cpu/topology: Export die_id

Export die_id in cpu topology, for the benefit of hardware that has multiple-die/package.

Len Brown committed 7 years ago

Commit 0e344d81 parent 14d96d63 files · +19 −3Browse files

Unified · Split

3 files

@@ -12,6 +12,12 @@ physical_package_id: · 11 unmodified lines
12	12	socket number, but the actual value is architecture and platform
13	13	dependent.
14	14
	15	+die_id:
	16	+
	17	+ the CPU die ID of cpuX. Typically it is the hardware platform's
	18	+ identifier (rather than the kernel's). The actual value is
	19	+ architecture and platform dependent.
	20	+
15	21	core_id:
16	22
17	23	the CPU core ID of cpuX. Typically it is the hardware platform's
@@ -81,6 +87,7 @@ For an architecture to support this feature, it must define some of · 63 unmodified lines
81	87	these macros in include/asm-XXX/topology.h::
82	88
83	89	#define topology_physical_package_id(cpu)
	90	+ #define topology_die_id(cpu)
84	91	#define topology_core_id(cpu)
85	92	#define topology_book_id(cpu)
86	93	#define topology_drawer_id(cpu)
@@ -99,9 +106,11 @@ provides default definitions for any of the above macros that are · 12 unmodified lines
99	106	not defined by include/asm-XXX/topology.h:
100	107
101	108	1) topology_physical_package_id: -1
102		−2) topology_core_id: 0
103		−3) topology_sibling_cpumask: just the given CPU
104		−4) topology_core_cpumask: just the given CPU
	109	+2) topology_die_id: -1
	110	+3) topology_core_id: 0
	111	+4) topology_sibling_cpumask: just the given CPU
	112	+5) topology_core_cpumask: just the given CPU
	113	+6) topology_die_cpumask: just the given CPU
105	114
106	115	For architectures that don't support books (CONFIG_SCHED_BOOK) there are no
107	116	default definitions for topology_book_id() and topology_book_cpumask().

@@ -43,6 +43,9 @@ static ssize_t name##_list_show(struct device *dev, \ · 42 unmodified lines
43	43	define_id_show_func(physical_package_id);
44	44	static DEVICE_ATTR_RO(physical_package_id);
45	45
	46	+define_id_show_func(die_id);
	47	+static DEVICE_ATTR_RO(die_id);
	48	+
46	49	define_id_show_func(core_id);
47	50	static DEVICE_ATTR_RO(core_id);
48	51
@@ -72,6 +75,7 @@ static DEVICE_ATTR_RO(drawer_siblings_list); · 23 unmodified lines
72	75
73	76	static struct attribute *default_attrs[] = {
74	77	&dev_attr_physical_package_id.attr,
	78	+ &dev_attr_die_id.attr,
75	79	&dev_attr_core_id.attr,
76	80	&dev_attr_thread_siblings.attr,
77	81	&dev_attr_thread_siblings_list.attr,

@@ -184,6 +184,9 @@ static inline int cpu_to_mem(int cpu) · 183 unmodified lines
184	184	#ifndef topology_physical_package_id
185	185	#define topology_physical_package_id(cpu) ((void)(cpu), -1)
186	186	#endif
	187	+#ifndef topology_die_id
	188	+#define topology_die_id(cpu) ((void)(cpu), -1)
	189	+#endif
187	190	#ifndef topology_core_id
188	191	#define topology_core_id(cpu) ((void)(cpu), 0)
189	192	#endif

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