hw/ppc/spapr.c: cleaning up qdev_get_machine() calls

PATCH Applied Daniel Henrique Barboza 3 participants 3 messages Sep 6, 2017 – Sep 9, 2017

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Daniel Henrique Barboza

author

2017-09-06 18:43 UTC #0 lore raw

PATCH 1/1 hw/ppc/spapr.c: cleaning up qdev_get_machine() calls

This patch removes the qdev_get_machine() calls that are made in spapr.c in situations where we can get an existing pointer for the MachineState by either passing it as an argument to the function or by using other already available pointers.

The following changes were made:

- spapr_node0_size: static function that is called two times:
at spapr_setup_hpt_and_vrma and ppc_spapr_init. In both cases we can pass an existing MachineState pointer to it.

- spapr_build_fdt: MachineState pointer can be retrieved from the existing sPAPRMachineState pointer.

- spapr_boot_set: the opaque in the first arg is a sPAPRMachineState pointer as we can see inside ppc_spapr_init:

    qemu_register_boot_set(spapr_boot_set, spapr);

We can get a MachineState pointer from it.

- spapr_machine_device_plug and spapr_machine_device_unplug_request: the MachineState, sPAPRMachineState, MachineClass and sPAPRMachineClass pointers can all be retrieved from the HotplugHandler pointer.

Signed-off-by Daniel Henrique Barboza <[email protected]>

---
 hw/ppc/spapr.c | 19 +++++++++----------
 1 file changed, 9 insertions(+), 10 deletions(-)

hw/ppc/spapr.c +9 ~~-10~~

index cec441c..6ac3390 100644
@@ -390,10 +390,8 @@ static int spapr_fixup_cpu_dt(void *fdt, sPAPRMachineState *spapr)
     return ret;
 }
 
-static hwaddr spapr_node0_size(void)
+static hwaddr spapr_node0_size(MachineState *machine)
 {
-    MachineState *machine = MACHINE(qdev_get_machine());
-
     if (nb_numa_nodes) {
         int i;
         for (i = 0; i < nb_numa_nodes; ++i) {

@@ -1027,7 +1025,7 @@ static void *spapr_build_fdt(sPAPRMachineState *spapr,
                              hwaddr rtas_addr,
                              hwaddr rtas_size)
 {
-    MachineState *machine = MACHINE(qdev_get_machine());
+    MachineState *machine = MACHINE(spapr);
     MachineClass *mc = MACHINE_GET_CLASS(machine);
     sPAPRMachineClass *smc = SPAPR_MACHINE_GET_CLASS(machine);
     int ret;

@@ -1347,7 +1345,7 @@ void spapr_setup_hpt_and_vrma(sPAPRMachineState *spapr)
     spapr_reallocate_hpt(spapr, hpt_shift, &error_fatal);
 
     if (spapr->vrma_adjust) {
-        spapr->rma_size = kvmppc_rma_size(spapr_node0_size(),
+        spapr->rma_size = kvmppc_rma_size(spapr_node0_size(MACHINE(spapr)),
                                           spapr->htab_shift);
     }
     /* We're setting up a hash table, so that means we're not radix */

@@ -2007,7 +2005,7 @@ static SaveVMHandlers savevm_htab_handlers = {
 static void spapr_boot_set(void *opaque, const char *boot_device,
                            Error **errp)
 {
-    MachineState *machine = MACHINE(qdev_get_machine());
+    MachineState *machine = MACHINE(opaque);
     machine->boot_order = g_strdup(boot_device);
 }

@@ -2154,7 +2152,7 @@ static void ppc_spapr_init(MachineState *machine)
     MemoryRegion *rma_region;
     void *rma = NULL;
     hwaddr rma_alloc_size;
-    hwaddr node0_size = spapr_node0_size();
+    hwaddr node0_size = spapr_node0_size(machine);
     long load_limit, fw_size;
     char *filename;
     Error *resize_hpt_err = NULL;

