linux/arch/powerpc
Satyam Sharma 8fd7675c09 [POWERPC] Avoid pointless WARN_ON(irqs_disabled()) from panic codepath
> ------------[ cut here ]------------
> Badness at arch/powerpc/kernel/smp.c:202

comes when smp_call_function_map() has been called with irqs disabled,
which is illegal. However, there is a special case, the panic() codepath,
when we do not want to warn about this -- warning at that time is pointless
anyway, and only serves to scroll away the *real* cause of the panic and
distracts from the real bug.

* So let's extract the WARN_ON() from smp_call_function_map() into all its
  callers -- smp_call_function() and smp_call_function_single()

* Also, introduce another caller of smp_call_function_map(), namely
  __smp_call_function() (and make smp_call_function() a wrapper over this)
  which does *not* warn about disabled irqs

* Use this __smp_call_function() from the panic codepath's smp_send_stop()

We also end having to move code of smp_send_stop() below the definition
of __smp_call_function().

Signed-off-by: Satyam Sharma <satyam@infradead.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-22 14:49:22 +10:00
..
boot [POWERPC] mpc5200: Add cuimage support for mpc5200 boards 2007-09-22 14:49:22 +10:00
configs [POWERPC] 4xx: Convert Seqouia flash mappings to new binding 2007-09-19 21:13:16 -05:00
kernel [POWERPC] Avoid pointless WARN_ON(irqs_disabled()) from panic codepath 2007-09-22 14:49:22 +10:00
lib [POWERPC] Fix section mismatch in PCI code 2007-09-19 15:25:34 +10:00
math-emu [POWERPC] ppc math-emu needs -fno-builtin-fabs for math.c and fabs.c 2006-09-26 15:24:35 +10:00
mm [POWERPC] Remove barriers from the SLB shadow buffer update 2007-09-19 14:40:54 +10:00
oprofile Remove fs.h from mm.h 2007-07-29 17:09:29 -07:00
platforms [POWERPC] add Kconfig option for optimizing for cell 2007-09-22 14:49:22 +10:00
sysdev [POWERPC] Support setting affinity for U3/U4 MSI sources 2007-09-22 14:49:22 +10:00
xmon [POWERPC] fix showing xmon help 2007-07-22 21:30:58 +10:00
.gitignore [POWERPC] Add files build to .gitignore 2006-12-04 20:41:29 +11:00
Kconfig [POWERPC] IOMMU virtual merge is no longer experimental 2007-09-14 01:33:19 +10:00
Kconfig.debug [POWERPC] Export virq mapping via debugfs 2007-09-14 01:33:20 +10:00
Makefile [POWERPC] add Kconfig option for optimizing for cell 2007-09-22 14:49:22 +10:00