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authorDavid S. Miller <davem@davemloft.net>2016-11-18 11:33:26 -0800
committerDavid S. Miller <davem@davemloft.net>2016-11-18 11:33:26 -0800
commit79c3dcbabb8fc9df45e283e288938a45ef1a7a16 (patch)
tree737814fa3368ed63e4cdb121d1ac2986bb54f4cd /Documentation
parent1a9bbccaf8182da368dae454b57dc1c55074d266 (diff)
parente245d99e6cc4a0b904b87b46b4f60d46fb405987 (diff)
Merge branch 'sparc-lockdep-small'
Babu Moger says: ==================== Adjust lockdep static allocations for sparc 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. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
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