From: Danilo Krummrich Date: Fri, 1 Jul 2022 19:02:25 +0000 (+0200) Subject: drm/v3d: use idr_init_base() to initialize v3d_priv->perfmon.idr X-Git-Tag: microblaze-v6.2~40^2~22^2~71 X-Git-Url: http://git.monstr.eu/?a=commitdiff_plain;h=604bda63bf939d6f5afef0b20d7ddee3abd27852;p=linux-2.6-microblaze.git drm/v3d: use idr_init_base() to initialize v3d_priv->perfmon.idr idr_init_base(), implemented by commit 6ce711f27500 ("idr: Make 1-based IDRs more efficient"), let us set an arbitrary base other than idr_init(), which uses base 0. Since, for this IDR, no ID < 1 is ever requested/allocated, using idr_init_base(&idr, 1) avoids unnecessary tree walks. Signed-off-by: Danilo Krummrich Signed-off-by: Maxime Ripard Link: https://lore.kernel.org/r/20220701190227.284783-1-dakr@redhat.com --- diff --git a/drivers/gpu/drm/v3d/v3d_perfmon.c b/drivers/gpu/drm/v3d/v3d_perfmon.c index f6a88abccc7d..48aaaa972c49 100644 --- a/drivers/gpu/drm/v3d/v3d_perfmon.c +++ b/drivers/gpu/drm/v3d/v3d_perfmon.c @@ -95,7 +95,7 @@ struct v3d_perfmon *v3d_perfmon_find(struct v3d_file_priv *v3d_priv, int id) void v3d_perfmon_open_file(struct v3d_file_priv *v3d_priv) { mutex_init(&v3d_priv->perfmon.lock); - idr_init(&v3d_priv->perfmon.idr); + idr_init_base(&v3d_priv->perfmon.idr, 1); } static int v3d_perfmon_idr_del(int id, void *elem, void *data)