xen/ACPI: Switch to bitmap_zalloc()

Switch to bitmap_zalloc() to show clearly what we are allocating.
Besides that it returns pointer of bitmap type instead of opaque void *.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Juergen Gross <jgross@suse.com>

diff --git a/drivers/xen/xen-acpi-processor.c b/drivers/xen/xen-acpi-processor.c
index fbb9137c7d0287b652cf9c429db0ca593713032b..98e35644fda709411e8feaab8c9371d0224d8669 100644 (file)
--- a/drivers/xen/xen-acpi-processor.c
+++ b/drivers/xen/xen-acpi-processor.c
@@ -410,21 +410,21 @@ static int check_acpi_ids(struct acpi_processor *pr_backup)
        /* All online CPUs have been processed at this stage. Now verify
         * whether in fact "online CPUs" == physical CPUs.
         */
-       acpi_id_present = kcalloc(BITS_TO_LONGS(nr_acpi_bits), sizeof(unsigned long), GFP_KERNEL);
+       acpi_id_present = bitmap_zalloc(nr_acpi_bits, GFP_KERNEL);
        if (!acpi_id_present)
                return -ENOMEM;
 
-       acpi_id_cst_present = kcalloc(BITS_TO_LONGS(nr_acpi_bits), sizeof(unsigned long), GFP_KERNEL);
+       acpi_id_cst_present = bitmap_zalloc(nr_acpi_bits, GFP_KERNEL);
        if (!acpi_id_cst_present) {
-               kfree(acpi_id_present);
+               bitmap_free(acpi_id_present);
                return -ENOMEM;
        }
 
        acpi_psd = kcalloc(nr_acpi_bits, sizeof(struct acpi_psd_package),
                           GFP_KERNEL);
        if (!acpi_psd) {
-               kfree(acpi_id_present);
-               kfree(acpi_id_cst_present);
+               bitmap_free(acpi_id_present);
+               bitmap_free(acpi_id_cst_present);
                return -ENOMEM;
        }
 
@@ -533,14 +533,14 @@ static int __init xen_acpi_processor_init(void)
                return -ENODEV;
 
        nr_acpi_bits = get_max_acpi_id() + 1;
-       acpi_ids_done = kcalloc(BITS_TO_LONGS(nr_acpi_bits), sizeof(unsigned long), GFP_KERNEL);
+       acpi_ids_done = bitmap_zalloc(nr_acpi_bits, GFP_KERNEL);
        if (!acpi_ids_done)
                return -ENOMEM;
 
        acpi_perf_data = alloc_percpu(struct acpi_processor_performance);
        if (!acpi_perf_data) {
                pr_debug("Memory allocation error for acpi_perf_data\n");
-               kfree(acpi_ids_done);
+               bitmap_free(acpi_ids_done);
                return -ENOMEM;
        }
        for_each_possible_cpu(i) {
@@ -584,7 +584,7 @@ err_unregister:
 err_out:
        /* Freeing a NULL pointer is OK: alloc_percpu zeroes. */
        free_acpi_perf_data();
-       kfree(acpi_ids_done);
+       bitmap_free(acpi_ids_done);
        return rc;
 }
 static void __exit xen_acpi_processor_exit(void)
@@ -592,9 +592,9 @@ static void __exit xen_acpi_processor_exit(void)
        int i;
 
        unregister_syscore_ops(&xap_syscore_ops);
-       kfree(acpi_ids_done);
-       kfree(acpi_id_present);
-       kfree(acpi_id_cst_present);
+       bitmap_free(acpi_ids_done);
+       bitmap_free(acpi_id_present);
+       bitmap_free(acpi_id_cst_present);
        kfree(acpi_psd);
        for_each_possible_cpu(i)
                acpi_processor_unregister_performance(i);