[mark:arm64/ftrace/minimal-regs 5/6] arch/x86/include/asm/ftrace.h:47:32: error: implicit declaration of function 'ftrace_get_regs'

From: kernel test robot
Date: Wed Jun 01 2022 - 13:12:31 EST

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tree: https://git.kernel.org/pub/scm/linux/kernel/git/mark/linux.git arm64/ftrace/minimal-regs
head: b0741d059a9f19a1aa1191833140f53e41f1775a
commit: c694698df7f633bcbdf8bc0edb94f4a70ed0d092 [5/6] ftrace: pass fregs to arch_ftrace_set_direct_caller()
config: x86_64-kexec (https://download.01.org/0day-ci/archive/20220602/202206020125.fCHkOl8F-lkp@xxxxxxxxx/config)
compiler: gcc-11 (Debian 11.3.0-1) 11.3.0
reproduce (this is a W=1 build):
# https://git.kernel.org/pub/scm/linux/kernel/git/mark/linux.git/commit/?id=c694698df7f633bcbdf8bc0edb94f4a70ed0d092
git remote add mark https://git.kernel.org/pub/scm/linux/kernel/git/mark/linux.git
git fetch --no-tags mark arm64/ftrace/minimal-regs
git checkout c694698df7f633bcbdf8bc0edb94f4a70ed0d092
# save the config file
mkdir build_dir && cp config build_dir/.config
make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@xxxxxxxxx>

All errors (new ones prefixed by >>):

In file included from include/linux/ftrace.h:23,
from include/linux/perf_event.h:51,
from include/linux/trace_events.h:10,
from include/trace/trace_events.h:21,
from include/trace/define_trace.h:102,
from include/trace/events/ext4.h:2941,
from fs/ext4/super.c:61:
arch/x86/include/asm/ftrace.h:45:57: warning: 'struct ftrace_regs' declared inside parameter list will not be visible outside of this definition or declaration
45 | static inline void arch_ftrace_set_direct_caller(struct ftrace_regs *fregs, unsigned long addr)
| ^~~~~~~~~~~
arch/x86/include/asm/ftrace.h: In function 'arch_ftrace_set_direct_caller':
>> arch/x86/include/asm/ftrace.h:47:32: error: implicit declaration of function 'ftrace_get_regs' [-Werror=implicit-function-declaration]
47 | struct pt_regs *regs = ftrace_get_regs(fregs);
| ^~~~~~~~~~~~~~~
arch/x86/include/asm/ftrace.h:47:32: warning: initialization of 'struct pt_regs *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
In file included from include/linux/perf_event.h:51,
from include/linux/trace_events.h:10,
from include/trace/trace_events.h:21,
from include/trace/define_trace.h:102,
from include/trace/events/ext4.h:2941,
from fs/ext4/super.c:61:
include/linux/ftrace.h: At top level:
>> include/linux/ftrace.h:121:40: error: conflicting types for 'ftrace_get_regs'; have 'struct pt_regs *(struct ftrace_regs *)'
121 | static __always_inline struct pt_regs *ftrace_get_regs(struct ftrace_regs *fregs)
| ^~~~~~~~~~~~~~~
In file included from include/linux/ftrace.h:23,
from include/linux/perf_event.h:51,
from include/linux/trace_events.h:10,
from include/trace/trace_events.h:21,
from include/trace/define_trace.h:102,
from include/trace/events/ext4.h:2941,
from fs/ext4/super.c:61:
arch/x86/include/asm/ftrace.h:47:32: note: previous implicit declaration of 'ftrace_get_regs' with type 'int()'
47 | struct pt_regs *regs = ftrace_get_regs(fregs);
| ^~~~~~~~~~~~~~~
cc1: some warnings being treated as errors
--
In file included from include/linux/ftrace.h:23,
from include/linux/perf_event.h:51,
from include/linux/nd.h:11,
from drivers/acpi/nfit/core.c:17:
arch/x86/include/asm/ftrace.h:45:57: warning: 'struct ftrace_regs' declared inside parameter list will not be visible outside of this definition or declaration
45 | static inline void arch_ftrace_set_direct_caller(struct ftrace_regs *fregs, unsigned long addr)
