diff options
| author | Len Brown <len.brown@intel.com> | 2019-05-13 20:58:46 +0300 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2019-05-23 11:08:30 +0300 |
| commit | 14d96d6c06b5d8116b8d52c9c5530f5528ef1e61 (patch) | |
| tree | 0cb747fc84cfc5431fd6e3b1f8c5f358148a8057 /arch/x86/include/asm/topology.h | |
| parent | 7745f03eb39587dd15a1fb26e6223678b8e906d2 (diff) | |
| download | linux-14d96d6c06b5d8116b8d52c9c5530f5528ef1e61.tar.xz | |
x86/topology: Create topology_max_die_per_package()
topology_max_packages() is available to size resources to cover all
packages in the system.
But now multi-die/package systems are coming up, and some resources are
per-die.
Create topology_max_die_per_package(), for detecting multi-die/package
systems, and sizing any per-die resources.
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/e6eaf384571ae52ac7d0ca41510b7fb7d2fda0e4.1557769318.git.len.brown@intel.com
Diffstat (limited to 'arch/x86/include/asm/topology.h')
| -rw-r--r-- | arch/x86/include/asm/topology.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/x86/include/asm/topology.h b/arch/x86/include/asm/topology.h index 453cf38a1c33..e0232f7042c3 100644 --- a/arch/x86/include/asm/topology.h +++ b/arch/x86/include/asm/topology.h @@ -115,6 +115,13 @@ extern const struct cpumask *cpu_coregroup_mask(int cpu); extern unsigned int __max_logical_packages; #define topology_max_packages() (__max_logical_packages) +extern unsigned int __max_die_per_package; + +static inline int topology_max_die_per_package(void) +{ + return __max_die_per_package; +} + extern int __max_smt_threads; static inline int topology_max_smt_threads(void) @@ -131,6 +138,9 @@ bool topology_smt_supported(void); static inline int topology_update_package_map(unsigned int apicid, unsigned int cpu) { return 0; } static inline int topology_phys_to_logical_pkg(unsigned int pkg) { return 0; } +static inline int topology_phys_to_logical_die(unsigned int die, + unsigned int cpu) { return 0; } +static inline int topology_max_die_per_package(void) { return 1; } static inline int topology_max_smt_threads(void) { return 1; } static inline bool topology_is_primary_thread(unsigned int cpu) { return true; } static inline bool topology_smt_supported(void) { return false; } |