Looks like these patches are lost in the mix. Resending with following note. Dave, This requires your Ack as it touches sparc. Peter is waiting for your Ack to queue it. Here is our previous discussion. http://marc.info/?t=147500486300001&r=1&w=2 These patches limit the static allocations for lockdep data structures used for debugging locking correctness. For sparc, all the kernel's code, data, and bss, must have locked translations in the TLB so that we don't get TLB misses on kernel code and data. Current sparc chips have 8 TLB entries available that may be locked down, and with a 4mb page size, this gives a maximum of 32MB. With PROVE_LOCKING we could go over this limit and cause system boot-up problems. These patches limit the static allocations so that everything fits in current required size limit. patch 1 : Adds new config parameter CONFIG_PROVE_LOCKING_SMALL Patch 2 : Adjusts the sizes based on the new config parameter v2-> v3: Some more comments from Sam Ravnborg and Peter Zijlstra. Defined PROVE_LOCKING_SMALL as invisible and moved the selection to arch/sparc/Kconfig. v1-> v2: As suggested by Peter Zijlstra, keeping the default as is. Introduced new config variable CONFIG_PROVE_LOCKING_SMALL to handle sparc specific case. v0: Initial revision. Babu Moger (2): config: Adding the new config parameter CONFIG_PROVE_LOCKING_SMALL for sparc lockdep: Limit static allocations if PROVE_LOCKING_SMALL is defined arch/sparc/Kconfig | 1 + kernel/locking/lockdep_internals.h | 20 +++++++++++++++++--- lib/Kconfig.debug | 3 +++ 3 files changed, 21 insertions(+), 3 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe sparclinux" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
