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  1. 25 4月, 2008 11 次提交
  3. 23 4月, 2008 1 次提交
  5. 22 4月, 2008 7 次提交
    • J
      [IA64] minor irq handler cleanups · 9010eff0
      由 Jeff Garzik 提交于 
      - remove unused 'irq' argument from pfm_do_interrupt_handler()

- remove pointless cast to void*

- add KERN_xxx prefix to printk()

- remove braces around singleton C statement

- in tioce_provider.c, start tioce_dma_consistent() and
  tioce_error_intr_handler() function declarations in column 0

This change's main purpose is to prepare for the patchset in
jgarzik/misc-2.6.git#irq-remove, that explores removal of the
never-used 'irq' argument in each interrupt handler.
Signed-off-by: NJeff Garzik <jgarzik@redhat.com>
Signed-off-by: NTony Luck <tony.luck@intel.com>
      9010eff0
    • H
      [IA64] simplify notify hooks in mca.c · 4fa2f0e6
      由 Hidetoshi Seto 提交于 
      There are many notify_die() and almost all take same style with
ia64_mca_spin().  This patch defines macros and replace them all,
to reduce lines and to improve readability.
Signed-off-by: NHidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Signed-off-by: NTony Luck <tony.luck@intel.com>
      4fa2f0e6
    • H
      [IA64] do notify DIE_MCA_MONARCH_PROCESS for each monarchs · 284e5427
      由 Hidetoshi Seto 提交于 
      There are 3 hooks in MCA handler, but this DIE_MCA_MONARCH_PROCESS
event does not notified other than for the first monarch.
Signed-off-by: NHidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Signed-off-by: NTony Luck <tony.luck@intel.com>
      284e5427
    • H
      [IA64] disable interrupts on exit of ia64_trace_syscall · 38477ad7
      由 Hidetoshi Seto 提交于 
      While testing with CONFIG_VIRT_CPU_ACCOUNTING=y, I found that
I occasionally get very huge system time in some threads.

So I dug the issue and finally noticed that it was caused
because of an interrupt which interrupt in the following window:

> [arch/ia64/kernel/entry.S: (!CONFIG_PREEMPT && CONFIG_VIRT_CPU_ACCOUNTING)]
>
> ENTRY(ia64_leave_syscall)
>    :
> (pUStk) rsm psr.i
>         cmp.eq pLvSys,p0=r0,r0          // pLvSys=1: leave from syscall
> (pUStk) cmp.eq.unc p6,p0=r0,r0          // p6 <- pUStk
> .work_processed_syscall:
>         adds r2=PT(LOADRS)+16,r12
> (pUStk) mov.m r22=ar.itc                        // fetch time at leave
>         adds r18=TI_FLAGS+IA64_TASK_SIZE,r13
>         ;;
> <<< window: from here >>>
> (p6)    ld4 r31=[r18]  // load current_thread_info()->flags
>         ld8 r19=[r2],PT(B6)-PT(LOADRS)
>         adds r3=PT(AR_BSPSTORE)+16,r12
>         ;;
>         mov r16=ar.bsp
>         ld8 r18=[r2],PT(R9)-PT(B6)
> (p6)    and r15=TIF_WORK_MASK,r31  // any work other than TIF_SYSCALL_TRACE?
>         ;;
>         ld8 r23=[r3],PT(R11)-PT(AR_BSPSTORE)
> (p6)    cmp4.ne.unc p6,p0=r15, r0               // any special work pending?
> (p6)    br.cond.spnt .work_pending_syscall
>         ;;
>         ld8 r9=[r2],PT(CR_IPSR)-PT(R9)
>         ld8 r11=[r3],PT(CR_IIP)-PT(R11)
> (pNonSys) break 0 // bug check: we shouldn't be here if pNonSys is TRUE!
>         ;;
>         invala
> <<< window: to here >>>
>         rsm psr.i | psr.ic // turn off interrupts and interruption collection

If pUStk is true, it means we are going to return user mode, hence we fetch
ar.itc to get time at leave from system.
It seems that it is not possible to interrupt the window if pUStk is true,
because interrupts are disabled early.  And also disabling interrupt makes
sense because it is safe for referring current_thread_info()->flags.

However interrupting the window while pUStk is true was possible.
The route was:
ia64_trace_syscall
-> .work_pending_syscall_end
-> .work_processed_syscall
Only in case entering the window from this route, interrupts are enabled
during in the window even if pUStk is true.  I suppose interrupts must be
disabled here anyway if pUStk is true.
I'm not sure but afraid that what kind of bad effect were there, other
than crazy system time which I found.

FYI, there was a commit 6f6d7582 that
points out a bug at same point(exit of ia64_trace_syscall) in 2006.
It can be said that there was an another bug.
Signed-off-by: NHidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Signed-off-by: NTony Luck <tony.luck@intel.com>
      38477ad7
    • A
      frv: unexport kmap_atomic_to_page · 9fd91217
      由 Adrian Bunk 提交于 
      This patch removes the no longer used export of kmap_atomic_to_page.
Signed-off-by: NAdrian Bunk <bunk@kernel.org>
Signed-off-by: NDavid Howells <dhowells@redhat.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      9fd91217
    • T
      arm: Storage class should be before const qualifier · b1d18dc0
      由 Tobias Klauser 提交于 
      The C99 specification states in section 6.11.5:

The placement of a storage-class specifier other than at the
beginning of the declaration specifiers in a declaration is an
obsolescent feature.
Signed-off-by: NTobias Klauser <tklauser@distanz.ch>
Signed-off-by: NJesper Juhl <jesper.juhl@gmail.com>
      b1d18dc0
    • D
      [SPARC]: Remove SunOS and Solaris binary support. · ec98c6b9
      由 David S. Miller 提交于 
      As per Documentation/feature-removal-schedule.txt
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      ec98c6b9
  7. 21 4月, 2008 20 次提交
  9. 20 4月, 2008 1 次提交