@@ -3198,7 +3196,8 @@ out:
 static void spapr_machine_device_plug(HotplugHandler *hotplug_dev,
                                       DeviceState *dev, Error **errp)
 {
-    sPAPRMachineClass *smc = SPAPR_MACHINE_GET_CLASS(qdev_get_machine());
+    MachineState *ms = MACHINE(hotplug_dev);
+    sPAPRMachineClass *smc = SPAPR_MACHINE_GET_CLASS(ms);
 
     if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) {
         int node;

@@ -3247,8 +3246,8 @@ static void spapr_machine_device_plug(HotplugHandler *hotplug_dev,
 static void spapr_machine_device_unplug_request(HotplugHandler *hotplug_dev,
                                                 DeviceState *dev, Error **errp)
 {
-    sPAPRMachineState *sms = SPAPR_MACHINE(qdev_get_machine());
-    MachineClass *mc = MACHINE_GET_CLASS(qdev_get_machine());
+    sPAPRMachineState *sms = SPAPR_MACHINE(OBJECT(hotplug_dev));
+    MachineClass *mc = MACHINE_GET_CLASS(sms);
 
     if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) {
         if (spapr_ovec_test(sms->ov5_cas, OV5_HP_EVT)) {

Signature · 1 line

2.9.4

Greg Kurz

Reviewed-by on v1 1/1

2017-09-07 15:21 UTC #1 lore raw

Quoted 19 lines · On Wed, 6 Sep 2017 15:43:05 -0300 Daniel Henrique Barboza…

This patch removes the qdev_get_machine() calls that are made in spapr.c in situations where we can get an existing pointer for the MachineState by either passing it as an argument to the function or by using other already available pointers.
The following changes were made:
- spapr_node0_size: static function that is called two times:
at spapr_setup_hpt_and_vrma and ppc_spapr_init. In both cases we can pass an existing MachineState pointer to it.
- spapr_build_fdt: MachineState pointer can be retrieved from the existing sPAPRMachineState pointer.
- spapr_boot_set: the opaque in the first arg is a sPAPRMachineState pointer as we can see inside ppc_spapr_init:
    qemu_register_boot_set(spapr_boot_set, spapr);

Quoted 8 lines

We can get a MachineState pointer from it.
- spapr_machine_device_plug and spapr_machine_device_unplug_request: the MachineState, sPAPRMachineState, MachineClass and sPAPRMachineClass pointers can all be retrieved from the HotplugHandler pointer.
Signed-off-by Daniel Henrique Barboza <[email protected]>
---

It makes sense for me.

Reviewed-by Greg Kurz <[email protected]>

Quoted 76 lines

 hw/ppc/spapr.c | 19 +++++++++----------
 1 file changed, 9 insertions(+), 10 deletions(-)

hw/ppc/spapr.c +9 ~~-10~~

index cec441c..6ac3390 100644
@@ -390,10 +390,8 @@ static int spapr_fixup_cpu_dt(void *fdt, sPAPRMachineState *spapr)
     return ret;
 }
 
-static hwaddr spapr_node0_size(void)
+static hwaddr spapr_node0_size(MachineState *machine)
 {
-    MachineState *machine = MACHINE(qdev_get_machine());
-
     if (nb_numa_nodes) {
         int i;
         for (i = 0; i < nb_numa_nodes; ++i) {

@@ -1027,7 +1025,7 @@ static void *spapr_build_fdt(sPAPRMachineState *spapr,
                              hwaddr rtas_addr,
                              hwaddr rtas_size)
 {
-    MachineState *machine = MACHINE(qdev_get_machine());
+    MachineState *machine = MACHINE(spapr);
     MachineClass *mc = MACHINE_GET_CLASS(machine);
     sPAPRMachineClass *smc = SPAPR_MACHINE_GET_CLASS(machine);
     int ret;

