diff options
Diffstat (limited to 'arch/tile/kernel/setup.c')
| -rw-r--r-- | arch/tile/kernel/setup.c | 25 |
1 files changed, 24 insertions, 1 deletions
diff --git a/arch/tile/kernel/setup.c b/arch/tile/kernel/setup.c index f1f579914952..6873f006f7d0 100644 --- a/arch/tile/kernel/setup.c +++ b/arch/tile/kernel/setup.c @@ -32,6 +32,7 @@ #include <linux/hugetlb.h> #include <linux/start_kernel.h> #include <linux/screen_info.h> +#include <linux/tick.h> #include <asm/setup.h> #include <asm/sections.h> #include <asm/cacheflush.h> @@ -773,7 +774,7 @@ static void __init zone_sizes_init(void) * though, there'll be no lowmem, so we just alloc_bootmem * the memmap. There will be no percpu memory either. */ - if (i != 0 && cpu_isset(i, isolnodes)) { + if (i != 0 && cpumask_test_cpu(i, &isolnodes)) { node_memmap_pfn[i] = alloc_bootmem_pfn(0, memmap_size, 0); BUG_ON(node_percpu[i] != 0); @@ -1390,6 +1391,28 @@ static int __init dataplane(char *str) early_param("dataplane", dataplane); +#ifdef CONFIG_NO_HZ_FULL +/* Warn if hypervisor shared cpus are marked as nohz_full. */ +static int __init check_nohz_full_cpus(void) +{ + struct cpumask shared; + int cpu; + + if (hv_inquire_tiles(HV_INQ_TILES_SHARED, + (HV_VirtAddr) shared.bits, sizeof(shared)) < 0) { + pr_warn("WARNING: No support for inquiring hv shared tiles\n"); + return 0; + } + for_each_cpu(cpu, &shared) { + if (tick_nohz_full_cpu(cpu)) + pr_warn("WARNING: nohz_full cpu %d receives hypervisor interrupts!\n", + cpu); + } + return 0; +} +arch_initcall(check_nohz_full_cpus); +#endif + #ifdef CONFIG_CMDLINE_BOOL static char __initdata builtin_cmdline[COMMAND_LINE_SIZE] = CONFIG_CMDLINE; #endif |