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authorMadalin Bucur <madalin.bucur@nxp.com>2016-11-15 11:41:01 +0300
committerDavid S. Miller <davem@davemloft.net>2016-11-16 06:34:25 +0300
commitff86aae3b4112b85d2231c23bccbc49589df1c06 (patch)
treecb0fcad962ce162dc6b0326889f0c36646aa3a0c /include/linux/device.h
parent319b0534b9588124cdc7128e121f3f85daaab556 (diff)
downloadlinux-ff86aae3b4112b85d2231c23bccbc49589df1c06.tar.xz
devres: add devm_alloc_percpu()
Introduce managed counterparts for alloc_percpu() and free_percpu(). Add devm_alloc_percpu() and devm_free_percpu() into the managed interfaces list. Signed-off-by: Madalin Bucur <madalin.bucur@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/device.h')
-rw-r--r--include/linux/device.h19
1 files changed, 19 insertions, 0 deletions
diff --git a/include/linux/device.h b/include/linux/device.h
index bc41e87a969b..a00105cf795e 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -698,6 +698,25 @@ static inline int devm_add_action_or_reset(struct device *dev,
return ret;
}
+/**
+ * devm_alloc_percpu - Resource-managed alloc_percpu
+ * @dev: Device to allocate per-cpu memory for
+ * @type: Type to allocate per-cpu memory for
+ *
+ * Managed alloc_percpu. Per-cpu memory allocated with this function is
+ * automatically freed on driver detach.
+ *
+ * RETURNS:
+ * Pointer to allocated memory on success, NULL on failure.
+ */
+#define devm_alloc_percpu(dev, type) \
+ ((typeof(type) __percpu *)__devm_alloc_percpu((dev), sizeof(type), \
+ __alignof__(type)))
+
+void __percpu *__devm_alloc_percpu(struct device *dev, size_t size,
+ size_t align);
+void devm_free_percpu(struct device *dev, void __percpu *pdata);
+
struct device_dma_parameters {
/*
* a low level driver may set these to teach IOMMU code about