On Fri, Mar 12, 2021 at 02:17:49PM -0800, Manoj Gupta wrote:
From: Joe Lawrence joe.lawrence@redhat.com
commit 9c8e2f6d3d361439cc6744a094f1c15681b55269 upstream.
When building with -ffunction-sections, the compiler will place each function into its own ELF section, prefixed with ".text". For example, a simple test module with functions test_module_do_work() and test_module_wq_func():
% objdump --section-headers test_module.o | awk '/.text/{print $2}' .text .text.test_module_do_work .text.test_module_wq_func .init.text .exit.text
Adjust the recordmcount scripts to look for ".text" as a section name prefix. This will ensure that those functions will be included in the __mcount_loc relocations:
% objdump --reloc --section __mcount_loc test_module.o OFFSET TYPE VALUE 0000000000000000 R_X86_64_64 .text.test_module_do_work 0000000000000008 R_X86_64_64 .text.test_module_wq_func 0000000000000010 R_X86_64_64 .init.text
Link: http://lkml.kernel.org/r/1542745158-25392-2-git-send-email-joe.lawrence@redh...
Signed-off-by: Joe Lawrence joe.lawrence@redhat.com Signed-off-by: Steven Rostedt (VMware) rostedt@goodmis.org
[Manoj: Resolve conflict on 4.4.y/4.9.y because of missing 42c269c88dc1] Signed-off-by: Manoj Gupta manojgupta@google.com
Changes v1 -> v2: Change "nc" to "Manoj"
Now queued up, thanks.
greg k-h