Don't scan the entire Valgrind stack to check for impending
stack-overflow situations.  This causes an immense number of L2 misses
which are completely pointless, and the recent increase of the
Valgrind per-thread stack size from 64k to 1M greatly aggravates the
situation.



git-svn-id: svn://svn.valgrind.org/valgrind/trunk@11343 a5019735-40e9-0310-863c-91ae7b9d1cf9
3 files changed