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| author |   Babu Moger <babu.moger@oracle.com> | 2016-11-02 09:36:32 -0700 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2016-11-18 11:33:19 -0800 |
| commit | e6b5f1be7afe1657c40c08082c562b1a036a54c1 (patch) | |
| tree | 6f1b8b2c21dff64eeb0741397381ae0cec56a417 | |
| parent | sunbmac: Fix compiler warning (diff) | |
| download | linux-dev-e6b5f1be7afe1657c40c08082c562b1a036a54c1.tar.xz linux-dev-e6b5f1be7afe1657c40c08082c562b1a036a54c1.zip | |
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>
| -rw-r--r-- | arch/sparc/Kconfig | 1 | ||||
| -rw-r--r-- | lib/Kconfig.debug | 3 |
2 files changed, 4 insertions, 0 deletions
diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig index 60145c9b9f84..165ecdd24d22 100644 --- a/arch/sparc/Kconfig +++ b/arch/sparc/Kconfig @@ -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 diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index b01e547d4d04..a6c8db1d62f6 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -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 |