Re: [PATCH makedumpfile 0/2] LZO Compression Support

2012-02-20 Thread Atsushi Kumagai
Hello Hatayama-san, On Mon, 20 Feb 2012 18:10:00 +0900 HATAYAMA Daisuke wrote: > The following series implements LZO compression support to > makedumpfile. LZO is as good as in size but by far better in speed > than ZLIB, readucing down time during generation of crash dump and > refiltering. >

Re: [tip:x86/debug] x86/kdump: No need to disable ioapic/ lapic in crash path

2012-02-20 Thread Don Zickus
On Mon, Feb 20, 2012 at 02:17:33PM +0900, HATAYAMA Daisuke wrote: > From: Don Zickus > Subject: Re: [tip:x86/debug] x86/kdump: No need to disable ioapic/ lapic in > crash path > Date: Fri, 17 Feb 2012 15:18:42 -0500 > > > On Sat, Feb 18, 2012 at 12:49:16AM +0900, HATAYAMA Daisuke wrote: > >> A f

RE: [PATCH] x86, kdump, ioapic: Fix kdump race with migrating irq

2012-02-20 Thread Seiji Aguchi
> -void disable_IO_APIC(void) > +void disable_IO_APIC(int force) > { > /* >+ * Use force to bust the io_apic spinlock >+ * >+ * There is a case where kdump can race with irq >+ * migration such that kdump will inject an NMI >+ * while another cpu holds the ioapic

Re: [tip:x86/debug] x86/kdump: No need to disable ioapic/ lapic in crash path

2012-02-20 Thread Don Zickus
On Fri, Feb 17, 2012 at 07:21:52PM -0800, Eric W. Biederman wrote: > Don Zickus writes: > > > On Fri, Feb 17, 2012 at 04:41:01AM -0800, Eric W. Biederman wrote: > >> > >> The fix with a guarantee of no more scope creep is to just disable the > >> nmi watchdog on the kexec on panic path. > >> >

Re: [UPDATED] [RFC PATCH v7 03/10] fadump: Register for firmware assisted dump.

2012-02-20 Thread Mahesh J Salgaonkar
On 2012-02-20 11:02:51 Mon, Paul Mackerras wrote: > On Thu, Feb 16, 2012 at 04:44:30PM +0530, Mahesh J Salgaonkar wrote: > > If I have read the code correctly, we are going to get this printk on > non-pSeries machines or on older pSeries machines, even if the user > has not put the fadump=on optio

Re: [PATCH v1 0/4][makedumpfile] vmalloc translation support for PPC32

2012-02-20 Thread Suzuki K. Poulose
On 02/20/2012 03:26 PM, Atsushi Kumagai wrote: Hi, Benjamin Hi, Suzuki On Fri, 17 Feb 2012 19:39:29 +1100 Benjamin Herrenschmidt wrote: On Fri, 2012-02-17 at 11:25 +0530, Suzuki K. Poulose wrote: Could you tell me what kind of data is stored in vmalloc region in PPC ? I want to estimate im

Re: [PATCH v1 0/4][makedumpfile] vmalloc translation support for PPC32

2012-02-20 Thread Atsushi Kumagai
Hi, Benjamin Hi, Suzuki On Fri, 17 Feb 2012 19:39:29 +1100 Benjamin Herrenschmidt wrote: > On Fri, 2012-02-17 at 11:25 +0530, Suzuki K. Poulose wrote: > > > Could you tell me what kind of data is stored in vmalloc region in > > PPC ? > > > I want to estimate importance of your patches for makedu

Re: [PATCH][makedumpfile] sadump: check if given cpu is online in per-cpu related helper functions

2012-02-20 Thread HATAYAMA Daisuke
Hello Kumagai-san, From: Atsushi Kumagai Subject: Re: [PATCH][makedumpfile] sadump: check if given cpu is online in per-cpu related helper functions Date: Mon, 20 Feb 2012 17:02:53 +0900 > Hi Hatayama-san, > > On Mon, 20 Feb 2012 11:19:15 +0900 ( ) > HATAYAMA Daisuke wrote: > >> Per-cpu he

[PATCH makedumpfile 0/2] LZO Compression Support

2012-02-20 Thread HATAYAMA Daisuke
The following series implements LZO compression support to makedumpfile. LZO is as good as in size but by far better in speed than ZLIB, readucing down time during generation of crash dump and refiltering. The RFC discussion: http://lists.infradead.org/pipermail/kexec/2011-November/005783.html

[PATCH makedumpfile 1/2] Add LZO Support

2012-02-20 Thread HATAYAMA Daisuke
Add -l option as one of the command-line options users can specify. If -l option is specified, then makedumpfile generates dumpfile in kdump-compressed format with lzo compression by each page. Signed-off-by: HATAYAMA Daisuke --- Makefile |2 +- diskdump_mod.h |3 ++- makedumpfile

[PATCH makedumpfile 2/2] Add help and manual messages about LZO compression support

2012-02-20 Thread HATAYAMA Daisuke
Signed-off-by: HATAYAMA Daisuke --- makedumpfile.8 |6 +++--- print_info.c | 16 2 files changed, 11 insertions(+), 11 deletions(-) diff --git a/makedumpfile.8 b/makedumpfile.8 index 4733420..f607bf5 100644 --- a/makedumpfile.8 +++ b/makedumpfile.8 @@ -121,8 +121,8 @@ c

Re: [PATCH][makedumpfile] sadump: check if given cpu is online in per-cpu related helper functions

2012-02-20 Thread Atsushi Kumagai
Hi Hatayama-san, On Mon, 20 Feb 2012 11:19:15 +0900 ( ) HATAYAMA Daisuke wrote: > Per-cpu helper functions sanity check given cpu ids if they are > not-minus and less than the maximal but it should have checked if they > are online. By this mistake, one cannot see generated vmcore correctly >