Will Deacon wrote:
> { >- u32 vct_lo, vct_hi, tmp_hi; >- >- do { >- vct_hi = readl_relaxed(arch_counter_base + CNTVCT_HI); >- vct_lo = readl_relaxed(arch_counter_base + CNTVCT_LO); >- tmp_hi = readl_relaxed(arch_counter_base + CNTVCT_HI); >- } while (vct_hi != tmp_hi); >- >- return ((u64) vct_hi << 32) | vct_lo; >+ return readq(arch_counter_base + CNTVCT_LO);Please drop this patch. It doesn't work.
On systems where readq() does work, wouldn't it be more optimal than the above while-loop?
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