fix: sysconf(_SC_NPROCESSORS_CONF) can be less than max cpu id

[urcu.git] / src / rculfhash.c

diff --git a/src/rculfhash.c b/src/rculfhash.c
index 872d6ff1dea4d1a8533f5bc0c3ba70fe0a438db3..7c0b9fb8081fbfd4db089def5665d01d7b6cda90 100644 (file)
--- a/src/rculfhash.c
+++ b/src/rculfhash.c
@@ -281,6 +281,7 @@
 #include "workqueue.h"
 #include "urcu-die.h"
 #include "urcu-utils.h"
+#include "compat-smp.h"
 
 /*
  * Split-counters lazily update the global counter each 1024
@@ -645,12 +646,11 @@ static long nr_cpus_mask = -1;
 static long split_count_mask = -1;
 static int split_count_order = -1;
 
-#if defined(HAVE_SYSCONF)
 static void ht_init_nr_cpus_mask(void)
 {
        long maxcpus;
 
-       maxcpus = sysconf(_SC_NPROCESSORS_CONF);
+       maxcpus = get_possible_cpus_array_len();
        if (maxcpus <= 0) {
                nr_cpus_mask = -2;
                return;
@@ -662,12 +662,6 @@ static void ht_init_nr_cpus_mask(void)
        maxcpus = 1UL << cds_lfht_get_count_order_ulong(maxcpus);
        nr_cpus_mask = maxcpus - 1;
 }
-#else /* #if defined(HAVE_SYSCONF) */
-static void ht_init_nr_cpus_mask(void)
-{
-       nr_cpus_mask = -2;
-}
-#endif /* #else #if defined(HAVE_SYSCONF) */
 
 static
 void alloc_split_items_count(struct cds_lfht *ht)