On Tue, Sep 27, 2016 at 12:33:27PM -0700, Babu Moger wrote: > This new config parameter limits the space used for "Lock debugging: > prove locking correctness" by about 4MB. The current sparc systems have > the limitation of 32MB size for kernel size including .text, .data and > .bss sections. With PROVE_LOCKING feature, the kernel size could grow > beyond this limit and causing system boot-up issues. With this option, > kernel limits the size of the entries of lock_chains, stack_trace etc., > so that kernel fits in required size limit. This is not visible to user > and only used for sparc. > > Signed-off-by: Babu Moger <[email protected]>
You forgot to Cc Dave, and since you're touching sparc I need an Ack from him before I can queue this. Dave? > --- > arch/sparc/Kconfig | 1 + > lib/Kconfig.debug | 3 +++ > 2 files changed, 4 insertions(+), 0 deletions(-) > > diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig > index 59b0960..8da321c 100644 > --- a/arch/sparc/Kconfig > +++ b/arch/sparc/Kconfig > @@ -44,6 +44,7 @@ config SPARC > select ARCH_HAS_SG_CHAIN > select CPU_NO_EFFICIENT_FFS > select HAVE_ARCH_HARDENED_USERCOPY > + select PROVE_LOCKING_SMALL if PROVE_LOCKING > > config SPARC32 > def_bool !64BIT > diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug > index cab7405..597e589 100644 > --- a/lib/Kconfig.debug > +++ b/lib/Kconfig.debug > @@ -1084,6 +1084,9 @@ config PROVE_LOCKING > > For more details, see Documentation/locking/lockdep-design.txt. > > +config PROVE_LOCKING_SMALL > + bool > + > config LOCKDEP > bool > depends on DEBUG_KERNEL && TRACE_IRQFLAGS_SUPPORT && STACKTRACE_SUPPORT > && LOCKDEP_SUPPORT > -- > 1.7.1 >