@@ -1347,7 +1345,7 @@ void spapr_setup_hpt_and_vrma(sPAPRMachineState *spapr)
     spapr_reallocate_hpt(spapr, hpt_shift, &error_fatal);
 
     if (spapr->vrma_adjust) {
-        spapr->rma_size = kvmppc_rma_size(spapr_node0_size(),
+        spapr->rma_size = kvmppc_rma_size(spapr_node0_size(MACHINE(spapr)),
                                           spapr->htab_shift);
     }
     /* We're setting up a hash table, so that means we're not radix */

@@ -2007,7 +2005,7 @@ static SaveVMHandlers savevm_htab_handlers = {
 static void spapr_boot_set(void *opaque, const char *boot_device,
                            Error **errp)
 {
-    MachineState *machine = MACHINE(qdev_get_machine());
+    MachineState *machine = MACHINE(opaque);
     machine->boot_order = g_strdup(boot_device);
 }

@@ -2154,7 +2152,7 @@ static void ppc_spapr_init(MachineState *machine)
     MemoryRegion *rma_region;
     void *rma = NULL;
     hwaddr rma_alloc_size;
-    hwaddr node0_size = spapr_node0_size();
+    hwaddr node0_size = spapr_node0_size(machine);
     long load_limit, fw_size;
     char *filename;
     Error *resize_hpt_err = NULL;

@@ -3198,7 +3196,8 @@ out:
 static void spapr_machine_device_plug(HotplugHandler *hotplug_dev,
                                       DeviceState *dev, Error **errp)
 {
-    sPAPRMachineClass *smc = SPAPR_MACHINE_GET_CLASS(qdev_get_machine());
+    MachineState *ms = MACHINE(hotplug_dev);
+    sPAPRMachineClass *smc = SPAPR_MACHINE_GET_CLASS(ms);
 
     if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) {
         int node;

@@ -3247,8 +3246,8 @@ static void spapr_machine_device_plug(HotplugHandler *hotplug_dev,
 static void spapr_machine_device_unplug_request(HotplugHandler *hotplug_dev,
                                                 DeviceState *dev, Error **errp)
 {
-    sPAPRMachineState *sms = SPAPR_MACHINE(qdev_get_machine());
-    MachineClass *mc = MACHINE_GET_CLASS(qdev_get_machine());
+    sPAPRMachineState *sms = SPAPR_MACHINE(OBJECT(hotplug_dev));
+    MachineClass *mc = MACHINE_GET_CLASS(sms);
 
     if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) {
         if (spapr_ovec_test(sms->ov5_cas, OV5_HP_EVT)) {

David Gibson

Applied

2017-09-09 06:48 UTC #2 lore raw

Quoted 28 lines · Greg Kurz

Quoted 25 lines · On Wed, 6 Sep 2017 15:43:05 -0300 Daniel Henrique Barboza…
This patch removes the qdev_get_machine() calls that are made in spapr.c in situations where we can get an existing pointer for the MachineState by either passing it as an argument to the function or by using other already available pointers.
The following changes were made:
- spapr_node0_size: static function that is called two times:
at spapr_setup_hpt_and_vrma and ppc_spapr_init. In both cases we can pass an existing MachineState pointer to it.
- spapr_build_fdt: MachineState pointer can be retrieved from the existing sPAPRMachineState pointer.
- spapr_boot_set: the opaque in the first arg is a sPAPRMachineState pointer as we can see inside ppc_spapr_init:
    qemu_register_boot_set(spapr_boot_set, spapr);
We can get a MachineState pointer from it.
- spapr_machine_device_plug and spapr_machine_device_unplug_request: the MachineState, sPAPRMachineState, MachineClass and sPAPRMachineClass pointers can all be retrieved from the HotplugHandler pointer.

Quoted 6 lines

Quoted 2 lines
Signed-off-by Daniel Henrique Barboza <[email protected]>
---
It makes sense for me.
Reviewed-by Greg Kurz <[email protected]>

Applied to ppc-for-2.11.

