15 Aug, 2009
1 commit
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The persistent clock of some architectures (e.g. s390) have a
better granularity than seconds. To reduce the delta between the
host clock and the guest clock in a virtualized system change the
read_persistent_clock function to return a struct timespec.Signed-off-by: Martin Schwidefsky
Cc: Ingo Molnar
Acked-by: John Stultz
Cc: Daniel Walker
LKML-Reference:
Signed-off-by: Thomas Gleixner
11 Aug, 2009
1 commit
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…x/kernel/git/tip/linux-2.6-tip
* 'perfcounters-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (27 commits)
perf_counter: Zero dead bytes from ftrace raw samples size alignment
perf_counter: Subtract the buffer size field from the event record size
perf_counter: Require CAP_SYS_ADMIN for raw tracepoint data
perf_counter: Correct PERF_SAMPLE_RAW output
perf tools: callchain: Fix bad rounding of minimum rate
perf_counter tools: Fix libbfd detection for systems with libz dependency
perf: "Longum est iter per praecepta, breve et efficax per exempla"
perf_counter: Fix a race on perf_counter_ctx
perf_counter: Fix tracepoint sampling to be part of generic sampling
perf_counter: Work around gcc warning by initializing tracepoint record unconditionally
perf tools: callchain: Fix sum of percentages to be 100% by displaying amount of ignored chains in fractal mode
perf tools: callchain: Fix 'perf report' display to be callchain by default
perf tools: callchain: Fix spurious 'perf report' warnings: ignore empty callchains
perf record: Fix the -A UI for empty or non-existent perf.data
perf util: Fix do_read() to fail on EOF instead of busy-looping
perf list: Fix the output to not include tracepoints without an id
perf_counter/powerpc: Fix oops on cpus without perf_counter hardware support
perf stat: Fix tool option consistency: rename -S/--scale to -c/--scale
perf report: Add debug help for the finding of symbol bugs - show the symtab origin (DSO, build-id, kernel, etc)
perf report: Fix per task mult-counter stat reporting
...
10 Aug, 2009
2 commits
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On an iMac G5, the b43 driver is failing to initialise because trying to
set the dma mask to 30-bit fails. Even though there's only 512MiB of RAM
in the machine anyway:
https://bugzilla.redhat.com/show_bug.cgi?id=514787We should probably let it succeed if the available RAM in the system
doesn't exceed the requested limit.Signed-off-by: David Woodhouse
Signed-off-by: Benjamin Herrenschmidt -
* 'kvm-updates/2.6.31' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: Avoid redelivery of edge interrupt before next edge
KVM: MMU: limit rmap chain length
KVM: ia64: fix build failures due to ia64/unsigned long mismatches
KVM: Make KVM_HPAGES_PER_HPAGE unsigned long to avoid build error on powerpc
KVM: fix ack not being delivered when msi present
KVM: s390: fix wait_queue handling
KVM: VMX: Fix locking imbalance on emulation failure
KVM: VMX: Fix locking order in handle_invalid_guest_state
KVM: MMU: handle n_free_mmu_pages > n_alloc_mmu_pages in kvm_mmu_change_mmu_pages
KVM: SVM: force new asid on vcpu migration
KVM: x86: verify MTRR/PAT validity
KVM: PIT: fix kpit_elapsed division by zero
KVM: Fix KVM_GET_MSR_INDEX_LIST
09 Aug, 2009
1 commit
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If we have the powerpc perf_counter backend compiled in, but
the cpu we are running on is one where we don't support the
PMU, we currently oops in hw_perf_group_sched_in if we try to
use any counters, because ppmu is NULL in that case, and we
unconditionally dereference ppmu.This fixes the problem by adding a check if ppmu is NULL at the
beginning of hw_perf_group_sched_in, and also at the beginning
of the other functions that get called from the perf_counter
core, i.e. hw_perf_disable, hw_perf_enable, and
hw_perf_counter_setup.Signed-off-by: Paul Mackerras
Cc: Peter Zijlstra
Cc: benh@kernel.crashing.org
Signed-off-by: Ingo Molnar
06 Aug, 2009
1 commit
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If the current CPU doesn't support performance counters,
cur_cpu_spec->oprofile_cpu_type can be NULL. The current
perf_counter modules don't test for that case and would thus
crash at boot time.Bug reported by David Woodhouse.
