powerpc: Display processor virtualization resource allocs in lparcfg

This patch updates the output from /proc/ppc64/lparcfg to display the
processor virtualization resource allocations for a shared processor
partition.

This information is already gathered via the h_get_ppp call, we just
have to make sure that the ibm,partition-performance-parameters-level
property is >= 1 to ensure that the information is valid.

Signed-off-by: Nathan Fontenot <nfont@austin.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

1 files changed, 38 insertions, 2 deletions

diff --git a/arch/powerpc/kernel/lparcfg.c b/arch/powerpc/kernel/lparcfg.c
index 78b3f7840ade..2419cc706ff1 100644
--- a/arch/powerpc/kernel/lparcfg.c
+++ b/arch/powerpc/kernel/lparcfg.c
@@ -169,6 +169,9 @@ struct hvcall_ppp_data {
         u8      unallocated_weight;
         u16     active_procs_in_pool;
         u16     active_system_procs;
+        u16     phys_platform_procs;
+        u32     max_proc_cap_avail;
+        u32     entitled_proc_cap_avail;
 };
 
 /*
@@ -190,13 +193,18 @@ struct hvcall_ppp_data {
  *            XX - Unallocated Variable Processor Capacity Weight.
  *              XXXX - Active processors in Physical Processor Pool.
  *                  XXXX  - Processors active on platform.
+ *  R8 (QQQQRRRRRRSSSSSS). if ibm,partition-performance-parameters-level >= 1
+ *      XXXX - Physical platform procs allocated to virtualization.
+ *          XXXXXX - Max procs capacity % available to the partitions pool.
+ *                XXXXXX - Entitled procs capacity % available to the
+ *                         partitions pool.
  */
 static unsigned int h_get_ppp(struct hvcall_ppp_data *ppp_data)
 {
         unsigned long rc;
-        unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
+        unsigned long retbuf[PLPAR_HCALL9_BUFSIZE];
 
-        rc = plpar_hcall(H_GET_PPP, retbuf);
+        rc = plpar_hcall9(H_GET_PPP, retbuf);
 
         ppp_data->entitlement = retbuf[0];
         ppp_data->unallocated_entitlement = retbuf[1];
@@ -210,6 +218,10 @@ static unsigned int h_get_ppp(struct hvcall_ppp_data *ppp_data)
         ppp_data->active_procs_in_pool = (retbuf[3] >> 2 * 8) & 0xffff;
         ppp_data->active_system_procs = retbuf[3] & 0xffff;
 
+        ppp_data->phys_platform_procs = retbuf[4] >> 6 * 8;
+        ppp_data->max_proc_cap_avail = (retbuf[4] >> 3 * 8) & 0xffffff;
+        ppp_data->entitled_proc_cap_avail = retbuf[4] & 0xffffff;
+
         return rc;
 }
 
@@ -234,6 +246,8 @@ static unsigned h_pic(unsigned long *pool_idle_time,
 static void parse_ppp_data(struct seq_file *m)
 {
         struct hvcall_ppp_data ppp_data;
+        struct device_node *root;
+        const int *perf_level;
         int rc;
 
         rc = h_get_ppp(&ppp_data);
@@ -267,6 +281,28 @@ static void parse_ppp_data(struct seq_file *m)
         seq_printf(m, "capped=%d\n", ppp_data.capped);
         seq_printf(m, "unallocated_capacity=%lld\n",
                    ppp_data.unallocated_entitlement);
+
+        /* The last bits of information returned from h_get_ppp are only
+         * valid if the ibm,partition-performance-parameters-level
+         * property is >= 1.
+         */
+        root = of_find_node_by_path("/");
+        if (root) {
+                perf_level = of_get_property(root,
+                                "ibm,partition-performance-parameters-level",
+                                             NULL);
+                if (perf_level && (*perf_level >= 1)) {
+                        seq_printf(m,
+                            "physical_procs_allocated_to_virtualization=%d\n",
+                                   ppp_data.phys_platform_procs);
+                        seq_printf(m, "max_proc_capacity_available=%d\n",
+                                   ppp_data.max_proc_cap_avail);
+                        seq_printf(m, "entitled_proc_capacity_available=%d\n",
+                                   ppp_data.entitled_proc_cap_avail);
+                }
+
+                of_node_put(root);
+        }
 }
 
 /**