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Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6

Browse Source 
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6:
  [IA64] SN specific version of dma_get_required_mask()
  [IA64] generic_defconfig: Enable SATA_VITESSE
  [IA64] dump stack on kernel unaligned warnings
  [IA64] Turn on CONFIG_HAVE_UNSTABLE_CLOCK
  [IA64] Update to use account_{steal,idle}_ticks
This commit is contained in:
Linus Torvalds 2009-01-15 12:56:12 -08:00
commit 647df5189f
12 changed files with 67 additions and 9 deletions
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9
Documentation/DMA-API.txt
View File

@ -170,16 +170,15 @@ Returns: 0 if successful and a negative error if not.
u64
dma_get_required_mask(struct device *dev)
After setting the mask with dma_set_mask(), this API returns the
actual mask (within that already set) that the platform actually
requires to operate efficiently. Usually this means the returned mask
This API returns the mask that the platform requires to
operate efficiently. Usually this means the returned mask
is the minimum required to cover all of memory. Examining the
required mask gives drivers with variable descriptor sizes the
opportunity to use smaller descriptors as necessary.
Requesting the required mask does not alter the current mask. If you
wish to take advantage of it, you should issue another dma_set_mask()
call to lower the mask again.
wish to take advantage of it, you should issue a dma_set_mask()
call to set the mask to the value returned.
Part Id - Streaming DMA mappings

1
arch/ia64/Kconfig
View File

@ -17,6 +17,7 @@ config IA64
select ACPI if (!IA64_HP_SIM)
select PM if (!IA64_HP_SIM)
select ARCH_SUPPORTS_MSI
select HAVE_UNSTABLE_SCHED_CLOCK
select HAVE_IDE
select HAVE_OPROFILE
select HAVE_KPROBES

2
arch/ia64/configs/generic_defconfig
View File

@ -578,7 +578,7 @@ CONFIG_ATA_PIIX=y
# CONFIG_SATA_SIS is not set
# CONFIG_SATA_ULI is not set
# CONFIG_SATA_VIA is not set
# CONFIG_SATA_VITESSE is not set
CONFIG_SATA_VITESSE=y
# CONFIG_SATA_INIC162X is not set
# CONFIG_PATA_ACPI is not set
# CONFIG_PATA_ALI is not set

2
arch/ia64/include/asm/dma-mapping.h
View File

@ -9,6 +9,8 @@
#include <linux/scatterlist.h>
#include <asm/swiotlb.h>
#define ARCH_HAS_DMA_GET_REQUIRED_MASK
struct dma_mapping_ops {
int (*mapping_error)(struct device *dev,
dma_addr_t dma_addr);

7
arch/ia64/include/asm/machvec.h
View File

@ -62,6 +62,7 @@ typedef dma_addr_t ia64_mv_dma_map_single_attrs (struct device *, void *, size_t
typedef void ia64_mv_dma_unmap_single_attrs (struct device *, dma_addr_t, size_t, int, struct dma_attrs *);
typedef int ia64_mv_dma_map_sg_attrs (struct device *, struct scatterlist *, int, int, struct dma_attrs *);
typedef void ia64_mv_dma_unmap_sg_attrs (struct device *, struct scatterlist *, int, int, struct dma_attrs *);
typedef u64 ia64_mv_dma_get_required_mask (struct device *);
/*
* WARNING: The legacy I/O space is _architected_. Platforms are
@ -159,6 +160,7 @@ extern void machvec_tlb_migrate_finish (struct mm_struct *);
# define platform_dma_sync_sg_for_device ia64_mv.dma_sync_sg_for_device
# define platform_dma_mapping_error ia64_mv.dma_mapping_error
# define platform_dma_supported ia64_mv.dma_supported
# define platform_dma_get_required_mask ia64_mv.dma_get_required_mask
# define platform_irq_to_vector ia64_mv.irq_to_vector
# define platform_local_vector_to_irq ia64_mv.local_vector_to_irq
# define platform_pci_get_legacy_mem ia64_mv.pci_get_legacy_mem
@ -213,6 +215,7 @@ struct ia64_machine_vector {
ia64_mv_dma_sync_sg_for_device *dma_sync_sg_for_device;
ia64_mv_dma_mapping_error *dma_mapping_error;
ia64_mv_dma_supported *dma_supported;
ia64_mv_dma_get_required_mask *dma_get_required_mask;
ia64_mv_irq_to_vector *irq_to_vector;
ia64_mv_local_vector_to_irq *local_vector_to_irq;
ia64_mv_pci_get_legacy_mem_t *pci_get_legacy_mem;
@ -263,6 +266,7 @@ struct ia64_machine_vector {
platform_dma_sync_sg_for_device, \
platform_dma_mapping_error, \
platform_dma_supported, \
platform_dma_get_required_mask, \
platform_irq_to_vector, \
platform_local_vector_to_irq, \
platform_pci_get_legacy_mem, \
@ -366,6 +370,9 @@ extern void machvec_init_from_cmdline(const char *cmdline);
#ifndef platform_dma_supported
# define platform_dma_supported swiotlb_dma_supported
#endif
#ifndef platform_dma_get_required_mask
# define platform_dma_get_required_mask ia64_dma_get_required_mask
#endif
#ifndef platform_irq_to_vector
# define platform_irq_to_vector __ia64_irq_to_vector
#endif

