mm/hotplug: invalid PFNs from pfn_to_online_page()

[mirror_ubuntu-bionic-kernel.git] / include / linux / cpumask.h

diff --git a/include/linux/cpumask.h b/include/linux/cpumask.h
index 8d3125c493b2322478ccca401d932797dec34850..09b8d8aaa35f4839ea3e36fa57132416cc7c83f5 100644 (file)
--- a/include/linux/cpumask.h
+++ b/include/linux/cpumask.h
@@ -131,6 +131,11 @@ static inline unsigned int cpumask_first(const struct cpumask *srcp)
        return 0;
 }
 
+static inline unsigned int cpumask_last(const struct cpumask *srcp)
+{
+       return 0;
+}
+
 /* Valid inputs for n are -1 and 0. */
 static inline unsigned int cpumask_next(int n, const struct cpumask *srcp)
 {
@@ -165,6 +170,8 @@ static inline unsigned int cpumask_local_spread(unsigned int i, int node)
        for ((cpu) = 0; (cpu) < 1; (cpu)++, (void)mask)
 #define for_each_cpu_not(cpu, mask)            \
        for ((cpu) = 0; (cpu) < 1; (cpu)++, (void)mask)
+#define for_each_cpu_wrap(cpu, mask, start)    \
+       for ((cpu) = 0; (cpu) < 1; (cpu)++, (void)mask, (void)(start))
 #define for_each_cpu_and(cpu, mask, and)       \
        for ((cpu) = 0; (cpu) < 1; (cpu)++, (void)mask, (void)and)
 #else
@@ -179,6 +186,17 @@ static inline unsigned int cpumask_first(const struct cpumask *srcp)
        return find_first_bit(cpumask_bits(srcp), nr_cpumask_bits);
 }
 
+/**
+ * cpumask_last - get the last CPU in a cpumask
+ * @srcp:      - the cpumask pointer
+ *
+ * Returns     >= nr_cpumask_bits if no CPUs set.
+ */
+static inline unsigned int cpumask_last(const struct cpumask *srcp)
+{
+       return find_last_bit(cpumask_bits(srcp), nr_cpumask_bits);
+}
+
 unsigned int cpumask_next(int n, const struct cpumask *srcp);
 
 /**