+ return hz;
+}
+
+uint32_t usec_to_jiffies(usec_t u) {
+ uint32_t hz = sysconf_clock_ticks_cached();
+ return DIV_ROUND_UP(u, USEC_PER_SEC / hz);
+}
+
+usec_t jiffies_to_usec(uint32_t j) {
+ uint32_t hz = sysconf_clock_ticks_cached();
+ return DIV_ROUND_UP(j * USEC_PER_SEC, hz);