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| author | Joe Lawrence <joe.lawrence@redhat.com> | 2018-11-20 15:19:18 -0500 |
|---|---|---|
| committer | Steven Rostedt (VMware) <rostedt@goodmis.org> | 2018-12-08 20:54:08 -0500 |
| commit | 9c8e2f6d3d361439cc6744a094f1c15681b55269 (patch) | |
| tree | 7128b26dfcaf727dc522120570c9fa71de728eb5 /scripts/recordmcount.c | |
| parent | ca16b0fbb05242f18da9d810c07d3882ffed831c (diff) | |
| download | lwn-9c8e2f6d3d361439cc6744a094f1c15681b55269.tar.gz lwn-9c8e2f6d3d361439cc6744a094f1c15681b55269.zip | |
scripts/recordmcount.{c,pl}: support -ffunction-sections .text.* section names
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@redhat.com
Signed-off-by: Joe Lawrence <joe.lawrence@redhat.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Diffstat (limited to 'scripts/recordmcount.c')
| -rw-r--r-- | scripts/recordmcount.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/scripts/recordmcount.c b/scripts/recordmcount.c index 895c40e8679f..a50a2aa963ad 100644 --- a/scripts/recordmcount.c +++ b/scripts/recordmcount.c @@ -397,7 +397,7 @@ static uint32_t (*w2)(uint16_t); static int is_mcounted_section_name(char const *const txtname) { - return strcmp(".text", txtname) == 0 || + return strncmp(".text", txtname, 5) == 0 || strcmp(".init.text", txtname) == 0 || strcmp(".ref.text", txtname) == 0 || strcmp(".sched.text", txtname) == 0 || |