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Merge branch 'master' into upstream

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This commit is contained in:
Jeff Garzik 2006-06-13 20:29:04 -04:00
commit b5ed7639c9
52 changed files with 782 additions and 340 deletions
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336
Documentation/memory-barriers.txt
View File

@ -19,6 +19,7 @@ Contents:
- Control dependencies.
- SMP barrier pairing.
- Examples of memory barrier sequences.
- Read memory barriers vs load speculation.
(*) Explicit kernel barriers.
@ -248,7 +249,7 @@ And there are a number of things that _must_ or _must_not_ be assumed:
we may get either of:
STORE *A = X; Y = LOAD *A;
STORE *A = Y;
STORE *A = Y = X;
=========================
@ -344,9 +345,12 @@ Memory barriers come in four basic varieties:
(4) General memory barriers.
A general memory barrier is a combination of both a read memory barrier
and a write memory barrier. It is a partial ordering over both loads and
stores.
A general memory barrier gives a guarantee that all the LOAD and STORE
operations specified before the barrier will appear to happen before all
the LOAD and STORE operations specified after the barrier with respect to
the other components of the system.
A general memory barrier is a partial ordering over both loads and stores.
General memory barriers imply both read and write memory barriers, and so
can substitute for either.
@ -546,9 +550,9 @@ write barrier, though, again, a general barrier is viable:
=============== ===============
a = 1;
<write barrier>
b = 2; x = a;
b = 2; x = b;
<read barrier>
y = b;
y = a;
Or:
@ -563,6 +567,18 @@ Or:
Basically, the read barrier always has to be there, even though it can be of
the "weaker" type.
[!] Note that the stores before the write barrier would normally be expected to
match the loads after the read barrier or data dependency barrier, and vice
versa:
CPU 1 CPU 2
=============== ===============
a = 1; }---- --->{ v = c
b = 2; } \ / { w = d
<write barrier> \ <read barrier>
c = 3; } / \ { x = a;
d = 4; }---- --->{ y = b;
EXAMPLES OF MEMORY BARRIER SEQUENCES
------------------------------------
@ -600,8 +616,8 @@ STORE B, STORE C } all occuring before the unordered set of { STORE D, STORE E
| | +------+
+-------+ : :
|
| Sequence in which stores committed to memory system
| by CPU 1
| Sequence in which stores are committed to the
| memory system by CPU 1
V
@ -683,14 +699,12 @@ then the following will occur:
| : : | |
| : : | CPU 2 |
| +-------+ | |
\ | X->9 |------>| |
\ +-------+ | |
----->| B->2 | | |
+-------+ | |
Makes sure all effects ---> ddddddddddddddddd | |
prior to the store of C +-------+ | |
are perceptible to | B->2 |------>| |
successive loads +-------+ | |
| | X->9 |------>| |
| +-------+ | |
Makes sure all effects ---> \ ddddddddddddddddd | |
prior to the store of C \ +-------+ | |
are perceptible to ----->| B->2 |------>| |
subsequent loads +-------+ | |
: : +-------+
@ -699,75 +713,241 @@ following sequence of events:
CPU 1 CPU 2
======================= =======================
{ A = 0, B = 9 }
STORE A=1
STORE B=2
STORE C=3
<write barrier>
STORE D=4
STORE E=5
LOAD A
STORE B=2
LOAD B
LOAD C
LOAD D
LOAD E
LOAD A
Without intervention, CPU 2 may then choose to perceive the events on CPU 1 in
some effectively random order, despite the write barrier issued by CPU 1:
+-------+ : :
| | +------+
| |------>| C=3 | }
| | : +------+ }
| | : | A=1 | }
| | : +------+ }
| CPU 1 | : | B=2 | }---
| | +------+ } \
| | wwwwwwwwwwwww} \
| | +------+ } \ : : +-------+
| | : | E=5 | } \ +-------+ | |
| | : +------+ } \ { | C->3 |------>| |
| |------>| D=4 | } \ { +-------+ : | |
| | +------+ \ { | E->5 | : | |
+-------+ : : \ { +-------+ : | |
Transfer -->{ | A->1 | : | CPU 2 |
from CPU 1 { +-------+ : | |
to CPU 2 { | D->4 | : | |
{ +-------+ : | |
{ | B->2 |------>| |
+-------+ | |
: : +-------+
+-------+ : : : :
| | +------+ +-------+
| |------>| A=1 |------ --->| A->0 |
| | +------+ \ +-------+
| CPU 1 | wwwwwwwwwwwwwwww \ --->| B->9 |
| | +------+ | +-------+
| |------>| B=2 |--- | : :
| | +------+ \ | : : +-------+
+-------+ : : \ | +-------+ | |
---------->| B->2 |------>| |
| +-------+ | CPU 2 |
| | A->0 |------>| |
| +-------+ | |
| : : +-------+
\ : :
\ +-------+
---->| A->1 |
+-------+
: :
If, however, a read barrier were to be placed between the load of C and the
load of D on CPU 2, then the partial ordering imposed by CPU 1 will be
perceived correctly by CPU 2.
If, however, a read barrier were to be placed between the load of E and the
load of A on CPU 2:
+-------+ : :
| | +------+
| |------>| C=3 | }
| | : +------+ }
| | : | A=1 | }---
| | : +------+ } \
| CPU 1 | : | B=2 | } \
| | +------+ \
| | wwwwwwwwwwwwwwww \
| | +------+ \ : : +-------+
| | : | E=5 | } \ +-------+ | |
| | : +------+ }--- \ { | C->3 |------>| |
| |------>| D=4 | } \ \ { +-------+ : | |
| | +------+ \ -->{ | B->2 | : | |
+-------+ : : \ { +-------+ : | |
\ { | A->1 | : | CPU 2 |
\ +-------+ | |
CPU 1 CPU 2
======================= =======================
{ A = 0, B = 9 }
STORE A=1
<write barrier>
STORE B=2
LOAD B
<read barrier>
LOAD A
then the partial ordering imposed by CPU 1 will be perceived correctly by CPU
2:
+-------+ : : : :
| | +------+ +-------+
| |------>| A=1 |------ --->| A->0 |
| | +------+ \ +-------+
| CPU 1 | wwwwwwwwwwwwwwww \ --->| B->9 |
| | +------+ | +-------+
| |------>| B=2 |--- | : :
| | +------+ \ | : : +-------+
+-------+ : : \ | +-------+ | |
---------->| B->2 |------>| |
| +-------+ | CPU 2 |
| : : | |
| : : | |
At this point the read ----> \ rrrrrrrrrrrrrrrrr | |
barrier causes all effects \ +-------+ | |
prior to the storage of C \ { | E->5 | : | |
to be perceptible to CPU 2 -->{ +-------+ : | |
{ | D->4 |------>| |
prior to the storage of B ---->| A->1 |------>| |
to be perceptible to CPU 2 +-------+ | |
: : +-------+
To illustrate this more completely, consider what could happen if the code
contained a load of A either side of the read barrier:
CPU 1 CPU 2
======================= =======================
{ A = 0, B = 9 }
STORE A=1
<write barrier>
STORE B=2
LOAD B
LOAD A [first load of A]
<read barrier>
LOAD A [second load of A]
Even though the two loads of A both occur after the load of B, they may both
come up with different values:
+-------+ : : : :
| | +------+ +-------+
| |------>| A=1 |------ --->| A->0 |
| | +------+ \ +-------+
| CPU 1 | wwwwwwwwwwwwwwww \ --->| B->9 |
| | +------+ | +-------+
| |------>| B=2 |--- | : :
| | +------+ \ | : : +-------+
+-------+ : : \ | +-------+ | |
---------->| B->2 |------>| |
| +-------+ | CPU 2 |
| : : | |
| : : | |
| +-------+ | |
| | A->0 |------>| 1st |
| +-------+ | |
At this point the read ----> \ rrrrrrrrrrrrrrrrr | |
barrier causes all effects \ +-------+ | |
prior to the storage of B ---->| A->1 |------>| 2nd |
to be perceptible to CPU 2 +-------+ | |
: : +-------+
But it may be that the update to A from CPU 1 becomes perceptible to CPU 2
before the read barrier completes anyway:
+-------+ : : : :
| | +------+ +-------+
| |------>| A=1 |------ --->| A->0 |
| | +------+ \ +-------+
| CPU 1 | wwwwwwwwwwwwwwww \ --->| B->9 |
| | +------+ | +-------+
| |------>| B=2 |--- | : :
| | +------+ \ | : : +-------+
+-------+ : : \ | +-------+ | |
---------->| B->2 |------>| |
| +-------+ | CPU 2 |
| : : | |
\ : : | |
\ +-------+ | |
---->| A->1 |------>| 1st |
+-------+ | |
rrrrrrrrrrrrrrrrr | |
+-------+ | |
| A->1 |------>| 2nd |
+-------+ | |
: : +-------+
The guarantee is that the second load will always come up with A == 1 if the
load of B came up with B == 2. No such guarantee exists for the first load of
A; that may come up with either A == 0 or A == 1.
READ MEMORY BARRIERS VS LOAD SPECULATION
----------------------------------------
Many CPUs speculate with loads: that is they see that they will need to load an
item from memory, and they find a time where they're not using the bus for any
other loads, and so do the load in advance - even though they haven't actually
got to that point in the instruction execution flow yet. This permits the
actual load instruction to potentially complete immediately because the CPU
already has the value to hand.
It may turn out that the CPU didn't actually need the value - perhaps because a
branch circumvented the load - in which case it can discard the value or just
cache it for later use.
Consider:
CPU 1 CPU 2
======================= =======================
LOAD B
DIVIDE } Divide instructions generally
DIVIDE } take a long time to perform
LOAD A
Which might appear as this:
: : +-------+
+-------+ | |
--->| B->2 |------>| |
+-------+ | CPU 2 |
: :DIVIDE | |
+-------+ | |
The CPU being busy doing a ---> --->| A->0 |~~~~ | |
division speculates on the +-------+ ~ | |
LOAD of A : : ~ | |
: :DIVIDE | |
: : ~ | |
Once the divisions are complete --> : : ~-->| |
the CPU can then perform the : : | |
LOAD with immediate effect : : +-------+
Placing a read barrier or a data dependency barrier just before the second
load:
CPU 1 CPU 2
======================= =======================
LOAD B
DIVIDE
DIVIDE
<read barrier>
LOAD A
will force any value speculatively obtained to be reconsidered to an extent
dependent on the type of barrier used. If there was no change made to the
speculated memory location, then the speculated value will just be used:
: : +-------+
+-------+ | |
--->| B->2 |------>| |
+-------+ | CPU 2 |
: :DIVIDE | |
+-------+ | |
The CPU being busy doing a ---> --->| A->0 |~~~~ | |
division speculates on the +-------+ ~ | |
LOAD of A : : ~ | |
: :DIVIDE | |
: : ~ | |
: : ~ | |
rrrrrrrrrrrrrrrr~ | |
: : ~ | |
: : ~-->| |
: : | |
: : +-------+
but if there was an update or an invalidation from another CPU pending, then
the speculation will be cancelled and the value reloaded:
: : +-------+
+-------+ | |
--->| B->2 |------>| |
+-------+ | CPU 2 |
: :DIVIDE | |
+-------+ | |
The CPU being busy doing a ---> --->| A->0 |~~~~ | |
division speculates on the +-------+ ~ | |
LOAD of A : : ~ | |
: :DIVIDE | |
: : ~ | |
: : ~ | |
rrrrrrrrrrrrrrrrr | |
+-------+ | |
The speculation is discarded ---> --->| A->1 |------>| |
and an updated value is +-------+ | |
retrieved : : +-------+
========================
EXPLICIT KERNEL BARRIERS
========================
@ -901,7 +1081,7 @@ IMPLICIT KERNEL MEMORY BARRIERS
===============================
Some of the other functions in the linux kernel imply memory barriers, amongst
which are locking, scheduling and memory allocation functions.
which are locking and scheduling functions.
This specification is a _minimum_ guarantee; any particular architecture may
provide more substantial guarantees, but these may not be relied upon outside
@ -966,6 +1146,20 @@ equivalent to a full barrier, but a LOCK followed by an UNLOCK is not.
barriers is that the effects instructions outside of a critical section may
seep into the inside of the critical section.
A LOCK followed by an UNLOCK may not be assumed to be full memory barrier
because it is possible for an access preceding the LOCK to happen after the
LOCK, and an access following the UNLOCK to happen before the UNLOCK, and the
two accesses can themselves then cross:
*A = a;
LOCK
UNLOCK
*B = b;
may occur as:
LOCK, STORE *B, STORE *A, UNLOCK
Locks and semaphores may not provide any guarantee of ordering on UP compiled
systems, and so cannot be counted on in such a situation to actually achieve
anything at all - especially with respect to I/O accesses - unless combined
@ -1016,8 +1210,6 @@ Other functions that imply barriers:
(*) schedule() and similar imply full memory barriers.
(*) Memory allocation and release functions imply full memory barriers.
=================================
INTER-CPU LOCKING BARRIER EFFECTS

