31 Oct, 2005
40 commits
-
Update SMC91x driver for m32r.
- Remove needless NONCACHE_OFFSET adjustment.
> [PATCH 2.6.14-rc4] m32r: NONCACHE_OFFSET in _port2addr
> Change _port2addr() not to add NONCACHE_OFFSET.
> Adding NONCACHE_OFFSET requires needless address adjusting by a driver
> using ioremap() like a SMC91x driver.- Fix lots of warnings as following:
/usr/src/ctest/git/kernel/drivers/net/smc91x.c: In function `smc_reset':
/usr/src/ctest/git/kernel/drivers/net/smc91x.c:324: warning: passing arg 2 of `_outw' makes integer from pointer without a cast
/usr/src/ctest/git/kernel/drivers/net/smc91x.c:325: warning: passing arg 2 of `_outw' makes integer from pointer without a cast
/usr/src/ctest/git/kernel/drivers/net/smc91x.c:341: warning: passing arg 2 of `_outw' makes integer from pointer without a cast
/usr/src/ctest/git/kernel/drivers/net/smc91x.c:342: warning: passing arg 2 of `_outw' makes integer from pointer without a cast
:
/usr/src/ctest/git/kernel/drivers/net/smc91x.c:1915: warning: passing arg 1 of `_inw' makes integer from pointer without a cast
/usr/src/ctest/git/kernel/drivers/net/smc91x.c:1915: warning: passing arg 1 of `_inw' makes integer from pointer without a castSigned-off-by: Hayato Fujiwara
Signed-off-by: Hirokazu Takata
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Change _port2addr() not to add NONCACHE_OFFSET. Adding NONCACHE_OFFSET
requires needless address adjusting by a driver using ioremap() like a
SMC91x driver.Signed-off-by: Hayato Fujiwara
Signed-off-by: Hirokazu Takata
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Fix warnings for #if directives.
Signed-off-by: Hirokazu Takata
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Remove unused instructions for debugging.
Signed-off-by: Naoto Sugai
Signed-off-by: Hirokazu Takata
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add pm_ops.valid callback, so only the available pm states show in
/sys/power/state. And this also makes an earlier states error report at
enter_state before we do actual suspend/resume.Signed-off-by: Shaohua Li
Acked-by: Pavel Machek
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The following patch simplifies the progress meter in disk.c:free_some_memory()
and makes disk.c:pm_suspend_disk() call device_resume() explicitly in the
suspend path.Signed-off-by: Rafael J. Wysocki
Acked-by: Pavel Machek
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The following patch merges two functions in a trivial way.
Signed-off-by: Rafael J. Wysocki
Acked-by: Pavel Machek
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Reduce number of ifdefs somehow, and fix whitespace a bit. No real code
changes.Signed-off-by: Pavel Machek
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Cleanup comments and remove unneccessary includes.
Signed-off-by: Pavel Machek
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The following patch makes swsusp use the PG_nosave and PG_nosave_free flags to
mark pages that should be freed in case of an error during resume.This allows us to simplify the code and to use swsusp_free() in all of the
swsusp's resume error paths, which makes them actually work.Signed-off-by: Rafael J. Wysocki
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Signed-off-by: Rafael J. Wysocki
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The following patch moves the functionality of swsusp related to creating and
handling the snapshot of memory to a separate file, snapshot.cThis should enable us to untangle the code in the future and eventually to
implement some parts of swsusp.c in the user space.The patch does not change the code.
Signed-off-by: Rafael J. Wysocki
Signed-off-by: Pavel Machek
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The following patch makes swsusp use PG_nosave and PG_nosave_free flags to
mark pages that should be freed after the state of the system has been
restored from the image (or in case of an error during suspend).This allows us to avoid storing metadata in swap twice and to reduce the
amount of memory needed by swsusp. Additionally, it allows us to simplify
the code by removing a couple of functions that are no longer necessary.Signed-off-by: Rafael J. Wysocki
Signed-off-by: Pavel Machek
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
cpufreq entries in sysfs should only be populated when CPU is online state.
When we either boot with maxcpus=x and then boot the other cpus by echoing
to sysfs online file, these entries should be created and destroyed when
CPU_DEAD is notified. Same treatement as cache entries under sysfs.We place the processor in the lowest frequency, so hw managed P-State
transitions can still work on the other threads to save power.Primary goal was to just make these directories appear/disapper dynamically.
There is one in this patch i had to do, which i really dont like myself but
probably best if someone handling the cpufreq infrastructure could give
this code right treatment if this is not acceptable. I guess its probably
good for the first cut.- Converting lock_cpu_hotplug()/unlock_cpu_hotplug() to disable/enable preempt.
