 +858,6 @@ void smp_tsb_sync(struct mm_struct *mm)
extern unsigned long xcall_flush_tlb_mm;
extern unsigned long xcall_flush_tlb_pending;
extern unsigned long xcall_flush_tlb_kernel_range;
-extern unsigned long xcall_report_regs;
#ifdef CONFIG_MAGIC_SYSRQ
extern unsigned long xcall_fetch_glob_regs;
#endif
@@ -878,7 +892,6 @@ static inline void __local_flush_dcache_page(struct page *page)
void smp_flush_dcache_page_impl(struct page *page, int cpu)
{
- cpumask_t mask = cpumask_of_cpu(cpu);
int this_cpu;
if (tlb_type == hypervisor)
@@ -894,29 +907,24 @@ void smp_flush_dcache_page_impl(struct page *page, int cpu)
__local_flush_dcache_page(page);
} else if (cpu_online(cpu)) {
void *pg_addr = page_address(page);
- u64 data0;
+ u64 data0 = 0;
if (tlb_type == spitfire) {
- data0 =
- ((u64)&xcall_flush_dcache_page_spitfire);
+ data0 = ((u64)&xcall_flush_dcache_page_spitfire);
if (page_mapping(page) != NULL)
data0 |= ((u64)1 << 32);
- spitfire_xcall_deliver(data0,
- __pa(pg_addr),
- (u64) pg_addr,
- mask);
} else if (tlb_type == cheetah || tlb_type == cheetah_plus) {
#ifdef DCACHE_ALIASING_POSSIBLE
- data0 =
- ((u64)&xcall_flush_dcache_page_cheetah);
- cheetah_xcall_deliver(data0,
- __pa(pg_addr),
- 0, mask);
+ data0 = ((u64)&xcall_flush_dcache_page_cheetah);
#endif
}
+ if (data0) {
+ xcall_deliver(data0, __pa(pg_addr),
+ (u64) pg_addr, &cpumask_of_cpu(cpu));
#ifdef CONFIG_DEBUG_DCFLUSH
- atomic_inc(&dcpage_flushes_xcall);
+ atomic_inc(&dcpage_flushes_xcall);
#endif
+ }
}
put_cpu();
@@ -924,66 +932,41 @@ void smp_flush_dcache_page_impl(struct page *page, int cpu)
void flush_dcache_page_all(struct mm_struct *mm, struct page *page)
{
- void *pg_addr = page_address(page);
- cpumask_t mask = cpu_online_map;
- u64 data0;
+ void *pg_addr;
int this_cpu;
+ u64 data0;
if (tlb_type == hypervisor)
return;
this_cpu = get_cpu();
- cpu_clear(this_cpu, mask);
-
#ifdef CONFIG_DEBUG_DCFLUSH
atomic_inc(&dcpage_flushes);
#endif
- if (cpus_empty(mask))
- goto flush_self;
+ data0 = 0;
+ pg_addr = page_address(page);
if (tlb_type == spitfire) {
data0 = ((u64)&xcall_flush_dcache_page_spitfire);
if (page_mapping(page) != NULL)
data0 |= ((u64)1 << 32);
- spitfire_xcall_deliver(data0,
- __pa(pg_addr),
- (u64) pg_addr,
- mask);
} else if (tlb_type == cheetah || tlb_type == cheetah_plus) {
#ifdef DCACHE_ALIASING_POSSIBLE
data0 = ((u64)&xcall_flush_dcache_page_cheetah);
- cheetah_xcall_deliver(data0,
- __pa(pg_addr),
- 0, mask);
#endif
}
+ if (data0) {
+ xcall_deliver(data0, __pa(pg_addr),
+ (u64) pg_addr, &cpu_online_map);
#ifdef CONFIG_DEBUG_DCFLUSH
- atomic_inc(&dcpage_flushes_xcall);
+ atomic_inc(&dcpage_flushes_xcall);
#endif
- flush_self:
+ }
__local_flush_dcache_page(page);
put_cpu();
}
-static void __smp_receive_signal_mask(cpumask_t mask)
-{
- smp_cross_call_masked(&xcall_receive_signal, 0, 0, 0, mask);
-}
-
-void smp_receive_signal(int cpu)
-{
- cpumask_t mask = cpumask_of_cpu(cpu);
-
- if (cpu_online(cpu))
- __smp_receive_signal_mask(mask);
-}
-
-void smp_receive_signal_client(int irq, struct pt_regs *regs)
-{
- clear_softint(1 << irq);
-}
-
void smp_new_mmu_context_version_client(int irq, struct pt_regs *regs)