2
arch/alpha/Kconfig
View File

@ -453,7 +453,7 @@ config ALPHA_IRONGATE
config GENERIC_HWEIGHT
bool
default y if !ALPHA_EV6 && !ALPHA_EV67
default y if !ALPHA_EV67
config ALPHA_AVANTI
bool

8
arch/arm/mach-ep93xx/ts72xx.c
View File

@ -111,21 +111,21 @@ static void __init ts72xx_map_io(void)
}
}
static unsigned char ts72xx_rtc_readb(unsigned long addr)
static unsigned char ts72xx_rtc_readbyte(unsigned long addr)
{
__raw_writeb(addr, TS72XX_RTC_INDEX_VIRT_BASE);
return __raw_readb(TS72XX_RTC_DATA_VIRT_BASE);
}
static void ts72xx_rtc_writeb(unsigned char value, unsigned long addr)
static void ts72xx_rtc_writebyte(unsigned char value, unsigned long addr)
{
__raw_writeb(addr, TS72XX_RTC_INDEX_VIRT_BASE);
__raw_writeb(value, TS72XX_RTC_DATA_VIRT_BASE);
}
static struct m48t86_ops ts72xx_rtc_ops = {
.readb = ts72xx_rtc_readb,
.writeb = ts72xx_rtc_writeb,
.readbyte = ts72xx_rtc_readbyte,
.writebyte = ts72xx_rtc_writebyte,
};
static struct platform_device ts72xx_rtc_device = {

2
arch/arm/mach-imx/irq.c
View File

@ -127,7 +127,7 @@ static void
imx_gpio_ack_irq(unsigned int irq)
{
DEBUG_IRQ("%s: irq %d\n", __FUNCTION__, irq);
ISR(IRQ_TO_REG(irq)) |= 1 << ((irq - IRQ_GPIOA(0)) % 32);
ISR(IRQ_TO_REG(irq)) = 1 << ((irq - IRQ_GPIOA(0)) % 32);
}
static void

5
arch/arm/mach-integrator/integrator_cp.c
View File

@ -232,8 +232,6 @@ static void __init intcp_init_irq(void)
for (i = IRQ_PIC_START; i <= IRQ_PIC_END; i++) {
if (i == 11)
i = 22;
if (i == IRQ_CP_CPPLDINT)
i++;
if (i == 29)
break;
set_irq_chip(i, &pic_chip);
@ -259,8 +257,7 @@ static void __init intcp_init_irq(void)
set_irq_flags(i, IRQF_VALID | IRQF_PROBE);
}
set_irq_handler(IRQ_CP_CPPLDINT, sic_handle_irq);
pic_unmask_irq(IRQ_CP_CPPLDINT);
set_irq_chained_handler(IRQ_CP_CPPLDINT, sic_handle_irq);
}
/*

1
arch/arm/mach-pxa/spitz.c
View File

@ -371,6 +371,7 @@ static int spitz_ohci_init(struct device *dev)
static struct pxaohci_platform_data spitz_ohci_platform_data = {
.port_mode = PMM_NPS_MODE,
.init = spitz_ohci_init,
.power_budget = 150,
};

8
arch/arm/mach-sa1100/neponset.c
View File

@ -59,6 +59,14 @@ neponset_irq_handler(unsigned int irq, struct irqdesc *desc, struct pt_regs *reg
if (irr & (IRR_ETHERNET | IRR_USAR)) {
desc->chip->mask(irq);
/*
* Ack the interrupt now to prevent re-entering
* this neponset handler. Again, this is safe
* since we'll check the IRR register prior to
* leaving.
*/
desc->chip->ack(irq);
if (irr & IRR_ETHERNET) {
d = irq_desc + IRQ_NEPONSET_SMC9196;
desc_handle_irq(IRQ_NEPONSET_SMC9196, d, regs);

5
arch/arm/mach-versatile/core.c
View File

@ -112,10 +112,9 @@ void __init versatile_init_irq(void)
{
unsigned int i;
vic_init(VA_VIC_BASE, IRQ_VIC_START, ~(1 << 31));
vic_init(VA_VIC_BASE, IRQ_VIC_START, ~0);
set_irq_handler(IRQ_VICSOURCE31, sic_handle_irq);
enable_irq(IRQ_VICSOURCE31);
set_irq_chained_handler(IRQ_VICSOURCE31, sic_handle_irq);
/* Do second interrupt controller */
writel(~0, VA_SIC_BASE + SIC_IRQ_ENABLE_CLEAR);

21
arch/i386/kernel/acpi/earlyquirk.c
View File

@ -5,18 +5,35 @@
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/pci.h>
#include <linux/acpi.h>
#include <asm/pci-direct.h>
#include <asm/acpi.h>
#include <asm/apic.h>
#ifdef CONFIG_ACPI
static int nvidia_hpet_detected __initdata;
static int __init nvidia_hpet_check(unsigned long phys, unsigned long size)
{
nvidia_hpet_detected = 1;
return 0;
}
#endif
static int __init check_bridge(int vendor, int device)
{
#ifdef CONFIG_ACPI
/* According to Nvidia all timer overrides are bogus. Just ignore
them all. */
/* According to Nvidia all timer overrides are bogus unless HPET
is enabled. */
if (vendor == PCI_VENDOR_ID_NVIDIA) {
nvidia_hpet_detected = 0;
acpi_table_parse(ACPI_HPET, nvidia_hpet_check);
if (nvidia_hpet_detected == 0) {
acpi_skip_timer_override = 1;
}
}
#endif
if (vendor == PCI_VENDOR_ID_ATI && timer_over_8254 == 1) {
timer_over_8254 = 0;

11
arch/i386/kernel/setup.c
View File

@ -1547,15 +1547,18 @@ void __init setup_arch(char **cmdline_p)
if (efi_enabled)
efi_map_memmap();
#ifdef CONFIG_X86_IO_APIC
check_acpi_pci(); /* Checks more than just ACPI actually */
#endif
#ifdef CONFIG_ACPI
/*
* Parse the ACPI tables for possible boot-time SMP configuration.
*/
acpi_boot_table_init();
#endif
#ifdef CONFIG_X86_IO_APIC
check_acpi_pci(); /* Checks more than just ACPI actually */
#endif
#ifdef CONFIG_ACPI
acpi_boot_init();
#if defined(CONFIG_SMP) && defined(CONFIG_X86_PC)

