kernel_headers: Fix headers not detected in incremental builds

Currently the Soong logic doesn't kick in if a change updates
headers but doesn't update gen_headers_arm*.bp files for
incremental builds. Fix the issue by making inputs to the
kernel_headers.py script as variables instead of a list.

Change-Id: I9737f6d655848458bfda70b8c6f4d9aa896a98fc
Signed-off-by: Rishabh Bhatnagar <rishabhb@codeaurora.org>
Signed-off-by: Prateek Sood <prsood@codeaurora.org>
[bharad@codeaurora.org: resolve trivial merge conflicts]
Signed-off-by: Naitik Bharadiya <bharad@codeaurora.org>
[schikk@codeaurora.org: resolve trivial merge conflicts]
Signed-off-by: Swetha Chikkaboraiah <schikk@codeaurora.org>

1 files changed, 52 insertions, 42 deletions

diff --git a/gen_headers_arm.bp b/gen_headers_arm.bp
index 3c8598c042b2..9ee49cdfad39 100644
--- a/gen_headers_arm.bp
+++ b/gen_headers_arm.bp
@@ -1,7 +1,51 @@
 // ***** DO NOT EDIT *****
 // This file is generated by kernel_headers.py
 
-gen_headers_arm = [
+gen_headers_srcs_arm = [
+    "arch/arm/include/uapi/asm/Kbuild",
+    "include/uapi/asm-generic/Kbuild.asm",
+    "Makefile",
+    "arch/arm/tools/syscall.tbl",
+    "include/uapi/**/*.h",
+    "arch/arm/include/uapi/**/*.h",
+]
+
+gen_headers_exclude_srcs_arm = [
+    "include/uapi/linux/a.out.h",
+    "include/uapi/drm/armada_drm.h",
+    "include/uapi/drm/omap_drm.h",
+    "include/uapi/linux/auto_dev-ioctl.h",
+    "include/uapi/linux/batman_adv.h",
+    "include/uapi/linux/bcache.h",
+    "include/uapi/linux/btrfs_tree.h",
+    "include/uapi/linux/cryptouser.h",
+    "include/uapi/linux/dma-buf.h",
+    "include/uapi/linux/hash_info.h",
+    "include/uapi/linux/kcm.h",
+    "include/uapi/linux/kcov.h",
+    "include/uapi/linux/kfd_ioctl.h",
+    "include/uapi/linux/lightnvm.h",
+    "include/uapi/linux/module.h",
+    "include/uapi/linux/nilfs2_api.h",
+    "include/uapi/linux/nilfs2_ondisk.h",
+    "include/uapi/linux/nsfs.h",
+    "include/uapi/linux/pr.h",
+    "include/uapi/linux/stm.h",
+    "include/uapi/linux/tee.h",
+    "include/uapi/linux/userio.h",
+    "include/uapi/linux/wil6210_uapi.h",
+    "include/uapi/rdma/qedr-abi.h",
+    "include/uapi/video/adf.h",
+    "include/uapi/linux/cifs/cifs_mount.h",
+    "include/uapi/linux/genwqe/genwqe_card.h",
+    "include/uapi/linux/goldfish/goldfish_dma.h",
+    "include/uapi/linux/netfilter/xt_HARDIDLETIMER.h",
+    "include/uapi/linux/netfilter/xt_SYNPROXY.h",
+    "include/uapi/linux/usb/f_accessory.h",
+    "include/uapi/linux/usb/f_mtp.h",
+]
+
+gen_headers_out_arm = [
 
     // Matching generated-y:
 
@@ -888,7 +932,8 @@ genrule {
     // checked later to ensure that it matches the checked-
     // in version (this file).
     name: "qti_generate_gen_headers_arm",
-    srcs: ["arch/arm/include/uapi/asm/Kbuild", "include/uapi/asm-generic/Kbuild.asm", "arch/arm/include/uapi/**/*.h"],
+    srcs: gen_headers_srcs_arm,
+    exclude_srcs: gen_headers_exclude_srcs_arm,
     tool_files: ["kernel_headers.py"],
     cmd: "python3 $(location kernel_headers.py) " +
         kernel_headers_verbose +
@@ -897,7 +942,8 @@ genrule {
         "--arch_asm_kbuild $(location arch/arm/include/uapi/asm/Kbuild) " +
         "--arch_include_uapi $(locations arch/arm/include/uapi/**/*.h) " +
         "--asm_generic_kbuild $(location include/uapi/asm-generic/Kbuild.asm) " +
-        "blueprints",
+        "blueprints " +
+        "# $(in)",
     out: ["gen_headers_arm.bp"],
 }
 
@@ -908,47 +954,11 @@ genrule {
         "kernel_headers.py",
         "arch/arm/tools/syscallhdr.sh",
     ],
-    srcs: [
-        "arch/arm/include/uapi/asm/Kbuild",
-        "include/uapi/asm-generic/Kbuild.asm",
+    srcs: gen_headers_srcs_arm +[
         "gen_headers_arm.bp",
         ":qti_generate_gen_headers_arm",
-        "Makefile",
-        "arch/arm/tools/syscall.tbl",
-        "include/uapi/**/*.h",
-        "arch/arm/include/uapi/**/*.h",
-    ],
-    exclude_srcs: [
-        "include/uapi/linux/a.out.h",
-        "include/uapi/drm/amdgpu_drm.h",
-        "include/uapi/drm/armada_drm.h",
-        "include/uapi/drm/omap_drm.h",
-        "include/uapi/linux/bcache.h",
-        "include/uapi/linux/cryptouser.h",
-        "include/uapi/linux/coresight-stm.h",
-        "include/uapi/linux/hash_info.h",
-        "include/uapi/linux/kcov.h",
-        "include/uapi/linux/keychord.h",
-        "include/uapi/linux/kfd_ioctl.h",
-        "include/uapi/linux/lightnvm.h",
-        "include/uapi/linux/module.h",
-        "include/uapi/linux/pr.h",
-        "include/uapi/linux/stm.h",
-        "include/uapi/linux/tee.h",
-        "include/uapi/linux/userio.h",
-        "include/uapi/linux/vsp1.h",
-        "include/uapi/linux/wil6210_uapi.h",
-        "include/uapi/sound/asoc.h",
-        "include/uapi/sound/usb_stream.h",
-        "include/uapi/video/adf.h",
-        "include/uapi/linux/cifs/cifs_mount.h",
-        "include/uapi/linux/genwqe/genwqe_card.h",
-        "include/uapi/linux/goldfish/goldfish_dma.h",
-        "include/uapi/linux/netfilter/xt_HARDIDLETIMER.h",
-        "include/uapi/linux/netfilter/xt_SYNPROXY.h",
-        "include/uapi/linux/usb/f_accessory.h",
-        "include/uapi/linux/usb/f_mtp.h",
     ],
+    exclude_srcs: gen_headers_exclude_srcs_arm,
     cmd: "python3 $(location kernel_headers.py) " +
         kernel_headers_verbose +
         "--header_arch arm " +
@@ -964,5 +974,5 @@ genrule {
         "--arch_syscall_tbl $(location arch/arm/tools/syscall.tbl) " +
         "--headers_install $(location headers_install.sh) " +
         "--include_uapi $(locations include/uapi/**/*.h)",
-    out: ["linux/version.h"] + gen_headers_arm,
+    out: ["linux/version.h"] + gen_headers_out_arm,
 }