Commit e6b5f1be authored by Babu Moger's avatar Babu Moger Committed by David S. Miller

config: Adding the new config parameter CONFIG_PROVE_LOCKING_SMALL for sparc

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: default avatarBabu Moger <babu.moger@oracle.com>
Acked-by: default avatarSam Ravnborg <sam@ravnborg.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 1a9bbcca
...@@ -43,6 +43,7 @@ config SPARC ...@@ -43,6 +43,7 @@ config SPARC
select ARCH_HAS_SG_CHAIN select ARCH_HAS_SG_CHAIN
select CPU_NO_EFFICIENT_FFS select CPU_NO_EFFICIENT_FFS
select HAVE_ARCH_HARDENED_USERCOPY select HAVE_ARCH_HARDENED_USERCOPY
select PROVE_LOCKING_SMALL if PROVE_LOCKING
config SPARC32 config SPARC32
def_bool !64BIT def_bool !64BIT
......
...@@ -1085,6 +1085,9 @@ config PROVE_LOCKING ...@@ -1085,6 +1085,9 @@ config PROVE_LOCKING
For more details, see Documentation/locking/lockdep-design.txt. For more details, see Documentation/locking/lockdep-design.txt.
config PROVE_LOCKING_SMALL
bool
config LOCKDEP config LOCKDEP
bool bool
depends on DEBUG_KERNEL && TRACE_IRQFLAGS_SUPPORT && STACKTRACE_SUPPORT && LOCKDEP_SUPPORT depends on DEBUG_KERNEL && TRACE_IRQFLAGS_SUPPORT && STACKTRACE_SUPPORT && LOCKDEP_SUPPORT
......
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