10
arch/powerpc/kernel/prom_init.c
View File

@ -822,6 +822,7 @@ static void __init prom_send_capabilities(void)
/* try calling the ibm,client-architecture-support method */
if (call_prom_ret("call-method", 3, 2, &ret,
ADDR("ibm,client-architecture-support"),
root,
ADDR(ibm_architecture_vec)) == 0) {
/* the call exists... */
if (ret)
@ -1622,6 +1623,15 @@ static int __init prom_find_machine_type(void)
if (strstr(p, RELOC("Power Macintosh")) ||
strstr(p, RELOC("MacRISC")))
return PLATFORM_POWERMAC;
#ifdef CONFIG_PPC64
/* We must make sure we don't detect the IBM Cell
* blades as pSeries due to some firmware issues,
* so we do it here.
*/
if (strstr(p, RELOC("IBM,CBEA")) ||
strstr(p, RELOC("IBM,CPBW-1.0")))
return PLATFORM_GENERIC;
#endif /* CONFIG_PPC64 */
i += sl + 1;
}
}

11
arch/powerpc/kernel/signal_32.c
View File

@ -803,10 +803,13 @@ static int do_setcontext(struct ucontext __user *ucp, struct pt_regs *regs, int
if (__get_user(cmcp, &ucp->uc_regs))
return -EFAULT;
mcp = (struct mcontext __user *)(u64)cmcp;
/* no need to check access_ok(mcp), since mcp < 4GB */
}
#else
if (__get_user(mcp, &ucp->uc_regs))
return -EFAULT;
if (!access_ok(VERIFY_READ, mcp, sizeof(*mcp)))
return -EFAULT;
#endif
restore_sigmask(&set);
if (restore_user_regs(regs, mcp, sig))
@ -908,13 +911,14 @@ int sys_debug_setcontext(struct ucontext __user *ctx,
{
struct sig_dbg_op op;
int i;
unsigned char tmp;
unsigned long new_msr = regs->msr;
#if defined(CONFIG_4xx) || defined(CONFIG_BOOKE)
unsigned long new_dbcr0 = current->thread.dbcr0;
#endif
for (i=0; i<ndbg; i++) {
if (__copy_from_user(&op, dbg, sizeof(op)))
if (copy_from_user(&op, dbg + i, sizeof(op)))
return -EFAULT;
switch (op.dbg_type) {
case SIG_DBG_SINGLE_STEPPING:
@ -959,6 +963,11 @@ int sys_debug_setcontext(struct ucontext __user *ctx,
current->thread.dbcr0 = new_dbcr0;
#endif
if (!access_ok(VERIFY_READ, ctx, sizeof(*ctx))
|| __get_user(tmp, (u8 __user *) ctx)
|| __get_user(tmp, (u8 __user *) (ctx + 1) - 1))
return -EFAULT;
/*
* If we get a fault copying the context into the kernel's
* image of the user's registers, we can't just return -EFAULT

2
arch/powerpc/kernel/signal_64.c
View File

@ -182,6 +182,8 @@ static long restore_sigcontext(struct pt_regs *regs, sigset_t *set, int sig,
err |= __get_user(msr, &sc->gp_regs[PT_MSR]);
if (err)
return err;
if (v_regs && !access_ok(VERIFY_READ, v_regs, 34 * sizeof(vector128)))
return -EFAULT;
/* Copy 33 vec registers (vr0..31 and vscr) from the stack */
if (v_regs != 0 && (msr & MSR_VEC) != 0)
err |= __copy_from_user(current->thread.vr, v_regs,

9
arch/powerpc/platforms/cell/setup.c
View File

@ -125,14 +125,13 @@ static void __init cell_init_early(void)
static int __init cell_probe(void)
{
/* XXX This is temporary, the Cell maintainer will come up with
* more appropriate detection logic
*/
unsigned long root = of_get_flat_dt_root();
if (!of_flat_dt_is_compatible(root, "IBM,CPBW-1.0"))
return 0;
if (of_flat_dt_is_compatible(root, "IBM,CBEA") ||
of_flat_dt_is_compatible(root, "IBM,CPBW-1.0"))
return 1;
return 0;
}
/*

8
arch/powerpc/platforms/pseries/setup.c
View File

@ -389,6 +389,7 @@ static int __init pSeries_probe_hypertas(unsigned long node,
static int __init pSeries_probe(void)
{
unsigned long root = of_get_flat_dt_root();
char *dtype = of_get_flat_dt_prop(of_get_flat_dt_root(),
"device_type", NULL);
if (dtype == NULL)
@ -396,6 +397,13 @@ static int __init pSeries_probe(void)
if (strcmp(dtype, "chrp"))
return 0;
/* Cell blades firmware claims to be chrp while it's not. Until this
* is fixed, we need to avoid those here.
*/
if (of_flat_dt_is_compatible(root, "IBM,CPBW-1.0") ||
of_flat_dt_is_compatible(root, "IBM,CBEA"))
return 0;
DBG("pSeries detected, looking for LPAR capability...\n");
/* Now try to figure out if we are running on LPAR */

11
arch/sparc/kernel/smp.c
View File

@ -69,6 +69,17 @@ void __init smp_store_cpu_info(int id)
"clock-frequency", 0);
cpu_data(id).prom_node = cpu_node;
cpu_data(id).mid = cpu_get_hwmid(cpu_node);
/* this is required to tune the scheduler correctly */
/* is it possible to have CPUs with different cache sizes? */
if (id == boot_cpu_id) {
int cache_line,cache_nlines;
cache_line = 0x20;
cache_line = prom_getintdefault(cpu_node, "ecache-line-size", cache_line);
cache_nlines = 0x8000;
cache_nlines = prom_getintdefault(cpu_node, "ecache-nlines", cache_nlines);
max_cache_size = cache_line * cache_nlines;
}
if (cpu_data(id).mid < 0)
panic("No MID found for CPU%d at node 0x%08d", id, cpu_node);
}

122
arch/sparc64/kernel/pci_sun4v.c
View File

@ -599,18 +599,128 @@ struct pci_iommu_ops pci_sun4v_iommu_ops = {
/* SUN4V PCI configuration space accessors. */
static inline int pci_sun4v_out_of_range(struct pci_pbm_info *pbm, unsigned int bus, unsigned int device, unsigned int func)
struct pdev_entry {
struct pdev_entry *next;
u32 devhandle;
unsigned int bus;
unsigned int device;
unsigned int func;
};
#define PDEV_HTAB_SIZE 16
#define PDEV_HTAB_MASK (PDEV_HTAB_SIZE - 1)
static struct pdev_entry *pdev_htab[PDEV_HTAB_SIZE];
static inline unsigned int pdev_hashfn(u32 devhandle, unsigned int bus, unsigned int device, unsigned int func)
{
if (bus == pbm->pci_first_busno) {
if (device == 0 && func == 0)
unsigned int val;
val = (devhandle ^ (devhandle >> 4));
val ^= bus;
val ^= device;
val ^= func;
return val & PDEV_HTAB_MASK;
}
static int pdev_htab_add(u32 devhandle, unsigned int bus, unsigned int device, unsigned int func)
{
struct pdev_entry *p = kmalloc(sizeof(*p), GFP_KERNEL);
struct pdev_entry **slot;
if (!p)
return -ENOMEM;
slot = &pdev_htab[pdev_hashfn(devhandle, bus, device, func)];
p->next = *slot;
*slot = p;
p->devhandle = devhandle;
p->bus = bus;
p->device = device;
p->func = func;
return 0;
return 1;
}
/* Recursively descend into the OBP device tree, rooted at toplevel_node,
* looking for a PCI device matching bus and devfn.
*/
static int obp_find(struct linux_prom_pci_registers *pregs, int toplevel_node, unsigned int bus, unsigned int devfn)
{
toplevel_node = prom_getchild(toplevel_node);
while (toplevel_node != 0) {
int ret = obp_find(pregs, toplevel_node, bus, devfn);
if (ret != 0)
return ret;
ret = prom_getproperty(toplevel_node, "reg", (char *) pregs,
sizeof(*pregs) * PROMREG_MAX);
if (ret == 0 || ret == -1)
goto next_sibling;
if (((pregs[0].phys_hi >> 16) & 0xff) == bus &&
((pregs[0].phys_hi >> 8) & 0xff) == devfn)
break;
next_sibling:
toplevel_node = prom_getsibling(toplevel_node);
}
return toplevel_node;
}
static int pdev_htab_populate(struct pci_pbm_info *pbm)
{
struct linux_prom_pci_registers pr[PROMREG_MAX];
u32 devhandle = pbm->devhandle;
unsigned int bus;
for (bus = pbm->pci_first_busno; bus <= pbm->pci_last_busno; bus++) {
unsigned int devfn;
for (devfn = 0; devfn < 256; devfn++) {
unsigned int device = PCI_SLOT(devfn);
unsigned int func = PCI_FUNC(devfn);
if (obp_find(pr, pbm->prom_node, bus, devfn)) {
int err = pdev_htab_add(devhandle, bus,
device, func);
if (err)
return err;
}
}
}
return 0;
}
static struct pdev_entry *pdev_find(u32 devhandle, unsigned int bus, unsigned int device, unsigned int func)
{
struct pdev_entry *p;
p = pdev_htab[pdev_hashfn(devhandle, bus, device, func)];
while (p) {
if (p->devhandle == devhandle &&
p->bus == bus &&
p->device == device &&
p->func == func)
break;
p = p->next;
}
return p;
}
static inline int pci_sun4v_out_of_range(struct pci_pbm_info *pbm, unsigned int bus, unsigned int device, unsigned int func)
{
if (bus < pbm->pci_first_busno ||
bus > pbm->pci_last_busno)
return 1;
return 0;
return pdev_find(pbm->devhandle, bus, device, func) == NULL;
}
static int pci_sun4v_read_pci_cfg(struct pci_bus *bus_dev, unsigned int devfn,
@ -1063,6 +1173,8 @@ static void pci_sun4v_pbm_init(struct pci_controller_info *p, int prom_node, u32
pci_sun4v_get_bus_range(pbm);
pci_sun4v_iommu_init(pbm);
pdev_htab_populate(pbm);
}
void sun4v_pci_init(int node, char *model_name)