The locking was smack in the middle of the notification path, when the
hotplug is already holding the lock. I tried another solution to avoid this
so avoid taking locks if we know we are from notification path. The solution
was getting very ugly and i decided this was probably good for this iteration
until someone who understands cpufreq could do a better job than me.(akpm: export cpucontrol to GPL modules: drivers/cpufreq/cpufreq_stats.c now
does lock_cpu_hotplug())Signed-off-by: Ashok Raj
Signed-off-by: Venkatesh Pallipadi
Cc: Dave Jones
Cc: Zwane Mwaikambo
Cc: Greg KH
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
cpu_sys_devices is redundant with the new API get_cpu_sysdev(). So nuking
this usage since its not needed.Signed-off-by: Ashok Raj
Signed-off-by: Venkatesh Pallipadi
Cc: Dave Jones
Cc: Zwane Mwaikambo
Cc: Greg KH
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
cpu cache entries should be populated only when cpu is online and removed
when they are logically offlined.Without which entries are not removed when cpu is offlined, or dont appear
when we boot with maxcpus=1 and then kick the rest of the cpus via echo 1
to the sysfs online file.- Changed __devinit to __cpuinit for consistency.
- Changed sysfs_driver_register to register_cpu_notifier.Signed-off-by: Ashok Raj
Signed-off-by: Venkatesh Pallipadi
Cc: Dave Jones
Cc: Zwane Mwaikambo
Cc: Greg KH
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Some modules creating sysfs entries under /sys/devices/system/cpu/cpuX/
need to know the parent sysfs entry to make devices under them. This will
just return the sysfs entry for a given cpu.sysfs entries showing under each cpu sysfs can be easily created if such
entries can be created by registering a sysfs driver for cpuclass. The
issue is when the entry is created the CPU may not be online, hence we
would need to defer the creation until the online notification comes.Current users: cache entries for Intel CPU's and cpufreq subsystem.
Signed-off-by: Ashok Raj
Signed-off-by: Venkatesh Pallipadi
Cc: Dave Jones
Cc: Zwane Mwaikambo
Cc: Greg KH
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This patch adds a check for the return value of acpi_find_root_pointer().
Without this patch systems without ACPI support such as QEMU crashes when
booting a NUMA kernel with CONFIG_ACPI_SRAT=y.Signed-off-by: Magnus Damm
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
After staring at mpparse.c for a little longer I noticed that when we hit
our limit of num_processors we are filtering out information about other
processors that we can still store.This patch just reorders the code so we store everything we can.
This should avoid the incorrect warning about our boot CPU not being listed
by the BIOS that we are now getting in the kexec on panic case, and it
should allow us to detect all apicid conflicts even when our physical
number of cpus exceeds maxcpus.Signed-off-by: Eric W. Biederman
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
o Removes the unnecessary call to local_irq_disable().
o Kdump was failing while second kernel was coming up. Check for presence
of boot cpu apic id was failing in (apic_id_registered), hence hitting
BUG().o This should not have failed because before calling setup_local_APIC(), it is
ensured that even if BIOS has not reported boot cpu, then hard set the
prence of it. Problem happens because of usage of hard_smp_processor_id()
which is hardcoded to zero in case of non SMP kernel. In kdump case second
kernel can boot on a cpu whose boot cpu id is not zero.o Using boot_cpu_physical_apicid instead to hard set the presence of boot cpu.
Signed-off-by: Vivek Goyal
Cc: "Eric W. Biederman"
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Signed-off-by: Ingo Molnar
Signed-off-by: Miklos Szeredi
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Handle 32-bit mtrr ioctls in the mtrr driver instead of the ia32
compatability layer.Signed-off-by: Brian Gerst
Cc: Andi Kleen
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
If VMX feature is available in the CPU, this patch will make it visible in
the /proc/cpuinfo with the cpuid detection.Signed-Off-By: Nitin A Kamble
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
It is dangerous to shutdown the apics in machine_crash_shutdown.
With my previous patch to initialize apics in init_IRQ we should be able to
boot a kernel without this. As long as we reinitialize the APICs we don't
care what state they were in during bootup.This should make machine_crash_shutdown noticeably more reliable.
Signed-off-by: Eric W. Biederman
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
All kinds of ugliness exists because we don't initialize
the apics during init_IRQs.
- We calibrate jiffies in non apic mode even when we are using apics.
- We have to have special code to initialize the apics when non-smp.
- The legacy i8259 must exist and be setup correctly, even
when we won't use it past initialization.
- The kexec on panic code must restore the state of the io_apics.
- init/main.c needs a special case for !smp smp_init on x86In addition to pure code movement I needed a couple
of non-obvious changes:
- Move setup_boot_APIC_clock into APIC_late_time_init for
simplicity.
- Use cpu_khz to generate a better approximation of loops_per_jiffies
so I can verify the timer interrupt is working.
- Call setup_apic_nmi_watchdog again after cpu_khz is initialized on
the boot cpu.Signed-off-by: Eric W. Biederman
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The per cpu nmi watchdog timer is based on an event counter. idle cpus
don't generate events so the NMI watchdog doesn't fire and the test to see
if the watchdog is working fails.- Add nmi_cpu_busy so idle cpus don't mess up the test.
- kmalloc prev_nmi_count to keep kernel stack usage bounded.