| ^~~~~~~~~~~
arch/x86/include/asm/ftrace.h: In function 'arch_ftrace_set_direct_caller':
>> arch/x86/include/asm/ftrace.h:47:32: error: implicit declaration of function 'ftrace_get_regs' [-Werror=implicit-function-declaration]
47 | struct pt_regs *regs = ftrace_get_regs(fregs);
| ^~~~~~~~~~~~~~~
arch/x86/include/asm/ftrace.h:47:32: warning: initialization of 'struct pt_regs *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
In file included from include/linux/perf_event.h:51,
from include/linux/nd.h:11,
from drivers/acpi/nfit/core.c:17:
include/linux/ftrace.h: At top level:
>> include/linux/ftrace.h:121:40: error: conflicting types for 'ftrace_get_regs'; have 'struct pt_regs *(struct ftrace_regs *)'
121 | static __always_inline struct pt_regs *ftrace_get_regs(struct ftrace_regs *fregs)
| ^~~~~~~~~~~~~~~
In file included from include/linux/ftrace.h:23,
from include/linux/perf_event.h:51,
from include/linux/nd.h:11,
from drivers/acpi/nfit/core.c:17:
arch/x86/include/asm/ftrace.h:47:32: note: previous implicit declaration of 'ftrace_get_regs' with type 'int()'
47 | struct pt_regs *regs = ftrace_get_regs(fregs);
| ^~~~~~~~~~~~~~~
drivers/acpi/nfit/core.c:1717:13: warning: no previous prototype for 'nfit_intel_shutdown_status' [-Wmissing-prototypes]
1717 | __weak void nfit_intel_shutdown_status(struct nfit_mem *nfit_mem)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~
cc1: some warnings being treated as errors
--
In file included from include/linux/ftrace.h:23,
from include/linux/perf_event.h:51,
from include/linux/nd.h:11,
from drivers/nvdimm/nd-core.h:11,
from drivers/nvdimm/dimm_devs.c:14:
arch/x86/include/asm/ftrace.h:45:57: warning: 'struct ftrace_regs' declared inside parameter list will not be visible outside of this definition or declaration
45 | static inline void arch_ftrace_set_direct_caller(struct ftrace_regs *fregs, unsigned long addr)
| ^~~~~~~~~~~
arch/x86/include/asm/ftrace.h: In function 'arch_ftrace_set_direct_caller':
>> arch/x86/include/asm/ftrace.h:47:32: error: implicit declaration of function 'ftrace_get_regs' [-Werror=implicit-function-declaration]
47 | struct pt_regs *regs = ftrace_get_regs(fregs);
| ^~~~~~~~~~~~~~~
arch/x86/include/asm/ftrace.h:47:32: warning: initialization of 'struct pt_regs *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
In file included from include/linux/perf_event.h:51,
from include/linux/nd.h:11,
from drivers/nvdimm/nd-core.h:11,
from drivers/nvdimm/dimm_devs.c:14:
include/linux/ftrace.h: At top level:
>> include/linux/ftrace.h:121:40: error: conflicting types for 'ftrace_get_regs'; have 'struct pt_regs *(struct ftrace_regs *)'
121 | static __always_inline struct pt_regs *ftrace_get_regs(struct ftrace_regs *fregs)
| ^~~~~~~~~~~~~~~
In file included from include/linux/ftrace.h:23,
from include/linux/perf_event.h:51,
from include/linux/nd.h:11,
from drivers/nvdimm/nd-core.h:11,
from drivers/nvdimm/dimm_devs.c:14:
arch/x86/include/asm/ftrace.h:47:32: note: previous implicit declaration of 'ftrace_get_regs' with type 'int()'
47 | struct pt_regs *regs = ftrace_get_regs(fregs);
| ^~~~~~~~~~~~~~~
drivers/nvdimm/dimm_devs.c:352:16: warning: no previous prototype for 'security_show' [-Wmissing-prototypes]
352 | __weak ssize_t security_show(struct device *dev,
| ^~~~~~~~~~~~~
cc1: some warnings being treated as errors
--
In file included from include/linux/ftrace.h:23,
from include/linux/perf_event.h:51,
from include/linux/trace_events.h:10,
from include/trace/syscall.h:7,