{
struct mm_struct *mm;
@@ -1022,11 +1005,6 @@ void kgdb_roundup_cpus(unsigned long flags)
}
#endif
-void smp_report_regs(void)
-{
- smp_cross_call(&xcall_report_regs, 0, 0, 0);
-}
-
#ifdef CONFIG_MAGIC_SYSRQ
void smp_fetch_global_regs(void)
{
@@ -1089,7 +1067,7 @@ void smp_flush_tlb_mm(struct mm_struct *mm)
smp_cross_call_masked(&xcall_flush_tlb_mm,
ctx, 0, 0,
- mm->cpu_vm_mask);
+ &mm->cpu_vm_mask);
local_flush_and_out:
__flush_tlb_mm(ctx, SECONDARY_CONTEXT);
@@ -1107,7 +1085,7 @@ void smp_flush_tlb_pending(struct mm_struct *mm, unsigned long nr, unsigned long
else
smp_cross_call_masked(&xcall_flush_tlb_pending,
ctx, nr, (unsigned long) vaddrs,
- mm->cpu_vm_mask);
+ &mm->cpu_vm_mask);
__flush_tlb_pending(ctx, nr, vaddrs);
@@ -1208,6 +1186,16 @@ void __devinit smp_prepare_boot_cpu(void)
{
}
+void __init smp_setup_processor_id(void)
+{
+ if (tlb_type == spitfire)
+ xcall_deliver_impl = spitfire_xcall_deliver;
+ else if (tlb_type == cheetah || tlb_type == cheetah_plus)
+ xcall_deliver_impl = cheetah_xcall_deliver;
+ else
+ xcall_deliver_impl = hypervisor_xcall_deliver;
+}
+
void __devinit smp_fill_in_sib_core_maps(void)
{
unsigned int i;
@@ -1376,7 +1364,13 @@ void __init smp_cpus_done(unsigned int max_cpus)
void smp_send_reschedule(int cpu)
{
- smp_receive_signal(cpu);
+ xcall_deliver((u64) &xcall_receive_signal, 0, 0,
+ &cpumask_of_cpu(cpu));
+}
+
+void smp_receive_signal_client(int irq, struct pt_regs *regs)
+{
+ clear_softint(1 << irq);
}
/* This is a nop because we capture all other cpus
diff --git a/arch/sparc64/kernel/sparc64_ksyms.c b/arch/sparc64/kernel/sparc64_ksyms.c
index 504e678ee128..0804f71df6cb 100644
--- a/arch/sparc64/kernel/sparc64_ksyms.c
+++ b/arch/sparc64/kernel/sparc64_ksyms.c
@@ -68,7 +68,6 @@ extern void *__memscan_zero(void *, size_t);
extern void *__memscan_generic(void *, int, size_t);
extern int __memcmp(const void *, const void *, __kernel_size_t);
extern __kernel_size_t strlen(const char *);
-extern void show_regs(struct pt_regs *);
extern void syscall_trace(struct pt_regs *, int);
extern void sys_sigsuspend(void);
extern int compat_sys_ioctl(unsigned int fd, unsigned int cmd, u32 arg);
diff --git a/arch/sparc64/kernel/syscalls.S b/arch/sparc64/kernel/syscalls.S
index db19ed67acf6..a2f24270ed8a 100644
--- a/arch/sparc64/kernel/syscalls.S
+++ b/arch/sparc64/kernel/syscalls.S
@@ -162,6 +162,8 @@ linux_syscall_trace32:
add %sp, PTREGS_OFF, %o0
call syscall_trace
clr %o1
+ brnz,pn %o0, 3f
+ mov -ENOSYS, %o0
srl %i0, 0, %o0
srl %i4, 0, %o4
srl %i1, 0, %o1
@@ -173,6 +175,8 @@ linux_syscall_trace:
add %sp, PTREGS_OFF, %o0
call syscall_trace
clr %o1
+ brnz,pn %o0, 3f
+ mov -ENOSYS, %o0
mov %i0, %o0
mov %i1, %o1
mov %i2, %o2
diff --git a/arch/sparc64/kernel/traps.c b/arch/sparc64/kernel/traps.c
index bd30ecba5630..404e8561e2d0 100644
--- a/arch/sparc64/kernel/traps.c
+++ b/arch/sparc64/kernel/traps.c
@@ -1777,7 +1777,7 @@ static void sun4v_log_error(struct pt_regs *regs, struct sun4v_error_entry *ent,
pfx,
ent->err_raddr, ent->err_size, ent->err_cpu);
- __show_regs(regs);
+ show_regs(regs);
if ((cnt = atomic_read(ocnt)) != 0) {
atomic_set(ocnt, 0);
