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  1. 02 9月, 2008 2 次提交
  3. 01 9月, 2008 2 次提交
  5. 29 8月, 2008 1 次提交
    • C
      ALSA: oxygen: fix distorted output on AK4396-based cards · df91bc23
      由 Clemens Ladisch 提交于 
      When changing the sample rate, the CMI8788's master clock output becomes
unstable for a short time.  The AK4396 needs the master clock to do SPI
writes, so writing to an AK4396 control register directly after a sample
rate change will garble the value.  In our case, this leads to the DACs
being misconfigured to I2S sample format, which results in a wrong
output level and horrible distortions on samples louder than -6 dB.

To fix this, we need to wait until the new master clock signal has
become stable before doing SPI writes.
Signed-off-by: NClemens Ladisch <clemens@ladisch.de>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
      df91bc23
  7. 27 8月, 2008 1 次提交
  9. 26 8月, 2008 25 次提交
  11. 25 8月, 2008 9 次提交
    • P
      sched_clock: fix cpu_clock() · 354879bb
      由 Peter Zijlstra 提交于 
      This patch fixes 3 issues:

a) it removes the dependency on jiffies, because jiffies are incremented
   by a single CPU, and the tick is not synchronized between CPUs. Therefore
   relying on it to calculate a window to clip whacky TSC values doesn't work
   as it can drift around.

   So instead use [GTOD, GTOD+TICK_NSEC) as the window.

b) __update_sched_clock() did (roughly speaking):

   delta = sched_clock() - scd->tick_raw;
   clock += delta;

   Which gives exponential growth, instead of linear.

c) allows the sched_clock_cpu() value to warp the u64 without breaking.

the results are more reliable sched_clock() deltas:

           before       after   sched_clock

cpu_clock: 15750        51312   51488
cpu_clock: 59719        51052   50947
cpu_clock: 15879        51249   51061
cpu_clock: 1            50933   51198
cpu_clock: 1            50931   51039
cpu_clock: 1            51093   50981
cpu_clock: 1            51043   51040
cpu_clock: 1            50959   50938
cpu_clock: 1            50981   51011
cpu_clock: 1            51364   51212
cpu_clock: 1            51219   51273
cpu_clock: 1            51389   51048
cpu_clock: 1            51285   51611
cpu_clock: 1            50964   51137
cpu_clock: 1            50973   50968
cpu_clock: 1            50967   50972
cpu_clock: 1            58910   58485
cpu_clock: 1            51082   51025
cpu_clock: 1            50957   50958
cpu_clock: 1            50958   50957
cpu_clock: 1006128      51128   50971
cpu_clock: 1            51107   51155
cpu_clock: 1            51371   51081
cpu_clock: 1            51104   51365
cpu_clock: 1            51363   51309
cpu_clock: 1            51107   51160
cpu_clock: 1            51139   51100
cpu_clock: 1            51216   51136
cpu_clock: 1            51207   51215
cpu_clock: 1            51087   51263
cpu_clock: 1            51249   51177
cpu_clock: 1            51519   51412
cpu_clock: 1            51416   51255
cpu_clock: 1            51591   51594
cpu_clock: 1            50966   51374
cpu_clock: 1            50966   50966
cpu_clock: 1            51291   50948
cpu_clock: 1            50973   50867
cpu_clock: 1            50970   50970
cpu_clock: 998306       50970   50971
cpu_clock: 1            50971   50970
cpu_clock: 1            50970   50970
cpu_clock: 1            50971   50971
cpu_clock: 1            50970   50970
cpu_clock: 1            51351   50970
cpu_clock: 1            50970   51352
cpu_clock: 1            50971   50970
cpu_clock: 1            50970   50970
cpu_clock: 1            51321   50971
cpu_clock: 1            50974   51324
Signed-off-by: NPeter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: NIngo Molnar <mingo@elte.hu>
      354879bb
    • A
      x86: add X86_FEATURE_XMM4_2 definitions · 2a61812a
      由 Austin Zhang 提交于 
      Added Intel processor SSE4.2 feature flag.

No in-tree user at the moment, but makes the tree-merging life easier
for the crypto tree.
Signed-off-by: NAustin Zhang <austin.zhang@intel.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>
      2a61812a
    • A
      KVM: fix userspace ABI breakage · 1327138e
      由 Adrian Bunk 提交于 
      The following part of commit 9ef621d3
(KVM: Support mixed endian machines) changed on the size of a struct
that is exported to userspace:

include/linux/kvm.h:

@@ -318,14 +318,14 @@ struct kvm_trace_rec {
 	__u32 vcpu_id;
 	union {
 		struct {
-			__u32 cycle_lo, cycle_hi;
+			__u64 cycle_u64;
 			__u32 extra_u32[KVM_TRC_EXTRA_MAX];
 		} cycle;
 		struct {
 			__u32 extra_u32[KVM_TRC_EXTRA_MAX];
 		} nocycle;
 	} u;
-};
+} __attribute__((packed));

Packing a struct was the correct idea, but it packed the wrong struct.
Signed-off-by: NAdrian Bunk <bunk@kernel.org>
Signed-off-by: NAvi Kivity <avi@qumranet.com>
      1327138e
    • A
      KVM: MMU: Fix torn shadow pte · cd5998eb
      由 Avi Kivity 提交于 
      The shadow code assigns a pte directly in one place, which is nonatomic on
i386 can can cause random memory references.  Fix by using an atomic setter.
Signed-off-by: NAvi Kivity <avi@qumranet.com>
      cd5998eb
    • E
      KVM: Use .fixup instead of .text.fixup on __kvm_handle_fault_on_reboot · 18b13e54
      由 Eduardo Habkost 提交于 
      vmlinux.lds expects the fixup code to be on a section named .fixup. The
.text.fixup section is not mentioned on vmlinux.lds, and is included on
the resulting vmlinux (just after .text) only because of ld heuristics on
placing orphan sections.

However, placing .text.fixup outside .text breaks the definition of
_etext, making it exclude the .text.fixup contents. That makes .text.fixup
be ignored by the kernel initialization code that needs to know about
section locations, such as the code setting page protection bits.
Signed-off-by: NEduardo Habkost <ehabkost@redhat.com>
Signed-off-by: NAvi Kivity <avi@qumranet.com>
      18b13e54
    • R
      lguest: update commentry · 1dc3e3bc
      由 Rusty Russell 提交于 
      Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>
      1dc3e3bc
    • R
      stop_machine: Remove deprecated stop_machine_run · bf200296
      由 Rusty Russell 提交于 
      Everyone should be using stop_machine() now.  The staged API
transition helped life in linux-next.
Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>
      bf200296
    • R
      stop_machine: wean Xen off stop_machine_run · 37a7c0f3
      由 Rusty Russell 提交于 
      This is the last use of (the deprecated) stop_machine_run in the tree.
Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>
Acked-by: NJeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
      37a7c0f3
    • A
      virtio_balloon: fix towards_target when deflating balloon · 532a6086
      由 Anthony Liguori 提交于 
      Both v and vb->num_pages are u32 and unsigned int respectively.  If v is less
than vb->num_pages (and it is, when deflating the balloon), the result is a
very large 32-bit number.  Since we're returning a s64, instead of getting the
same negative number we desire, we get a very large positive number.

This handles the case where v < vb->num_pages and ensures we get a small,
negative, s64 as the result.

Rusty: please push this for 2.6.27-rc4.  It's probably appropriate for the
stable tree too as it will cause an unexpected OOM when ballooning.
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> (simplified)
      532a6086