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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