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authorLinus Torvalds <torvalds@linux-foundation.org>2011-01-15 21:29:50 +0100
committerLinus Torvalds <torvalds@linux-foundation.org>2011-01-15 21:29:50 +0100
commit65e5d002b5ad220db2bf9557f53de5a98f7dab86 (patch)
tree93d36afd4b82a24e5b553766a574a6632fca3aff /arch/arm/kernel
parentMerge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-post-merge-2.6 (diff)
parentARM: fix missing branch in __error_a (diff)
downloadlinux-65e5d002b5ad220db2bf9557f53de5a98f7dab86.tar.xz
linux-65e5d002b5ad220db2bf9557f53de5a98f7dab86.zip
Merge branch 'fixes' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'fixes' of master.kernel.org:/home/rmk/linux-2.6-arm: ARM: fix missing branch in __error_a ARM: fix /proc/$PID/stack on SMP ARM: Fix build regression on SA11x0, PXA, and H720x targets ARM: 6625/1: use memblock memory regions for "System RAM" I/O resources ARM: fix wrongly patched constants ARM: 6624/1: fix dependency for CONFIG_SMP_ON_UP ARM: 6623/1: Thumb-2: Fix out-of-range offset for Thumb-2 in proc-v7.S ARM: 6622/1: fix dma_unmap_sg() documentation ARM: 6621/1: bitops: remove condition code clobber for CLZ ARM: 6620/1: Change misleading warning when CONFIG_CMDLINE_FORCE is used ARM: 6619/1: nommu: avoid mapping vectors page when !CONFIG_MMU ARM: sched_clock: make minsec argument to clocks_calc_mult_shift() zero ARM: sched_clock: allow init_sched_clock() to be called early ARM: integrator: fix compile warning in cpu.c ARM: 6616/1: Fix ep93xx-fb init/exit annotations ARM: twd: fix display of twd frequency ARM: udelay: prevent math rounding resulting in short udelays
Diffstat (limited to 'arch/arm/kernel')
-rw-r--r--arch/arm/kernel/head-common.S2
-rw-r--r--arch/arm/kernel/process.c2
-rw-r--r--arch/arm/kernel/sched_clock.c9
-rw-r--r--arch/arm/kernel/setup.c22
-rw-r--r--arch/arm/kernel/smp_twd.c2
-rw-r--r--arch/arm/kernel/stacktrace.c9
-rw-r--r--arch/arm/kernel/time.c4
7 files changed, 32 insertions, 18 deletions
diff --git a/arch/arm/kernel/head-common.S b/arch/arm/kernel/head-common.S
index bbecaac1e013..8f57515bbdb0 100644
--- a/arch/arm/kernel/head-common.S
+++ b/arch/arm/kernel/head-common.S
@@ -60,6 +60,8 @@ str_a1: .asciz "\nError: unrecognized/unsupported machine ID (r1 = 0x"
str_a2: .asciz ").\n\nAvailable machine support:\n\nID (hex)\tNAME\n"
str_a3: .asciz "\nPlease check your kernel config and/or bootloader.\n"
.align
+#else
+ b __error
#endif
/*
diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c
index e76fcaadce03..94bbedbed639 100644
--- a/arch/arm/kernel/process.c
+++ b/arch/arm/kernel/process.c
@@ -483,6 +483,7 @@ unsigned long arch_randomize_brk(struct mm_struct *mm)
return randomize_range(mm->brk, range_end, 0) ? : mm->brk;
}
+#ifdef CONFIG_MMU
/*
* The vectors page is always readable from user space for the
* atomic helpers and the signal restart code. Let's declare a mapping
@@ -503,3 +504,4 @@ const char *arch_vma_name(struct vm_area_struct *vma)
{
return (vma->vm_start == 0xffff0000) ? "[vectors]" : NULL;
}
+#endif
diff --git a/arch/arm/kernel/sched_clock.c b/arch/arm/kernel/sched_clock.c
index 2cdcc9287c74..9a46370fe9da 100644
--- a/arch/arm/kernel/sched_clock.c
+++ b/arch/arm/kernel/sched_clock.c
@@ -34,7 +34,7 @@ void __init init_sched_clock(struct clock_data *cd, void (*update)(void),
sched_clock_update_fn = update;
/* calculate the mult/shift to convert counter ticks to ns. */
- clocks_calc_mult_shift(&cd->mult, &cd->shift, rate, NSEC_PER_SEC, 60);
+ clocks_calc_mult_shift(&cd->mult, &cd->shift, rate, NSEC_PER_SEC, 0);
r = rate;
if (r >= 4000000) {
@@ -60,10 +60,15 @@ void __init init_sched_clock(struct clock_data *cd, void (*update)(void),
* sets the initial epoch.
