diff options
| author | Florent Revest <revest@chromium.org> | 2023-04-27 17:07:00 +0300 |
|---|---|---|
| committer | Steven Rostedt (Google) <rostedt@goodmis.org> | 2023-07-11 00:51:54 +0300 |
| commit | 8c3526fb86060cb53a1f4ca6cc44eb036afcf43e (patch) | |
| tree | 76657abb47a665e755dd4a93971f1e3d77bd0e2b /arch/arm64 | |
| parent | 8564c315876ab86fcaf8e7f558d6a84cb2ce5590 (diff) | |
| download | linux-8c3526fb86060cb53a1f4ca6cc44eb036afcf43e.tar.xz | |
arm64: ftrace: Add direct call trampoline samples support
The ftrace samples need per-architecture trampoline implementations
to save and restore argument registers around the calls to
my_direct_func* and to restore polluted registers (eg: x30).
These samples also include <asm/asm-offsets.h> which, on arm64, is not
necessary and redefines previously defined macros (resulting in
warnings) so these includes are guarded by !CONFIG_ARM64.
Link: https://lkml.kernel.org/r/20230427140700.625241-3-revest@chromium.org
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Tested-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Florent Revest <revest@chromium.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Diffstat (limited to 'arch/arm64')
| -rw-r--r-- | arch/arm64/Kconfig | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 7856c3a3e35a..a2511b30d0f6 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -197,6 +197,8 @@ config ARM64 !CC_OPTIMIZE_FOR_SIZE) select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY \ if DYNAMIC_FTRACE_WITH_ARGS + select HAVE_SAMPLE_FTRACE_DIRECT + select HAVE_SAMPLE_FTRACE_DIRECT_MULTI select HAVE_EFFICIENT_UNALIGNED_ACCESS select HAVE_FAST_GUP select HAVE_FTRACE_MCOUNT_RECORD |