From 05f7a7d6a7d23a877063857cf2df1dffec5a96dc Mon Sep 17 00:00:00 2001 From: Andreas Gruenbacher Date: Mon, 8 Aug 2011 23:36:56 +0200 Subject: idr: Add new function idr_is_empty() Signed-off-by: Andreas Gruenbacher Signed-off-by: Philipp Reisner --- include/linux/idr.h | 1 + lib/idr.c | 10 ++++++++++ 2 files changed, 11 insertions(+) diff --git a/include/linux/idr.h b/include/linux/idr.h index 871a213a8477..9c95d210458b 100644 --- a/include/linux/idr.h +++ b/include/linux/idr.h @@ -85,6 +85,7 @@ void idr_remove(struct idr *idp, int id); void idr_free(struct idr *idp, int id); void idr_destroy(struct idr *idp); void idr_init(struct idr *idp); +bool idr_is_empty(struct idr *idp); /** * idr_preload_end - end preload section started with idr_preload() diff --git a/lib/idr.c b/lib/idr.c index bfe4db4e165f..1ba4956bfbff 100644 --- a/lib/idr.c +++ b/lib/idr.c @@ -869,6 +869,16 @@ void idr_init(struct idr *idp) } EXPORT_SYMBOL(idr_init); +static int idr_has_entry(int id, void *p, void *data) +{ + return 1; +} + +bool idr_is_empty(struct idr *idp) +{ + return !idr_for_each(idp, idr_has_entry, NULL); +} +EXPORT_SYMBOL(idr_is_empty); /** * DOC: IDA description -- cgit v1.2.3