from include/linux/syscalls.h:88,
from include/linux/entry-common.h:7,
from arch/x86/entry/common.c:13:
arch/x86/include/asm/ftrace.h:45:57: warning: 'struct ftrace_regs' declared inside parameter list will not be visible outside of this definition or declaration
45 | static inline void arch_ftrace_set_direct_caller(struct ftrace_regs *fregs, unsigned long addr)
| ^~~~~~~~~~~
arch/x86/include/asm/ftrace.h: In function 'arch_ftrace_set_direct_caller':
>> arch/x86/include/asm/ftrace.h:47:32: error: implicit declaration of function 'ftrace_get_regs' [-Werror=implicit-function-declaration]
47 | struct pt_regs *regs = ftrace_get_regs(fregs);
| ^~~~~~~~~~~~~~~
arch/x86/include/asm/ftrace.h:47:32: warning: initialization of 'struct pt_regs *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
In file included from include/linux/perf_event.h:51,
from include/linux/trace_events.h:10,
from include/trace/syscall.h:7,
from include/linux/syscalls.h:88,
from include/linux/entry-common.h:7,
from arch/x86/entry/common.c:13:
include/linux/ftrace.h: At top level:
>> include/linux/ftrace.h:121:40: error: conflicting types for 'ftrace_get_regs'; have 'struct pt_regs *(struct ftrace_regs *)'
121 | static __always_inline struct pt_regs *ftrace_get_regs(struct ftrace_regs *fregs)
| ^~~~~~~~~~~~~~~
In file included from include/linux/ftrace.h:23,
from include/linux/perf_event.h:51,
from include/linux/trace_events.h:10,
from include/trace/syscall.h:7,
from include/linux/syscalls.h:88,
from include/linux/entry-common.h:7,
from arch/x86/entry/common.c:13:
arch/x86/include/asm/ftrace.h:47:32: note: previous implicit declaration of 'ftrace_get_regs' with type 'int()'
47 | struct pt_regs *regs = ftrace_get_regs(fregs);
| ^~~~~~~~~~~~~~~
arch/x86/entry/common.c:238:24: warning: no previous prototype for 'do_SYSENTER_32' [-Wmissing-prototypes]
238 | __visible noinstr long do_SYSENTER_32(struct pt_regs *regs)
| ^~~~~~~~~~~~~~
cc1: some warnings being treated as errors
--
In file included from arch/x86/mm/init_64.c:57:
arch/x86/include/asm/ftrace.h:45:57: warning: 'struct ftrace_regs' declared inside parameter list will not be visible outside of this definition or declaration
45 | static inline void arch_ftrace_set_direct_caller(struct ftrace_regs *fregs, unsigned long addr)
| ^~~~~~~~~~~
arch/x86/include/asm/ftrace.h: In function 'arch_ftrace_set_direct_caller':
>> arch/x86/include/asm/ftrace.h:47:32: error: implicit declaration of function 'ftrace_get_regs' [-Werror=implicit-function-declaration]
47 | struct pt_regs *regs = ftrace_get_regs(fregs);
| ^~~~~~~~~~~~~~~
arch/x86/include/asm/ftrace.h:47:32: warning: initialization of 'struct pt_regs *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
cc1: some warnings being treated as errors
--
In file included from include/linux/ftrace.h:23,
from kernel/kallsyms.c:26:
arch/x86/include/asm/ftrace.h:45:57: warning: 'struct ftrace_regs' declared inside parameter list will not be visible outside of this definition or declaration
45 | static inline void arch_ftrace_set_direct_caller(struct ftrace_regs *fregs, unsigned long addr)
| ^~~~~~~~~~~
arch/x86/include/asm/ftrace.h: In function 'arch_ftrace_set_direct_caller':
>> arch/x86/include/asm/ftrace.h:47:32: error: implicit declaration of function 'ftrace_get_regs' [-Werror=implicit-function-declaration]
47 | struct pt_regs *regs = ftrace_get_regs(fregs);
| ^~~~~~~~~~~~~~~
arch/x86/include/asm/ftrace.h:47:32: warning: initialization of 'struct pt_regs *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