35
arch/sparc64/kernel/smp.c
View File

@ -1287,6 +1287,40 @@ int setup_profiling_timer(unsigned int multiplier)
return 0;
}
static void __init smp_tune_scheduling(void)
{
int instance, node;
unsigned int def, smallest = ~0U;
def = ((tlb_type == hypervisor) ?
(3 * 1024 * 1024) :
(4 * 1024 * 1024));
instance = 0;
while (!cpu_find_by_instance(instance, &node, NULL)) {
unsigned int val;
val = prom_getintdefault(node, "ecache-size", def);
if (val < smallest)
smallest = val;
instance++;
}
/* Any value less than 256K is nonsense. */
if (smallest < (256U * 1024U))
smallest = 256 * 1024;
max_cache_size = smallest;
if (smallest < 1U * 1024U * 1024U)
printk(KERN_INFO "Using max_cache_size of %uKB\n",
smallest / 1024U);
else
printk(KERN_INFO "Using max_cache_size of %uMB\n",
smallest / 1024U / 1024U);
}
/* Constrain the number of cpus to max_cpus. */
void __init smp_prepare_cpus(unsigned int max_cpus)
{
@ -1322,6 +1356,7 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
}
smp_store_cpu_info(boot_cpu_id);
smp_tune_scheduling();
}
/* Set this up early so that things like the scheduler can init

1
arch/sparc64/kernel/sparc64_ksyms.c
View File

@ -297,7 +297,6 @@ EXPORT_SYMBOL(svr4_getcontext);
EXPORT_SYMBOL(svr4_setcontext);
EXPORT_SYMBOL(compat_sys_ioctl);
EXPORT_SYMBOL(sparc32_open);
EXPORT_SYMBOL(sys_close);
#endif
/* Special internal versions of library functions. */

11
arch/sparc64/kernel/traps.c
View File

@ -1797,7 +1797,9 @@ static const char *sun4v_err_type_to_str(u32 type)
};
}
static void sun4v_log_error(struct sun4v_error_entry *ent, int cpu, const char *pfx, atomic_t *ocnt)
extern void __show_regs(struct pt_regs * regs);
static void sun4v_log_error(struct pt_regs *regs, struct sun4v_error_entry *ent, int cpu, const char *pfx, atomic_t *ocnt)
{
int cnt;
@ -1830,6 +1832,8 @@ static void sun4v_log_error(struct sun4v_error_entry *ent, int cpu, const char *
pfx,
ent->err_raddr, ent->err_size, ent->err_cpu);
__show_regs(regs);
if ((cnt = atomic_read(ocnt)) != 0) {
atomic_set(ocnt, 0);
wmb();
@ -1862,7 +1866,7 @@ void sun4v_resum_error(struct pt_regs *regs, unsigned long offset)
put_cpu();
sun4v_log_error(&local_copy, cpu,
sun4v_log_error(regs, &local_copy, cpu,
KERN_ERR "RESUMABLE ERROR",
&sun4v_resum_oflow_cnt);
}
@ -1910,7 +1914,7 @@ void sun4v_nonresum_error(struct pt_regs *regs, unsigned long offset)
}
#endif
sun4v_log_error(&local_copy, cpu,
sun4v_log_error(regs, &local_copy, cpu,
KERN_EMERG "NON-RESUMABLE ERROR",
&sun4v_nonresum_oflow_cnt);
@ -2200,7 +2204,6 @@ 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 __show_regs(struct pt_regs * regs);
extern void smp_report_regs(void);
int count = 0;

28
arch/x86_64/kernel/io_apic.c
View File

@ -271,6 +271,18 @@ __setup("enable_8254_timer", setup_enable_8254_timer);
#include <linux/pci_ids.h>
#include <linux/pci.h>
#ifdef CONFIG_ACPI
static int nvidia_hpet_detected __initdata;
static int __init nvidia_hpet_check(unsigned long phys, unsigned long size)
{
nvidia_hpet_detected = 1;
return 0;
}
#endif
/* Temporary Hack. Nvidia and VIA boards currently only work with IO-APIC
off. Check for an Nvidia or VIA PCI bridge and turn it off.
Use pci direct infrastructure because this runs before the PCI subsystem.
@ -317,11 +329,19 @@ void __init check_ioapic(void)
return;
case PCI_VENDOR_ID_NVIDIA:
#ifdef CONFIG_ACPI
/* All timer overrides on Nvidia
seem to be wrong. Skip them. */
/*
* All timer overrides on Nvidia are
* wrong unless HPET is enabled.
*/
nvidia_hpet_detected = 0;
acpi_table_parse(ACPI_HPET,
nvidia_hpet_check);
if (nvidia_hpet_detected == 0) {
acpi_skip_timer_override = 1;
printk(KERN_INFO
"Nvidia board detected. Ignoring ACPI timer override.\n");
printk(KERN_INFO "Nvidia board "
"detected. Ignoring ACPI "
"timer override.\n");
}
#endif
/* RED-PEN skip them on mptables too? */
return;

13
block/as-iosched.c
View File

@ -1648,17 +1648,17 @@ static void as_exit_queue(elevator_t *e)
* initialize elevator private data (as_data), and alloc a arq for
* each request on the free lists
*/
static int as_init_queue(request_queue_t *q, elevator_t *e)
static void *as_init_queue(request_queue_t *q, elevator_t *e)
{
struct as_data *ad;
int i;
if (!arq_pool)
return -ENOMEM;
return NULL;
ad = kmalloc_node(sizeof(*ad), GFP_KERNEL, q->node);
if (!ad)
return -ENOMEM;
return NULL;
memset(ad, 0, sizeof(*ad));
ad->q = q; /* Identify what queue the data belongs to */
@ -1667,7 +1667,7 @@ static int as_init_queue(request_queue_t *q, elevator_t *e)
GFP_KERNEL, q->node);
if (!ad->hash) {
kfree(ad);
return -ENOMEM;
return NULL;
}
ad->arq_pool = mempool_create_node(BLKDEV_MIN_RQ, mempool_alloc_slab,
@ -1675,7 +1675,7 @@ static int as_init_queue(request_queue_t *q, elevator_t *e)
if (!ad->arq_pool) {
kfree(ad->hash);
kfree(ad);
return -ENOMEM;
return NULL;
}
/* anticipatory scheduling helpers */
@ -1696,14 +1696,13 @@ static int as_init_queue(request_queue_t *q, elevator_t *e)
ad->antic_expire = default_antic_expire;
ad->batch_expire[REQ_SYNC] = default_read_batch_expire;
ad->batch_expire[REQ_ASYNC] = default_write_batch_expire;
e->elevator_data = ad;
ad->current_batch_expires = jiffies + ad->batch_expire[REQ_SYNC];
ad->write_batch_count = ad->batch_expire[REQ_ASYNC] / 10;
if (ad->write_batch_count < 2)
ad->write_batch_count = 2;
return 0;
return ad;
}
/*

10
block/cfq-iosched.c
View File

@ -2251,14 +2251,14 @@ static void cfq_exit_queue(elevator_t *e)
kfree(cfqd);
}
static int cfq_init_queue(request_queue_t *q, elevator_t *e)
static void *cfq_init_queue(request_queue_t *q, elevator_t *e)
{
struct cfq_data *cfqd;
int i;
cfqd = kmalloc(sizeof(*cfqd), GFP_KERNEL);
if (!cfqd)
return -ENOMEM;
return NULL;
memset(cfqd, 0, sizeof(*cfqd));
@ -2288,8 +2288,6 @@ static int cfq_init_queue(request_queue_t *q, elevator_t *e)
for (i = 0; i < CFQ_QHASH_ENTRIES; i++)
INIT_HLIST_HEAD(&cfqd->cfq_hash[i]);
e->elevator_data = cfqd;
cfqd->queue = q;
cfqd->max_queued = q->nr_requests / 4;
@ -2316,14 +2314,14 @@ static int cfq_init_queue(request_queue_t *q, elevator_t *e)
cfqd->cfq_slice_async_rq = cfq_slice_async_rq;
cfqd->cfq_slice_idle = cfq_slice_idle;
return 0;
return cfqd;
out_crqpool:
kfree(cfqd->cfq_hash);
out_cfqhash:
kfree(cfqd->crq_hash);
out_crqhash:
kfree(cfqd);
return -ENOMEM;
return NULL;
}
static void cfq_slab_kill(void)

13
block/deadline-iosched.c
View File

@ -613,24 +613,24 @@ static void deadline_exit_queue(elevator_t *e)
* initialize elevator private data (deadline_data), and alloc a drq for
* each request on the free lists
*/
static int deadline_init_queue(request_queue_t *q, elevator_t *e)
static void *deadline_init_queue(request_queue_t *q, elevator_t *e)
{
struct deadline_data *dd;
int i;
if (!drq_pool)
return -ENOMEM;
return NULL;
dd = kmalloc_node(sizeof(*dd), GFP_KERNEL, q->node);
if (!dd)
return -ENOMEM;
return NULL;
memset(dd, 0, sizeof(*dd));
dd->hash = kmalloc_node(sizeof(struct list_head)*DL_HASH_ENTRIES,
GFP_KERNEL, q->node);
if (!dd->hash) {
kfree(dd);
return -ENOMEM;
return NULL;
}
dd->drq_pool = mempool_create_node(BLKDEV_MIN_RQ, mempool_alloc_slab,
@ -638,7 +638,7 @@ static int deadline_init_queue(request_queue_t *q, elevator_t *e)
if (!dd->drq_pool) {
kfree(dd->hash);
kfree(dd);
return -ENOMEM;
return NULL;
}
for (i = 0; i < DL_HASH_ENTRIES; i++)
@ -653,8 +653,7 @@ static int deadline_init_queue(request_queue_t *q, elevator_t *e)
dd->writes_starved = writes_starved;
dd->front_merges = 1;
dd->fifo_batch = fifo_batch;
e->elevator_data = dd;
return 0;
return dd;
}
static void deadline_put_request(request_queue_t *q, struct request *rq)

