Commit e6b5f1be authored Nov 02, 2016 by Babu Moger Committed by David S. Miller Nov 18, 2016

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: Babu Moger <babu.moger@oracle.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent 1a9bbcca

arch/sparc/Kconfig

+1 −0

Original line number	Diff line number	Diff line
		@@ -43,6 +43,7 @@ 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

lib/Kconfig.debug

+3 −0

Original line number	Diff line number	Diff line
		@@ -1085,6 +1085,9 @@ 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

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