In file included from kernel/kallsyms.c:26:
include/linux/ftrace.h: At top level:
>> include/linux/ftrace.h:121:40: error: conflicting types for 'ftrace_get_regs'; have 'struct pt_regs *(struct ftrace_regs *)'
121 | static __always_inline struct pt_regs *ftrace_get_regs(struct ftrace_regs *fregs)
| ^~~~~~~~~~~~~~~
In file included from include/linux/ftrace.h:23,
from kernel/kallsyms.c:26:
arch/x86/include/asm/ftrace.h:47:32: note: previous implicit declaration of 'ftrace_get_regs' with type 'int()'
47 | struct pt_regs *regs = ftrace_get_regs(fregs);
| ^~~~~~~~~~~~~~~
kernel/kallsyms.c:590:12: warning: no previous prototype for 'arch_get_kallsym' [-Wmissing-prototypes]
590 | int __weak arch_get_kallsym(unsigned int symnum, unsigned long *value,
| ^~~~~~~~~~~~~~~~
cc1: some warnings being treated as errors
--
In file included from include/linux/ftrace.h:23,
from include/linux/perf_event.h:51,
from include/linux/trace_events.h:10,
from include/trace/syscall.h:7,
from include/linux/syscalls.h:88,
from kernel/audit.c:44:
arch/x86/include/asm/ftrace.h:45:57: warning: 'struct ftrace_regs' declared inside parameter list will not be visible outside of this definition or declaration
45 | static inline void arch_ftrace_set_direct_caller(struct ftrace_regs *fregs, unsigned long addr)
| ^~~~~~~~~~~
arch/x86/include/asm/ftrace.h: In function 'arch_ftrace_set_direct_caller':
>> arch/x86/include/asm/ftrace.h:47:32: error: implicit declaration of function 'ftrace_get_regs' [-Werror=implicit-function-declaration]
47 | struct pt_regs *regs = ftrace_get_regs(fregs);
| ^~~~~~~~~~~~~~~
arch/x86/include/asm/ftrace.h:47:32: warning: initialization of 'struct pt_regs *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
In file included from include/linux/perf_event.h:51,
from include/linux/trace_events.h:10,
from include/trace/syscall.h:7,
from include/linux/syscalls.h:88,
from kernel/audit.c:44:
include/linux/ftrace.h: At top level:
>> include/linux/ftrace.h:121:40: error: conflicting types for 'ftrace_get_regs'; have 'struct pt_regs *(struct ftrace_regs *)'
121 | static __always_inline struct pt_regs *ftrace_get_regs(struct ftrace_regs *fregs)
| ^~~~~~~~~~~~~~~
In file included from include/linux/ftrace.h:23,
from include/linux/perf_event.h:51,
from include/linux/trace_events.h:10,
from include/trace/syscall.h:7,
from include/linux/syscalls.h:88,
from kernel/audit.c:44:
arch/x86/include/asm/ftrace.h:47:32: note: previous implicit declaration of 'ftrace_get_regs' with type 'int()'
47 | struct pt_regs *regs = ftrace_get_regs(fregs);
| ^~~~~~~~~~~~~~~
kernel/audit.c: In function 'audit_log_vformat':
kernel/audit.c:1965:9: warning: function 'audit_log_vformat' might be a candidate for 'gnu_printf' format attribute [-Wsuggest-attribute=format]
1965 | len = vsnprintf(skb_tail_pointer(skb), avail, fmt, args);
| ^~~
kernel/audit.c:1974:17: warning: function 'audit_log_vformat' might be a candidate for 'gnu_printf' format attribute [-Wsuggest-attribute=format]
1974 | len = vsnprintf(skb_tail_pointer(skb), avail, fmt, args2);
| ^~~
cc1: some warnings being treated as errors
--
In file included from include/linux/ftrace.h:23,
from include/linux/kprobes.h:28,
from include/linux/kgdb.h:19,
from kernel/panic.c:15:
arch/x86/include/asm/ftrace.h:45:57: warning: 'struct ftrace_regs' declared inside parameter list will not be visible outside of this definition or declaration
45 | static inline void arch_ftrace_set_direct_caller(struct ftrace_regs *fregs, unsigned long addr)