Reported-by: David Woodhouse
Signed-off-by: Benjamin Herrenschmidt
Cc: Peter Zijlstra
Signed-off-by: Paul Mackerras
LKML-Reference:
Signed-off-by: Ingo Molnar
05 Aug, 2009
1 commit
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Eliminates this compiler warning:
arch/powerpc/kvm/../../../virt/kvm/kvm_main.c:1178: error: integer overflow in expression
Signed-off-by: Stephen Rothwell
Signed-off-by: Avi Kivity
30 Jul, 2009
7 commits
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Signed-off-by: Kumar Gala
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General update of defconfig including the following notable changes:
- Enable Highmem support.
- Support for PCMCIA based daughter card.Signed-off-by: Martyn Welch
Signed-off-by: Kumar Gala -
General update of defconfig including the following notable changes:
- Enable GPIO access via sysfs on GE Fanuc's PPC9A.
- Enable Highmem support.
- Support for PCMCIA based daughter card.Signed-off-by: Martyn Welch
Signed-off-by: Kumar Gala -
U-Boot maps PCI IO at 0xe0300000, while current dts files specify
0xe2000000. This leads to the following oops with CONFIG_8139TOO_PIO=y.8139too Fast Ethernet driver 0.9.28
Machine check in kernel mode.
Caused by (from SRR1=41000): Transfer error ack signal
Oops: Machine check, sig: 7 [#1]
MPC837x RDB
[...]
NIP [00000900] 0x900
LR [c0439df8] rtl8139_init_board+0x238/0x524
Call Trace:
[cf831d90] [c0439dcc] rtl8139_init_board+0x20c/0x524 (unreliable)
[cf831de0] [c043a15c] rtl8139_init_one+0x78/0x65c
[cf831e40] [c0235250] pci_call_probe+0x20/0x30
[...]This patch fixes the issue by specifying the correct PCI IO base
address.Signed-off-by: Anton Vorontsov
Signed-off-by: Kumar Gala -
Sometimes (e.g. when there are no UEMs attached to a board)
fsl_pq_mdio_find_free() fails to find a spare address for a TBI PHY,
this is because get_phy_id() returns bogus 0x0000ffff values
(0xffffffff is expected), and therefore mdio bus probing fails with
the following message:fsl-pq_mdio: probe of e0082120.mdio failed with error -16
And obviously ethernet doesn't work after this.
This patch solves the problem by adding tbi-phy node into mdio node,
so that we won't scan for spare addresses, we'll just use a fixed one.Signed-off-by: Anton Vorontsov
Signed-off-by: Kumar Gala -
Linux isn't able to detect link changes on ethernet ports that were
used by U-Boot. This is because U-Boot wrongly clears interrupt
polarity bit (INTPOL, 0x400) in the extended status register (EXT_SR,
0x1b) of Marvell PHYs.There is no easy way for PHY drivers to know IRQ line polarity (we
could extract it from the device tree and pass it to phydevs, but
that'll be quite a lot of work), so for now just reset the PHYs to
their default states.Signed-off-by: Anton Vorontsov
Signed-off-by: Kumar Gala -
In switch_mmu_context() if we call steal_context_smp() to get a context
to use we shouldn't fall through and than call steal_context_up(). Doing
so can be problematic in that the 'mm' that steal_context_up() ends up
using will not get marked dirty in the stale_map[] for other CPUs that
might have used that mm. Thus we could end up with stale TLB entries in
the other CPUs that can cause all kinda of havoc.Signed-off-by: Kumar Gala
28 Jul, 2009
1 commit
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mm: Pass virtual address to [__]p{te,ud,md}_free_tlb()
Upcoming paches to support the new 64-bit "BookE" powerpc architecture
will need to have the virtual address corresponding to PTE page when
freeing it, due to the way the HW table walker works.Basically, the TLB can be loaded with "large" pages that cover the whole
virtual space (well, sort-of, half of it actually) represented by a PTE
page, and which contain an "indirect" bit indicating that this TLB entry
RPN points to an array of PTEs from which the TLB can then create direct
entries. Thus, in order to invalidate those when PTE pages are deleted,
we need the virtual address to pass to tlbilx or tlbivax instructions.The old trick of sticking it somewhere in the PTE page struct page sucks
too much, the address is almost readily available in all call sites and
almost everybody implemets these as macros, so we may as well add the
argument everywhere. I added it to the pmd and pud variants for consistency.Signed-off-by: Benjamin Herrenschmidt
Acked-by: David Howells [MN10300 & FRV]
Acked-by: Nick Piggin
Acked-by: Martin Schwidefsky [s390]
Signed-off-by: Linus Torvalds
15 Jul, 2009
2 commits
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When moving load_up_altivec to vector.S a typo in a comment caused a
thinko setting the wrong variable.Signed-off-by: Andreas Schwab
Signed-off-by: Benjamin Herrenschmidt -
On booke processors, gdb is seeing spurious SIGTRAPs when setting a
watchpoint.user_disable_single_step() simply quits when the DAC is non-zero. It should
be clearing the DBCR0_IC and DBCR0_BT bits from the dbcr0 register and
TIF_SINGLESTEP from the thread flag.Signed-off-by: Dave Kleikamp
Signed-off-by: Benjamin Herrenschmidt
13 Jul, 2009
1 commit
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* Remove smp_lock.h from files which don't need it (including some headers!)