Quoted 78 lines

Quoted 77 lines

 hw/ppc/spapr.c | 19 +++++++++----------
 1 file changed, 9 insertions(+), 10 deletions(-)

hw/ppc/spapr.c +9 ~~-10~~

index cec441c..6ac3390 100644
@@ -390,10 +390,8 @@ static int spapr_fixup_cpu_dt(void *fdt, sPAPRMachineState *spapr)
     return ret;
 }
 
-static hwaddr spapr_node0_size(void)
+static hwaddr spapr_node0_size(MachineState *machine)
 {
-    MachineState *machine = MACHINE(qdev_get_machine());
-
     if (nb_numa_nodes) {
         int i;
         for (i = 0; i < nb_numa_nodes; ++i) {

@@ -1027,7 +1025,7 @@ static void *spapr_build_fdt(sPAPRMachineState *spapr,
                              hwaddr rtas_addr,
                              hwaddr rtas_size)
 {
-    MachineState *machine = MACHINE(qdev_get_machine());
+    MachineState *machine = MACHINE(spapr);
     MachineClass *mc = MACHINE_GET_CLASS(machine);
     sPAPRMachineClass *smc = SPAPR_MACHINE_GET_CLASS(machine);
     int ret;

@@ -1347,7 +1345,7 @@ void spapr_setup_hpt_and_vrma(sPAPRMachineState *spapr)
     spapr_reallocate_hpt(spapr, hpt_shift, &error_fatal);
 
     if (spapr->vrma_adjust) {
-        spapr->rma_size = kvmppc_rma_size(spapr_node0_size(),
+        spapr->rma_size = kvmppc_rma_size(spapr_node0_size(MACHINE(spapr)),
                                           spapr->htab_shift);
     }
     /* We're setting up a hash table, so that means we're not radix */

@@ -2007,7 +2005,7 @@ static SaveVMHandlers savevm_htab_handlers = {
 static void spapr_boot_set(void *opaque, const char *boot_device,
                            Error **errp)
 {
-    MachineState *machine = MACHINE(qdev_get_machine());
+    MachineState *machine = MACHINE(opaque);
     machine->boot_order = g_strdup(boot_device);
 }

@@ -2154,7 +2152,7 @@ static void ppc_spapr_init(MachineState *machine)
     MemoryRegion *rma_region;
     void *rma = NULL;
     hwaddr rma_alloc_size;
-    hwaddr node0_size = spapr_node0_size();
+    hwaddr node0_size = spapr_node0_size(machine);
     long load_limit, fw_size;
     char *filename;
     Error *resize_hpt_err = NULL;

@@ -3198,7 +3196,8 @@ out:
 static void spapr_machine_device_plug(HotplugHandler *hotplug_dev,
                                       DeviceState *dev, Error **errp)
 {
-    sPAPRMachineClass *smc = SPAPR_MACHINE_GET_CLASS(qdev_get_machine());
+    MachineState *ms = MACHINE(hotplug_dev);
+    sPAPRMachineClass *smc = SPAPR_MACHINE_GET_CLASS(ms);
 
     if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) {
         int node;

@@ -3247,8 +3246,8 @@ static void spapr_machine_device_plug(HotplugHandler *hotplug_dev,
 static void spapr_machine_device_unplug_request(HotplugHandler *hotplug_dev,
                                                 DeviceState *dev, Error **errp)
 {
-    sPAPRMachineState *sms = SPAPR_MACHINE(qdev_get_machine());
-    MachineClass *mc = MACHINE_GET_CLASS(qdev_get_machine());
+    sPAPRMachineState *sms = SPAPR_MACHINE(OBJECT(hotplug_dev));
+    MachineClass *mc = MACHINE_GET_CLASS(sms);
 
     if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) {
         if (spapr_ovec_test(sms->ov5_cas, OV5_HP_EVT)) {

Signature · 4 lines

David Gibson			| I'll have my music baroque, and my code
david AT gibson.dropbear.id.au	| minimalist, thank you.  NOT _the_ _other_
				| _way_ _around_!
http://www.ozlabs.org/~dgibson