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| author | Helge Deller <deller@gmx.de> | 2017-09-21 21:55:01 +0200 |
|---|---|---|
| committer | Helge Deller <deller@gmx.de> | 2017-11-17 15:27:22 +0100 |
| commit | bf7b4c1b3c92f246a535a7c792177041d0442011 (patch) | |
| tree | 1bd779b15d0c77656f99b79a1e8950910daf43cf /arch/parisc/kernel/processor.c | |
| parent | parisc: Fix validity check of pointer size argument in new CAS implementation (diff) | |
| download | linux-bf7b4c1b3c92f246a535a7c792177041d0442011.tar.xz linux-bf7b4c1b3c92f246a535a7c792177041d0442011.zip | |
parisc: Add CPU topology support
Add topology support, including multi-core scheduler support on
PA8800/PA8900 CPUs and enhanced output in /proc/cpuinfo, e.g.
lscpu now reports on a single-socket, dual-core machine:
Architecture: parisc64
CPU(s): 2
On-line CPU(s) list: 0,1
Thread(s) per core: 1
Core(s) per socket: 2
Socket(s): 1
CPU family: PA-RISC 2.0
Model name: PA8800 (Mako)
Signed-off-by: Helge Deller <deller@gmx.de>
Diffstat (limited to 'arch/parisc/kernel/processor.c')
| -rw-r--r-- | arch/parisc/kernel/processor.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/arch/parisc/kernel/processor.c b/arch/parisc/kernel/processor.c index e120d63c1b28..45cc65902fce 100644 --- a/arch/parisc/kernel/processor.c +++ b/arch/parisc/kernel/processor.c @@ -184,6 +184,9 @@ static int __init processor_probe(struct parisc_device *dev) p->txn_addr = txn_addr; /* save CPU IRQ address */ p->cpu_num = cpu_info.cpu_num; p->cpu_loc = cpu_info.cpu_loc; + + store_cpu_topology(cpuid); + #ifdef CONFIG_SMP /* ** FIXME: review if any other initialization is clobbered @@ -325,6 +328,8 @@ int __init init_per_cpu(int cpunum) set_firmware_width(); ret = pdc_coproc_cfg(&coproc_cfg); + store_cpu_topology(cpunum); + if(ret >= 0 && coproc_cfg.ccr_functional) { mtctl(coproc_cfg.ccr_functional, 10); /* 10 == Coprocessor Control Reg */ @@ -388,6 +393,14 @@ show_cpuinfo (struct seq_file *m, void *v) boot_cpu_data.cpu_hz / 1000000, boot_cpu_data.cpu_hz % 1000000 ); +#ifdef CONFIG_PARISC_CPU_TOPOLOGY + seq_printf(m, "physical id\t: %d\n", + topology_physical_package_id(cpu)); + seq_printf(m, "siblings\t: %d\n", + cpumask_weight(topology_core_cpumask(cpu))); + seq_printf(m, "core id\t\t: %d\n", topology_core_id(cpu)); +#endif + seq_printf(m, "capabilities\t:"); if (boot_cpu_data.pdc.capabilities & PDC_MODEL_OS32) seq_puts(m, " os32"); |