linux.git/arch/powerpc/kernel/crash.c, branch v3.0

powerpc/kdump64: Don't reference freed memory as pacas

2011-05-19T04:30:44+00:00

Starting with 1426d5a3bd07589534286375998c0c8c6fdc5260 (powerpc:
Dynamically allocate pacas) the space for pacas beyond cpu_possible
is freed, but we failed to update the loop in crash.c.

Since c1854e00727f50f7ac99e98d26ece04c087ef785 (powerpc: Set nr_cpu_ids
early and use it to free PACAs) the number of pacas allocated is
always nr_cpu_ids.

Signed-off-by: Milton Miller 
Cc:  # .34.x
Signed-off-by: Benjamin Herrenschmidt

powerpc/kexec: Fix build failure on 32-bit SMP

2011-05-04T05:22:59+00:00

Commit b987812b3fcaf70fdf0037589e5d2f5f2453e6ce left
crash_kexec_wait_realmode() undefined for UP.

Commit 7c7a81b53e581d727d069cc45df5510516faac31 defined it for UP but
left it undefined for 32-bit SMP.

Seems like people are getting confused by nested #ifdef's, so move the
definitions of crash_kexec_wait_realmode() after the #ifdef CONFIG_SMP
section.

Compile-tested with 32-bit UP, 32-bit SMP and 64-bit SMP configurations.

Signed-off-by: Ben Hutchings 
Tested-by: Paul Gortmaker 
Signed-off-by: Benjamin Herrenschmidt

powerpc: Convert old cpumask API into new one

2011-05-04T05:22:59+00:00

Adapt new API.

Almost change is trivial. Most important change is the below line
because we plan to change task->cpus_allowed implementation.

-       ctx->cpus_allowed = current->cpus_allowed;

Signed-off-by: KOSAKI Motohiro 
Signed-off-by: Benjamin Herrenschmidt

powerpc/kexec: Fix regression causing compile failure on UP

2011-04-18T03:06:45+00:00

Recent commit b987812b3fcaf70fdf0037589e5d2f5f2453e6ce caused
a compile failure on UP because a considerably large block
of the file was included within CONFIG_SMP, hence making a stub
function not exposed on UP builds when it needed to be.

Relocate the stub to the #else /* ! CONFIG_SMP */ section
and also annotate the relevant else/endif so that nobody
else falls into the same trap I did.

Reported-by: Michael Guntsche 
Signed-off-by: Paul Gortmaker 
Signed-off-by: Benjamin Herrenschmidt

powerpc/kexec: Fix mismatched ifdefs for PPC64/SMP.

2011-04-05T06:22:10+00:00

Commit b3df895aebe091b1657 "powerpc/kexec: Add support for FSL-BookE"
introduced the original PPC_STD_MMU_64 checks around the function
crash_kexec_wait_realmode().   Then commit c2be05481f61252
"powerpc: Fix default_machine_crash_shutdown #ifdef botch" changed
the ifdef around the calling site to add a check on SMP, but the
ifdef around the function itself was left unchanged, leaving an
unused function for PPC_STD_MMU_64=y and SMP=n

Rather than have two ifdefs that can get out of sync like this,
simply put the corrected conditional around the function and use
a stub to get rid of one set of ifdefs completely.

Signed-off-by: Paul Gortmaker 
Signed-off-by: Benjamin Herrenschmidt

powerpc/kdump: Move crash_kexec_stop_spus to kdump crash handler

2011-01-21T03:08:36+00:00

Use the crash handler hooks to run the SPU stop code, just like we do for
ehea and cell RAS code.

While I'm here I noticed "CPUSs reliabally"

so fix the spelling MISTAKESs reliabally.

Signed-off-by: Anton Blanchard 
Signed-off-by: Benjamin Herrenschmidt

powerpc/kexec: make masking/disabling interrupts generic

2010-10-14T05:52:46+00:00

Right now just the kexec crash pathway turns turns off the interrupts.
Pull that out and make a generic version for use elsewhere

Signed-off-by: Matthew McClintock 
Signed-off-by: Kumar Gala

powerpc/kdump: Stop all other CPUs before running crash handlers

2010-08-24T05:26:27+00:00

During kdump we run the crash handlers first then stop all other CPUs.
We really want to stop all CPUs as close to the fail as possible and also
have a very controlled environment for running the crash handlers, so it
makes sense to reverse the order.

Signed-off-by: Anton Blanchard 
Acked-by: Matt Evans 
Signed-off-by: Benjamin Herrenschmidt

lmb: rename to memblock

2010-07-14T07:14:00+00:00

via following scripts

      FILES=$(find * -type f | grep -vE 'oprofile|[^K]config')

      sed -i \
        -e 's/lmb/memblock/g' \
        -e 's/LMB/MEMBLOCK/g' \
        $FILES

      for N in $(find . -name lmb.[ch]); do
        M=$(echo $N | sed 's/lmb/memblock/g')
        mv $N $M
      done

and remove some wrong change like lmbench and dlmb etc.

also move memblock.c from lib/ to mm/

Suggested-by: Ingo Molnar 
Acked-by: "H. Peter Anvin" 
Acked-by: Benjamin Herrenschmidt 
Acked-by: Linus Torvalds 
Signed-off-by: Yinghai Lu 
Signed-off-by: Benjamin Herrenschmidt

powerpc: Fix default_machine_crash_shutdown #ifdef botch

2010-07-08T08:11:45+00:00

crash_kexec_wait_realmode() is defined only if CONFIG_PPC_STD_MMU_64
and CONFIG_SMP, but is called if CONFIG_PPC_STD_MMU_64 even if !CONFIG_SMP.
Fix the conditional compilation around the invocation.

Signed-off-by: Paul E. McKenney 
Acked-by: Michael Neuling 
Signed-off-by: Benjamin Herrenschmidt