* Add smp_lock.h to files which do need it
* Make smp_lock.h include conditional in hardirq.h
It's needed only for one kernel_locked() usage which is under CONFIG_PREEMPTThis will make hardirq.h inclusion cheaper for every PREEMPT=n config
(which includes allmodconfig/allyesconfig, BTW)Signed-off-by: Alexey Dobriyan
Signed-off-by: Linus Torvalds
11 Jul, 2009
2 commits
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…x/kernel/git/tip/linux-2.6-tip
* 'perfcounters-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (50 commits)
perf report: Add "Fractal" mode output - support callchains with relative overhead rate
perf_counter tools: callchains: Manage the cumul hits on the fly
perf report: Change default callchain parameters
perf report: Use a modifiable string for default callchain options
perf report: Warn on callchain output request from non-callchain file
x86: atomic64: Inline atomic64_read() again
x86: atomic64: Clean up atomic64_sub_and_test() and atomic64_add_negative()
x86: atomic64: Improve atomic64_xchg()
x86: atomic64: Export APIs to modules
x86: atomic64: Improve atomic64_read()
x86: atomic64: Code atomic(64)_read and atomic(64)_set in C not CPP
x86: atomic64: Fix unclean type use in atomic64_xchg()
x86: atomic64: Make atomic_read() type-safe
x86: atomic64: Reduce size of functions
x86: atomic64: Improve atomic64_add_return()
x86: atomic64: Improve cmpxchg8b()
x86: atomic64: Improve atomic64_read()
x86: atomic64: Move the 32-bit atomic64_t implementation to a .c file
x86: atomic64: The atomic64_t data type should be 8 bytes aligned on 32-bit too
perf report: Annotate variable initialization
... -
Pull the initial preempt_count value into a single
definition site.Maintainers for: alpha, ia64 and m68k, please have a look,
your arch code is funny.The header magic is a bit odd, but similar to the KERNEL_DS
one, CPP waits with expanding these macros until the
INIT_THREAD_INFO macro itself is expanded, which is in
arch/*/kernel/init_task.c where we've already included
sched.h so we're good.Cc: tony.luck@intel.com
Cc: rth@twiddle.net
Cc: geert@linux-m68k.org
Signed-off-by: Peter Zijlstra
Acked-by: Matt Mackall
Signed-off-by: Linus Torvalds
08 Jul, 2009
12 commits
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This patch fixes various badnesses like this for all interrupt
controllers:------------[ cut here ]------------
Badness at c04db9dc [verbose debug info unavailable]
NIP: c04db9dc LR: c04db9ac CTR: 00000000
REGS: c053de30 TRAP: 0700 Not tainted (2.6.31-rc1-00432-ge69b2b5-dirty)
MSR: 00021000 CR: 22020084 XER: 00000000
TASK = c0500480[0] 'swapper' THREAD: c053c000
GPR00: 00000001 c053dee0 c0500480 00000000 00000050 00000020 3fffffff 00000000
GPR08: 00000001 c0540000 e0080080 00000000 22000084 64183600 3ff8f800 00000000
GPR16: 841b0240 449a0303 00000000 00000000 00000000 00000000 00000000 c04f5bf4
GPR24: 00000000 00000000 00000000 00000050 00000020 00000000 3fffffff 00000050
NIP [c04db9dc] alloc_arch_preferred_bootmem+0x48/0x74
LR [c04db9ac] alloc_arch_preferred_bootmem+0x18/0x74
Call Trace:
[c053dee0] [c000a5a4] __of_address_to_resource+0x44/0xd0 (unreliable)
[c053def0] [c04dba58] ___alloc_bootmem_nopanic+0x50/0x108
[c053df20] [c04dbb28] ___alloc_bootmem+0x18/0x50
[c053df30] [c04d5de0] qe_ic_init+0x5c/0x1b0
[c053df70] [c04d77b0] mpc85xx_mds_pic_init+0xb8/0x10c
[c053dfb0] [c04cf374] init_IRQ+0x28/0x3cp.s. commit 85355bb272db31a3f2dd99d547eef794805e1319 ("powerpc: Fix
mpic alloc warning") missed some alloc_bootmem() instances, this is
now fixed.Signed-off-by: Anton Vorontsov
