kernel: add DEBUG_INFO_REDUCED config option

Add DEBUG_INFO_REDUCED as a kernel config option and remove it from the
kernel configs. This is in preparation of the upcoming option to enable
BTF typeinfo, which is incompatible with DEBUG_INFO_REDUCED.

Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>

diff --git a/config/Config-kernel.in b/config/Config-kernel.in
index ab827d6a71eb47ed0f6b71354b3372532d3656a5..e146107148b1f0721863175aaaad7daa5270a281 100644 (file)
--- a/config/Config-kernel.in
+++ b/config/Config-kernel.in
@@ -373,6 +373,20 @@ config KERNEL_DEBUG_INFO
        help
          This will compile your kernel and modules with debug information.
 
+config KERNEL_DEBUG_INFO_REDUCED
+       bool "Reduce debugging information"
+       default y
+       depends on KERNEL_DEBUG_INFO
+       help
+         If you say Y here gcc is instructed to generate less debugging
+         information for structure types. This means that tools that
+         need full debugging information (like kgdb or systemtap) won't
+         be happy. But if you merely need debugging information to
+         resolve line numbers there is no loss. Advantage is that
+         build directory object sizes shrink dramatically over a full
+         DEBUG_INFO build and compile times are reduced too.
+         Only works with newer gcc versions.
+
 config KERNEL_DEBUG_LL_UART_NONE
        bool
        default n

diff --git a/target/linux/generic/config-5.10 b/target/linux/generic/config-5.10
index a400b63e17a059b50aaee7a2448e7c9653e486f2..c969c8e42278ede39b0546b8a0651df4a5035939 100644 (file)
--- a/target/linux/generic/config-5.10
+++ b/target/linux/generic/config-5.10
@@ -1276,7 +1276,6 @@ CONFIG_DEBUG_FS_ALLOW_ALL=y
 # CONFIG_DEBUG_INFO_BTF is not set
 # CONFIG_DEBUG_INFO_COMPRESSED is not set
 # CONFIG_DEBUG_INFO_DWARF4 is not set
-CONFIG_DEBUG_INFO_REDUCED=y
 # CONFIG_DEBUG_INFO_SPLIT is not set
 CONFIG_DEBUG_KERNEL=y
 # CONFIG_DEBUG_KMEMLEAK is not set

diff --git a/target/linux/generic/config-5.15 b/target/linux/generic/config-5.15
index 93c22e3896706ee0e0e90fa3fcf8faa0691670b3..d53e4cc55b771e6200b39dc87c8f870dded2d19d 100644 (file)
--- a/target/linux/generic/config-5.15
+++ b/target/linux/generic/config-5.15
@@ -1315,7 +1315,6 @@ CONFIG_DEBUG_FS_ALLOW_ALL=y
 # CONFIG_DEBUG_INFO_DWARF4 is not set
 # CONFIG_DEBUG_INFO_DWARF5 is not set
 CONFIG_DEBUG_INFO_DWARF_TOOLCHAIN_DEFAULT=y
-CONFIG_DEBUG_INFO_REDUCED=y
 # CONFIG_DEBUG_INFO_SPLIT is not set
 # CONFIG_DEBUG_IRQFLAGS is not set
 CONFIG_DEBUG_KERNEL=y