aboutsummaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
authorTejun Heo <tj@kernel.org>2013-03-13 14:59:42 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2013-03-13 15:21:47 -0700
commitc8615d3716fe327c2540cf514a34b227dc9b39e8 (patch)
tree2ad264bec1623c7b0cf43998b74654dd627a6e24
parent8e467e855ca5ed2921f290655f96ac40d5dc571c (diff)
idr: deprecate idr_pre_get() and idr_get_new[_above]()
Now that all in-kernel users are converted to ues the new alloc interface, mark the old interface deprecated. We should be able to remove these in a few releases. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--include/linux/idr.h66
-rw-r--r--lib/idr.c41
2 files changed, 55 insertions, 52 deletions
diff --git a/include/linux/idr.h b/include/linux/idr.h
index 8c1f81f823c8..2640c7e99e51 100644
--- a/include/linux/idr.h
+++ b/include/linux/idr.h
@@ -73,8 +73,6 @@ struct idr {
*/
void *idr_find_slowpath(struct idr *idp, int id);
-int idr_pre_get(struct idr *idp, gfp_t gfp_mask);
-int idr_get_new_above(struct idr *idp, void *ptr, int starting_id, int *id);
void idr_preload(gfp_t gfp_mask);
int idr_alloc(struct idr *idp, void *ptr, int start, int end, gfp_t gfp_mask);
int idr_for_each(struct idr *idp,
@@ -120,19 +118,6 @@ static inline void *idr_find(struct idr *idr, int id)
}
/**
- * idr_get_new - allocate new idr entry
- * @idp: idr handle
- * @ptr: pointer you want associated with the id
- * @id: pointer to the allocated handle
- *
- * Simple wrapper around idr_get_new_above() w/ @starting_id of zero.
- */
-static inline int idr_get_new(struct idr *idp, void *ptr, int *id)
-{
- return idr_get_new_above(idp, ptr, 0, id);
-}
-
-/**
* idr_for_each_entry - iterate over an idr's elements of a given type
* @idp: idr handle
* @entry: the type * to use as cursor
@@ -143,7 +128,56 @@ static inline int idr_get_new(struct idr *idp, void *ptr, int *id)
entry != NULL; \
++id, entry = (typeof(entry))idr_get_next((idp), &(id)))
-void __idr_remove_all(struct idr *idp); /* don't use */
+/*
+ * Don't use the following functions. These exist only to suppress
+ * deprecated warnings on EXPORT_SYMBOL()s.
+ */
+int __idr_pre_get(struct idr *idp, gfp_t gfp_mask);
+int __idr_get_new_above(struct idr *idp, void *ptr, int starting_id, int *id);
+void __idr_remove_all(struct idr *idp);
+
+/**
+ * idr_pre_get - reserve resources for idr allocation
+ * @idp: idr handle
+ * @gfp_mask: memory allocation flags
+ *
+ * Part of old alloc interface. This is going away. Use
+ * idr_preload[_end]() and idr_alloc() instead.
+ */
+static inline int __deprecated idr_pre_get(struct idr *idp, gfp_t gfp_mask)
+{
+ return __idr_pre_get(idp, gfp_mask);
+}
+
+/**
+ * idr_get_new_above - allocate new idr entry above or equal to a start id
+ * @idp: idr handle
+ * @ptr: pointer you want associated with the id
+ * @starting_id: id to start search at
+ * @id: pointer to the allocated handle
+ *
+ * Part of old alloc interface. This is going away. Use
+ * idr_preload[_end]() and idr_alloc() instead.
+ */
+static inline int __deprecated idr_get_new_above(struct idr *idp, void *ptr,
+ int starting_id, int *id)
+{
+ return __idr_get_new_above(idp, ptr, starting_id, id);
+}
+
+/**
+ * idr_get_new - allocate new idr entry
+ * @idp: idr handle
+ * @ptr: pointer you want associated with the id
+ * @id: pointer to the allocated handle
+ *
+ * Part of old alloc interface. This is going away. Use
+ * idr_preload[_end]() and idr_alloc() instead.
+ */
+static inline int __deprecated idr_get_new(struct idr *idp, void *ptr, int *id)
+{
+ return __idr_get_new_above(idp, ptr, 0, id);
+}
/**
* idr_remove_all - remove all ids from the given idr tree
diff --git a/lib/idr.c b/lib/idr.c
index 4f82a284c6a2..c6fb8295507b 100644
--- a/lib/idr.c
+++ b/lib/idr.c
@@ -184,20 +184,7 @@ static void idr_mark_full(struct idr_layer **pa, int id)
}
}
-/**
- * idr_pre_get - reserve resources for idr allocation
- * @idp: idr handle
- * @gfp_mask: memory allocation flags
- *
- * This function should be called prior to calling the idr_get_new* functions.
- * It preallocates enough memory to satisfy the worst possible allocation. The
- * caller should pass in GFP_KERNEL if possible. This of course requires that
- * no spinning locks be held.
- *
- * If the system is REALLY out of memory this function returns %0,
- * otherwise %1.
- */
-int idr_pre_get(struct idr *idp, gfp_t gfp_mask)
+int __idr_pre_get(struct idr *idp, gfp_t gfp_mask)
{
while (idp->id_free_cnt < MAX_IDR_FREE) {
struct idr_layer *new;
@@ -208,7 +195,7 @@ int idr_pre_get(struct idr *idp, gfp_t gfp_mask)
}
return 1;
}
-EXPORT_SYMBOL(idr_pre_get);
+EXPORT_SYMBOL(__idr_pre_get);
/**
* sub_alloc - try to allocate an id without growing the tree depth
@@ -375,25 +362,7 @@ static void idr_fill_slot(struct idr *idr, void *ptr, int id,
idr_mark_full(pa, id);
}
-/**
- * idr_get_new_above - allocate new idr entry above or equal to a start id
- * @idp: idr handle
- * @ptr: pointer you want associated with the id
- * @starting_id: id to start search at
- * @id: pointer to the allocated handle
- *
- * This is the allocate id function. It should be called with any
- * required locks.
- *
- * If allocation from IDR's private freelist fails, idr_get_new_above() will
- * return %-EAGAIN. The caller should retry the idr_pre_get() call to refill
- * IDR's preallocation and then retry the idr_get_new_above() call.
- *
- * If the idr is full idr_get_new_above() will return %-ENOSPC.
- *
- * @id returns a value in the range @starting_id ... %0x7fffffff
- */
-int idr_get_new_above(struct idr *idp, void *ptr, int starting_id, int *id)
+int __idr_get_new_above(struct idr *idp, void *ptr, int starting_id, int *id)
{
struct idr_layer *pa[MAX_IDR_LEVEL + 1];
int rv;
@@ -406,7 +375,7 @@ int idr_get_new_above(struct idr *idp, void *ptr, int starting_id, int *id)
*id = rv;
return 0;
}
-EXPORT_SYMBOL(idr_get_new_above);
+EXPORT_SYMBOL(__idr_get_new_above);
/**
* idr_preload - preload for idr_alloc()
@@ -907,7 +876,7 @@ static void free_bitmap(struct ida *ida, struct ida_bitmap *bitmap)
int ida_pre_get(struct ida *ida, gfp_t gfp_mask)
{
/* allocate idr_layers */
- if (!idr_pre_get(&ida->idr, gfp_mask))
+ if (!__idr_pre_get(&ida->idr, gfp_mask))
return 0;
/* allocate free_bitmap */

Privacy Policy