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authorMichael Bestas <mkbestas@lineageos.org>2020-06-04 00:49:19 +0300
committerMichael Bestas <mkbestas@lineageos.org>2020-06-04 00:49:19 +0300
commit08e780103611fb2be36c17ff80de6cb54c910dd0 (patch)
tree8bd63552a71f699da64faee819fc9c56501be6f2 /lib/cpumask.c
parent978414b66805b23c93560db9cdacd4fd83f8cc52 (diff)
parent60fca757270659c627384fcfe7219d2b85f1459c (diff)
Merge branch 'android-4.4-p' of https://android.googlesource.com/kernel/common into lineage-17.1-caf-msm8998
This brings LA.UM.8.4.r1-05500-8x98.0 up to date with https://android.googlesource.com/kernel/common/ android-4.4-p at commit: 60fca75727065 Merge 4.4.226 into android-4.4-p Conflicts: drivers/base/firmware_class.c drivers/gpu/drm/msm/msm_gem.c drivers/mmc/host/sdhci.c drivers/net/wireless/ath/ath10k/core.c kernel/trace/blktrace.c net/socket.c sound/core/rawmidi.c sound/usb/mixer.c Change-Id: Ic8599e865656da72a9405c45f27091ec1ddc168c
Diffstat (limited to 'lib/cpumask.c')
-rw-r--r--lib/cpumask.c32
1 files changed, 32 insertions, 0 deletions
diff --git a/lib/cpumask.c b/lib/cpumask.c
index 5a70f6196f57..24f06e7abf92 100644
--- a/lib/cpumask.c
+++ b/lib/cpumask.c
@@ -42,6 +42,38 @@ int cpumask_any_but(const struct cpumask *mask, unsigned int cpu)
return i;
}
+/**
+ * cpumask_next_wrap - helper to implement for_each_cpu_wrap
+ * @n: the cpu prior to the place to search
+ * @mask: the cpumask pointer
+ * @start: the start point of the iteration
+ * @wrap: assume @n crossing @start terminates the iteration
+ *
+ * Returns >= nr_cpu_ids on completion
+ *
+ * Note: the @wrap argument is required for the start condition when
+ * we cannot assume @start is set in @mask.
+ */
+int cpumask_next_wrap(int n, const struct cpumask *mask, int start, bool wrap)
+{
+ int next;
+
+again:
+ next = cpumask_next(n, mask);
+
+ if (wrap && n < start && next >= start) {
+ return nr_cpumask_bits;
+
+ } else if (next >= nr_cpumask_bits) {
+ wrap = true;
+ n = -1;
+ goto again;
+ }
+
+ return next;
+}
+EXPORT_SYMBOL(cpumask_next_wrap);
+
/* These are not inline because of header tangles. */
#ifdef CONFIG_CPUMASK_OFFSTACK
/**