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-rw-r--r--arch/sparc/kernel/Makefile10
-rw-r--r--arch/sparc/kernel/central.c1
-rw-r--r--arch/sparc/kernel/cpumap.c1
-rw-r--r--arch/sparc/kernel/ftrace.c60
-rw-r--r--arch/sparc/kernel/helpers.S75
-rw-r--r--arch/sparc/kernel/hvapi.c1
-rw-r--r--arch/sparc/kernel/iommu.c1
-rw-r--r--arch/sparc/kernel/irq_64.c31
-rw-r--r--arch/sparc/kernel/kgdb_64.c3
-rw-r--r--arch/sparc/kernel/kprobes.c1
-rw-r--r--arch/sparc/kernel/kstack.h19
-rw-r--r--arch/sparc/kernel/led.c1
-rw-r--r--arch/sparc/kernel/leon_kernel.c1
-rw-r--r--arch/sparc/kernel/leon_smp.c1
-rw-r--r--arch/sparc/kernel/module.c2
-rw-r--r--arch/sparc/kernel/nmi.c10
-rw-r--r--arch/sparc/kernel/of_device_common.c1
-rw-r--r--arch/sparc/kernel/pci_common.c11
-rw-r--r--arch/sparc/kernel/pci_msi.c1
-rw-r--r--arch/sparc/kernel/pcr.c3
-rw-r--r--arch/sparc/kernel/perf_event.c4
-rw-r--r--arch/sparc/kernel/process_32.c2
-rw-r--r--arch/sparc/kernel/ptrace_32.c4
-rw-r--r--arch/sparc/kernel/ptrace_64.c4
-rw-r--r--arch/sparc/kernel/rtrap_64.S12
-rw-r--r--arch/sparc/kernel/setup_64.c1
-rw-r--r--arch/sparc/kernel/smp_64.c12
-rw-r--r--arch/sparc/kernel/sun4c_irq.c1
-rw-r--r--arch/sparc/kernel/sun4m_irq.c1
-rw-r--r--arch/sparc/kernel/sys_sparc32.c2
-rw-r--r--arch/sparc/kernel/sysfs.c4
-rw-r--r--arch/sparc/kernel/time_64.c4
-rw-r--r--arch/sparc/kernel/traps_64.c27
-rw-r--r--arch/sparc/kernel/unaligned_64.c6
-rw-r--r--arch/sparc/kernel/us2e_cpufreq.c8
-rw-r--r--arch/sparc/kernel/us3_cpufreq.c8
-rw-r--r--arch/sparc/kernel/vio.c1
-rw-r--r--arch/sparc/kernel/vmlinux.lds.S5
38 files changed, 258 insertions, 82 deletions
diff --git a/arch/sparc/kernel/Makefile b/arch/sparc/kernel/Makefile
index c6316142db4e..0c2dc1f24a9a 100644
--- a/arch/sparc/kernel/Makefile
+++ b/arch/sparc/kernel/Makefile
@@ -13,6 +13,14 @@ extra-y += init_task.o
CPPFLAGS_vmlinux.lds := -Usparc -m$(BITS)
extra-y += vmlinux.lds
+ifdef CONFIG_FUNCTION_TRACER
+# Do not profile debug and lowlevel utilities
+CFLAGS_REMOVE_ftrace.o := -pg
+CFLAGS_REMOVE_time_$(BITS).o := -pg
+CFLAGS_REMOVE_perf_event.o := -pg
+CFLAGS_REMOVE_pcr.o := -pg
+endif
+
obj-$(CONFIG_SPARC32) += entry.o wof.o wuf.o
obj-$(CONFIG_SPARC32) += etrap_32.o
obj-$(CONFIG_SPARC32) += rtrap_32.o
@@ -85,7 +93,7 @@ obj-$(CONFIG_KGDB) += kgdb_$(BITS).o
obj-$(CONFIG_DYNAMIC_FTRACE) += ftrace.o
-CFLAGS_REMOVE_ftrace.o := -pg
+obj-$(CONFIG_FUNCTION_GRAPH_TRACER) += ftrace.o
obj-$(CONFIG_EARLYFB) += btext.o
obj-$(CONFIG_STACKTRACE) += stacktrace.o
diff --git a/arch/sparc/kernel/central.c b/arch/sparc/kernel/central.c
index 4589ca33220f..415c86d5a8da 100644
--- a/arch/sparc/kernel/central.c
+++ b/arch/sparc/kernel/central.c
@@ -5,6 +5,7 @@
#include <linux/kernel.h>
#include <linux/types.h>
+#include <linux/slab.h>
#include <linux/string.h>
#include <linux/init.h>
#include <linux/of_device.h>
diff --git a/arch/sparc/kernel/cpumap.c b/arch/sparc/kernel/cpumap.c
index 7430ed080b23..8de64c8126bc 100644
--- a/arch/sparc/kernel/cpumap.c
+++ b/arch/sparc/kernel/cpumap.c
@@ -4,6 +4,7 @@
*/
#include <linux/module.h>
+#include <linux/slab.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/cpumask.h>
diff --git a/arch/sparc/kernel/ftrace.c b/arch/sparc/kernel/ftrace.c
index 9103a56b39e8..03ab022e51c5 100644
--- a/arch/sparc/kernel/ftrace.c
+++ b/arch/sparc/kernel/ftrace.c
@@ -13,7 +13,7 @@ static const u32 ftrace_nop = 0x01000000;
static u32 ftrace_call_replace(unsigned long ip, unsigned long addr)
{
- static u32 call;
+ u32 call;
s32 off;
off = ((s32)addr - (s32)ip);
@@ -91,3 +91,61 @@ int __init ftrace_dyn_arch_init(void *data)
return 0;
}
#endif
+
+#ifdef CONFIG_FUNCTION_GRAPH_TRACER
+
+#ifdef CONFIG_DYNAMIC_FTRACE
+extern void ftrace_graph_call(void);
+
+int ftrace_enable_ftrace_graph_caller(void)
+{
+ unsigned long ip = (unsigned long)(&ftrace_graph_call);
+ u32 old, new;
+
+ old = *(u32 *) &ftrace_graph_call;
+ new = ftrace_call_replace(ip, (unsigned long) &ftrace_graph_caller);
+ return ftrace_modify_code(ip, old, new);
+}
+
+int ftrace_disable_ftrace_graph_caller(void)
+{
+ unsigned long ip = (unsigned long)(&ftrace_graph_call);
+ u32 old, new;
+
+ old = *(u32 *) &ftrace_graph_call;
+ new = ftrace_call_replace(ip, (unsigned long) &ftrace_stub);
+
+ return ftrace_modify_code(ip, old, new);
+}
+
+#endif /* !CONFIG_DYNAMIC_FTRACE */
+
+/*
+ * Hook the return address and push it in the stack of return addrs
+ * in current thread info.
