LU-15420 libcfs: replace deprecated CPU-hotplug functions

Kernel 5.15 commit 8c854303ce0e38e5bbedd725ff39da7e235865d8
removed deprecated CPU-hotplug functions get_online_cpus()
and put_online_cpus(). They map directly to cpus_read_lock()
and cpus_read_unlock().

Change-Id: I09d489cd3ca9a575b20ea25f24210702fbfdd725
Signed-off-by: Jian Yu <yujian@whamcloud.com>
Reviewed-on: https://review.whamcloud.com/46085
Tested-by: jenkins <devops@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: James Simmons <jsimmons@infradead.org>
Tested-by: Maloo <maloo@whamcloud.com>

diff --git a/libcfs/libcfs/libcfs_cpu.c b/libcfs/libcfs/libcfs_cpu.c
index 6c4fba4..2616fc9 100644 (file)
--- a/libcfs/libcfs/libcfs_cpu.c
+++ b/libcfs/libcfs/libcfs_cpu.c
@@ -1222,7 +1222,7 @@ int cfs_cpu_init(void)
 #endif /* !HAVE_HOTPLUG_STATE_MACHINE */
 #endif /* CONFIG_HOTPLUG_CPU */
 
-       get_online_cpus();
+       cpus_read_lock();
        if (*cpu_pattern) {
                cfs_cpt_tab = cfs_cpt_table_create_pattern(cpu_pattern);
                if (IS_ERR(cfs_cpt_tab)) {
@@ -1242,7 +1242,7 @@ int cfs_cpu_init(void)
                }
        }
 
-       put_online_cpus();
+       cpus_read_unlock();
 
        LCONSOLE(0, "HW NUMA nodes: %d, HW CPU cores: %d, npartitions: %d\n",
                 num_online_nodes(), num_online_cpus(),
@@ -1250,7 +1250,7 @@ int cfs_cpu_init(void)
        return 0;
 
 failed_alloc_table:
-       put_online_cpus();
+       cpus_read_unlock();
 
        if (!IS_ERR_OR_NULL(cfs_cpt_tab))
                cfs_cpt_table_free(cfs_cpt_tab);