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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 | |
parent | a9c4bdd505630469f93f5efedfc7a9ca254996c8 (diff) | |
download | linux-01678fbce3dd2e3042077cf71b68157e733614a0.tar.gz linux-01678fbce3dd2e3042077cf71b68157e733614a0.tar.bz2 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>
-rw-r--r-- | samples/ftrace/ftrace-direct-modify.c | 2 | ||||
-rw-r--r-- | samples/ftrace/ftrace-direct-multi-modify.c | 2 | ||||
-rw-r--r-- | samples/ftrace/ftrace-direct-multi.c | 2 | ||||
-rw-r--r-- | samples/ftrace/ftrace-direct-too.c | 2 | ||||
-rw-r--r-- | samples/ftrace/ftrace-direct.c | 2 |
5 files changed, 5 insertions, 5 deletions
diff --git a/samples/ftrace/ftrace-direct-modify.c b/samples/ftrace/ftrace-direct-modify.c index de5a0f67f320..d93abbcb1f4c 100644 --- a/samples/ftrace/ftrace-direct-modify.c +++ b/samples/ftrace/ftrace-direct-modify.c @@ -3,7 +3,6 @@ #include <linux/kthread.h> #include <linux/ftrace.h> #include <asm/asm-offsets.h> -#include <asm/nospec-branch.h> extern void my_direct_func1(void); extern void my_direct_func2(void); @@ -26,6 +25,7 @@ static unsigned long my_ip = (unsigned long)schedule; #ifdef CONFIG_X86_64 #include <asm/ibt.h> +#include <asm/nospec-branch.h> asm ( " .pushsection .text, \"ax\", @progbits\n" diff --git a/samples/ftrace/ftrace-direct-multi-modify.c b/samples/ftrace/ftrace-direct-multi-modify.c index a825dbd2c9cf..b58c594efb51 100644 --- a/samples/ftrace/ftrace-direct-multi-modify.c +++ b/samples/ftrace/ftrace-direct-multi-modify.c @@ -3,7 +3,6 @@ #include <linux/kthread.h> #include <linux/ftrace.h> #include <asm/asm-offsets.h> -#include <asm/nospec-branch.h> extern void my_direct_func1(unsigned long ip); extern void my_direct_func2(unsigned long ip); @@ -24,6 +23,7 @@ extern void my_tramp2(void *); #ifdef CONFIG_X86_64 #include <asm/ibt.h> +#include <asm/nospec-branch.h> asm ( " .pushsection .text, \"ax\", @progbits\n" diff --git a/samples/ftrace/ftrace-direct-multi.c b/samples/ftrace/ftrace-direct-multi.c index d955a2650605..c27cf130c319 100644 --- a/samples/ftrace/ftrace-direct-multi.c +++ b/samples/ftrace/ftrace-direct-multi.c @@ -5,7 +5,6 @@ #include <linux/ftrace.h> #include <linux/sched/stat.h> #include <asm/asm-offsets.h> -#include <asm/nospec-branch.h> extern void my_direct_func(unsigned long ip); @@ -19,6 +18,7 @@ extern void my_tramp(void *); #ifdef CONFIG_X86_64 #include <asm/ibt.h> +#include <asm/nospec-branch.h> asm ( " .pushsection .text, \"ax\", @progbits\n" diff --git a/samples/ftrace/ftrace-direct-too.c b/samples/ftrace/ftrace-direct-too.c index e13fb59a2b47..8139dce2a31c 100644 --- a/samples/ftrace/ftrace-direct-too.c +++ b/samples/ftrace/ftrace-direct-too.c @@ -4,7 +4,6 @@ #include <linux/mm.h> /* for handle_mm_fault() */ #include <linux/ftrace.h> #include <asm/asm-offsets.h> -#include <asm/nospec-branch.h> extern void my_direct_func(struct vm_area_struct *vma, unsigned long address, unsigned int flags); @@ -21,6 +20,7 @@ extern void my_tramp(void *); #ifdef CONFIG_X86_64 #include <asm/ibt.h> +#include <asm/nospec-branch.h> asm ( " .pushsection .text, \"ax\", @progbits\n" 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" |