| ^~~~~~~~~~~
arch/x86/include/asm/ftrace.h: In function 'arch_ftrace_set_direct_caller':
>> arch/x86/include/asm/ftrace.h:47:32: error: implicit declaration of function 'ftrace_get_regs' [-Werror=implicit-function-declaration]
47 | struct pt_regs *regs = ftrace_get_regs(fregs);
| ^~~~~~~~~~~~~~~
arch/x86/include/asm/ftrace.h:47:32: warning: initialization of 'struct pt_regs *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
In file included from include/linux/kprobes.h:28,
from include/linux/kgdb.h:19,
from kernel/panic.c:15:
include/linux/ftrace.h: At top level:
>> include/linux/ftrace.h:121:40: error: conflicting types for 'ftrace_get_regs'; have 'struct pt_regs *(struct ftrace_regs *)'
121 | static __always_inline struct pt_regs *ftrace_get_regs(struct ftrace_regs *fregs)
| ^~~~~~~~~~~~~~~
In file included from include/linux/ftrace.h:23,
from include/linux/kprobes.h:28,
from include/linux/kgdb.h:19,
from kernel/panic.c:15:
arch/x86/include/asm/ftrace.h:47:32: note: previous implicit declaration of 'ftrace_get_regs' with type 'int()'
47 | struct pt_regs *regs = ftrace_get_regs(fregs);
| ^~~~~~~~~~~~~~~
kernel/panic.c: In function '__warn':
kernel/panic.c:617:17: warning: function '__warn' might be a candidate for 'gnu_printf' format attribute [-Wsuggest-attribute=format]
617 | vprintk(args->fmt, args->args);
| ^~~~~~~
kernel/panic.c: At top level:
kernel/panic.c:706:24: warning: no previous prototype for '__stack_chk_fail' [-Wmissing-prototypes]
706 | __visible noinstr void __stack_chk_fail(void)
| ^~~~~~~~~~~~~~~~
cc1: some warnings being treated as errors
--
In file included from include/linux/ftrace.h:23,
from include/linux/perf_event.h:51,
from include/linux/trace_events.h:10,
from include/trace/syscall.h:7,
from include/linux/syscalls.h:88,
from kernel/exit.c:42:
arch/x86/include/asm/ftrace.h:45:57: warning: 'struct ftrace_regs' declared inside parameter list will not be visible outside of this definition or declaration
45 | static inline void arch_ftrace_set_direct_caller(struct ftrace_regs *fregs, unsigned long addr)
| ^~~~~~~~~~~
arch/x86/include/asm/ftrace.h: In function 'arch_ftrace_set_direct_caller':
>> arch/x86/include/asm/ftrace.h:47:32: error: implicit declaration of function 'ftrace_get_regs' [-Werror=implicit-function-declaration]
47 | struct pt_regs *regs = ftrace_get_regs(fregs);
| ^~~~~~~~~~~~~~~
arch/x86/include/asm/ftrace.h:47:32: warning: initialization of 'struct pt_regs *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
In file included from include/linux/perf_event.h:51,
from include/linux/trace_events.h:10,
from include/trace/syscall.h:7,
from include/linux/syscalls.h:88,
from kernel/exit.c:42:
include/linux/ftrace.h: At top level:
>> include/linux/ftrace.h:121:40: error: conflicting types for 'ftrace_get_regs'; have 'struct pt_regs *(struct ftrace_regs *)'
121 | static __always_inline struct pt_regs *ftrace_get_regs(struct ftrace_regs *fregs)
| ^~~~~~~~~~~~~~~
In file included from include/linux/ftrace.h:23,
from include/linux/perf_event.h:51,
from include/linux/trace_events.h:10,
from include/trace/syscall.h:7,
from include/linux/syscalls.h:88,
from kernel/exit.c:42:
arch/x86/include/asm/ftrace.h:47:32: note: previous implicit declaration of 'ftrace_get_regs' with type 'int()'
47 | struct pt_regs *regs = ftrace_get_regs(fregs);
| ^~~~~~~~~~~~~~~
kernel/exit.c:1814:13: warning: no previous prototype for 'abort' [-Wmissing-prototypes]
1814 | __weak void abort(void)
| ^~~~~
cc1: some warnings being treated as errors
