diff --git a/libavfilter/af_amix.c b/libavfilter/af_amix.c
index 75736e6544..8cecdafd7e 100644
--- a/libavfilter/af_amix.c
+++ b/libavfilter/af_amix.c
@@ -28,6 +28,7 @@
  * output.
  */
 
+#include "libavutil/attributes.h"
 #include "libavutil/audio_fifo.h"
 #include "libavutil/avassert.h"
 #include "libavutil/avstring.h"
@@ -483,7 +484,7 @@ fail:
     return ret;
 }
 
-static int init(AVFilterContext *ctx)
+static av_cold int init(AVFilterContext *ctx)
 {
     MixContext *s = ctx->priv;
     int i;
@@ -505,7 +506,7 @@ static int init(AVFilterContext *ctx)
     return 0;
 }
 
-static void uninit(AVFilterContext *ctx)
+static av_cold void uninit(AVFilterContext *ctx)
 {
     int i;
     MixContext *s = ctx->priv;
diff --git a/libavfilter/af_ashowinfo.c b/libavfilter/af_ashowinfo.c
index f53584ec56..7770c276c9 100644
--- a/libavfilter/af_ashowinfo.c
+++ b/libavfilter/af_ashowinfo.c
@@ -27,6 +27,7 @@
 #include <stddef.h>
 
 #include "libavutil/adler32.h"
+#include "libavutil/attributes.h"
 #include "libavutil/channel_layout.h"
 #include "libavutil/common.h"
 #include "libavutil/mem.h"
@@ -49,7 +50,7 @@ typedef struct AShowInfoContext {
     uint64_t frame;
 } AShowInfoContext;
 
-static void uninit(AVFilterContext *ctx)
+static av_cold void uninit(AVFilterContext *ctx)
 {
     AShowInfoContext *s = ctx->priv;
     av_freep(&s->plane_checksums);
diff --git a/libavfilter/af_asyncts.c b/libavfilter/af_asyncts.c
index 13c5a915c4..43dbab2bbf 100644
--- a/libavfilter/af_asyncts.c
+++ b/libavfilter/af_asyncts.c
@@ -17,6 +17,7 @@
  */
 
 #include "libavresample/avresample.h"
+#include "libavutil/attributes.h"
 #include "libavutil/audio_fifo.h"
 #include "libavutil/common.h"
 #include "libavutil/mathematics.h"
@@ -60,7 +61,7 @@ static const AVOption asyncts_options[] = {
 
 AVFILTER_DEFINE_CLASS(asyncts);
 
-static int init(AVFilterContext *ctx)
+static av_cold int init(AVFilterContext *ctx)
 {
     ASyncContext *s = ctx->priv;
 
@@ -70,7 +71,7 @@ static int init(AVFilterContext *ctx)
     return 0;
 }
 
-static void uninit(AVFilterContext *ctx)
+static av_cold void uninit(AVFilterContext *ctx)
 {
     ASyncContext *s = ctx->priv;
 
diff --git a/libavfilter/af_channelsplit.c b/libavfilter/af_channelsplit.c
index c14c676732..42c81567e3 100644
--- a/libavfilter/af_channelsplit.c
+++ b/libavfilter/af_channelsplit.c
@@ -23,6 +23,7 @@
  * Split an audio stream into per-channel streams.
  */
 
+#include "libavutil/attributes.h"
 #include "libavutil/channel_layout.h"
 #include "libavutil/internal.h"
 #include "libavutil/opt.h"
@@ -49,7 +50,7 @@ static const AVOption channelsplit_options[] = {
 
 AVFILTER_DEFINE_CLASS(channelsplit);
 
-static int init(AVFilterContext *ctx)
+static av_cold int init(AVFilterContext *ctx)
 {
     ChannelSplitContext *s = ctx->priv;
     int nb_channels;
diff --git a/libavfilter/af_join.c b/libavfilter/af_join.c
index cea448b457..b8e9e85c4f 100644
--- a/libavfilter/af_join.c
+++ b/libavfilter/af_join.c
@@ -187,7 +187,7 @@ static int parse_maps(AVFilterContext *ctx)
     return 0;
 }
 
-static int join_init(AVFilterContext *ctx)
+static av_cold int join_init(AVFilterContext *ctx)
 {
     JoinContext *s = ctx->priv;
     int ret, i;
@@ -235,7 +235,7 @@ fail:
     return ret;
 }
 
-static void join_uninit(AVFilterContext *ctx)
+static av_cold void join_uninit(AVFilterContext *ctx)
 {
     JoinContext *s = ctx->priv;
     int i;
diff --git a/libavfilter/af_volume.c b/libavfilter/af_volume.c
index a55e1a3518..b7aec8d6fa 100644
--- a/libavfilter/af_volume.c
+++ b/libavfilter/af_volume.c
@@ -165,7 +165,7 @@ static inline void scale_samples_s32(uint8_t *dst, const uint8_t *src,
         smp_dst[i] = av_clipl_int32((((int64_t)smp_src[i] * volume + 128) >> 8));
 }
 
-static void volume_init(VolumeContext *vol)
+static av_cold void volume_init(VolumeContext *vol)
 {
     vol->samples_align = 1;
 
diff --git a/libavfilter/split.c b/libavfilter/split.c
index 3e6a60f0dc..f3fe2336af 100644
--- a/libavfilter/split.c
+++ b/libavfilter/split.c
@@ -25,6 +25,7 @@
 