+ */
+unsigned long prepare_ftrace_return(unsigned long parent,
+ unsigned long self_addr,
+ unsigned long frame_pointer)
+{
+ unsigned long return_hooker = (unsigned long) &return_to_handler;
+ struct ftrace_graph_ent trace;
+
+ if (unlikely(atomic_read(&current->tracing_graph_pause)))
+ return parent + 8UL;
+
+ if (ftrace_push_return_trace(parent, self_addr, &trace.depth,
+ frame_pointer) == -EBUSY)
+ return parent + 8UL;
+
+ trace.func = self_addr;
+
+ /* Only trace if the calling function expects to */
+ if (!ftrace_graph_entry(&trace)) {
+ current->curr_ret_stack--;
+ return parent + 8UL;
+ }
+
+ return return_hooker;
+}
+#endif /* CONFIG_FUNCTION_GRAPH_TRACER */
diff --git a/arch/sparc/kernel/helpers.S b/arch/sparc/kernel/helpers.S
index 314dd0c9fc5b..92090cc9e829 100644
--- a/arch/sparc/kernel/helpers.S
+++ b/arch/sparc/kernel/helpers.S
@@ -46,6 +46,81 @@ stack_trace_flush:
nop
.size stack_trace_flush,.-stack_trace_flush
+#ifdef CONFIG_PERF_EVENTS
+ .globl perf_arch_fetch_caller_regs
+ .type perf_arch_fetch_caller_regs,#function
+perf_arch_fetch_caller_regs:
+ /* We always read the %pstate into %o5 since we will use
+ * that to construct a fake %tstate to store into the regs.
+ */
+ rdpr %pstate, %o5
+ brz,pn %o2, 50f
+ mov %o2, %g7
+
+ /* Turn off interrupts while we walk around the register
+ * window by hand.
+ */
+ wrpr %o5, PSTATE_IE, %pstate
+
+ /* The %canrestore tells us how many register windows are
+ * still live in the chip above us, past that we have to
+ * walk the frame as saved on the stack. We stash away
+ * the %cwp in %g1 so we can return back to the original
+ * register window.
+ */
+ rdpr %cwp, %g1
+ rdpr %canrestore, %g2
+ sub %g1, 1, %g3
+
+ /* We have the skip count in %g7, if it hits zero then
+ * %fp/%i7 are the registers we need. Otherwise if our
+ * %canrestore count maintained in %g2 hits zero we have
+ * to start traversing the stack.
+ */
+10: brz,pn %g2, 4f
+ sub %g2, 1, %g2
+ wrpr %g3, %cwp
+ subcc %g7, 1, %g7
+ bne,pt %xcc, 10b
+ sub %g3, 1, %g3
+
+ /* We found the values we need in the cpu's register
+ * windows.
+ */
+ mov %fp, %g3
+ ba,pt %xcc, 3f
+ mov %i7, %g2
+
+50: mov %fp, %g3
+ ba,pt %xcc, 2f
+ mov %i7, %g2
+
+ /* We hit the end of the valid register windows in the
+ * cpu, start traversing the stack frame.
+ */
+4: mov %fp, %g3
+
+20: ldx [%g3 + STACK_BIAS + RW_V9_I7], %g2
+ subcc %g7, 1, %g7
+ bne,pn %xcc, 20b
+ ldx [%g3 + STACK_BIAS + RW_V9_I6], %g3
+
+ /* Restore the current register window position and
+ * re-enable interrupts.