53
block/elevator.c
View File

@ -121,16 +121,16 @@ static struct elevator_type *elevator_get(const char *name)
return e;
}
static int elevator_attach(request_queue_t *q, struct elevator_queue *eq)
static void *elevator_init_queue(request_queue_t *q, struct elevator_queue *eq)
{
int ret = 0;
return eq->ops->elevator_init_fn(q, eq);
}
static void elevator_attach(request_queue_t *q, struct elevator_queue *eq,
void *data)
{
q->elevator = eq;
if (eq->ops->elevator_init_fn)
ret = eq->ops->elevator_init_fn(q, eq);
return ret;
eq->elevator_data = data;
}
static char chosen_elevator[16];
@ -181,6 +181,7 @@ int elevator_init(request_queue_t *q, char *name)
struct elevator_type *e = NULL;
struct elevator_queue *eq;
int ret = 0;
void *data;
INIT_LIST_HEAD(&q->queue_head);
q->last_merge = NULL;
@ -202,10 +203,13 @@ int elevator_init(request_queue_t *q, char *name)
if (!eq)
return -ENOMEM;
ret = elevator_attach(q, eq);
if (ret)
data = elevator_init_queue(q, eq);
if (!data) {
kobject_put(&eq->kobj);
return -ENOMEM;
}
elevator_attach(q, eq, data);
return ret;
}
@ -722,13 +726,16 @@ int elv_register_queue(struct request_queue *q)
return error;
}
void elv_unregister_queue(struct request_queue *q)
static void __elv_unregister_queue(elevator_t *e)
{
if (q) {
elevator_t *e = q->elevator;
kobject_uevent(&e->kobj, KOBJ_REMOVE);
kobject_del(&e->kobj);
}
}
void elv_unregister_queue(struct request_queue *q)
{
if (q)
__elv_unregister_queue(q->elevator);
}
int elv_register(struct elevator_type *e)
@ -780,6 +787,7 @@ EXPORT_SYMBOL_GPL(elv_unregister);
static int elevator_switch(request_queue_t *q, struct elevator_type *new_e)
{
elevator_t *old_elevator, *e;
void *data;
/*
* Allocate new elevator
@ -788,6 +796,12 @@ static int elevator_switch(request_queue_t *q, struct elevator_type *new_e)
if (!e)
return 0;
data = elevator_init_queue(q, e);
if (!data) {
kobject_put(&e->kobj);
return 0;
}
/*
* Turn on BYPASS and drain all requests w/ elevator private data
*/
@ -806,19 +820,19 @@ static int elevator_switch(request_queue_t *q, struct elevator_type *new_e)
elv_drain_elevator(q);
}
spin_unlock_irq(q->queue_lock);
/*
* unregister old elevator data
* Remember old elevator.
*/
elv_unregister_queue(q);
old_elevator = q->elevator;
/*
* attach and start new elevator
*/
if (elevator_attach(q, e))
goto fail;
elevator_attach(q, e, data);
spin_unlock_irq(q->queue_lock);
__elv_unregister_queue(old_elevator);
if (elv_register_queue(q))
goto fail_register;
@ -837,7 +851,6 @@ fail_register:
*/
elevator_exit(e);
e = NULL;
fail:
q->elevator = old_elevator;
elv_register_queue(q);
clear_bit(QUEUE_FLAG_ELVSWITCH, &q->queue_flags);

7
block/noop-iosched.c
View File

@ -65,16 +65,15 @@ noop_latter_request(request_queue_t *q, struct request *rq)
return list_entry(rq->queuelist.next, struct request, queuelist);
}
static int noop_init_queue(request_queue_t *q, elevator_t *e)
static void *noop_init_queue(request_queue_t *q, elevator_t *e)
{
struct noop_data *nd;
nd = kmalloc(sizeof(*nd), GFP_KERNEL);
if (!nd)
return -ENOMEM;
return NULL;
INIT_LIST_HEAD(&nd->queue);
e->elevator_data = nd;
return 0;
return nd;
}
static void noop_exit_queue(elevator_t *e)

3
drivers/acpi/processor_perflib.c
View File

@ -577,6 +577,8 @@ acpi_processor_register_performance(struct acpi_processor_performance
return_VALUE(-EBUSY);
}
WARN_ON(!performance);
pr->performance = performance;
if (acpi_processor_get_performance_info(pr)) {
@ -609,6 +611,7 @@ acpi_processor_unregister_performance(struct acpi_processor_performance
return_VOID;
}
if (pr->performance)
kfree(pr->performance->states);
pr->performance = NULL;

2
drivers/char/Makefile
View File

@ -41,9 +41,9 @@ obj-$(CONFIG_N_HDLC) += n_hdlc.o
obj-$(CONFIG_AMIGA_BUILTIN_SERIAL) += amiserial.o
obj-$(CONFIG_SX) += sx.o generic_serial.o
obj-$(CONFIG_RIO) += rio/ generic_serial.o
obj-$(CONFIG_HVC_DRIVER) += hvc_console.o
obj-$(CONFIG_HVC_CONSOLE) += hvc_vio.o hvsi.o
obj-$(CONFIG_HVC_RTAS) += hvc_rtas.o
obj-$(CONFIG_HVC_DRIVER) += hvc_console.o
obj-$(CONFIG_RAW_DRIVER) += raw.o
obj-$(CONFIG_SGI_SNSC) += snsc.o snsc_event.o
obj-$(CONFIG_MMTIMER) += mmtimer.o

4
drivers/char/n_tty.c
View File

@ -1384,8 +1384,10 @@ do_it_again:
* longer than TTY_THRESHOLD_UNTHROTTLE in canonical mode,
* we won't get any more characters.
*/
if (n_tty_chars_in_buffer(tty) <= TTY_THRESHOLD_UNTHROTTLE)
if (n_tty_chars_in_buffer(tty) <= TTY_THRESHOLD_UNTHROTTLE) {
n_tty_set_room(tty);
check_unthrottle(tty);
}
if (b - buf >= minimum)
break;

2
drivers/message/fusion/mptspi.c
View File

@ -831,6 +831,7 @@ mptspi_ioc_reset(MPT_ADAPTER *ioc, int reset_phase)
return rc;
}
#ifdef CONFIG_PM
/*
* spi module resume handler
*/
@ -846,6 +847,7 @@ mptspi_resume(struct pci_dev *pdev)
return rc;
}
#endif
/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/

70
drivers/message/i2o/exec-osm.c
View File

@ -55,6 +55,7 @@ struct i2o_exec_wait {
u32 m; /* message id */
struct i2o_message *msg; /* pointer to the reply message */
struct list_head list; /* node in global wait list */
spinlock_t lock; /* lock before modifying */
};
/* Work struct needed to handle LCT NOTIFY replies */
@ -87,6 +88,7 @@ static struct i2o_exec_wait *i2o_exec_wait_alloc(void)
return NULL;
INIT_LIST_HEAD(&wait->list);
spin_lock_init(&wait->lock);
return wait;
};
@ -125,6 +127,7 @@ int i2o_msg_post_wait_mem(struct i2o_controller *c, struct i2o_message *msg,
DECLARE_WAIT_QUEUE_HEAD(wq);
struct i2o_exec_wait *wait;
static u32 tcntxt = 0x80000000;
long flags;
int rc = 0;
wait = i2o_exec_wait_alloc();
@ -146,33 +149,28 @@ int i2o_msg_post_wait_mem(struct i2o_controller *c, struct i2o_message *msg,
wait->tcntxt = tcntxt++;
msg->u.s.tcntxt = cpu_to_le32(wait->tcntxt);
wait->wq = &wq;
/*
* we add elements to the head, because if a entry in the list will
* never be removed, we have to iterate over it every time
*/
list_add(&wait->list, &i2o_exec_wait_list);
/*
* Post the message to the controller. At some point later it will
* return. If we time out before it returns then complete will be zero.
*/
i2o_msg_post(c, msg);
if (!wait->complete) {
wait->wq = &wq;
/*
* we add elements add the head, because if a entry in the list
* will never be removed, we have to iterate over it every time
*/
list_add(&wait->list, &i2o_exec_wait_list);
wait_event_interruptible_timeout(wq, wait->complete, timeout * HZ);
wait_event_interruptible_timeout(wq, wait->complete,
timeout * HZ);
spin_lock_irqsave(&wait->lock, flags);
wait->wq = NULL;
}
barrier();
if (wait->complete) {
if (wait->complete)
rc = le32_to_cpu(wait->msg->body[0]) >> 24;
i2o_flush_reply(c, wait->m);
i2o_exec_wait_free(wait);
} else {
else {
/*
* We cannot remove it now. This is important. When it does
* terminate (which it must do if the controller has not
@ -186,6 +184,13 @@ int i2o_msg_post_wait_mem(struct i2o_controller *c, struct i2o_message *msg,
rc = -ETIMEDOUT;
}
spin_unlock_irqrestore(&wait->lock, flags);
if (rc != -ETIMEDOUT) {
i2o_flush_reply(c, wait->m);
i2o_exec_wait_free(wait);
}
return rc;
};
@ -213,7 +218,6 @@ static int i2o_msg_post_wait_complete(struct i2o_controller *c, u32 m,
{
struct i2o_exec_wait *wait, *tmp;
unsigned long flags;
static spinlock_t lock = SPIN_LOCK_UNLOCKED;
int rc = 1;
/*
@ -223,23 +227,24 @@ static int i2o_msg_post_wait_complete(struct i2o_controller *c, u32 m,
* already expired. Not much we can do about that except log it for
* debug purposes, increase timeout, and recompile.
*/
spin_lock_irqsave(&lock, flags);
list_for_each_entry_safe(wait, tmp, &i2o_exec_wait_list, list) {
if (wait->tcntxt == context) {
list_del(&wait->list);
spin_lock_irqsave(&wait->lock, flags);
spin_unlock_irqrestore(&lock, flags);
list_del(&wait->list);
wait->m = m;
wait->msg = msg;
wait->complete = 1;
barrier();
if (wait->wq) {
wake_up_interruptible(wait->wq);
if (wait->wq)
rc = 0;
} else {
else
rc = -1;
spin_unlock_irqrestore(&wait->lock, flags);
if (rc) {
struct device *dev;
dev = &c->pdev->dev;
@ -248,15 +253,13 @@ static int i2o_msg_post_wait_complete(struct i2o_controller *c, u32 m,
c->name);
i2o_dma_free(dev, &wait->dma);
i2o_exec_wait_free(wait);
rc = -1;
}
} else
wake_up_interruptible(wait->wq);
return rc;
}
}
spin_unlock_irqrestore(&lock, flags);
osm_warn("%s: Bogus reply in POST WAIT (tr-context: %08x)!\n", c->name,
context);
@ -322,14 +325,9 @@ static DEVICE_ATTR(product_id, S_IRUGO, i2o_exec_show_product_id, NULL);
static int i2o_exec_probe(struct device *dev)
{
struct i2o_device *i2o_dev = to_i2o_device(dev);
struct i2o_controller *c = i2o_dev->iop;
i2o_event_register(i2o_dev, &i2o_exec_driver, 0, 0xffffffff);
c->exec = i2o_dev;
i2o_exec_lct_notify(c, c->lct->change_ind + 1);
device_create_file(dev, &dev_attr_vendor_id);
device_create_file(dev, &dev_attr_product_id);
@ -523,6 +521,8 @@ static int i2o_exec_lct_notify(struct i2o_controller *c, u32 change_ind)
struct device *dev;
struct i2o_message *msg;
down(&c->lct_lock);
dev = &c->pdev->dev;
if (i2o_dma_realloc
@ -545,6 +545,8 @@ static int i2o_exec_lct_notify(struct i2o_controller *c, u32 change_ind)
i2o_msg_post(c, msg);
up(&c->lct_lock);
return 0;
};

