target/linux/generic/hack-5.10/904-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 @@ -184,7 +184,7 @@ 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/heaps/Makefile
  26 +++ b/drivers/dma-buf/heaps/Makefile
  27 @@ -1,4 +1,4 @@
  28  # SPDX-License-Identifier: GPL-2.0
  29 -obj-y                                  += heap-helpers.o
  30 -obj-$(CONFIG_DMABUF_HEAPS_SYSTEM)      += system_heap.o
  31 -obj-$(CONFIG_DMABUF_HEAPS_CMA)         += cma_heap.o
  32 +dma-buf-objs-y                                 += heap-helpers.o
  33 +dma-buf-objs-$(CONFIG_DMABUF_HEAPS_SYSTEM)     += system_heap.o
  34 +dma-buf-objs-$(CONFIG_DMABUF_HEAPS_CMA)                += cma_heap.o
  35 --- a/drivers/dma-buf/Makefile
  36 +++ b/drivers/dma-buf/Makefile
  37 @@ -1,15 +1,19 @@
  38  # SPDX-License-Identifier: GPL-2.0-only
  39 -obj-y := dma-buf.o dma-fence.o dma-fence-array.o dma-fence-chain.o \
  40 +obj-$(CONFIG_DMA_SHARED_BUFFER) := dma-shared-buffer.o
  41 +
  42 +dma-buf-objs-y := dma-buf.o dma-fence.o dma-fence-array.o dma-fence-chain.o \
  43          dma-resv.o seqno-fence.o
  44 -obj-$(CONFIG_DMABUF_HEAPS)     += dma-heap.o
  45 -obj-$(CONFIG_DMABUF_HEAPS)     += heaps/
  46 -obj-$(CONFIG_SYNC_FILE)                += sync_file.o
  47 -obj-$(CONFIG_SW_SYNC)          += sw_sync.o sync_debug.o
  48 -obj-$(CONFIG_UDMABUF)          += udmabuf.o
  49 +dma-buf-objs-$(CONFIG_DMABUF_HEAPS)    += dma-heap.o
  50 +obj-$(CONFIG_DMABUF_HEAPS)             += heaps/
  51 +dma-buf-objs-$(CONFIG_SYNC_FILE)       += sync_file.o
  52 +dma-buf-objs-$(CONFIG_SW_SYNC)         += sw_sync.o sync_debug.o
  53 +dma-buf-objs-$(CONFIG_UDMABUF)         += udmabuf.o
  54
  55  dmabuf_selftests-y := \
  56         selftest.o \
  57         st-dma-fence.o \
  58         st-dma-fence-chain.o
  59
  60 -obj-$(CONFIG_DMABUF_SELFTESTS) += dmabuf_selftests.o
  61 +dma-buf-objs-$(CONFIG_DMABUF_SELFTESTS)        += dmabuf_selftests.o
  62 +
  63 +dma-shared-buffer-objs :=  $(dma-buf-objs-y)
  64 --- a/drivers/dma-buf/dma-buf.c
  65 +++ b/drivers/dma-buf/dma-buf.c
  66 @@ -1419,4 +1419,5 @@ static void __exit dma_buf_deinit(void)
  67         dma_buf_uninit_debugfs();
  68         kern_unmount(dma_buf_mnt);
  69  }
  70 -__exitcall(dma_buf_deinit);
  71 +module_exit(dma_buf_deinit);
  72 +MODULE_LICENSE("GPL");
  73 --- a/kernel/sched/core.c
  74 +++ b/kernel/sched/core.c
  75 @@ -3074,6 +3074,7 @@ int wake_up_state(struct task_struct *p,
  76  {
  77         return try_to_wake_up(p, state, 0);
  78  }
  79 +EXPORT_SYMBOL_GPL(wake_up_state);
  80
  81  /*
  82   * Perform scheduler related setup for a newly forked process p.
  83 --- a/fs/d_path.c
  84 +++ b/fs/d_path.c
  85 @@ -311,6 +311,7 @@ char *dynamic_dname(struct dentry *dentr
  86         buffer += buflen - sz;
  87         return memcpy(buffer, temp, sz);
  88  }
  89 +EXPORT_SYMBOL_GPL(dynamic_dname);
  90
  91  char *simple_dname(struct dentry *dentry, char *buffer, int buflen)
  92  {