+ */
+3: wrpr %g1, %cwp
+ wrpr %o5, %pstate
+
+2: stx %g3, [%o0 + PT_V9_FP]
+ sllx %o5, 8, %o5
+ stx %o5, [%o0 + PT_V9_TSTATE]
+ stx %g2, [%o0 + PT_V9_TPC]
+ add %g2, 4, %g2
+ retl
+ stx %g2, [%o0 + PT_V9_TNPC]
+ .size perf_arch_fetch_caller_regs,.-perf_arch_fetch_caller_regs
+#endif /* CONFIG_PERF_EVENTS */
+
#ifdef CONFIG_SMP
.globl hard_smp_processor_id
.type hard_smp_processor_id,#function
diff --git a/arch/sparc/kernel/hvapi.c b/arch/sparc/kernel/hvapi.c
index 1d272c3b5740..7c60afb835b0 100644
--- a/arch/sparc/kernel/hvapi.c
+++ b/arch/sparc/kernel/hvapi.c
@@ -5,7 +5,6 @@
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
-#include <linux/slab.h>
#include <asm/hypervisor.h>
#include <asm/oplib.h>
diff --git a/arch/sparc/kernel/iommu.c b/arch/sparc/kernel/iommu.c
index 8414549c1834..47977a77f6c6 100644
--- a/arch/sparc/kernel/iommu.c
+++ b/arch/sparc/kernel/iommu.c
@@ -6,6 +6,7 @@
#include <linux/kernel.h>
#include <linux/module.h>
+#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/device.h>
#include <linux/dma-mapping.h>
diff --git a/arch/sparc/kernel/irq_64.c b/arch/sparc/kernel/irq_64.c
index e1cbdb94d97b..830d70a3e20b 100644
--- a/arch/sparc/kernel/irq_64.c
+++ b/arch/sparc/kernel/irq_64.c
@@ -20,7 +20,9 @@
#include <linux/delay.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
+#include <linux/ftrace.h>
#include <linux/irq.h>
+#include <linux/kmemleak.h>
#include <asm/ptrace.h>
#include <asm/processor.h>
@@ -45,6 +47,7 @@
#include "entry.h"
#include "cpumap.h"
+#include "kstack.h"
#define NUM_IVECS (IMAP_INR + 1)
@@ -647,6 +650,14 @@ unsigned int sun4v_build_virq(u32 devhandle, unsigned int devino)
bucket = kzalloc(sizeof(struct ino_bucket), GFP_ATOMIC);
if (unlikely(!bucket))
return 0;
+
+ /* The only reference we store to the IRQ bucket is
+ * by physical address which kmemleak can't see, tell
+ * it that this object explicitly is not a leak and
+ * should be scanned.
+ */
+ kmemleak_not_leak(bucket);
+
__flush_dcache_range((unsigned long) bucket,
((unsigned long) bucket +
sizeof(struct ino_bucket)));
@@ -703,25 +714,7 @@ void ack_bad_irq(unsigned int virt_irq)
void *hardirq_stack[NR_CPUS];
void *softirq_stack[NR_CPUS];
-static __attribute__((always_inline)) void *set_hardirq_stack(void)
-{
- void *orig_sp, *sp = hardirq_stack[smp_processor_id()];
-
- __asm__ __volatile__("mov %%sp, %0" : "=r" (orig_sp));
- if (orig_sp < sp ||
- orig_sp > (sp + THREAD_SIZE)) {
- sp += THREAD_SIZE - 192 - STACK_BIAS;
- __asm__ __volatile__("mov %0, %%sp" : : "r" (sp));
- }
-
- return orig_sp;
-}
-static __attribute__((always_inline)) void restore_hardirq_stack(void *orig_sp)
-{
- __asm__ __volatile__("mov %0, %%sp" : : "r" (orig_sp));
-}
-
-void handler_irq(int irq, struct pt_regs *regs)
+void __irq_entry handler_irq(int irq, struct pt_regs *regs)
{
unsigned long pstate, bucket_pa;
struct pt_regs *old_regs;
diff --git a/arch/sparc/kernel/kgdb_64.c b/arch/sparc/kernel/kgdb_64.c
index f5a0fd490b59..0a2bd0f99fc1 100644
--- a/arch/sparc/kernel/kgdb_64.c
+++ b/arch/sparc/kernel/kgdb_64.c
@@ -5,6 +5,7 @@
#include <linux/kgdb.h>
#include <linux/kdebug.h>
+#include <linux/ftrace.h>
#include <asm/kdebug.h>
#include <asm/ptrace.h>
@@ -108,7 +109,7 @@ void gdb_regs_to_pt_regs(unsigned long *gdb_regs, struct pt_regs *regs)
}
#ifdef CONFIG_SMP
-void smp_kgdb_capture_client(int irq, struct pt_regs *regs)
+void __irq_entry smp_kgdb_capture_client(int irq, struct pt_regs *regs)
{
unsigned long flags;
diff --git a/arch/sparc/kernel/kprobes.c b/arch/sparc/kernel/kprobes.c
index 6716584e48ab..a39d1ba5a119 100644
--- a/arch/sparc/kernel/kprobes.c
+++ b/arch/sparc/kernel/kprobes.c
@@ -7,6 +7,7 @@
#include <linux/kprobes.h>
#include <linux/module.h>
#include <linux/kdebug.h>
+#include <linux/slab.h>
#include <asm/signal.h>
#include <asm/cacheflush.h>
#include <asm/uaccess.h>
diff --git a/arch/sparc/kernel/kstack.h b/arch/sparc/kernel/kstack.h
index 5247283d1c03..53dfb92e09fb 100644
--- a/arch/sparc/kernel/kstack.h
+++ b/arch/sparc/kernel/kstack.h
@@ -61,4 +61,23 @@ check_magic:
}
+static inline __attribute__((always_inline)) void *set_hardirq_stack(void)
+{
+ void *orig_sp, *sp = hardirq_stack[smp_processor_id()];
+
+ __asm__ __volatile__("mov %%sp, %0" : "=r" (orig_sp));
+ if (orig_sp < sp ||
+ orig_sp > (sp + THREAD_SIZE)) {
+ sp += THREAD_SIZE - 192 - STACK_BIAS;
+ __asm__ __volatile__("mov %0, %%sp" : : "r" (sp));
+ }
+
+ return orig_sp;
+}
+
+static inline __attribute__((always_inline)) void restore_hardirq_stack(void *orig_sp)
+{
+ __asm__ __volatile__("mov %0, %%sp" : : "r" (orig_sp));
+}
+
#endif /* _KSTACK_H */
diff --git a/arch/sparc/kernel/led.c b/arch/sparc/kernel/led.c
