All of lore.kernel.org
 help / color / mirror / Atom feed
From: Sven Schnelle <svens@stackframe.org>
To: deller@gmx.de
Cc: linux-parisc@vger.kernel.org, Sven Schnelle <svens@stackframe.org>
Subject: [PATCH] parisc: strip debug information when building compressed images
Date: Wed, 31 Jul 2019 19:19:23 +0200	[thread overview]
Message-ID: <20190731171923.24155-1-svens@stackframe.org> (raw)

When compiling the kernel with debug information i got the following error:

hppa-linux-gnu-ld: section .text LMA [0000000000e78000,0000000000e7b41f] overlaps section .rodata.compressed LMA [00000000000e0078,00000000015ad43d]
make[3]: *** [/home/svens/parisc-linux/src/arch/parisc/boot/compressed/Makefile:28: arch/parisc/boot/compressed/vmlinux] Error 1
make[2]: *** [/home/svens/parisc-linux/src/arch/parisc/boot/Makefile:17: arch/parisc/boot/compressed/vmlinux] Error 2
make[2]: Target 'arch/parisc/boot/bzImage' not remade because of errors.

While this might also be fixed by adjusting the linker script, i think we
should strip the debug information when generating the compressed image. This
reduces the size of vmlinuz/lifimage from ~69MB to 6.6MB when full debug
information is enabled.

Signed-off-by: Sven Schnelle <svens@stackframe.org>
---
 arch/parisc/boot/compressed/Makefile | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/arch/parisc/boot/compressed/Makefile b/arch/parisc/boot/compressed/Makefile
index 2da8624e5cf6..2a81997b1079 100644
--- a/arch/parisc/boot/compressed/Makefile
+++ b/arch/parisc/boot/compressed/Makefile
@@ -55,8 +55,11 @@ $(obj)/misc.o: $(obj)/sizes.h
 CPPFLAGS_vmlinux.lds += -I$(objtree)/$(obj) -DBOOTLOADER
 $(obj)/vmlinux.lds: $(obj)/sizes.h
 
+quiet_cmd_objcopy_strip_debug = OBJCOPY_STRIP_DEBUG $@
+      cmd_objcopy_strip_debug = $(OBJCOPY) --strip-debug $< $@
+
 $(obj)/vmlinux.bin: vmlinux
-	$(call if_changed,objcopy)
+	$(call if_changed,objcopy_strip_debug)
 
 vmlinux.bin.all-y := $(obj)/vmlinux.bin
 
-- 
2.20.1


             reply	other threads:[~2019-07-31 17:19 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-07-31 17:19 Sven Schnelle [this message]
2019-07-31 19:28 ` [PATCH] parisc: strip debug information when building compressed images Helge Deller
2019-07-31 19:36   ` Helge Deller
2019-07-31 19:55     ` Sven Schnelle
2019-07-31 20:07       ` Helge Deller
2019-07-31 20:19         ` Sven Schnelle
2019-07-31 19:37   ` James Bottomley
2019-07-31 19:40     ` Helge Deller
2019-07-31 19:45       ` James Bottomley

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20190731171923.24155-1-svens@stackframe.org \
    --to=svens@stackframe.org \
    --cc=deller@gmx.de \
    --cc=linux-parisc@vger.kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.