1
arch/ia64/include/asm/machvec_init.h
View File

@ -3,6 +3,7 @@
extern ia64_mv_send_ipi_t ia64_send_ipi;
extern ia64_mv_global_tlb_purge_t ia64_global_tlb_purge;
extern ia64_mv_dma_get_required_mask ia64_dma_get_required_mask;
extern ia64_mv_irq_to_vector __ia64_irq_to_vector;
extern ia64_mv_local_vector_to_irq __ia64_local_vector_to_irq;
extern ia64_mv_pci_get_legacy_mem_t ia64_pci_get_legacy_mem;

2
arch/ia64/include/asm/machvec_sn2.h
View File

@ -67,6 +67,7 @@ extern ia64_mv_dma_sync_single_for_device sn_dma_sync_single_for_device;
extern ia64_mv_dma_sync_sg_for_device sn_dma_sync_sg_for_device;
extern ia64_mv_dma_mapping_error sn_dma_mapping_error;
extern ia64_mv_dma_supported sn_dma_supported;
extern ia64_mv_dma_get_required_mask sn_dma_get_required_mask;
extern ia64_mv_migrate_t sn_migrate;
extern ia64_mv_kernel_launch_event_t sn_kernel_launch_event;
extern ia64_mv_setup_msi_irq_t sn_setup_msi_irq;
@ -123,6 +124,7 @@ extern ia64_mv_pci_fixup_bus_t sn_pci_fixup_bus;
#define platform_dma_sync_sg_for_device sn_dma_sync_sg_for_device
#define platform_dma_mapping_error sn_dma_mapping_error
#define platform_dma_supported sn_dma_supported
#define platform_dma_get_required_mask sn_dma_get_required_mask
#define platform_migrate sn_migrate
#define platform_kernel_launch_event sn_kernel_launch_event
#ifdef CONFIG_PCI_MSI

6
arch/ia64/kernel/unaligned.c
View File

@ -59,6 +59,7 @@ dump (const char *str, void *vp, size_t len)
* (i.e. don't allow attacker to fill up logs with unaligned accesses).
*/
int no_unaligned_warning;
int unaligned_dump_stack;
static int noprint_warning;
/*
@ -1371,9 +1372,12 @@ ia64_handle_unaligned (unsigned long ifa, struct pt_regs *regs)
}
}
} else {
if (within_logging_rate_limit())
if (within_logging_rate_limit()) {
printk(KERN_WARNING "kernel unaligned access to 0x%016lx, ip=0x%016lx\n",
ifa, regs->cr_iip + ipsr->ri);
if (unaligned_dump_stack)
dump_stack();
}
set_fs(KERNEL_DS);
}

27
arch/ia64/pci/pci.c
View File

@ -19,6 +19,7 @@
#include <linux/ioport.h>
#include <linux/slab.h>
#include <linux/spinlock.h>
#include <linux/bootmem.h>
#include <asm/machvec.h>
#include <asm/page.h>
@ -748,6 +749,32 @@ static void __init set_pci_cacheline_size(void)
pci_cache_line_size = (1 << cci.pcci_line_size) / 4;
}
u64 ia64_dma_get_required_mask(struct device *dev)
{
u32 low_totalram = ((max_pfn - 1) << PAGE_SHIFT);
u32 high_totalram = ((max_pfn - 1) >> (32 - PAGE_SHIFT));
u64 mask;
if (!high_totalram) {
/* convert to mask just covering totalram */
low_totalram = (1 << (fls(low_totalram) - 1));
low_totalram += low_totalram - 1;
mask = low_totalram;
} else {
high_totalram = (1 << (fls(high_totalram) - 1));
high_totalram += high_totalram - 1;
mask = (((u64)high_totalram) << 32) + 0xffffffff;
}
return mask;
}
EXPORT_SYMBOL_GPL(ia64_dma_get_required_mask);
u64 dma_get_required_mask(struct device *dev)
{
return platform_dma_get_required_mask(dev);
}
EXPORT_SYMBOL_GPL(dma_get_required_mask);
static int __init pcibios_init(void)
{
set_pci_cacheline_size();

6
arch/ia64/sn/pci/pci_dma.c
View File

@ -356,6 +356,12 @@ int sn_dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
}
EXPORT_SYMBOL(sn_dma_mapping_error);
u64 sn_dma_get_required_mask(struct device *dev)
{
return DMA_64BIT_MASK;
}
EXPORT_SYMBOL_GPL(sn_dma_get_required_mask);
char *sn_pci_get_legacy_mem(struct pci_bus *bus)
{
if (!SN_PCIBUS_BUSSOFT(bus))

4
arch/ia64/xen/time.c
View File

@ -129,8 +129,8 @@ consider_steal_time(unsigned long new_itm)
blocked = stolentick;
if (stolen > 0 || blocked > 0) {
account_steal_time(NULL, jiffies_to_cputime(stolen));
account_steal_time(idle_task(cpu), jiffies_to_cputime(blocked));
account_steal_ticks(stolen);
account_idle_ticks(blocked);
run_local_timers();
if (rcu_pending(cpu))

9
kernel/sysctl.c
View File

@ -144,6 +144,7 @@ extern int acct_parm[];
#ifdef CONFIG_IA64
extern int no_unaligned_warning;
extern int unaligned_dump_stack;
#endif
#ifdef CONFIG_RT_MUTEXES
@ -781,6 +782,14 @@ static struct ctl_table kern_table[] = {
.mode = 0644,
.proc_handler = &proc_dointvec,
},
{
.ctl_name = CTL_UNNUMBERED,
.procname = "unaligned-dump-stack",
.data = &unaligned_dump_stack,
.maxlen = sizeof (int),
.mode = 0644,
.proc_handler = &proc_dointvec,
},
#endif
#ifdef CONFIG_DETECT_SOFTLOCKUP
{