index 00d034ea2164..3ae36f36e758 100644
--- a/arch/sparc/kernel/led.c
+++ b/arch/sparc/kernel/led.c
@@ -3,6 +3,7 @@
#include <linux/init.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
+#include <linux/slab.h>
#include <linux/string.h>
#include <linux/jiffies.h>
#include <linux/timer.h>
diff --git a/arch/sparc/kernel/leon_kernel.c b/arch/sparc/kernel/leon_kernel.c
index 0409d62d8ca2..6a7b4dbc8e09 100644
--- a/arch/sparc/kernel/leon_kernel.c
+++ b/arch/sparc/kernel/leon_kernel.c
@@ -7,7 +7,6 @@
#include <linux/module.h>
#include <linux/errno.h>
#include <linux/mutex.h>
-#include <linux/slab.h>
#include <linux/of.h>
#include <linux/of_platform.h>
#include <linux/interrupt.h>
diff --git a/arch/sparc/kernel/leon_smp.c b/arch/sparc/kernel/leon_smp.c
index 85787577f683..e1656fc41ccb 100644
--- a/arch/sparc/kernel/leon_smp.c
+++ b/arch/sparc/kernel/leon_smp.c
@@ -22,6 +22,7 @@
#include <linux/profile.h>
#include <linux/pm.h>
#include <linux/delay.h>
+#include <linux/gfp.h>
#include <asm/cacheflush.h>
#include <asm/tlbflush.h>
diff --git a/arch/sparc/kernel/module.c b/arch/sparc/kernel/module.c
index 0ee642f63234..f848aadf54dc 100644
--- a/arch/sparc/kernel/module.c
+++ b/arch/sparc/kernel/module.c
@@ -9,9 +9,9 @@
#include <linux/elf.h>
#include <linux/vmalloc.h>
#include <linux/fs.h>
+#include <linux/gfp.h>
#include <linux/string.h>
#include <linux/ctype.h>
-#include <linux/slab.h>
#include <linux/mm.h>
#include <asm/processor.h>
diff --git a/arch/sparc/kernel/nmi.c b/arch/sparc/kernel/nmi.c
index b287b62c7ea3..a4bd7ba74c89 100644
--- a/arch/sparc/kernel/nmi.c
+++ b/arch/sparc/kernel/nmi.c
@@ -23,6 +23,8 @@
#include <asm/ptrace.h>
#include <asm/pcr.h>
+#include "kstack.h"
+
/* We don't have a real NMI on sparc64, but we can fake one
* up using profiling counter overflow interrupts and interrupt
* levels.
@@ -92,7 +94,7 @@ static void die_nmi(const char *str, struct pt_regs *regs, int do_panic)
notrace __kprobes void perfctr_irq(int irq, struct pt_regs *regs)
{
unsigned int sum, touched = 0;
- int cpu = smp_processor_id();
+ void *orig_sp;
clear_softint(1 << irq);
@@ -100,13 +102,15 @@ notrace __kprobes void perfctr_irq(int irq, struct pt_regs *regs)
nmi_enter();
+ orig_sp = set_hardirq_stack();
+
if (notify_die(DIE_NMI, "nmi", regs, 0,
pt_regs_trap_type(regs), SIGINT) == NOTIFY_STOP)
touched = 1;
else
pcr_ops->write(PCR_PIC_PRIV);
- sum = kstat_irqs_cpu(0, cpu);
+ sum = local_cpu_data().irq0_irqs;
if (__get_cpu_var(nmi_touch)) {
__get_cpu_var(nmi_touch) = 0;
touched = 1;
@@ -125,6 +129,8 @@ notrace __kprobes void perfctr_irq(int irq, struct pt_regs *regs)
pcr_ops->write(pcr_enable);
}
+ restore_hardirq_stack(orig_sp);
+
nmi_exit();
}
diff --git a/arch/sparc/kernel/of_device_common.c b/arch/sparc/kernel/of_device_common.c
index cb8eb799bb6c..0247e68210b3 100644
--- a/arch/sparc/kernel/of_device_common.c
+++ b/arch/sparc/kernel/of_device_common.c
@@ -4,7 +4,6 @@
#include <linux/init.h>
#include <linux/module.h>
#include <linux/mod_devicetable.h>
-#include <linux/slab.h>
#include <linux/errno.h>
#include <linux/irq.h>
#include <linux/of_device.h>
diff --git a/arch/sparc/kernel/pci_common.c b/arch/sparc/kernel/pci_common.c
index b775658a927d..8a000583b5cf 100644
--- a/arch/sparc/kernel/pci_common.c
+++ b/arch/sparc/kernel/pci_common.c
@@ -371,14 +371,19 @@ static void pci_register_iommu_region(struct pci_pbm_info *pbm)
struct resource *rp = kzalloc(sizeof(*rp), GFP_KERNEL);
if (!rp) {
- prom_printf("Cannot allocate IOMMU resource.\n");
- prom_halt();
+ pr_info("%s: Cannot allocate IOMMU resource.\n",
+ pbm->name);
+ return;
}
rp->name = "IOMMU";
rp->start = pbm->mem_space.start + (unsigned long) vdma[0];
rp->end = rp->start + (unsigned long) vdma[1] - 1UL;
rp->flags = IORESOURCE_BUSY;
- request_resource(&pbm->mem_space, rp);
+ if (request_resource(&pbm->mem_space, rp)) {
+ pr_info("%s: Unable to request IOMMU resource.\n",
+ pbm->name);
+ kfree(rp);
+ }
}
}
diff --git a/arch/sparc/kernel/pci_msi.c b/arch/sparc/kernel/pci_msi.c
index e1b0541feb19..e0ef847219c3 100644
--- a/arch/sparc/kernel/pci_msi.c
+++ b/arch/sparc/kernel/pci_msi.c
@@ -4,6 +4,7 @@
*/
#include <linux/kernel.h>
#include <linux/interrupt.h>
+#include <linux/slab.h>
#include <linux/irq.h>
#include "pci_impl.h"
diff --git a/arch/sparc/kernel/pcr.c b/arch/sparc/kernel/pcr.c
index 2d94e7a03af5..c4a6a50b4849 100644
--- a/arch/sparc/kernel/pcr.c
+++ b/arch/sparc/kernel/pcr.c
@@ -8,6 +8,7 @@
#include <linux/irq.h>
#include <linux/perf_event.h>
+#include <linux/ftrace.h>
#include <asm/pil.h>
#include <asm/pcr.h>
@@ -34,7 +35,7 @@ unsigned int picl_shift;
* Therefore in such situations we defer the work by signalling
* a lower level cpu IRQ.