--
In file included from include/linux/ftrace.h:23,
from kernel/trace/ftrace.c:29:
arch/x86/include/asm/ftrace.h:45:57: warning: 'struct ftrace_regs' declared inside parameter list will not be visible outside of this definition or declaration
45 | static inline void arch_ftrace_set_direct_caller(struct ftrace_regs *fregs, unsigned long addr)
| ^~~~~~~~~~~
arch/x86/include/asm/ftrace.h: In function 'arch_ftrace_set_direct_caller':
>> arch/x86/include/asm/ftrace.h:47:32: error: implicit declaration of function 'ftrace_get_regs' [-Werror=implicit-function-declaration]
47 | struct pt_regs *regs = ftrace_get_regs(fregs);
| ^~~~~~~~~~~~~~~
arch/x86/include/asm/ftrace.h:47:32: warning: initialization of 'struct pt_regs *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
In file included from kernel/trace/ftrace.c:29:
include/linux/ftrace.h: At top level:
>> include/linux/ftrace.h:121:40: error: conflicting types for 'ftrace_get_regs'; have 'struct pt_regs *(struct ftrace_regs *)'
121 | static __always_inline struct pt_regs *ftrace_get_regs(struct ftrace_regs *fregs)
| ^~~~~~~~~~~~~~~
In file included from include/linux/ftrace.h:23,
from kernel/trace/ftrace.c:29:
arch/x86/include/asm/ftrace.h:47:32: note: previous implicit declaration of 'ftrace_get_regs' with type 'int()'
47 | struct pt_regs *regs = ftrace_get_regs(fregs);
| ^~~~~~~~~~~~~~~
kernel/trace/ftrace.c:299:5: warning: no previous prototype for '__register_ftrace_function' [-Wmissing-prototypes]
299 | int __register_ftrace_function(struct ftrace_ops *ops)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~
kernel/trace/ftrace.c:342:5: warning: no previous prototype for '__unregister_ftrace_function' [-Wmissing-prototypes]
342 | int __unregister_ftrace_function(struct ftrace_ops *ops)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
kernel/trace/ftrace.c: In function 'call_direct_funcs':
>> kernel/trace/ftrace.c:2451:39: error: passing argument 1 of 'arch_ftrace_set_direct_caller' from incompatible pointer type [-Werror=incompatible-pointer-types]
2451 | arch_ftrace_set_direct_caller(fregs, addr);
| ^~~~~
| |
| struct ftrace_regs *
In file included from include/linux/ftrace.h:23,
from kernel/trace/ftrace.c:29:
arch/x86/include/asm/ftrace.h:45:70: note: expected 'struct ftrace_regs *' but argument is of type 'struct ftrace_regs *'
45 | static inline void arch_ftrace_set_direct_caller(struct ftrace_regs *fregs, unsigned long addr)
| ~~~~~~~~~~~~~~~~~~~~^~~~~
kernel/trace/ftrace.c: At top level:
kernel/trace/ftrace.c:3983:15: warning: no previous prototype for 'arch_ftrace_match_adjust' [-Wmissing-prototypes]
3983 | char * __weak arch_ftrace_match_adjust(char *str, const char *search)
| ^~~~~~~~~~~~~~~~~~~~~~~~
cc1: some warnings being treated as errors
..

vim +/ftrace_get_regs +47 arch/x86/include/asm/ftrace.h

37
38 /*
39 * When a ftrace registered caller is tracing a function that is
40 * also set by a register_ftrace_direct() call, it needs to be
41 * differentiated in the ftrace_caller trampoline. To do this, we
42 * place the direct caller in the ORIG_AX part of pt_regs. This
43 * tells the ftrace_caller that there's a direct caller.
44 */
> 45 static inline void arch_ftrace_set_direct_caller(struct ftrace_regs *fregs, unsigned long addr)
46 {
> 47 struct pt_regs *regs = ftrace_get_regs(fregs);
48
49 /* Emulate a call */
50 regs->orig_ax = addr;
51 }
52

--
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https://01.org/lkp

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