Acked-by: Timur Tabi
Signed-off-by: Benjamin Herrenschmidt -
Current implementation of spin_event_timeout can be interrupted by an
IRQ or context switch after testing the condition, but before checking
the timeout. This can cause the loop to report a timeout when the
condition actually became true in the middle.This patch adds one final check of the condition upon exit of the loop
if the last test of the condition was still false.Signed-off-by: Grant Likely
Acked-by: Timur Tabi
Signed-off-by: Benjamin Herrenschmidt -
pr_debug() can now result in code being generated even when DEBUG
is not defined. That's not really desirable in some places.With CONFIG_DYNAMIC_DEBUG=y:
size before:
text data bss dec hex filename
2036 368 8 2412 96c arch/powerpc/mm/pgtable.osize after:
text data bss dec hex filename
1677 248 8 1933 78d arch/powerpc/mm/pgtable.oSigned-off-by: Michael Ellerman
Signed-off-by: Benjamin Herrenschmidt -
pr_debug() can now result in code being generated even when DEBUG
is not defined. That's not really desirable in some places.With CONFIG_DYNAMIC_DEBUG=y:
size before:
text data bss dec hex filename
7083 1616 0 8699 21fb arch/powerpc/../axon_msi.osize after:
text data bss dec hex filename
5772 1208 0 6980 1b44 arch/powerpc/../axon_msi.oSigned-off-by: Michael Ellerman
Signed-off-by: Benjamin Herrenschmidt -
pr_debug() can now result in code being generated even when DEBUG
is not defined. That's not really desirable in some places.With CONFIG_DYNAMIC_DEBUG=y:
size before:
text data bss dec hex filename
3252 384 0 3636 e34 arch/powerpc/mm/gup.osize after:
text data bss dec hex filename
2576 96 0 2672 a70 arch/powerpc/mm/gup.oSigned-off-by: Michael Ellerman
Signed-off-by: Benjamin Herrenschmidt -
pr_debug() can now result in code being generated even when DEBUG
is not defined. That's not really desirable in some places.With CONFIG_DYNAMIC_DEBUG=y:
size before:
text data bss dec hex filename
3261 416 4 3681 e61 arch/powerpc/mm/slb.osize after:
text data bss dec hex filename
2861 248 4 3113 c29 arch/powerpc/mm/slb.oSigned-off-by: Michael Ellerman
Signed-off-by: Benjamin Herrenschmidt -
Remove duplicated #include('s) in
arch/powerpc/kernel/mpc7450-pmu.c
arch/powerpc/kernel/ppc970-pmu.cSigned-off-by: Huang Weiyi
Signed-off-by: Benjamin Herrenschmidt -
pr_debug() can now result in code being generated even when DEBUG
is not defined. That's not really desirable in some places.With CONFIG_DYNAMIC_DEBUG=y:
size before:
text data bss dec hex filename
1508 48 28 1584 630 powerpc/mm/mmu_context_nohash.osize after:
text data bss dec hex filename
1088 0 28 1116 45c powerpc/mm/mmu_context_nohash.oSigned-off-by: Michael Ellerman
Signed-off-by: Benjamin Herrenschmidt -
pr_debug() can now result in code being generated even when DEBUG
is not defined. That's not really desirable in some places.With CONFIG_DYNAMIC_DEBUG=y:
size before:
text data bss dec hex filename
7720 5488 296 13504 34c0 platforms/pseries/xics.osize after:
text data bss dec hex filename
7535 5456 296 13287 33e7 platforms/pseries/xics.oSigned-off-by: Michael Ellerman
Signed-off-by: Benjamin Herrenschmidt -
Signed-off-by: Joe Perches
Acked-by: Geoff Levand
Signed-off-by: Benjamin Herrenschmidt -
pr_debug() can now result in code being generated even when DEBUG
is not defined. That's not really desirable in some places.In particular, pSeries_lpar_hpte_insert() goes from 185 instructions
to 77 instructions as a result of this patch. Luckily that code
isn't called very often ...With CONFIG_DYNAMIC_DEBUG=y:
size before:
