A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-29 19:21:31 -04:00
Code Issues Projects Releases Packages Wiki Activity

of: Make cpu node handling more portable.

Browse source 
Use for_each_node_by_type() to iterate all cpu nodes in the
system.

Provide and overridable function arch_find_n_match_cpu_physical_id,
which sees if the given device node matches 'cpu' and if so sets
'*thread' when non-NULL to the cpu thread number within the core.

The default implementation behaves the same as the existing code.

Add a sparc64 implementation.

Signed-off-by: David S. Miller <[email protected]>
Tested-by: Sudeep KarkadaNagesha <[email protected]>
Signed-off-by: Grant Likely <[email protected]>
This commit is contained in:
David Miller 2013-10-03 17:24:51 -04:00 • committed by Grant Likely
commit d1cb9d1af0
3 changed files with 84 additions and 17 deletions
Download patch file Download diff file Expand all files Collapse all files

45
drivers/of/base.c
View file

@ -280,6 +280,31 @@ static bool __of_find_n_match_cpu_property(struct device_node *cpun,
return false;
}
/*
* arch_find_n_match_cpu_physical_id - See if the given device node is
* for the cpu corresponding to logical cpu 'cpu'. Return true if so,
* else false. If 'thread' is non-NULL, the local thread number within the
* core is returned in it.
*/
bool __weak arch_find_n_match_cpu_physical_id(struct device_node *cpun,
int cpu, unsigned int *thread)
{
/* Check for non-standard "ibm,ppc-interrupt-server#s" property
* for thread ids on PowerPC. If it doesn't exist fallback to
* standard "reg" property.
*/
if (IS_ENABLED(CONFIG_PPC) &&
__of_find_n_match_cpu_property(cpun,
"ibm,ppc-interrupt-server#s",
cpu, thread))
return true;
if (__of_find_n_match_cpu_property(cpun, "reg", cpu, thread))
return true;
return false;
}
/**
* of_get_cpu_node - Get device node associated with the given logical CPU
*
@ -300,24 +325,10 @@ static bool __of_find_n_match_cpu_property(struct device_node *cpun,
*/
struct device_node *of_get_cpu_node(int cpu, unsigned int *thread)
{
struct device_node *cpun, *cpus;
struct device_node *cpun;
cpus = of_find_node_by_path("/cpus");
if (!cpus)
return NULL;
for_each_child_of_node(cpus, cpun) {
if (of_node_cmp(cpun->type, "cpu"))
continue;
/* Check for non-standard "ibm,ppc-interrupt-server#s" property
* for thread ids on PowerPC. If it doesn't exist fallback to
* standard "reg" property.
*/
if (IS_ENABLED(CONFIG_PPC) &&
__of_find_n_match_cpu_property(cpun,
"ibm,ppc-interrupt-server#s", cpu, thread))
return cpun;
if (__of_find_n_match_cpu_property(cpun, "reg", cpu, thread))
for_each_node_by_type(cpun, "cpu") {
if (arch_find_n_match_cpu_physical_id(cpun, cpu, thread))
return cpun;
}
return NULL;