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| author | Sami Tolvanen <samitolvanen@google.com> | 2020-09-25 16:43:53 -0700 |
|---|---|---|
| committer | Kees Cook <keescook@chromium.org> | 2021-02-23 12:46:57 -0800 |
| commit | 22c8542d7b220ffc53816d47b371b1fe34341d4a (patch) | |
| tree | 55e578bad8de1fb1142b4f4f694a33ab5485dcfe /kernel | |
| parent | 0e731dbc18241d68318e0a7d2c2c0087c9073fb9 (diff) | |
| download | linux-stable-22c8542d7b220ffc53816d47b371b1fe34341d4a.tar.gz linux-stable-22c8542d7b220ffc53816d47b371b1fe34341d4a.tar.bz2 linux-stable-22c8542d7b220ffc53816d47b371b1fe34341d4a.zip | |
tracing: add support for objtool mcount
This change adds build support for using objtool to generate
__mcount_loc sections.
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/trace/Kconfig | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig index 3985a31a49b7..936ccab1b938 100644 --- a/kernel/trace/Kconfig +++ b/kernel/trace/Kconfig @@ -60,6 +60,11 @@ config HAVE_NOP_MCOUNT help Arch supports the gcc options -pg with -mrecord-mcount and -nop-mcount +config HAVE_OBJTOOL_MCOUNT + bool + help + Arch supports objtool --mcount + config HAVE_C_RECORDMCOUNT bool help @@ -612,10 +617,18 @@ config FTRACE_MCOUNT_USE_CC depends on !FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY depends on FTRACE_MCOUNT_RECORD +config FTRACE_MCOUNT_USE_OBJTOOL + def_bool y + depends on HAVE_OBJTOOL_MCOUNT + depends on !FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY + depends on !FTRACE_MCOUNT_USE_CC + depends on FTRACE_MCOUNT_RECORD + config FTRACE_MCOUNT_USE_RECORDMCOUNT def_bool y depends on !FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY depends on !FTRACE_MCOUNT_USE_CC + depends on !FTRACE_MCOUNT_USE_OBJTOOL depends on FTRACE_MCOUNT_RECORD config TRACING_MAP |