target/linux/generic/hack-5.4/904-debloat_dma_buf.patch

   1 From e3692cb2fcd5ba1244512a0f43b8118f65f1c375 Mon Sep 17 00:00:00 2001
   2 From: Felix Fietkau <nbd@nbd.name>
   3 Date: Sat, 8 Jul 2017 08:20:43 +0200
   4 Subject: debloat: dmabuf
   5
   6 Signed-off-by: Felix Fietkau <nbd@nbd.name>
   7 ---
   8  drivers/base/Kconfig      |  2 +-
   9  drivers/dma-buf/Makefile  | 10 +++++++---
  10  drivers/dma-buf/dma-buf.c |  4 +++-
  11  kernel/sched/core.c       |  1 +
  12  4 files changed, 12 insertions(+), 5 deletions(-)
  13
  14 --- a/drivers/base/Kconfig
  15 +++ b/drivers/base/Kconfig
  16 @@ -179,7 +179,7 @@ config SOC_BUS
  17  source "drivers/base/regmap/Kconfig"
  18
  19  config DMA_SHARED_BUFFER
  20 -       bool
  21 +       tristate
  22         default n
  23         select IRQ_WORK
  24         help
  25 --- a/drivers/dma-buf/Makefile
  26 +++ b/drivers/dma-buf/Makefile
  27 @@ -1,9 +1,13 @@
  28  # SPDX-License-Identifier: GPL-2.0-only
  29 -obj-y := dma-buf.o dma-fence.o dma-fence-array.o dma-fence-chain.o \
  30 -        dma-resv.o seqno-fence.o
  31 -obj-$(CONFIG_SYNC_FILE)                += sync_file.o
  32 -obj-$(CONFIG_SW_SYNC)          += sw_sync.o sync_debug.o
  33 -obj-$(CONFIG_UDMABUF)          += udmabuf.o
  34 +obj-$(CONFIG_DMA_SHARED_BUFFER) := dma-shared-buffer.o
  35 +
  36 +dma-buf-objs-y := dma-buf.o dma-fence.o dma-fence-array.o dma-fence-chain.o \
  37 +                 dma-resv.o seqno-fence.o
  38 +dma-buf-objs-$(CONFIG_SYNC_FILE)       += sync_file.o
  39 +dma-buf-objs-$(CONFIG_SW_SYNC)         += sw_sync.o sync_debug.o
  40 +dma-buf-objs-$(CONFIG_UDMABUF)         += udmabuf.o
  41 +
  42 +dma-shared-buffer-objs :=  $(dma-buf-objs-y)
  43
  44  dmabuf_selftests-y := \
  45         selftest.o \
  46 --- a/drivers/dma-buf/dma-buf.c
  47 +++ b/drivers/dma-buf/dma-buf.c
  48 @@ -1313,4 +1313,5 @@ static void __exit dma_buf_deinit(void)
  49         dma_buf_uninit_debugfs();
  50         kern_unmount(dma_buf_mnt);
  51  }
  52 -__exitcall(dma_buf_deinit);
  53 +module_exit(dma_buf_deinit);
  54 +MODULE_LICENSE("GPL");
  55 --- a/kernel/sched/core.c
  56 +++ b/kernel/sched/core.c
  57 @@ -2754,6 +2754,7 @@ int wake_up_state(struct task_struct *p,
  58  {
  59         return try_to_wake_up(p, state, 0);
  60  }
  61 +EXPORT_SYMBOL_GPL(wake_up_state);
  62
  63  /*
  64   * Perform scheduler related setup for a newly forked process p.
  65 --- a/fs/d_path.c
  66 +++ b/fs/d_path.c
  67 @@ -311,6 +311,7 @@ char *dynamic_dname(struct dentry *dentr
  68         buffer += buflen - sz;
  69         return memcpy(buffer, temp, sz);
  70  }
  71 +EXPORT_SYMBOL_GPL(dynamic_dname);
  72
  73  char *simple_dname(struct dentry *dentry, char *buffer, int buflen)
  74  {