4
drivers/message/i2o/iop.c
View File

@ -804,8 +804,6 @@ void i2o_iop_remove(struct i2o_controller *c)
/* Ask the IOP to switch to RESET state */
i2o_iop_reset(c);
put_device(&c->device);
}
/**
@ -1059,7 +1057,7 @@ struct i2o_controller *i2o_iop_alloc(void)
snprintf(poolname, sizeof(poolname), "i2o_%s_msg_inpool", c->name);
if (i2o_pool_alloc
(&c->in_msg, poolname, I2O_INBOUND_MSG_FRAME_SIZE * 4,
(&c->in_msg, poolname, I2O_INBOUND_MSG_FRAME_SIZE * 4 + sizeof(u32),
I2O_MSG_INPOOL_MIN)) {
kfree(c);
return ERR_PTR(-ENOMEM);

46
drivers/net/sky2.c
View File

@ -187,12 +187,11 @@ static u16 gm_phy_read(struct sky2_hw *hw, unsigned port, u16 reg)
return v;
}
static int sky2_set_power_state(struct sky2_hw *hw, pci_power_t state)
static void sky2_set_power_state(struct sky2_hw *hw, pci_power_t state)
{
u16 power_control;
u32 reg1;
int vaux;
int ret = 0;
pr_debug("sky2_set_power_state %d\n", state);
sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
@ -275,12 +274,10 @@ static int sky2_set_power_state(struct sky2_hw *hw, pci_power_t state)
break;
default:
printk(KERN_ERR PFX "Unknown power state %d\n", state);
ret = -1;
}
sky2_pci_write16(hw, hw->pm_cap + PCI_PM_CTRL, power_control);
sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
return ret;
}
static void sky2_phy_reset(struct sky2_hw *hw, unsigned port)
@ -2164,6 +2161,13 @@ static void sky2_descriptor_error(struct sky2_hw *hw, unsigned port,
/* If idle then force a fake soft NAPI poll once a second
* to work around cases where sharing an edge triggered interrupt.
*/
static inline void sky2_idle_start(struct sky2_hw *hw)
{
if (idle_timeout > 0)
mod_timer(&hw->idle_timer,
jiffies + msecs_to_jiffies(idle_timeout));
}
static void sky2_idle(unsigned long arg)
{
struct sky2_hw *hw = (struct sky2_hw *) arg;
@ -2183,6 +2187,9 @@ static int sky2_poll(struct net_device *dev0, int *budget)
int work_done = 0;
u32 status = sky2_read32(hw, B0_Y2_SP_EISR);
if (!~status)
goto out;
if (status & Y2_IS_HW_ERR)
sky2_hw_intr(hw);
@ -2219,7 +2226,7 @@ static int sky2_poll(struct net_device *dev0, int *budget)
if (sky2_more_work(hw))
return 1;
out:
netif_rx_complete(dev0);
sky2_read32(hw, B0_Y2_SP_LISR);
@ -3350,9 +3357,7 @@ static int __devinit sky2_probe(struct pci_dev *pdev,
sky2_write32(hw, B0_IMSK, Y2_IS_BASE);
setup_timer(&hw->idle_timer, sky2_idle, (unsigned long) hw);
if (idle_timeout > 0)
mod_timer(&hw->idle_timer,
jiffies + msecs_to_jiffies(idle_timeout));
sky2_idle_start(hw);
pci_set_drvdata(pdev, hw);
@ -3425,8 +3430,14 @@ static int sky2_suspend(struct pci_dev *pdev, pm_message_t state)
{
struct sky2_hw *hw = pci_get_drvdata(pdev);
int i;
pci_power_t pstate = pci_choose_state(pdev, state);
for (i = 0; i < 2; i++) {
if (!(pstate == PCI_D3hot || pstate == PCI_D3cold))
return -EINVAL;
del_timer_sync(&hw->idle_timer);
for (i = 0; i < hw->ports; i++) {
struct net_device *dev = hw->dev[i];
if (dev) {
@ -3438,7 +3449,10 @@ static int sky2_suspend(struct pci_dev *pdev, pm_message_t state)
}
}
return sky2_set_power_state(hw, pci_choose_state(pdev, state));
sky2_write32(hw, B0_IMSK, 0);
pci_save_state(pdev);
sky2_set_power_state(hw, pstate);
return 0;
}
static int sky2_resume(struct pci_dev *pdev)
@ -3448,15 +3462,15 @@ static int sky2_resume(struct pci_dev *pdev)
pci_restore_state(pdev);
pci_enable_wake(pdev, PCI_D0, 0);
err = sky2_set_power_state(hw, PCI_D0);
if (err)
goto out;
sky2_set_power_state(hw, PCI_D0);
err = sky2_reset(hw);
if (err)
goto out;
for (i = 0; i < 2; i++) {
sky2_write32(hw, B0_IMSK, Y2_IS_BASE);
for (i = 0; i < hw->ports; i++) {
struct net_device *dev = hw->dev[i];
if (dev && netif_running(dev)) {
netif_device_attach(dev);
@ -3465,10 +3479,12 @@ static int sky2_resume(struct pci_dev *pdev)
printk(KERN_ERR PFX "%s: could not up: %d\n",
dev->name, err);
dev_close(dev);
break;
goto out;
}
}
}
sky2_idle_start(hw);
out:
return err;
}

