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Add memory barrier to the blas_lock implementation for Linux 

as recommended by cparrott73 in #2760
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Martin Kroeker 2020-08-09 19:17:04 +02:00 committed by GitHub
parent 9eb897cc01
commit c9d32674ea
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common_power.h
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@ -105,6 +105,7 @@ static void INLINE blas_lock(volatile unsigned long *address){
" bne- 1f\n" " bne- 1f\n"
" stwcx. %2,0, %1\n" " stwcx. %2,0, %1\n"
" bne- 0b\n" " bne- 0b\n"
" isync\n"
"1: " "1: "
: "=&r"(ret) : "=&r"(ret)
: "r"(address), "r" (val) : "r"(address), "r" (val)