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  1. 18 1月, 2011 2 次提交
    • B
      x86: Clear irqstack thread_info · 7b698ea3
      由 Brian Gerst 提交于 
      Mathias Merz reported that v2.6.37 failed to boot on his
system.

Make sure that the thread_info part of the irqstack is
initialized to zeroes.
Reported-and-Tested-by: NMatthias Merz <linux@merz-ka.de>
Signed-off-by: NBrian Gerst <brgerst@gmail.com>
Acked-by: NPekka Enberg <penberg@kernel.org>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
LKML-Reference: <AANLkTimyKXfJ1x8tgwrr1hYnNLrPfgE1NTe4z7L6tUDm@mail.gmail.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>
      7b698ea3
    • S
      x86: Make relocatable kernel work with new binutils · 86b1e8dd
      由 Shaohua Li 提交于 
      The CONFIG_RELOCATABLE=y option is broken with new binutils, which will make
boot panic.

According to Lu Hongjiu, the affected binutils are from 2.20.51.0.12 to
2.21.51.0.3, which are release since Oct 22 this year. At least ubuntu 10.10 is
using such binutils. See:

    http://sourceware.org/bugzilla/show_bug.cgi?id=12327

The reason of the boot panic is that we have 'jiffies = jiffies_64;' in
vmlinux.lds.S. The jiffies isn't in any section. In kernel build, there is
warning saying jiffies is an absolute address and can't be relocatable. At
runtime, jiffies will have virtual address 0.

Signed-off-by: Shaohua Li<shaohua.li@intel.com>
Cc: Lu Hongjiu<hongjiu.lu@intel.com>
Cc: Huang Ying <ying.huang@intel.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
LKML-Reference: <1295312269.1949.725.camel@sli10-conroe>
Signed-off-by: NIngo Molnar <mingo@elte.hu>
      86b1e8dd
  3. 15 1月, 2011 3 次提交
    • H
      x86, olpc: Add missing Kconfig dependencies · 76d1f7bf
      由 H. Peter Anvin 提交于 
      OLPC uses select for OLPC_OPENFIRMWARE, which means OLPC has to
enforce the dependencies for OLPC_OPENFIRMWARE.  Make sure it does so.
Signed-off-by: NH. Peter Anvin <hpa@linux.intel.com>
Cc: Daniel Drake <dsd@laptop.org>
Cc: Andres Salomon <dilinger@queued.net>
Cc: Grant Likely <grant.likely@secretlab.ca>
LKML-Reference: <20100923162846.D8D409D401B@zog.reactivated.net>
Cc: <stable@kernel.org> 2.6.37
      76d1f7bf
    • J
      x86, mrst: Set correct APB timer IRQ affinity for secondary cpu · 6550904d
      由 Jacob Pan 提交于 
      Offlining the secondary CPU causes the timer irq affinity to be set to
CPU 0. When the secondary CPU is back online again, the wrong irq
affinity will be used.

This patch ensures secondary per CPU timer always has the correct
IRQ affinity when enabled.
Signed-off-by: NJacob Pan <jacob.jun.pan@linux.intel.com>
LKML-Reference: <1294963604-18111-1-git-send-email-jacob.jun.pan@linux.intel.com>
Signed-off-by: NH. Peter Anvin <hpa@linux.intel.com>
Cc: <stable@kernel.org> 2.6.37
      6550904d
    • J
      x86: tsc: Fix calibration refinement conditionals to avoid divide by zero · 62627bec
      由 John Stultz 提交于 
      Konrad Wilk reported that the new delayed calibration crashes with a
divide by zero on Xen. The reason is that Xen sets the pmtimer
address, but reading from it returns 0xffffff. That results in the
ref_start and ref_stop value being the same, so the delta is zero
which causes the divide by zero later in the calculation.

The conditional (!hpet && !ref_start && !ref_stop) which sanity checks
the calibration reference values doesn't really make sense. If the
refs are null, but hpet is on, we still want to break out.

The div by zero would be possible to trigger by chance if both reads
from the hardware provided the exact same value (due to hardware
wrapping).

So checking if both the ref values are the same should handle if we
don't have hardware (both null) or if they are the same value (either by
invalid hardware, or by chance), avoiding the div by zero issue.

[ tglx: Applied the same fix to native_calibrate_tsc() where this
  	check was copied from ]
Reported-by: NKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Tested-by: NKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: NJohn Stultz <johnstul@us.ibm.com>
LKML-Reference: <1295024788-15619-1-git-send-email-johnstul@us.ibm.com>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
      62627bec
  5. 12 1月, 2011 1 次提交
  7. 11 1月, 2011 5 次提交
  9. 10 1月, 2011 3 次提交
  11. 09 1月, 2011 1 次提交
  13. 07 1月, 2011 23 次提交
  15. 06 1月, 2011 2 次提交
    • J
      tools, perf: Documentation for the power events API · 4b95f135
      由 Jean Pihet 提交于 
      Provides documentation for the following:
- the new power trace API,
- the old (legacy) power trace API,
- the DEPRECATED Kconfig option usage.
Signed-off-by: NJean Pihet <j-pihet@ti.com>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: trenn@suse.de
Cc: Len Brown <len.brown@intel.com>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: linux-pm@lists.linux-foundation.org
LKML-Reference: <1294253342-29056-3-git-send-email-j-pihet@ti.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>
      4b95f135
    • J
      perf: Add calls to suspend trace point · 938cfed1
      由 Jean Pihet 提交于 
      Uses the machine_suspend trace point, called from the
generic kernel suspend_devices_and_enter function.
Signed-off-by: NJean Pihet <j-pihet@ti.com>
Acked-by: NRafael J. Wysocki <rjw@sisk.pl>
Cc: Arjan van de Ven <arjan@linux.intel.com>
CC: Thomas Renninger <trenn@suse.de>
Cc: Len Brown <len.brown@intel.com>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: linux-pm@lists.linux-foundation.org
LKML-Reference: <1294253342-29056-2-git-send-email-j-pihet@ti.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>
      938cfed1