diff options
| author | GONG, Ruiqi <gongruiqi1@huawei.com> | 2023-08-20 19:15:09 +0800 |
|---|---|---|
| committer | Steven Rostedt (Google) <rostedt@goodmis.org> | 2023-08-21 22:03:58 -0400 |
| commit | e332938e6fc8117fb9bb1374339cea879b3972d9 (patch) | |
| tree | 6c908738d957222f7dda426dd6a8e335a67216d9 /samples/ftrace/ftrace-direct-too.c | |
| parent | c2489bb7e6be2e8cdced12c16c42fa128403ac03 (diff) | |
samples: ftrace: Replace bti assembly with hint for older compiler
When cross-building the arm64 kernel with allmodconfig using GCC 9.4,
the following error occurs on multiple files under samples/ftrace/:
/tmp/ccPC1ODs.s: Assembler messages:
/tmp/ccPC1ODs.s:8: Error: selected processor does not support `bti c'
Fix this issue by replacing `bti c` with `hint 34`, which is compatible
for the older compiler.
Link: https://lore.kernel.org/linux-trace-kernel/20230820111509.1470826-1-gongruiqi@huaweicloud.com
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Florent Revest <revest@chromium.org>
Fixes: 8c3526fb86060cb5 ("arm64: ftrace: Add direct call trampoline samples support")
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: GONG, Ruiqi <gongruiqi1@huawei.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Diffstat (limited to 'samples/ftrace/ftrace-direct-too.c')
| -rw-r--r-- | samples/ftrace/ftrace-direct-too.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/samples/ftrace/ftrace-direct-too.c b/samples/ftrace/ftrace-direct-too.c index e9804c5307c0..e39c3563ae4e 100644 --- a/samples/ftrace/ftrace-direct-too.c +++ b/samples/ftrace/ftrace-direct-too.c @@ -81,7 +81,7 @@ asm ( " .type my_tramp, @function\n" " .globl my_tramp\n" " my_tramp:" -" bti c\n" +" hint 34\n" // bti c " sub sp, sp, #48\n" " stp x9, x30, [sp]\n" " stp x0, x1, [sp, #16]\n" |