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authorIngo Molnar <mingo@elte.hu>2010-06-18 10:53:12 +0200
committerIngo Molnar <mingo@elte.hu>2010-06-18 10:53:19 +0200
commit646b1db4956ba8bf748b835b5eba211133d91c2e (patch)
tree061166d873d9da9cf83044a7593ad111787076c5 /arch/sh/kernel
parentperf session: fix error message on failure to open perf.data (diff)
parentLinux 2.6.35-rc3 (diff)
downloadlinux-646b1db4956ba8bf748b835b5eba211133d91c2e.tar.xz
linux-646b1db4956ba8bf748b835b5eba211133d91c2e.zip
Merge commit 'v2.6.35-rc3' into perf/core
Merge reason: Go from -rc1 base to -rc3 base, merge in fixes.
Diffstat (limited to 'arch/sh/kernel')
-rw-r--r--arch/sh/kernel/Makefile3
-rw-r--r--arch/sh/kernel/dwarf.c19
-rw-r--r--arch/sh/kernel/io.c22
-rw-r--r--arch/sh/kernel/io_generic.c20
-rw-r--r--arch/sh/kernel/io_trapped.c4
-rw-r--r--arch/sh/kernel/machvec.c17
-rw-r--r--arch/sh/kernel/return_address.c2
7 files changed, 56 insertions, 31 deletions
diff --git a/arch/sh/kernel/Makefile b/arch/sh/kernel/Makefile
index 650b92f00ee5..e25f3c69525d 100644
--- a/arch/sh/kernel/Makefile
+++ b/arch/sh/kernel/Makefile
@@ -12,7 +12,7 @@ endif
CFLAGS_REMOVE_return_address.o = -pg
obj-y := clkdev.o debugtraps.o dma-nommu.o dumpstack.o \
- idle.o io.o io_generic.o irq.o \
+ idle.o io.o irq.o \
irq_$(BITS).o machvec.o nmi_debug.o process.o \
process_$(BITS).o ptrace_$(BITS).o \
reboot.o return_address.o \
@@ -39,6 +39,7 @@ obj-$(CONFIG_DUMP_CODE) += disassemble.o
obj-$(CONFIG_HIBERNATION) += swsusp.o
obj-$(CONFIG_DWARF_UNWINDER) += dwarf.o
obj-$(CONFIG_PERF_EVENTS) += perf_event.o perf_callchain.o
+obj-$(CONFIG_HAS_IOPORT) += io_generic.o
obj-$(CONFIG_HAVE_HW_BREAKPOINT) += hw_breakpoint.o
obj-$(CONFIG_GENERIC_CLOCKEVENTS_BROADCAST) += localtimer.o
diff --git a/arch/sh/kernel/dwarf.c b/arch/sh/kernel/dwarf.c
index 886d7d83ace3..49c09c7d5b77 100644
--- a/arch/sh/kernel/dwarf.c
+++ b/arch/sh/kernel/dwarf.c
@@ -49,6 +49,8 @@ static DEFINE_SPINLOCK(dwarf_fde_lock);
static struct dwarf_cie *cached_cie;
+static unsigned int dwarf_unwinder_ready;
+
/**
* dwarf_frame_alloc_reg - allocate memory for a DWARF register
* @frame: the DWARF frame whose list of registers we insert on
@@ -582,6 +584,13 @@ struct dwarf_frame *dwarf_unwind_stack(unsigned long pc,
unsigned long addr;
/*
+ * If we've been called in to before initialization has
+ * completed, bail out immediately.
+ */
+ if (!dwarf_unwinder_ready)
+ return NULL;
+
+ /*
* If we're starting at the top of the stack we need get the
* contents of a physical register to get the CFA in order to
* begin the virtual unwinding of the stack.