- Improve the error message on failure so there is enough
information to debug problems.Signed-off-by: Eric W. Biederman
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Currently we attempt to restore virtual wire mode on reboot, which only
works if we can figure out where the i8259 is connected. This is very
useful when we kexec another kernel and likely helpful when dealing with a
BIOS that make assumptions about how the system is setup.Since the acpi MADT table does not provide the location where the i8259 is
connected we have to look at the hardware to figure it out.Most systems have the i8259 connected the local apic of the cpu so won't be
affected but people running Opteron and some serverworks chipsets should be
able to use kexec now.In addition this patch removes the hard coded assumption that the io_apic
that delivers isa interrups is always known to the kernel as io_apic 0. As
there does not appear to be anything to guarantee that assumption is true.Signed-off-by: Eric W. Biederman
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This is platform code update for ES7000: disables IRQ overrides for the
recent ES7000 (Rascal/Zorro), cleans up the compile warning. The patch
only affects the ES7000 subarch.Signed-off-by:
Acked-by: Zwane Mwaikambo
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The code that prints the cache size assumes that L3 always lives in chipset
and is shared across CPUs. Which is not really true.I think all the cachesizes reported by cpuid are in the processor itself.
The attached patch changes the code to reflect that.Signed-off-by: Venkatesh Pallipadi
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This was reported because someone was getting oopses reading /proc/iomem.
It was tracked down to a zero-sized 'struct resource' entry which was
located right at 4GB.You need two conditions to hit this bug: a BIOS E820_RAM area starting at
exactly the boundary where you specify mem= (to get a zero-sized entry),
and for the legacy_init_iomem_resources() loop to skip that resource (which
only happens at exactly 4G).I think the killing zero-sized e820 entry is the easiest way to fix this.
Signed-off-by: Dave Hansen
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Hopefully fix http://bugzilla.kernel.org/show_bug.cgi?id=5235
Similar problem has been reported before here:
http://groups.google.com/group/linux.kernel/browse_thread/thread/def4ca19dbc3cd4/5cffbf349f2c87a4?tvc=2&q=Aleksey+Gorelov&hl=en#5cffbf349f2c87a4
and was related to bug in BIOS reporting 82C686 router compatible to 586.I suspect BIOS on this board has similar issue: reports VT8235 router to be
compatible with 586 one - which is obviously not true. Patch from the link
above has already incorporated in both 2.6 & 2.4 series, but might not work
in this particular case.Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Make P6 MCA initialization code complaint with guidelines in IA-32 SDM
Vol3. Bank 0 control register should not be set by OS and clear status
registers on all banks on reset.This will prevent false MCE alarms on the systems that has some non-MCE
information left-over in MC0_STATUS on reboot.Signed-off-by: Venkatesh Pallipadi
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add an accessor function for getting the per-CPU gdt. Callee must already
have the CPU.Signed-off-by: Zachary Amsden
Acked-by: Ingo Molnar
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The per-CPU initialization code is copying in bogus data into
thread->tls_array. Note that it copies &per_cpu(cpu_gdt_table, cpu), not
&per_cpu(cpu_gdt_table, cpu)[GDT_ENTRY_TLS_MIN). That is totally broken
and unnecessary. Make the initialization explicitly NULL.Signed-off-by: Zachary Amsden
Acked-by: Ingo Molnar
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The patch allows physical bring-up of new processors (not initially present
in the configuration) from facilities such as driver/utility implemented on
a platform. The actual method of making processors available is up to the
platform implementation.Signed-off-by: Natalie Protasevich
Cc: Shaohua Li
Cc: Ashok Raj
Cc: Zwane Mwaikambo
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Join together some common functions (pmd_page{,_kernel}) over 2level and
3level pages.Signed-off-by: Paolo 'Blaisorblade' Giarrusso
Acked-by: Hugh Dickins
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Initial internal version of Venki's cpuid(4) deterministic cache parameter
identification patch used static arrays of size MAX_CACHE_LEAVES. Final patch
which made to the base used dynamic array allocation, with this
MAX_CACHE_LEAVES limit hunk still in place.cpuid(4) already has a mechanism to find out the number of cache levels
implemented and there is no need for this hardcoded MAX_CACHE_LEAVES limit.So remove the MAX_CACHE_LEAVES limit from the routine which calculates the
number of cache levels using cpuid(4)Signed-off-by: Suresh Siddha
Cc: Venkatesh Pallipadi
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
There exists a field io_bitmap_owner in the TSS that is only checked, but
never set to anything else but NULL.Signed-off-by: Bart Oldeman
Acked-by: Ingo Molnar
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
mxcsr_feature_mask_init isn't needed in suspend/resume time (we can use
boot time mask). And actually it's harmful, as it clear task's saved
fxsave in resume. This bug is widely seen by users using zsh.(akpm: my eyes. Fixed some surrounding whitespace mess)
Signed-off-by: Shaohua Li
Cc: Pavel Machek
Cc: Andi Kleen
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This adjusts i386's cmpxchg patterns so that
- for word and long cmpxchg-es the compiler can utilize all possible
registers- cmpxchg8b gets disabled when the minimum specified hardware architectur
doesn't support it (like was already happening for the byte, word, and
long ones).Signed-off-by: Jan Beulich
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