@@ -2177,7 +2177,6 @@ static inline struct reg_window *kernel_stack_up(struct reg_window *rw)
void die_if_kernel(char *str, struct pt_regs *regs)
{
static int die_counter;
- extern void smp_report_regs(void);
int count = 0;
/* Amuse the user. */
@@ -2190,7 +2189,7 @@ void die_if_kernel(char *str, struct pt_regs *regs)
printk("%s(%d): %s [#%d]\n", current->comm, task_pid_nr(current), str, ++die_counter);
notify_die(DIE_OOPS, str, regs, 0, 255, SIGSEGV);
__asm__ __volatile__("flushw");
- __show_regs(regs);
+ show_regs(regs);
add_taint(TAINT_DIE);
if (regs->tstate & TSTATE_PRIV) {
struct reg_window *rw = (struct reg_window *)
@@ -2215,11 +2214,6 @@ void die_if_kernel(char *str, struct pt_regs *regs)
}
user_instruction_dump ((unsigned int __user *) regs->tpc);
}
-#if 0
-#ifdef CONFIG_SMP
- smp_report_regs();
-#endif
-#endif
if (regs->tstate & TSTATE_PRIV)
do_exit(SIGKILL);
do_exit(SIGSEGV);
diff --git a/arch/sparc64/mm/tsb.c b/arch/sparc64/mm/tsb.c
index 3547937b17a2..587f8efb2e05 100644
--- a/arch/sparc64/mm/tsb.c
+++ b/arch/sparc64/mm/tsb.c
@@ -1,9 +1,10 @@
/* arch/sparc64/mm/tsb.c
*
- * Copyright (C) 2006 David S. Miller <davem@davemloft.net>
+ * Copyright (C) 2006, 2008 David S. Miller <davem@davemloft.net>
*/
#include <linux/kernel.h>
+#include <linux/preempt.h>
#include <asm/system.h>
#include <asm/page.h>
#include <asm/tlbflush.h>
@@ -415,7 +416,9 @@ retry_tsb_alloc:
tsb_context_switch(mm);
/* Now force other processors to do the same. */
+ preempt_disable();
smp_tsb_sync(mm);
+ preempt_enable();
/* Now it is safe to free the old tsb. */
kmem_cache_free(tsb_caches[old_cache_index], old_tsb);
diff --git a/arch/sparc64/mm/ultra.S b/arch/sparc64/mm/ultra.S
index 4c8ca131ffaf..ff1dc44d363e 100644
--- a/arch/sparc64/mm/ultra.S
+++ b/arch/sparc64/mm/ultra.S
@@ -480,41 +480,6 @@ xcall_sync_tick:
b rtrap_xcall
ldx [%sp + PTREGS_OFF + PT_V9_TSTATE], %l1
- /* NOTE: This is SPECIAL!! We do etrap/rtrap however
- * we choose to deal with the "BH's run with
- * %pil==15" problem (described in asm/pil.h)
- * by just invoking rtrap directly past where
- * BH's are checked for.
- *
- * We do it like this because we do not want %pil==15
- * lockups to prevent regs being reported.
- */
- .globl xcall_report_regs
-xcall_report_regs:
-
-661: rdpr %pstate, %g2
- wrpr %g2, PSTATE_IG | PSTATE_AG, %pstate
- .section .sun4v_2insn_patch, "ax"
- .word 661b
- nop
- nop
- .previous
-
- rdpr %pil, %g2
- wrpr %g0, 15, %pil
- 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
- /* Has to be a non-v9 branch due to the large distance. */
- b rtrap_xcall
- ldx [%sp + PTREGS_OFF + PT_V9_TSTATE], %l1
-
#ifdef CONFIG_MAGIC_SYSRQ
.globl xcall_fetch_glob_regs
xcall_fetch_glob_regs:
@@ -531,6 +496,13 @@ xcall_fetch_glob_regs:
stx %g7, [%g1 + GR_SNAP_TNPC]
stx %o7, [%g1 + GR_SNAP_O7]
stx %i7, [%g1 + GR_SNAP_I7]
+ /* Don't try this at home kids... */
+ rdpr %cwp, %g2
+ sub %g2, 1, %g7
+ wrpr %g7, %cwp
+ mov %i7, %g7
+ wrpr %g2, %cwp
+ stx %g7, [%g1 + GR_SNAP_RPC]
sethi %hi(trap_block), %g7
or %g7, %lo(trap_block), %g7
sllx %g2, TRAP_BLOCK_SZ_SHIFT, %g2
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.