@@ -1167,7 +1176,7 @@ void module_dwarf_cleanup(struct module *mod)
*/
static int __init dwarf_unwinder_init(void)
{
- int err;
+ int err = -ENOMEM;
dwarf_frame_cachep = kmem_cache_create("dwarf_frames",
sizeof(struct dwarf_frame), 0,
@@ -1181,11 +1190,15 @@ static int __init dwarf_unwinder_init(void)
mempool_alloc_slab,
mempool_free_slab,
dwarf_frame_cachep);
+ if (!dwarf_frame_pool)
+ goto out;
dwarf_reg_pool = mempool_create(DWARF_REG_MIN_REQ,
mempool_alloc_slab,
mempool_free_slab,
dwarf_reg_cachep);
+ if (!dwarf_reg_pool)
+ goto out;
err = dwarf_parse_section(__start_eh_frame, __stop_eh_frame, NULL);
if (err)
@@ -1195,11 +1208,13 @@ static int __init dwarf_unwinder_init(void)
if (err)
goto out;
+ dwarf_unwinder_ready = 1;
+
return 0;
out:
printk(KERN_ERR "Failed to initialise DWARF unwinder: %d\n", err);
dwarf_unwinder_cleanup();
- return -EINVAL;
+ return err;
}
early_initcall(dwarf_unwinder_init);
diff --git a/arch/sh/kernel/io.c b/arch/sh/kernel/io.c
index 4770c241c679..5c51b794ba2a 100644
--- a/arch/sh/kernel/io.c
+++ b/arch/sh/kernel/io.c
@@ -112,25 +112,3 @@ void memset_io(volatile void __iomem *dst, int c, unsigned long count)
}
}
EXPORT_SYMBOL(memset_io);
-
-#ifndef CONFIG_GENERIC_IOMAP
-
-void __iomem *ioport_map(unsigned long port, unsigned int nr)
-{
- void __iomem *ret;
-
- ret = __ioport_map_trapped(port, nr);
- if (ret)
- return ret;
-
- return __ioport_map(port, nr);
-}
-EXPORT_SYMBOL(ioport_map);
-
-void ioport_unmap(void __iomem *addr)
-{
- sh_mv.mv_ioport_unmap(addr);
-}
-EXPORT_SYMBOL(ioport_unmap);
-
-#endif /* CONFIG_GENERIC_IOMAP */
diff --git a/arch/sh/kernel/io_generic.c b/arch/sh/kernel/io_generic.c
index e1e1dbd19557..447d78f666f9 100644
--- a/arch/sh/kernel/io_generic.c
+++ b/arch/sh/kernel/io_generic.c
@@ -158,3 +158,23 @@ void __iomem *generic_ioport_map(unsigned long addr, unsigned int size)
void generic_ioport_unmap(void __iomem *addr)
{
}
+
+#ifndef CONFIG_GENERIC_IOMAP
+void __iomem *ioport_map(unsigned long port, unsigned int nr)
+{
+ void __iomem *ret;
+
+ ret = __ioport_map_trapped(port, nr);
+ if (ret)
+ return ret;
+
+ return __ioport_map(port, nr);
+}
+EXPORT_SYMBOL(ioport_map);
+
+void ioport_unmap(void __iomem *addr)
+{
+ sh_mv.mv_ioport_unmap(addr);
+}
+EXPORT_SYMBOL(ioport_unmap);
+#endif /* CONFIG_GENERIC_IOMAP */
diff --git a/arch/sh/kernel/io_trapped.c b/arch/sh/kernel/io_trapped.c
index 4a8bb4eeb8ad..2947d2bd1291 100644
--- a/arch/sh/kernel/io_trapped.c
+++ b/arch/sh/kernel/io_trapped.c
@@ -91,10 +91,14 @@ int register_trapped_io(struct trapped_io *tiop)
tiop->magic = IO_TRAPPED_MAGIC;
INIT_LIST_HEAD(&tiop->list);
spin_lock_irq(&trapped_lock);
+#ifdef CONFIG_HAS_IOPORT
if (flags & IORESOURCE_IO)
list_add(&tiop->list, &trapped_io);
+#endif
+#ifdef CONFIG_HAS_IOMEM
if (flags & IORESOURCE_MEM)
list_add(&tiop->list, &trapped_mem);
+#endif
spin_unlock_irq(&trapped_lock);
return 0;
diff --git a/arch/sh/kernel/machvec.c b/arch/sh/kernel/machvec.c
index 85cfaf916fdc..9f9bb63616ad 100644
--- a/arch/sh/kernel/machvec.c
+++ b/arch/sh/kernel/machvec.c
@@ -118,6 +118,14 @@ void __init sh_mv_setup(void)
sh_mv.mv_##elem = generic_##elem; \
} while (0)
+#ifdef CONFIG_HAS_IOPORT
+
+#ifdef P2SEG
+ __set_io_port_base(P2SEG);
+#else
+ __set_io_port_base(0);
+#endif
+
mv_set(inb); mv_set(inw); mv_set(inl);
mv_set(outb); mv_set(outw); mv_set(outl);
@@ -129,16 +137,13 @@ void __init sh_mv_setup(void)
mv_set(ioport_map);
mv_set(ioport_unmap);
+
+#endif
+
mv_set(irq_demux);
mv_set(mode_pins);
mv_set(mem_init);
if (!sh_mv.mv_nr_irqs)
sh_mv.mv_nr_irqs = NR_IRQS;
-
-#ifdef P2SEG
- __set_io_port_base(P2SEG);
-#else
- __set_io_port_base(0);
-#endif
}
diff --git a/arch/sh/kernel/return_address.c b/arch/sh/kernel/return_address.c
index cbf1dd5372b2..5124aeb28c3f 100644
--- a/arch/sh/kernel/return_address.c
+++ b/arch/sh/kernel/return_address.c
@@ -24,6 +24,8 @@ void *return_address(unsigned int depth)
struct dwarf_frame *tmp;
tmp = dwarf_unwind_stack(ra, frame);
+ if (!tmp)
+ return NULL;
if (frame)
dwarf_free_frame(frame);