 #include <stdio.h>
 
+#include "libavutil/attributes.h"
 #include "libavutil/internal.h"
 #include "libavutil/mem.h"
 #include "libavutil/opt.h"
@@ -39,7 +40,7 @@ typedef struct SplitContext {
     int nb_outputs;
 } SplitContext;
 
-static int split_init(AVFilterContext *ctx)
+static av_cold int split_init(AVFilterContext *ctx)
 {
     SplitContext *s = ctx->priv;
     int i;
@@ -58,7 +59,7 @@ static int split_init(AVFilterContext *ctx)
     return 0;
 }
 
-static void split_uninit(AVFilterContext *ctx)
+static av_cold void split_uninit(AVFilterContext *ctx)
 {
     int i;
 
diff --git a/libavfilter/src_movie.c b/libavfilter/src_movie.c
index 6a282065a8..fbf42f2080 100644
--- a/libavfilter/src_movie.c
+++ b/libavfilter/src_movie.c
@@ -30,6 +30,8 @@
 /* #define DEBUG */
 
 #include <float.h>
+
+#include "libavutil/attributes.h"
 #include "libavutil/avstring.h"
 #include "libavutil/avassert.h"
 #include "libavutil/opt.h"
diff --git a/libavfilter/vf_hqdn3d.c b/libavfilter/vf_hqdn3d.c
index 9c2e9edb95..51adeb8499 100644
--- a/libavfilter/vf_hqdn3d.c
+++ b/libavfilter/vf_hqdn3d.c
@@ -29,6 +29,7 @@
 #include <float.h>
 
 #include "config.h"
+#include "libavutil/attributes.h"
 #include "libavutil/common.h"
 #include "libavutil/pixdesc.h"
 #include "libavutil/intreadwrite.h"
@@ -181,7 +182,7 @@ static int16_t *precalc_coefs(double dist25, int depth)
 #define PARAM2_DEFAULT 3.0
 #define PARAM3_DEFAULT 6.0
 
-static int init(AVFilterContext *ctx)
+static av_cold int init(AVFilterContext *ctx)
 {
     HQDN3DContext *hqdn3d = ctx->priv;
 
@@ -201,7 +202,7 @@ static int init(AVFilterContext *ctx)
     return 0;
 }
 
-static void uninit(AVFilterContext *ctx)
+static av_cold void uninit(AVFilterContext *ctx)
 {
     HQDN3DContext *hqdn3d = ctx->priv;
 
diff --git a/libavfilter/vf_lut.c b/libavfilter/vf_lut.c
index 010f58af28..c69efed90d 100644
--- a/libavfilter/vf_lut.c
+++ b/libavfilter/vf_lut.c
@@ -24,6 +24,7 @@
  * value, and apply it to input video.
  */
 
+#include "libavutil/attributes.h"
 #include "libavutil/common.h"
 #include "libavutil/eval.h"
 #include "libavutil/opt.h"
@@ -371,7 +372,7 @@ DEFINE_LUT_FILTER(lut, "Compute and apply a lookup table to the RGB/YUV input vi
 #define lutyuv_options options
 AVFILTER_DEFINE_CLASS(lutyuv);
 
-static int lutyuv_init(AVFilterContext *ctx)
+static av_cold int lutyuv_init(AVFilterContext *ctx)
 {
     LutContext *lut = ctx->priv;
 
@@ -388,7 +389,7 @@ DEFINE_LUT_FILTER(lutyuv, "Compute and apply a lookup table to the YUV input vid
 #define lutrgb_options options
 AVFILTER_DEFINE_CLASS(lutrgb);
 
-static int lutrgb_init(AVFilterContext *ctx)
+static av_cold int lutrgb_init(AVFilterContext *ctx)
 {
     LutContext *lut = ctx->priv;
 
@@ -409,7 +410,7 @@ static const AVOption negate_options[] = {
 
 AVFILTER_DEFINE_CLASS(negate);
 
-static int negate_init(AVFilterContext *ctx)
+static av_cold int negate_init(AVFilterContext *ctx)
 {
     LutContext *lut = ctx->priv;
     int i;
diff --git a/libavfilter/x86/af_volume_init.c b/libavfilter/x86/af_volume_init.c
index beee8ca1f5..81d605f374 100644
--- a/libavfilter/x86/af_volume_init.c
+++ b/libavfilter/x86/af_volume_init.c
@@ -17,6 +17,7 @@
  */
 
 #include "config.h"
+#include "libavutil/attributes.h"
 #include "libavutil/cpu.h"
 #include "libavutil/samplefmt.h"
 #include "libavutil/x86/cpu.h"
@@ -32,7 +33,7 @@ void ff_scale_samples_s32_ssse3_atom(uint8_t *dst, const uint8_t *src, int len,
 void ff_scale_samples_s32_avx(uint8_t *dst, const uint8_t *src, int len,
                               int volume);
 
-void ff_volume_init_x86(VolumeContext *vol)
+av_cold void ff_volume_init_x86(VolumeContext *vol)
 {
     int mm_flags = av_get_cpu_flags();
     enum AVSampleFormat sample_fmt = av_get_packed_sample_fmt(vol->sample_fmt);