*/
-void deferred_pcr_work_irq(int irq, struct pt_regs *regs)
+void __irq_entry deferred_pcr_work_irq(int irq, struct pt_regs *regs)
{
struct pt_regs *old_regs;
diff --git a/arch/sparc/kernel/perf_event.c b/arch/sparc/kernel/perf_event.c
index b867ab3353b4..e2771939341d 100644
--- a/arch/sparc/kernel/perf_event.c
+++ b/arch/sparc/kernel/perf_event.c
@@ -1189,7 +1189,7 @@ static int __kprobes perf_event_nmi_handler(struct notifier_block *self,
regs = args->regs;
- data.addr = 0;
+ perf_sample_data_init(&data, 0);
cpuc = &__get_cpu_var(cpu_hw_events);
@@ -1337,7 +1337,7 @@ static void perf_callchain_user_32(struct pt_regs *regs,
callchain_store(entry, PERF_CONTEXT_USER);
callchain_store(entry, regs->tpc);
- ufp = regs->u_regs[UREG_I6];
+ ufp = regs->u_regs[UREG_I6] & 0xffffffffUL;
do {
struct sparc_stackf32 *usf, sf;
unsigned long pc;
diff --git a/arch/sparc/kernel/process_32.c b/arch/sparc/kernel/process_32.c
index c49865b30719..40e29fc8a4d6 100644
--- a/arch/sparc/kernel/process_32.c
+++ b/arch/sparc/kernel/process_32.c
@@ -17,13 +17,13 @@
#include <linux/mm.h>
#include <linux/stddef.h>
#include <linux/ptrace.h>
-#include <linux/slab.h>
#include <linux/user.h>
#include <linux/smp.h>
#include <linux/reboot.h>
#include <linux/delay.h>
#include <linux/pm.h>
#include <linux/init.h>
+#include <linux/slab.h>
#include <asm/auxio.h>
#include <asm/oplib.h>
diff --git a/arch/sparc/kernel/ptrace_32.c b/arch/sparc/kernel/ptrace_32.c
index 7e3dfd9bb97e..e608f397e11f 100644
--- a/arch/sparc/kernel/ptrace_32.c
+++ b/arch/sparc/kernel/ptrace_32.c
@@ -65,6 +65,7 @@ static int genregs32_get(struct task_struct *target,
*k++ = regs->u_regs[pos++];
reg_window = (unsigned long __user *) regs->u_regs[UREG_I6];
+ reg_window -= 16;
for (; count > 0 && pos < 32; count--) {
if (get_user(*k++, &reg_window[pos++]))
return -EFAULT;
@@ -76,6 +77,7 @@ static int genregs32_get(struct task_struct *target,
}
reg_window = (unsigned long __user *) regs->u_regs[UREG_I6];
+ reg_window -= 16;
for (; count > 0 && pos < 32; count--) {
if (get_user(reg, &reg_window[pos++]) ||
put_user(reg, u++))
@@ -141,6 +143,7 @@ static int genregs32_set(struct task_struct *target,
regs->u_regs[pos++] = *k++;
reg_window = (unsigned long __user *) regs->u_regs[UREG_I6];
+ reg_window -= 16;
for (; count > 0 && pos < 32; count--) {
if (put_user(*k++, &reg_window[pos++]))
return -EFAULT;
@@ -153,6 +156,7 @@ static int genregs32_set(struct task_struct *target,
}
reg_window = (unsigned long __user *) regs->u_regs[UREG_I6];
+ reg_window -= 16;
for (; count > 0 && pos < 32; count--) {
if (get_user(reg, u++) ||
put_user(reg, &reg_window[pos++]))
diff --git a/arch/sparc/kernel/ptrace_64.c b/arch/sparc/kernel/ptrace_64.c
index 2f6524d1a817..aa90da08bf61 100644
--- a/arch/sparc/kernel/ptrace_64.c
+++ b/arch/sparc/kernel/ptrace_64.c
@@ -492,6 +492,7 @@ static int genregs32_get(struct task_struct *target,
*k++ = regs->u_regs[pos++];
reg_window = (compat_ulong_t __user *) regs->u_regs[UREG_I6];
+ reg_window -= 16;
if (target == current) {
for (; count > 0 && pos < 32; count--) {
if (get_user(*k++, &reg_window[pos++]))
@@ -516,6 +517,7 @@ static int genregs32_get(struct task_struct *target,
}
reg_window = (compat_ulong_t __user *) regs->u_regs[UREG_I6];
+ reg_window -= 16;
if (target == current) {
for (; count > 0 && pos < 32; count--) {
if (get_user(reg, &reg_window[pos++]) ||
@@ -599,6 +601,7 @@ static int genregs32_set(struct task_struct *target,
regs->u_regs[pos++] = *k++;
reg_window = (compat_ulong_t __user *) regs->u_regs[UREG_I6];
+ reg_window -= 16;
if (target == current) {
for (; count > 0 && pos < 32; count--) {
if (put_user(*k++, &reg_window[pos++]))
