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| author |   Song Shuai <suagrfillet@gmail.com> | 2023-01-30 16:59:54 +0800 |
|---|---|---|
| committer |   Steven Rostedt (Google) <rostedt@goodmis.org> | 2023-02-07 12:44:39 -0500 |
| commit | 01678fbce3dd2e3042077cf71b68157e733614a0 (patch) | |
| tree | 2858675dc8038423237158bfac5701026eab37cf /samples/ftrace/ftrace-direct.c | |
| parent | tracing: Acquire buffer from temparary trace sequence (diff) | |
| download | wireguard-linux-01678fbce3dd2e3042077cf71b68157e733614a0.tar.xz wireguard-linux-01678fbce3dd2e3042077cf71b68157e733614a0.zip | |
samples: ftrace: Include the nospec-branch.h only for x86
When other architectures without the nospec functionality write their
direct-call functions of samples/ftrace/*.c, the including of
asm/nospec-branch.h must be taken care to fix the no header file found
error in building process.
This commit (ee3e2469b346 "x86/ftrace: Make it call depth tracking aware")
file-globally includes asm/nospec-branch.h providing CALL_DEPTH_ACCOUNT
for only x86 direct-call functions.
It seems better to move the including to `#ifdef CONFIG_X86_64`.
Link: https://lore.kernel.org/linux-trace-kernel/20230130085954.647845-1-suagrfillet@gmail.com
Signed-off-by: Song Shuai <suagrfillet@gmail.com>
Reviewed-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Diffstat (limited to 'samples/ftrace/ftrace-direct.c')
| -rw-r--r-- | samples/ftrace/ftrace-direct.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/samples/ftrace/ftrace-direct.c b/samples/ftrace/ftrace-direct.c index 1f769d0db20f..1d3d307ca33d 100644 --- a/samples/ftrace/ftrace-direct.c +++ b/samples/ftrace/ftrace-direct.c @@ -4,7 +4,6 @@ #include <linux/sched.h> /* for wake_up_process() */ #include <linux/ftrace.h> #include <asm/asm-offsets.h> -#include <asm/nospec-branch.h> extern void my_direct_func(struct task_struct *p); @@ -18,6 +17,7 @@ extern void my_tramp(void *); #ifdef CONFIG_X86_64 #include <asm/ibt.h> +#include <asm/nospec-branch.h> asm ( " .pushsection .text, \"ax\", @progbits\n" |