KGDB_ROUNDUP_CPUS(9) KGDB Internals KGDB_ROUNDUP_CPUS(9)
NAME
kgdb_roundup_cpus - Get other CPUs into a holding pattern
SYNOPSIS
void kgdb_roundup_cpus(unsigned long flags);
ARGUMENTS
flags
Current IRQ state
DESCRIPTION
On SMP systems, we need to get the attention of the other CPUs and get them into a known state. This should do what is needed to get the
other CPUs to call kgdb_wait. Note that on some arches, the NMI approach is not used for rounding up all the CPUs. For example, in case of
MIPS, smp_call_function is used to roundup CPUs. In this case, we have to make sure that interrupts are enabled before calling
smp_call_function. The argument to this function is the flags that will be used when restoring the interrupts. There is local_irq_save call
before kgdb_roundup_cpus.
On non-SMP systems, this is not called.
AUTHORS
Jason Wessel <jason.wessel@windriver.com>
Author.
Tom Rini <trini@kernel.crashing.org>
Author.
Amit S. Kale <amitkale@linsyssoft.com>
Author.
COPYRIGHT
Kernel Hackers Manual 2.6. July 2010 KGDB_ROUNDUP_CPUS(9)