@@ -625,6 +628,7 @@ static int genregs32_set(struct task_struct *target,
}
reg_window = (compat_ulong_t __user *) regs->u_regs[UREG_I6];
+ reg_window -= 16;
if (target == current) {
for (; count > 0 && pos < 32; count--) {
if (get_user(reg, u++) ||
diff --git a/arch/sparc/kernel/rtrap_64.S b/arch/sparc/kernel/rtrap_64.S
index 83f1873c6c13..090b9e9ad5e3 100644
--- a/arch/sparc/kernel/rtrap_64.S
+++ b/arch/sparc/kernel/rtrap_64.S
@@ -130,7 +130,17 @@ rtrap_xcall:
nop
call trace_hardirqs_on
nop
- wrpr %l4, %pil
+ /* Do not actually set the %pil here. We will do that
+ * below after we clear PSTATE_IE in the %pstate register.
+ * If we re-enable interrupts here, we can recurse down
+ * the hardirq stack potentially endlessly, causing a
+ * stack overflow.
+ *
+ * It is tempting to put this test and trace_hardirqs_on
+ * call at the 'rt_continue' label, but that will not work
+ * as that path hits unconditionally and we do not want to
+ * execute this in NMI return paths, for example.
+ */
#endif
rtrap_no_irq_enable:
andcc %l1, TSTATE_PRIV, %l3
diff --git a/arch/sparc/kernel/setup_64.c b/arch/sparc/kernel/setup_64.c
index a2a79e76344f..5f72de67588b 100644
--- a/arch/sparc/kernel/setup_64.c
+++ b/arch/sparc/kernel/setup_64.c
@@ -12,7 +12,6 @@
#include <linux/stddef.h>
#include <linux/unistd.h>
#include <linux/ptrace.h>
-#include <linux/slab.h>
#include <asm/smp.h>
#include <linux/user.h>
#include <linux/screen_info.h>
diff --git a/arch/sparc/kernel/smp_64.c b/arch/sparc/kernel/smp_64.c
index eb14844a0021..b6a2b8f47040 100644
--- a/arch/sparc/kernel/smp_64.c
+++ b/arch/sparc/kernel/smp_64.c
@@ -22,7 +22,9 @@
#include <linux/profile.h>
#include <linux/bootmem.h>
#include <linux/vmalloc.h>
+#include <linux/ftrace.h>
#include <linux/cpu.h>
+#include <linux/slab.h>
#include <asm/head.h>
#include <asm/ptrace.h>
@@ -822,13 +824,13 @@ void arch_send_call_function_single_ipi(int cpu)
&cpumask_of_cpu(cpu));
}
-void smp_call_function_client(int irq, struct pt_regs *regs)
+void __irq_entry smp_call_function_client(int irq, struct pt_regs *regs)
{
clear_softint(1 << irq);
generic_smp_call_function_interrupt();
}
-void smp_call_function_single_client(int irq, struct pt_regs *regs)
+void __irq_entry smp_call_function_single_client(int irq, struct pt_regs *regs)
{
clear_softint(1 << irq);
generic_smp_call_function_single_interrupt();
@@ -964,7 +966,7 @@ void flush_dcache_page_all(struct mm_struct *mm, struct page *page)
put_cpu();
}
-void smp_new_mmu_context_version_client(int irq, struct pt_regs *regs)
+void __irq_entry smp_new_mmu_context_version_client(int irq, struct pt_regs *regs)
{
struct mm_struct *mm;
unsigned long flags;
@@ -1148,7 +1150,7 @@ void smp_release(void)
*/
extern void prom_world(int);
-void smp_penguin_jailcell(int irq, struct pt_regs *regs)
+void __irq_entry smp_penguin_jailcell(int irq, struct pt_regs *regs)
{
clear_softint(1 << irq);
@@ -1364,7 +1366,7 @@ void smp_send_reschedule(int cpu)
&cpumask_of_cpu(cpu));
}
-void smp_receive_signal_client(int irq, struct pt_regs *regs)
+void __irq_entry smp_receive_signal_client(int irq, struct pt_regs *regs)
{
clear_softint(1 << irq);
}
diff --git a/arch/sparc/kernel/sun4c_irq.c b/arch/sparc/kernel/sun4c_irq.c
index bc3adbf79c6a..892fb884910a 100644
--- a/arch/sparc/kernel/sun4c_irq.c
+++ b/arch/sparc/kernel/sun4c_irq.c
@@ -16,7 +16,6 @@
#include <linux/sched.h>
#include <linux/ptrace.h>
#include <linux/interrupt.h>
-#include <linux/slab.h>
#include <linux/init.h>
#include <linux/of.h>
#include <linux/of_device.h>
diff --git a/arch/sparc/kernel/sun4m_irq.c b/arch/sparc/kernel/sun4m_irq.c
index 301892e2d718..7f3b97ff62c1 100644