text data bss dec hex filename
7284 1552 296 9132 23ac platforms/pseries/lpar.osize after:
text data bss dec hex filename
5806 1096 296 7198 1c1e platforms/pseries/lpar.oSigned-off-by: Michael Ellerman
Signed-off-by: Benjamin Herrenschmidt
06 Jul, 2009
2 commits
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The GPIO LEDS driver now has a default state of "keep". Update the Warp DTS
and platform file to take advantage of this new state. This removes the
hardcoding of the two LEDs on the Warp.Signed-off-by: Sean MacLennan
Signed-off-by: Josh Boyer -
* Enable GPIO LEDS and LED triggers
* Move to SLUB
* Enable HOTPLUG
* Enable timestamps on printks
* Enable UBIFS
* Enable in-kernel configSigned-off-by: Sean MacLennan
Signed-off-by: Josh Boyer
05 Jul, 2009
1 commit
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With -Werror enabled during the build, the warp.c file fails to build
due to the temp_isr function not containing a return statement. This
fixes the build error and documents that the function never returns.Signed-off-by: Josh Boyer
01 Jul, 2009
2 commits
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POWER7 has the same PR/HV bit layout as POWER6, so set the flag.
Signed-off-by: Anton Blanchard
Acked-by: Paul Mackerras
Cc: a.p.zijlstra@chello.nl
Cc: benh@kernel.crashing.org
LKML-Reference:
Signed-off-by: Ingo Molnar -
…x/kernel/git/tip/linux-2.6-tip
* 'perfcounters-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (47 commits)
perf report: Add --symbols parameter
perf report: Add --comms parameter
perf report: Add --dsos parameter
perf_counter tools: Adjust only prelinked symbol's addresses
perf_counter: Provide a way to enable counters on exec
perf_counter tools: Reduce perf stat measurement overhead/skew
perf stat: Use percentages for scaling output
perf_counter, x86: Update x86_pmu after WARN()
perf stat: Micro-optimize the code: memcpy is only required if no event is selected and !null_run
perf stat: Improve output
perf stat: Fix multi-run stats
perf stat: Add -n/--null option to run without counters
perf_counter tools: Remove dead code
perf_counter: Complete counter swap
perf report: Print sorted callchains per histogram entries
perf_counter tools: Prepare a small callchain framework
perf record: Fix unhandled io return value
perf_counter tools: Add alias for 'l1d' and 'l1i'
perf-report: Add bare minimum PERF_EVENT_READ parsing
perf-report: Add modes for inherited stats and no-samples
...
26 Jun, 2009
3 commits
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When using 64k page sizes, our PTE pages are split in two halves,
the second half containing the "extension" used to keep track of
individual 4k pages when not using HW 64k pages.However, our page tables used for hugetlb have a slightly different
format and don't carry that "second half".Our code that batched PTEs to be invalidated unconditionally reads
the "second half" (to put it into the batch), which means that when
called to invalidate hugetlb PTEs, it will access unrelated memory.It breaks when CONFIG_DEBUG_PAGEALLOC is enabled.
This fixes it by only accessing the second half when the _PAGE_COMBO
bit is set in the first half, which indicates that we are dealing with
a "combo" page which represents 16x4k subpages. Anything else shouldn't
have this bit set and thus not require loading from the second half.Signed-off-by: Benjamin Herrenschmidt
-
The function udbg_44x_as1_flush() has the wrong prototype causing
a warning when enabling 440 early debug.Signed-off-by: Benjamin Herrenschmidt