114
drivers/net/tg3.c
View File

@ -69,8 +69,8 @@
#define DRV_MODULE_NAME "tg3"
#define PFX DRV_MODULE_NAME ": "
#define DRV_MODULE_VERSION "3.58"
#define DRV_MODULE_RELDATE "May 22, 2006"
#define DRV_MODULE_VERSION "3.59"
#define DRV_MODULE_RELDATE "June 8, 2006"
#define TG3_DEF_MAC_MODE 0
#define TG3_DEF_RX_MODE 0
@ -4485,7 +4485,6 @@ static void tg3_disable_nvram_access(struct tg3 *tp)
/* tp->lock is held. */
static void tg3_write_sig_pre_reset(struct tg3 *tp, int kind)
{
if (!(tp->tg3_flags2 & TG3_FLG2_SUN_570X))
tg3_write_mem(tp, NIC_SRAM_FIRMWARE_MBOX,
NIC_SRAM_FIRMWARE_MBOX_MAGIC1);
@ -4568,13 +4567,12 @@ static int tg3_chip_reset(struct tg3 *tp)
void (*write_op)(struct tg3 *, u32, u32);
int i;
if (!(tp->tg3_flags2 & TG3_FLG2_SUN_570X)) {
tg3_nvram_lock(tp);
/* No matching tg3_nvram_unlock() after this because
* chip reset below will undo the nvram lock.
*/
tp->nvram_lock_cnt = 0;
}
if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5752 ||
GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5755 ||
@ -4727,7 +4725,6 @@ static int tg3_chip_reset(struct tg3 *tp)
tw32_f(MAC_MODE, 0);
udelay(40);
if (!(tp->tg3_flags2 & TG3_FLG2_SUN_570X)) {
/* Wait for firmware initialization to complete. */
for (i = 0; i < 100000; i++) {
tg3_read_mem(tp, NIC_SRAM_FIRMWARE_MBOX, &val);
@ -4735,12 +4732,18 @@ static int tg3_chip_reset(struct tg3 *tp)
break;
udelay(10);
}
if (i >= 100000) {
printk(KERN_ERR PFX "tg3_reset_hw timed out for %s, "
"firmware will not restart magic=%08x\n",
tp->dev->name, val);
return -ENODEV;
}
/* Chip might not be fitted with firmare. Some Sun onboard
* parts are configured like that. So don't signal the timeout
* of the above loop as an error, but do report the lack of
* running firmware once.
*/
if (i >= 100000 &&
!(tp->tg3_flags2 & TG3_FLG2_NO_FWARE_REPORTED)) {
tp->tg3_flags2 |= TG3_FLG2_NO_FWARE_REPORTED;
printk(KERN_INFO PFX "%s: No firmware running.\n",
tp->dev->name);
}
if ((tp->tg3_flags2 & TG3_FLG2_PCI_EXPRESS) &&
@ -9075,9 +9078,6 @@ static void __devinit tg3_nvram_init(struct tg3 *tp)
{
int j;
if (tp->tg3_flags2 & TG3_FLG2_SUN_570X)
return;
tw32_f(GRC_EEPROM_ADDR,
(EEPROM_ADDR_FSM_RESET |
(EEPROM_DEFAULT_CLOCK_PERIOD <<
@ -9210,11 +9210,6 @@ static int tg3_nvram_read(struct tg3 *tp, u32 offset, u32 *val)
{
int ret;
if (tp->tg3_flags2 & TG3_FLG2_SUN_570X) {
printk(KERN_ERR PFX "Attempt to do nvram_read on Sun 570X\n");
return -EINVAL;
}
if (!(tp->tg3_flags & TG3_FLAG_NVRAM))
return tg3_nvram_read_using_eeprom(tp, offset, val);
@ -9447,11 +9442,6 @@ static int tg3_nvram_write_block(struct tg3 *tp, u32 offset, u32 len, u8 *buf)
{
int ret;
if (tp->tg3_flags2 & TG3_FLG2_SUN_570X) {
printk(KERN_ERR PFX "Attempt to do nvram_write on Sun 570X\n");
return -EINVAL;
}
if (tp->tg3_flags & TG3_FLAG_EEPROM_WRITE_PROT) {
tw32_f(GRC_LOCAL_CTRL, tp->grc_local_ctrl &
~GRC_LCLCTRL_GPIO_OUTPUT1);
@ -9578,15 +9568,19 @@ static void __devinit tg3_get_eeprom_hw_cfg(struct tg3 *tp)
pci_write_config_dword(tp->pdev, TG3PCI_MISC_HOST_CTRL,
tp->misc_host_ctrl);
/* The memory arbiter has to be enabled in order for SRAM accesses
* to succeed. Normally on powerup the tg3 chip firmware will make
* sure it is enabled, but other entities such as system netboot
* code might disable it.
*/
val = tr32(MEMARB_MODE);
tw32(MEMARB_MODE, val | MEMARB_MODE_ENABLE);
tp->phy_id = PHY_ID_INVALID;
tp->led_ctrl = LED_CTRL_MODE_PHY_1;
/* Do not even try poking around in here on Sun parts. */
if (tp->tg3_flags2 & TG3_FLG2_SUN_570X) {
/* All SUN chips are built-in LOMs. */
/* Assume an onboard device by default. */
tp->tg3_flags |= TG3_FLAG_EEPROM_WRITE_PROT;
return;
}
tg3_read_mem(tp, NIC_SRAM_DATA_SIG, &val);
if (val == NIC_SRAM_DATA_SIG_MAGIC) {
@ -9686,6 +9680,8 @@ static void __devinit tg3_get_eeprom_hw_cfg(struct tg3 *tp)
if (nic_cfg & NIC_SRAM_DATA_CFG_EEPROM_WP)
tp->tg3_flags |= TG3_FLAG_EEPROM_WRITE_PROT;
else
tp->tg3_flags &= ~TG3_FLAG_EEPROM_WRITE_PROT;
if (nic_cfg & NIC_SRAM_DATA_CFG_ASF_ENABLE) {
tp->tg3_flags |= TG3_FLAG_ENABLE_ASF;
@ -9834,16 +9830,8 @@ static void __devinit tg3_read_partno(struct tg3 *tp)
int i;
u32 magic;
if (tp->tg3_flags2 & TG3_FLG2_SUN_570X) {
/* Sun decided not to put the necessary bits in the
* NVRAM of their onboard tg3 parts :(
*/
strcpy(tp->board_part_number, "Sun 570X");
return;
}
if (tg3_nvram_read_swab(tp, 0x0, &magic))
return;
goto out_not_found;
if (magic == TG3_EEPROM_MAGIC) {
for (i = 0; i < 256; i += 4) {
@ -9874,6 +9862,9 @@ static void __devinit tg3_read_partno(struct tg3 *tp)
break;
msleep(1);
}
if (!(tmp16 & 0x8000))
goto out_not_found;
pci_read_config_dword(tp->pdev, vpd_cap + PCI_VPD_DATA,
&tmp);
tmp = cpu_to_le32(tmp);
@ -9965,37 +9956,6 @@ static void __devinit tg3_read_fw_ver(struct tg3 *tp)
}
}
#ifdef CONFIG_SPARC64
static int __devinit tg3_is_sun_570X(struct tg3 *tp)
{
struct pci_dev *pdev = tp->pdev;
struct pcidev_cookie *pcp = pdev->sysdata;
if (pcp != NULL) {
int node = pcp->prom_node;
u32 venid;
int err;
err = prom_getproperty(node, "subsystem-vendor-id",
(char *) &venid, sizeof(venid));
if (err == 0 || err == -1)
return 0;
if (venid == PCI_VENDOR_ID_SUN)
return 1;
/* TG3 chips onboard the SunBlade-2500 don't have the
* subsystem-vendor-id set to PCI_VENDOR_ID_SUN but they
* are distinguishable from non-Sun variants by being
* named "network" by the firmware. Non-Sun cards will
* show up as being named "ethernet".
*/
if (!strcmp(pcp->prom_name, "network"))
return 1;
}
return 0;
}
#endif
static int __devinit tg3_get_invariants(struct tg3 *tp)
{
static struct pci_device_id write_reorder_chipsets[] = {
@ -10012,11 +9972,6 @@ static int __devinit tg3_get_invariants(struct tg3 *tp)
u16 pci_cmd;
int err;
#ifdef CONFIG_SPARC64
if (tg3_is_sun_570X(tp))
tp->tg3_flags2 |= TG3_FLG2_SUN_570X;
#endif
/* Force memory write invalidate off. If we leave it on,
* then on 5700_BX chips we have to enable a workaround.
* The workaround is to set the TG3PCI_DMA_RW_CTRL boundary
@ -10312,8 +10267,7 @@ static int __devinit tg3_get_invariants(struct tg3 *tp)
if (tp->write32 == tg3_write_indirect_reg32 ||
((tp->tg3_flags & TG3_FLAG_PCIX_MODE) &&
(GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5700 ||
GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5701)) ||
(tp->tg3_flags2 & TG3_FLG2_SUN_570X))
GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5701)))
tp->tg3_flags |= TG3_FLAG_SRAM_USE_CONFIG;
/* Get eeprom hw config before calling tg3_set_power_state().
@ -10594,8 +10548,7 @@ static int __devinit tg3_get_device_address(struct tg3 *tp)
#endif
mac_offset = 0x7c;
if ((GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5704 &&
!(tp->tg3_flags & TG3_FLG2_SUN_570X)) ||
if ((GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5704) ||
(tp->tg3_flags2 & TG3_FLG2_5780_CLASS)) {
if (tr32(TG3PCI_DUAL_MAC_CTRL) & DUAL_MAC_CTRL_ID)
mac_offset = 0xcc;
@ -10622,8 +10575,7 @@ static int __devinit tg3_get_device_address(struct tg3 *tp)
}
if (!addr_ok) {
/* Next, try NVRAM. */
if (!(tp->tg3_flags & TG3_FLG2_SUN_570X) &&
!tg3_nvram_read(tp, mac_offset + 0, &hi) &&
if (!tg3_nvram_read(tp, mac_offset + 0, &hi) &&
!tg3_nvram_read(tp, mac_offset + 4, &lo)) {
dev->dev_addr[0] = ((hi >> 16) & 0xff);
dev->dev_addr[1] = ((hi >> 24) & 0xff);

3
drivers/net/tg3.h
View File

@ -2184,7 +2184,7 @@ struct tg3 {
#define TG3_FLAG_INIT_COMPLETE 0x80000000
u32 tg3_flags2;
#define TG3_FLG2_RESTART_TIMER 0x00000001
#define TG3_FLG2_SUN_570X 0x00000002
/* 0x00000002 available */
#define TG3_FLG2_NO_ETH_WIRE_SPEED 0x00000004
#define TG3_FLG2_IS_5788 0x00000008
#define TG3_FLG2_MAX_RXPEND_64 0x00000010
@ -2216,6 +2216,7 @@ struct tg3 {
#define TG3_FLG2_HW_TSO (TG3_FLG2_HW_TSO_1 | TG3_FLG2_HW_TSO_2)
#define TG3_FLG2_1SHOT_MSI 0x10000000
#define TG3_FLG2_PHY_JITTER_BUG 0x20000000
#define TG3_FLG2_NO_FWARE_REPORTED 0x40000000
u32 split_mode_max_reqs;
#define SPLIT_MODE_5704_MAX_REQ 3

13
drivers/pci/pci-driver.c
View File

@ -285,9 +285,9 @@ static int pci_device_suspend(struct device * dev, pm_message_t state)
* Default resume method for devices that have no driver provided resume,
* or not even a driver at all.
*/
static void pci_default_resume(struct pci_dev *pci_dev)
static int pci_default_resume(struct pci_dev *pci_dev)
{
int retval;
int retval = 0;
/* restore the PCI config space */
pci_restore_state(pci_dev);
@ -297,18 +297,21 @@ static void pci_default_resume(struct pci_dev *pci_dev)
/* if the device was busmaster before the suspend, make it busmaster again */
if (pci_dev->is_busmaster)
pci_set_master(pci_dev);
return retval;
}
static int pci_device_resume(struct device * dev)
{
int error;
struct pci_dev * pci_dev = to_pci_dev(dev);
struct pci_driver * drv = pci_dev->driver;
if (drv && drv->resume)
drv->resume(pci_dev);
error = drv->resume(pci_dev);
else
pci_default_resume(pci_dev);
return 0;
error = pci_default_resume(pci_dev);
return error;
}
static void pci_device_shutdown(struct device *dev)

