staging/lustre/ptlrpc: Do not use deprecated cpus_* functions

As per Rusty Russel, cpus_* functions are deprecated.
When mixing cpumask_copy with cpus_weight, they operate on different
sized masks if CPUMASK_OFFSTACK is enabled, causing an
immediate assertion failure.
Copying of cpumasks by assignment is also not allowed now.

Additionally, in ptlrpc/service.c avoid the cpumask copies,
since we only use it to check how many siblings are there for
core #0 and nothing else.

Reported-by: Tyson Whitehead <twhitehead@gmail.com>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/lustre/lustre/ptlrpc/ptlrpcd.c b/drivers/staging/lustre/lustre/ptlrpc/ptlrpcd.c
index 8f7be84..0c178ec 100644 (file)
--- a/drivers/staging/lustre/lustre/ptlrpc/ptlrpcd.c
+++ b/drivers/staging/lustre/lustre/ptlrpc/ptlrpcd.c
@@ -511,10 +511,10 @@ static int ptlrpcd_bind(int index, int max)
 #if defined(CONFIG_NUMA)
        {
                int i;
-               mask = *cpumask_of_node(cpu_to_node(index));
+               cpumask_copy(&mask, cpumask_of_node(cpu_to_node(index)));
                for (i = max; i < num_online_cpus(); i++)
-                       cpu_clear(i, mask);
-               pc->pc_npartners = cpus_weight(mask) - 1;
+                       cpumask_clear_cpu(i, &mask);
+               pc->pc_npartners = cpumask_weight(&mask) - 1;
                set_bit(LIOD_BIND, &pc->pc_flags);
        }
 #else
@@ -554,7 +554,7 @@ static int ptlrpcd_bind(int index, int max)
                                 * that are already initialized
                                 */
                                for (pidx = 0, i = 0; i < index; i++) {
-                                       if (cpu_isset(i, mask)) {
+                                       if (cpumask_test_cpu(i, &mask)) {
                                                ppc = &ptlrpcds->pd_threads[i];
                                                pc->pc_partners[pidx++] = ppc;
                                                ppc->pc_partners[ppc->

diff --git a/drivers/staging/lustre/lustre/ptlrpc/service.c b/drivers/staging/lustre/lustre/ptlrpc/service.c
index 635b12b..8e61421 100644 (file)
--- a/drivers/staging/lustre/lustre/ptlrpc/service.c
+++ b/drivers/staging/lustre/lustre/ptlrpc/service.c
@@ -543,7 +543,6 @@ ptlrpc_server_nthreads_check(struct ptlrpc_service *svc,
        if (tc->tc_thr_factor != 0) {
                int       factor = tc->tc_thr_factor;
                const int fade = 4;
-               cpumask_t mask;
 
                /*
                 * User wants to increase number of threads with for
@@ -557,8 +556,8 @@ ptlrpc_server_nthreads_check(struct ptlrpc_service *svc,
                 * have too many threads no matter how many cores/HTs
                 * there are.
                 */
-               cpumask_copy(&mask, topology_thread_cpumask(0));
-               if (cpus_weight(mask) > 1) { /* weight is # of HTs */
+               /* weight is # of HTs */
+               if (cpumask_weight(topology_thread_cpumask(0)) > 1) {
                        /* depress thread factor for hyper-thread */
                        factor = factor - (factor >> 1) + (factor >> 3);
                }
@@ -2752,7 +2751,6 @@ int ptlrpc_start_thread(struct ptlrpc_service_part *svcpt, int wait)
 
 int ptlrpc_hr_init(void)
 {
-       cpumask_t                       mask;
        struct ptlrpc_hr_partition      *hrp;
        struct ptlrpc_hr_thread         *hrt;
        int                             rc;
@@ -2770,8 +2768,7 @@ int ptlrpc_hr_init(void)
 
        init_waitqueue_head(&ptlrpc_hr.hr_waitq);
 
-       cpumask_copy(&mask, topology_thread_cpumask(0));
-       weight = cpus_weight(mask);
+       weight = cpumask_weight(topology_thread_cpumask(0));
 
        cfs_percpt_for_each(hrp, i, ptlrpc_hr.hr_partitions) {
                hrp->hrp_cpt = i;