--- a/arch/sparc/kernel/sun4m_irq.c
+++ b/arch/sparc/kernel/sun4m_irq.c
@@ -17,7 +17,6 @@
#include <linux/ptrace.h>
#include <linux/smp.h>
#include <linux/interrupt.h>
-#include <linux/slab.h>
#include <linux/init.h>
#include <linux/ioport.h>
#include <linux/of.h>
diff --git a/arch/sparc/kernel/sys_sparc32.c b/arch/sparc/kernel/sys_sparc32.c
index daded3b96398..c0ca87553e1c 100644
--- a/arch/sparc/kernel/sys_sparc32.c
+++ b/arch/sparc/kernel/sys_sparc32.c
@@ -21,7 +21,6 @@
#include <linux/sem.h>
#include <linux/msg.h>
#include <linux/shm.h>
-#include <linux/slab.h>
#include <linux/uio.h>
#include <linux/nfs_fs.h>
#include <linux/quota.h>
@@ -44,6 +43,7 @@
#include <linux/compat.h>
#include <linux/vfs.h>
#include <linux/ptrace.h>
+#include <linux/slab.h>
#include <asm/types.h>
#include <asm/uaccess.h>
diff --git a/arch/sparc/kernel/sysfs.c b/arch/sparc/kernel/sysfs.c
index ca39c606fe8e..1eb8b00aed75 100644
--- a/arch/sparc/kernel/sysfs.c
+++ b/arch/sparc/kernel/sysfs.c
@@ -107,12 +107,12 @@ static unsigned long run_on_cpu(unsigned long cpu,
unsigned long ret;
/* should return -EINVAL to userspace */
- if (set_cpus_allowed(current, cpumask_of_cpu(cpu)))
+ if (set_cpus_allowed_ptr(current, cpumask_of(cpu)))
return 0;
ret = func(arg);
- set_cpus_allowed(current, old_affinity);
+ set_cpus_allowed_ptr(current, &old_affinity);
return ret;
}
diff --git a/arch/sparc/kernel/time_64.c b/arch/sparc/kernel/time_64.c
index 67e165102885..c7bbe6cf7b85 100644
--- a/arch/sparc/kernel/time_64.c
+++ b/arch/sparc/kernel/time_64.c
@@ -35,6 +35,7 @@
#include <linux/clocksource.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
+#include <linux/ftrace.h>
#include <asm/oplib.h>
#include <asm/timer.h>
@@ -717,7 +718,7 @@ static struct clock_event_device sparc64_clockevent = {
};
static DEFINE_PER_CPU(struct clock_event_device, sparc64_events);
-void timer_interrupt(int irq, struct pt_regs *regs)
+void __irq_entry timer_interrupt(int irq, struct pt_regs *regs)
{
struct pt_regs *old_regs = set_irq_regs(regs);
unsigned long tick_mask = tick_ops->softint_mask;
@@ -728,6 +729,7 @@ void timer_interrupt(int irq, struct pt_regs *regs)
irq_enter();
+ local_cpu_data().irq0_irqs++;
kstat_incr_irqs_this_cpu(0, irq_to_desc(0));
if (unlikely(!evt->event_handler)) {
diff --git a/arch/sparc/kernel/traps_64.c b/arch/sparc/kernel/traps_64.c
index bdc05a21908b..9da57f032983 100644
--- a/arch/sparc/kernel/traps_64.c
+++ b/arch/sparc/kernel/traps_64.c
@@ -17,6 +17,7 @@
#include <linux/mm.h>
#include <linux/init.h>
#include <linux/kdebug.h>
+#include <linux/gfp.h>
#include <asm/smp.h>
#include <asm/delay.h>
@@ -2202,27 +2203,6 @@ void dump_stack(void)
EXPORT_SYMBOL(dump_stack);
-static inline int is_kernel_stack(struct task_struct *task,
- struct reg_window *rw)
-{
- unsigned long rw_addr = (unsigned long) rw;
- unsigned long thread_base, thread_end;
-
- if (rw_addr < PAGE_OFFSET) {
- if (task != &init_task)
- return 0;
- }
-
- thread_base = (unsigned long) task_stack_page(task);
- thread_end = thread_base + sizeof(union thread_union);
- if (rw_addr >= thread_base &&
- rw_addr < thread_end &&
- !(rw_addr & 0x7UL))
- return 1;
-
- return 0;
-}
-
static inline struct reg_window *kernel_stack_up(struct reg_window *rw)
{
unsigned long fp = rw->ins[6];
@@ -2251,6 +2231,7 @@ void die_if_kernel(char *str, struct pt_regs *regs)
show_regs(regs);
add_taint(TAINT_DIE);
if (regs->tstate & TSTATE_PRIV) {
+ struct thread_info *tp = current_thread_info();
struct reg_window *rw = (struct reg_window *)
(regs->u_regs[UREG_FP] + STACK_BIAS);
@@ -2258,8 +2239,8 @@ void die_if_kernel(char *str, struct pt_regs *regs)
* find some badly aligned kernel stack.
