linux/arch
Konrad Rzeszutek 1c978b935e Inhibit NMI watchdog when Alt-SysRq-T operation is underway
On large memory configuration with not so fast CPUs the NMI watchdog is
triggered when memory addresses are being gathered and printed.  The code
paths for Alt-SysRq-t are sprinkled with touch_nmi_watchdog in various
places but not in this routine (or in the loop that utilizes this
function).  The patch has been tested for regression on large CPU+memory
configuration (128 logical CPUs + 224 GB) and 1,2,4,16-CPU sockets with
various memory sizes (1,2,4,6,20).

Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-17 10:23:04 -07:00
..
alpha PTRACE_POKEDATA consolidation 2007-07-17 10:23:03 -07:00
arm PTRACE_POKEDATA consolidation 2007-07-17 10:23:03 -07:00
arm26 PTRACE_POKEDATA consolidation 2007-07-17 10:23:03 -07:00
avr32 PTRACE_POKEDATA consolidation 2007-07-17 10:23:03 -07:00
blackfin Blackfin arch: add missing CONFIG_LARGE_ALLOCS when upstream merging 2007-07-12 14:55:05 +08:00
cris PTRACE_POKEDATA consolidation 2007-07-17 10:23:03 -07:00
frv PTRACE_POKEDATA consolidation 2007-07-17 10:23:03 -07:00
h8300 PTRACE_POKEDATA consolidation 2007-07-17 10:23:03 -07:00
i386 Kprobes on select architectures no longer EXPERIMENTAL 2007-07-17 10:23:03 -07:00
ia64 Kprobes on select architectures no longer EXPERIMENTAL 2007-07-17 10:23:03 -07:00
m32r PTRACE_POKEDATA consolidation 2007-07-17 10:23:03 -07:00
m68k PTRACE_POKEDATA consolidation 2007-07-17 10:23:03 -07:00
m68knommu PTRACE_POKEDATA consolidation 2007-07-17 10:23:03 -07:00
mips sb1250-duart.c: SB1250 DUART serial support 2007-07-17 10:23:03 -07:00
parisc kallsyms: make KSYM_NAME_LEN include space for trailing '\0' 2007-07-17 10:23:03 -07:00
powerpc Kprobes on select architectures no longer EXPERIMENTAL 2007-07-17 10:23:03 -07:00
ppc Report that kernel is tainted if there was an OOPS 2007-07-17 10:23:02 -07:00
s390 PTRACE_POKEDATA consolidation 2007-07-17 10:23:03 -07:00
sh PTRACE_POKEDATA consolidation 2007-07-17 10:23:03 -07:00
sh64 PTRACE_POKEDATA consolidation 2007-07-17 10:23:03 -07:00
sparc Report that kernel is tainted if there was an OOPS 2007-07-17 10:23:02 -07:00
sparc64 Report that kernel is tainted if there was an OOPS 2007-07-17 10:23:02 -07:00
um PTRACE_POKEDATA consolidation 2007-07-17 10:23:03 -07:00
v850 PTRACE_POKEDATA consolidation 2007-07-17 10:23:03 -07:00
x86_64 Inhibit NMI watchdog when Alt-SysRq-T operation is underway 2007-07-17 10:23:04 -07:00
xtensa PTRACE_POKEDATA consolidation 2007-07-17 10:23:03 -07:00