diff options
Diffstat (limited to 'arch/s390/hypfs/hypfs_diag0c.c')
| -rw-r--r-- | arch/s390/hypfs/hypfs_diag0c.c | 44 |
1 files changed, 16 insertions, 28 deletions
diff --git a/arch/s390/hypfs/hypfs_diag0c.c b/arch/s390/hypfs/hypfs_diag0c.c index 0f1927cbba31..61220e717af0 100644 --- a/arch/s390/hypfs/hypfs_diag0c.c +++ b/arch/s390/hypfs/hypfs_diag0c.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Hypervisor filesystem for Linux on s390 * @@ -8,6 +9,7 @@ #include <linux/slab.h> #include <linux/cpu.h> +#include <asm/machine.h> #include <asm/diag.h> #include <asm/hypfs.h> #include "hypfs.h" @@ -15,26 +17,11 @@ #define DBFS_D0C_HDR_VERSION 0 /* - * Execute diagnose 0c in 31 bit mode - */ -static void diag0c(struct hypfs_diag0c_entry *entry) -{ - diag_stat_inc(DIAG_STAT_X00C); - asm volatile ( - " sam31\n" - " diag %0,%0,0x0c\n" - " sam64\n" - : /* no output register */ - : "a" (entry) - : "memory"); -} - -/* * Get hypfs_diag0c_entry from CPU vector and store diag0c data */ static void diag0c_fn(void *data) { - diag0c(((void **) data)[smp_processor_id()]); + diag0c(((void **)data)[smp_processor_id()]); } /* @@ -46,14 +33,14 @@ static void *diag0c_store(unsigned int *count) unsigned int cpu_count, cpu, i; void **cpu_vec; - get_online_cpus(); + cpus_read_lock(); cpu_count = num_online_cpus(); - cpu_vec = kmalloc(sizeof(*cpu_vec) * num_possible_cpus(), GFP_KERNEL); + cpu_vec = kmalloc_array(num_possible_cpus(), sizeof(*cpu_vec), + GFP_KERNEL); if (!cpu_vec) - goto fail_put_online_cpus; + goto fail_unlock_cpus; /* Note: Diag 0c needs 8 byte alignment and real storage */ - diag0c_data = kzalloc(sizeof(struct hypfs_diag0c_hdr) + - cpu_count * sizeof(struct hypfs_diag0c_entry), + diag0c_data = kzalloc(struct_size(diag0c_data, entry, cpu_count), GFP_KERNEL | GFP_DMA); if (!diag0c_data) goto fail_kfree_cpu_vec; @@ -67,13 +54,13 @@ static void *diag0c_store(unsigned int *count) on_each_cpu(diag0c_fn, cpu_vec, 1); *count = cpu_count; kfree(cpu_vec); - put_online_cpus(); + cpus_read_unlock(); return diag0c_data; fail_kfree_cpu_vec: kfree(cpu_vec); -fail_put_online_cpus: - put_online_cpus(); +fail_unlock_cpus: + cpus_read_unlock(); return ERR_PTR(-ENOMEM); } @@ -97,7 +84,7 @@ static int dbfs_diag0c_create(void **data, void **data_free_ptr, size_t *size) if (IS_ERR(diag0c_data)) return PTR_ERR(diag0c_data); memset(&diag0c_data->hdr, 0, sizeof(diag0c_data->hdr)); - get_tod_clock_ext(diag0c_data->hdr.tod_ext); + store_tod_clock_ext((union tod_clock *)diag0c_data->hdr.tod_ext); diag0c_data->hdr.len = count * sizeof(struct hypfs_diag0c_entry); diag0c_data->hdr.version = DBFS_D0C_HDR_VERSION; diag0c_data->hdr.count = count; @@ -121,9 +108,10 @@ static struct hypfs_dbfs_file dbfs_file_0c = { */ int __init hypfs_diag0c_init(void) { - if (!MACHINE_IS_VM) + if (!machine_is_vm()) return 0; - return hypfs_dbfs_create_file(&dbfs_file_0c); + hypfs_dbfs_create_file(&dbfs_file_0c); + return 0; } /* @@ -131,7 +119,7 @@ int __init hypfs_diag0c_init(void) */ void hypfs_diag0c_exit(void) { - if (!MACHINE_IS_VM) + if (!machine_is_vm()) return; hypfs_dbfs_remove_file(&dbfs_file_0c); } |