*/
while (rw &&
- count++ < 30&&
- is_kernel_stack(current, rw)) {
+ count++ < 30 &&
+ kstack_valid(tp, (unsigned long) rw)) {
printk("Caller[%016lx]: %pS\n", rw->ins[7],
(void *) rw->ins[7]);
diff --git a/arch/sparc/kernel/unaligned_64.c b/arch/sparc/kernel/unaligned_64.c
index ebce43018c49..c752c4c479bd 100644
--- a/arch/sparc/kernel/unaligned_64.c
+++ b/arch/sparc/kernel/unaligned_64.c
@@ -50,7 +50,7 @@ static inline enum direction decode_direction(unsigned int insn)
}
/* 16 = double-word, 8 = extra-word, 4 = word, 2 = half-word */
-static inline int decode_access_size(unsigned int insn)
+static inline int decode_access_size(struct pt_regs *regs, unsigned int insn)
{
unsigned int tmp;
@@ -66,7 +66,7 @@ static inline int decode_access_size(unsigned int insn)
return 2;
else {
printk("Impossible unaligned trap. insn=%08x\n", insn);
- die_if_kernel("Byte sized unaligned access?!?!", current_thread_info()->kregs);
+ die_if_kernel("Byte sized unaligned access?!?!", regs);
/* GCC should never warn that control reaches the end
* of this function without returning a value because
@@ -286,7 +286,7 @@ static void log_unaligned(struct pt_regs *regs)
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 size = decode_access_size(regs, insn);
int orig_asi, asi;
current_thread_info()->kern_una_regs = regs;
diff --git a/arch/sparc/kernel/us2e_cpufreq.c b/arch/sparc/kernel/us2e_cpufreq.c
index 791c15138f3a..8f982b76c712 100644
--- a/arch/sparc/kernel/us2e_cpufreq.c
+++ b/arch/sparc/kernel/us2e_cpufreq.c
@@ -238,12 +238,12 @@ static unsigned int us2e_freq_get(unsigned int cpu)
return 0;
cpus_allowed = current->cpus_allowed;
- set_cpus_allowed(current, cpumask_of_cpu(cpu));
+ set_cpus_allowed_ptr(current, cpumask_of(cpu));
clock_tick = sparc64_get_clock_tick(cpu) / 1000;
estar = read_hbreg(HBIRD_ESTAR_MODE_ADDR);
- set_cpus_allowed(current, cpus_allowed);
+ set_cpus_allowed_ptr(current, &cpus_allowed);
return clock_tick / estar_to_divisor(estar);
}
@@ -259,7 +259,7 @@ static void us2e_set_cpu_divider_index(unsigned int cpu, unsigned int index)
return;
cpus_allowed = current->cpus_allowed;
- set_cpus_allowed(current, cpumask_of_cpu(cpu));
+ set_cpus_allowed_ptr(current, cpumask_of(cpu));
new_freq = clock_tick = sparc64_get_clock_tick(cpu) / 1000;
new_bits = index_to_estar_mode(index);
@@ -281,7 +281,7 @@ static void us2e_set_cpu_divider_index(unsigned int cpu, unsigned int index)
cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE);
- set_cpus_allowed(current, cpus_allowed);
+ set_cpus_allowed_ptr(current, &cpus_allowed);
}
static int us2e_freq_target(struct cpufreq_policy *policy,
diff --git a/arch/sparc/kernel/us3_cpufreq.c b/arch/sparc/kernel/us3_cpufreq.c
index 365b6464e2ce..f35d1e794548 100644
--- a/arch/sparc/kernel/us3_cpufreq.c
+++ b/arch/sparc/kernel/us3_cpufreq.c
@@ -86,12 +86,12 @@ static unsigned int us3_freq_get(unsigned int cpu)
return 0;
cpus_allowed = current->cpus_allowed;
- set_cpus_allowed(current, cpumask_of_cpu(cpu));
+ set_cpus_allowed_ptr(current, cpumask_of(cpu));
reg = read_safari_cfg();
ret = get_current_freq(cpu, reg);
- set_cpus_allowed(current, cpus_allowed);
+ set_cpus_allowed_ptr(current, &cpus_allowed);
return ret;
}
@@ -106,7 +106,7 @@ static void us3_set_cpu_divider_index(unsigned int cpu, unsigned int index)
return;
cpus_allowed = current->cpus_allowed;
- set_cpus_allowed(current, cpumask_of_cpu(cpu));
+ set_cpus_allowed_ptr(current, cpumask_of(cpu));
new_freq = sparc64_get_clock_tick(cpu) / 1000;
switch (index) {
@@ -140,7 +140,7 @@ static void us3_set_cpu_divider_index(unsigned int cpu, unsigned int index)
cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE);
- set_cpus_allowed(current, cpus_allowed);
+ set_cpus_allowed_ptr(current, &cpus_allowed);
}
static int us3_freq_target(struct cpufreq_policy *policy,
diff --git a/arch/sparc/kernel/vio.c b/arch/sparc/kernel/vio.c
index c28c71449a6c..3cb1def9806c 100644
--- a/arch/sparc/kernel/vio.c
+++ b/arch/sparc/kernel/vio.c
@@ -10,6 +10,7 @@
*/
#include <linux/kernel.h>
+#include <linux/slab.h>
#include <linux/irq.h>
#include <linux/init.h>
diff --git a/arch/sparc/kernel/vmlinux.lds.S b/arch/sparc/kernel/vmlinux.lds.S
index 4e5992593967..0c1e6783657f 100644
--- a/arch/sparc/kernel/vmlinux.lds.S
+++ b/arch/sparc/kernel/vmlinux.lds.S
@@ -46,11 +46,16 @@ SECTIONS
SCHED_TEXT
LOCK_TEXT
KPROBES_TEXT
+ IRQENTRY_TEXT
*(.gnu.warning)
} = 0
_etext = .;
RO_DATA(PAGE_SIZE)
+
+ /* Start of data section */
+ _sdata = .;
+
.data1 : {
*(.data1)
}