18
drivers/pci/pci.c
View File

@ -460,9 +460,23 @@ int
pci_restore_state(struct pci_dev *dev)
{
int i;
int val;
for (i = 0; i < 16; i++)
pci_write_config_dword(dev,i * 4, dev->saved_config_space[i]);
/*
* The Base Address register should be programmed before the command
* register(s)
*/
for (i = 15; i >= 0; i--) {
pci_read_config_dword(dev, i * 4, &val);
if (val != dev->saved_config_space[i]) {
printk(KERN_DEBUG "PM: Writing back config space on "
"device %s at offset %x (was %x, writing %x)\n",
pci_name(dev), i,
val, (int)dev->saved_config_space[i]);
pci_write_config_dword(dev,i * 4,
dev->saved_config_space[i]);
}
}
pci_restore_msi_state(dev);
pci_restore_msix_state(dev);
return 0;

3
drivers/scsi/sata_mv.c
View File

@ -2035,6 +2035,7 @@ static void mv_phy_reset(struct ata_port *ap)
static void mv_eng_timeout(struct ata_port *ap)
{
struct ata_queued_cmd *qc;
unsigned long flags;
printk(KERN_ERR "ata%u: Entering mv_eng_timeout\n",ap->id);
DPRINTK("All regs @ start of eng_timeout\n");
@ -2046,8 +2047,10 @@ static void mv_eng_timeout(struct ata_port *ap)
ap->host_set->mmio_base, ap, qc, qc->scsicmd,
&qc->scsicmd->cmnd);
spin_lock_irqsave(&ap->host_set->lock, flags);
mv_err_intr(ap, 0);
mv_stop_and_reset(ap);
spin_unlock_irqrestore(&ap->host_set->lock, flags);
WARN_ON(!(qc->flags & ATA_QCFLAG_ACTIVE));
if (qc->flags & ATA_QCFLAG_ACTIVE) {

3
drivers/usb/host/ohci-pxa27x.c
View File

@ -185,6 +185,9 @@ int usb_hcd_pxa27x_probe (const struct hc_driver *driver, struct platform_device
/* Select Power Management Mode */
pxa27x_ohci_select_pmm(inf->port_mode);
if (inf->power_budget)
hcd->power_budget = inf->power_budget;
ohci_hcd_init(hcd_to_ohci(hcd));
retval = usb_add_hcd(hcd, pdev->resource[1].start, SA_INTERRUPT);

2
drivers/video/console/fbcon.c
View File

@ -1745,7 +1745,7 @@ static int fbcon_scroll(struct vc_data *vc, int t, int b, int dir,
fbcon_redraw_move(vc, p, 0, t, count);
ypan_up_redraw(vc, t, count);
if (vc->vc_rows - b > 0)
fbcon_redraw_move(vc, p, b - count,
fbcon_redraw_move(vc, p, b,
vc->vc_rows - b, b);
} else
fbcon_redraw_move(vc, p, t + count, b - t - count, t);

3
fs/debugfs/inode.c
View File

@ -67,12 +67,13 @@ static struct inode *debugfs_get_inode(struct super_block *sb, int mode, dev_t d
static int debugfs_mknod(struct inode *dir, struct dentry *dentry,
int mode, dev_t dev)
{
struct inode *inode = debugfs_get_inode(dir->i_sb, mode, dev);
struct inode *inode;
int error = -EPERM;
if (dentry->d_inode)
return -EEXIST;
inode = debugfs_get_inode(dir->i_sb, mode, dev);
if (inode) {
d_instantiate(dentry, inode);
dget(dentry);

2
include/asm-arm/arch-pxa/ohci.h
View File

@ -11,6 +11,8 @@ struct pxaohci_platform_data {
#define PMM_NPS_MODE 1
#define PMM_GLOBAL_MODE 2
#define PMM_PERPORT_MODE 3
int power_budget;
};
extern void pxa_set_ohci_info(struct pxaohci_platform_data *info);

15
include/asm-s390/futex.h
View File

@ -11,23 +11,24 @@
#define __futex_atomic_fixup \
".section __ex_table,\"a\"\n" \
" .align 4\n" \
" .long 0b,2b,1b,2b\n" \
" .long 0b,4b,2b,4b,3b,4b\n" \
".previous"
#else /* __s390x__ */
#define __futex_atomic_fixup \
".section __ex_table,\"a\"\n" \
" .align 8\n" \
" .quad 0b,2b,1b,2b\n" \
" .quad 0b,4b,2b,4b,3b,4b\n" \
".previous"
#endif /* __s390x__ */
#define __futex_atomic_op(insn, ret, oldval, newval, uaddr, oparg) \
asm volatile(" l %1,0(%6)\n" \
"0: " insn \
" cs %1,%2,0(%6)\n" \
"1: jl 0b\n" \
asm volatile(" sacf 256\n" \
"0: l %1,0(%6)\n" \
"1: " insn \
"2: cs %1,%2,0(%6)\n" \
"3: jl 1b\n" \
" lhi %0,0\n" \
"2:\n" \
"4: sacf 0\n" \
__futex_atomic_fixup \
: "=d" (ret), "=&d" (oldval), "=&d" (newval), \
"=m" (*uaddr) \

2
include/linux/elevator.h
View File

@ -21,7 +21,7 @@ typedef void (elevator_put_req_fn) (request_queue_t *, struct request *);
typedef void (elevator_activate_req_fn) (request_queue_t *, struct request *);
typedef void (elevator_deactivate_req_fn) (request_queue_t *, struct request *);
typedef int (elevator_init_fn) (request_queue_t *, elevator_t *);
typedef void *(elevator_init_fn) (request_queue_t *, elevator_t *);
typedef void (elevator_exit_fn) (elevator_t *);
struct elevator_ops

5
include/linux/i2o.h
View File

@ -1114,8 +1114,11 @@ static inline struct i2o_message *i2o_msg_get(struct i2o_controller *c)
mmsg->mfa = readl(c->in_port);
if (unlikely(mmsg->mfa >= c->in_queue.len)) {
u32 mfa = mmsg->mfa;
mempool_free(mmsg, c->in_msg.mempool);
if(mmsg->mfa == I2O_QUEUE_EMPTY)
if (mfa == I2O_QUEUE_EMPTY)
return ERR_PTR(-EBUSY);
return ERR_PTR(-EFAULT);
}

1
include/linux/mempolicy.h
View File

@ -36,6 +36,7 @@
#include <linux/nodemask.h>
struct vm_area_struct;
struct mm_struct;
#ifdef CONFIG_NUMA

2
include/linux/pci-acpi.h
View File

@ -50,7 +50,7 @@
extern acpi_status pci_osc_control_set(acpi_handle handle, u32 flags);
extern acpi_status pci_osc_support_set(u32 flags);
#else
#if !defined(acpi_status)
#if !defined(AE_ERROR)
typedef u32 acpi_status;
#define AE_ERROR (acpi_status) (0x0001)
#endif

2
mm/shmem.c
View File

@ -1780,6 +1780,7 @@ static int shmem_rmdir(struct inode *dir, struct dentry *dentry)
if (!simple_empty(dentry))
return -ENOTEMPTY;
dentry->d_inode->i_nlink--;
dir->i_nlink--;
return shmem_unlink(dir, dentry);
}
@ -2102,6 +2103,7 @@ static int shmem_fill_super(struct super_block *sb,
sb->s_blocksize_bits = PAGE_CACHE_SHIFT;
sb->s_magic = TMPFS_MAGIC;
sb->s_op = &shmem_ops;
sb->s_time_gran = 1;
inode = shmem_get_inode(sb, S_IFDIR | mode, 0);
if (!inode)

2
mm/vmscan.c
View File

@ -1061,7 +1061,7 @@ static unsigned long balance_pgdat(pg_data_t *pgdat, unsigned long nr_pages,
loop_again:
total_scanned = 0;
nr_reclaimed = 0;
sc.may_writepage = !laptop_mode,
sc.may_writepage = !laptop_mode;
sc.nr_mapped = read_page_state(nr_mapped);
inc_page_state(pageoutrun);

1
net/dccp/ackvec.c
View File

@ -452,6 +452,7 @@ found:
(unsigned long long)
avr->dccpavr_ack_ackno);
dccp_ackvec_throw_record(av, avr);
break;
}
/*
* If it wasn't received, continue scanning... we might

1
net/ipv4/ip_forward.c
View File

@ -116,6 +116,7 @@ sr_failed:
too_many_hops:
/* Tell the sender its packet died... */
IP_INC_STATS_BH(IPSTATS_MIB_INHDRERRORS);
icmp_send(skb, ICMP_TIME_EXCEEDED, ICMP_EXC_TTL, 0);
drop:
kfree_skb(skb);

4
net/ipv4/tcp_input.c
View File

@ -1649,7 +1649,7 @@ static void tcp_update_scoreboard(struct sock *sk, struct tcp_sock *tp)
* Hence, we can detect timed out packets during fast
* retransmit without falling to slow start.
*/
if (tcp_head_timedout(sk, tp)) {
if (!IsReno(tp) && tcp_head_timedout(sk, tp)) {
struct sk_buff *skb;
skb = tp->scoreboard_skb_hint ? tp->scoreboard_skb_hint
@ -1662,8 +1662,6 @@ static void tcp_update_scoreboard(struct sock *sk, struct tcp_sock *tp)
if (!(TCP_SKB_CB(skb)->sacked&TCPCB_TAGBITS)) {
TCP_SKB_CB(skb)->sacked |= TCPCB_LOST;
tp->lost_out += tcp_skb_pcount(skb);
if (IsReno(tp))
tcp_remove_reno_sacks(sk, tp, tcp_skb_pcount(skb) + 1);
/* clear xmit_retrans hint */
if (tp->retransmit_skb_hint &&