Hi all, We have a free-running counter on x86 PCIe bus and plan to use it as a clocksource. The 'read' field of the clocksource structure reads from this free-running counter and returns this value. Since PCIe reads are synchronous, is it safe to use readl() API to read this free-running counter value in struct clocksource.read()? If not, what's the best way to read the counter value from the struct clocksource read field? Is there any other faster method to read from PCIe device memory? -- Thanks, Sekhar