*/
sched_clock_timer.data = msecs_to_jiffies(w - (w / 10));
- sched_clock_poll(sched_clock_timer.data);
+ update();
/*
* Ensure that sched_clock() starts off at 0ns
*/
cd->epoch_ns = 0;
}
+
+void __init sched_clock_postinit(void)
+{
+ sched_clock_poll(sched_clock_timer.data);
+}
diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index 3455ad33de4c..420b8d6485d6 100644
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -518,25 +518,21 @@ setup_ramdisk(int doload, int prompt, int image_start, unsigned int rd_sz)
#endif
}
-static void __init
-request_standard_resources(struct meminfo *mi, struct machine_desc *mdesc)
+static void __init request_standard_resources(struct machine_desc *mdesc)
{
+ struct memblock_region *region;
struct resource *res;
- int i;
kernel_code.start = virt_to_phys(_text);
kernel_code.end = virt_to_phys(_etext - 1);
kernel_data.start = virt_to_phys(_sdata);
kernel_data.end = virt_to_phys(_end - 1);
- for (i = 0; i < mi->nr_banks; i++) {
- if (mi->bank[i].size == 0)
- continue;
-
+ for_each_memblock(memory, region) {
res = alloc_bootmem_low(sizeof(*res));
res->name = "System RAM";
- res->start = mi->bank[i].start;
- res->end = mi->bank[i].start + mi->bank[i].size - 1;
+ res->start = __pfn_to_phys(memblock_region_memory_base_pfn(region));
+ res->end = __pfn_to_phys(memblock_region_memory_end_pfn(region)) - 1;
res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
request_resource(&iomem_resource, res);
@@ -650,15 +646,17 @@ static int __init parse_tag_revision(const struct tag *tag)
__tagtable(ATAG_REVISION, parse_tag_revision);
-#ifndef CONFIG_CMDLINE_FORCE
static int __init parse_tag_cmdline(const struct tag *tag)
{
+#ifndef CONFIG_CMDLINE_FORCE
strlcpy(default_command_line, tag->u.cmdline.cmdline, COMMAND_LINE_SIZE);
+#else
+ pr_warning("Ignoring tag cmdline (using the default kernel command line)\n");
+#endif /* CONFIG_CMDLINE_FORCE */
return 0;
}
__tagtable(ATAG_CMDLINE, parse_tag_cmdline);
-#endif /* CONFIG_CMDLINE_FORCE */
/*
* Scan the tag table for this tag, and call its parse function.
@@ -857,7 +855,7 @@ void __init setup_arch(char **cmdline_p)
arm_memblock_init(&meminfo, mdesc);
paging_init(mdesc);
- request_standard_resources(&meminfo, mdesc);
+ request_standard_resources(mdesc);
#ifdef CONFIG_SMP
if (is_smp())
diff --git a/arch/arm/kernel/smp_twd.c b/arch/arm/kernel/smp_twd.c
index dd790745b3ef..fd9156698ab9 100644
--- a/arch/arm/kernel/smp_twd.c
+++ b/arch/arm/kernel/smp_twd.c
@@ -114,7 +114,7 @@ static void __cpuinit twd_calibrate_rate(void)
twd_timer_rate = (0xFFFFFFFFU - count) * (HZ / 5);
printk("%lu.%02luMHz.\n", twd_timer_rate / 1000000,
- (twd_timer_rate / 100000) % 100);
+ (twd_timer_rate / 1000000) % 100);
}
load = twd_timer_rate / HZ;
diff --git a/arch/arm/kernel/stacktrace.c b/arch/arm/kernel/stacktrace.c
index c2e112e1a05f..381d23a497c1 100644
--- a/arch/arm/kernel/stacktrace.c
+++ b/arch/arm/kernel/stacktrace.c
@@ -94,10 +94,13 @@ void save_stack_trace_tsk(struct task_struct *tsk, struct stack_trace *trace)
if (tsk != current) {
#ifdef CONFIG_SMP
/*
- * What guarantees do we have here that 'tsk'
- * is not running on another CPU?
+ * What guarantees do we have here that 'tsk' is not
+ * running on another CPU? For now, ignore it as we
+ * can't guarantee we won't explode.
*/
- BUG();
+ if (trace->nr_entries < trace->max_entries)
+ trace->entries[trace->nr_entries++] = ULONG_MAX;
+ return;
#else
data.no_sched_functions = 1;
frame.fp = thread_saved_fp(tsk);
diff --git a/arch/arm/kernel/time.c b/arch/arm/kernel/time.c
index f1e2eb19a67d..3d76bf233734 100644
--- a/arch/arm/kernel/time.c
+++ b/arch/arm/kernel/time.c
@@ -29,6 +29,7 @@
#include <asm/leds.h>
#include <asm/thread_info.h>
+#include <asm/sched_clock.h>
#include <asm/stacktrace.h>
#include <asm/mach/arch.h>
#include <asm/mach/time.h>
@@ -163,5 +164,8 @@ void __init time_init(void)
{
system_timer = machine_desc->timer;
system_timer->init();
+#ifdef CONFIG_HAVE_SCHED_CLOCK
+ sched_clock_postinit();
+#endif
}