+static int lpar_read_shared_partition (const perfstat_partition_total_t *data)
+{
+ static counter_t time_old;
+ static counter_t user_old;
+ static counter_t syst_old;
+ static counter_t wait_old;
+ static counter_t idle_old;
+ static counter_t unav_old;
+
+ counter_t user = (counter_t) data->puser;
+ counter_t syst = (counter_t) data->psys;
+ counter_t wait = (counter_t) data->pwait;
+ counter_t idle = (counter_t) data->pidle;
+ counter_t unav = 0;
+
+ /*
+ * On a shared partition, we're "entitled" to a certain amount of
+ * processing power, for example 250/100 of a physical CPU. Processing
+ * capacity not used by the partition may be assigned to a different
+ * partition by the hypervisor, so "idle" is hopefully a very small
+ * number.
+ *
+ * We calculate the amount of ticks assigned to a different partition
+ * from the number of ticks we're entitled to and the number of ticks
+ * we used up.
+ */
+ if (time_old != 0)
+ {
+ counter_t time_diff;
+ counter_t entitled_ticks;
+ counter_t consumed_ticks;
+ counter_t user_diff;
+ counter_t syst_diff;
+ counter_t wait_diff;
+ counter_t idle_diff;
+ counter_t unav_diff;
+
+ double entitled_pool_capacity;
+
+ /* Number of ticks since we last run. */
+ time_diff = ((counter_t) data->timebase_last) - time_old;
+
+ /* entitled_pool_capacity is in 1/100th of a CPU */
+ entitled_pool_capacity = 0.01 * ((double) data->entitled_pool_capacity);
+
+ /* The number of ticks this partition would have been entitled to. */
+ entitled_ticks = (counter_t) ((entitled_pool_capacity * ((double) time_diff)) + .5);
+
+ /* The number of ticks actually spent in the various states */
+ user_diff = user - user_old;
+ syst_diff = syst - syst_old;
+ wait_diff = wait - wait_old;
+ idle_diff = idle - idle_old;
+ consumed_ticks = user_diff + syst_diff + wait_diff + idle_diff;
+
+ if (entitled_ticks >= consumed_ticks)
+ unav_diff = entitled_ticks - consumed_ticks;
+ else
+ unav_diff = 0;
+ unav = unav_old + unav_diff;
+
+ lpar_submit ("user", user);
+ lpar_submit ("system", syst);
+ lpar_submit ("wait", wait);
+ lpar_submit ("idle", idle);
+ lpar_submit ("unavailable", unav);
+ }
+
+ time_old = (counter_t) data->timebase_last;
+ user_old = user;
+ syst_old = syst;
+ wait_old = wait;
+ idle_old = idle;
+ unav_old = unav;
+
+ return (0);
+} /* int lpar_read_shared_partition */
+
+static int lpar_read_dedicated_partition (const perfstat_partition_total_t *data)
+{
+ lpar_submit ("user", (counter_t) data->puser);
+ lpar_submit ("system", (counter_t) data->psys);
+ lpar_submit ("wait", (counter_t) data->pwait);
+ lpar_submit ("idle", (counter_t) data->pidle);
+
+ if (data->type.b.donate_enabled)
+ {
+ lpar_submit ("idle_donated", (counter_t) data->idle_donated_purr);
+ lpar_submit ("busy_donated", (counter_t) data->busy_donated_purr);
+ lpar_submit ("idle_stolen", (counter_t) data->idle_stolen_purr);
+ lpar_submit ("busy_stolen", (counter_t) data->busy_stolen_purr);
+ }
+
+ return (0);
+} /* int lpar_read_dedicated_partition */
+