[05/16] ARM: kprobes: avoid missing-declaration warnings
Commit Message
From: Arnd Bergmann <arnd@arndb.de>
checker_stack_use_t32strd() and kprobe_handler() can be made static since
they are not used from other files, while coverage_start_registers()
and __kprobes_test_case() are used from assembler code, and just need
a declaration to avoid a warning with the global definition.
arch/arm/probes/kprobes/checkers-common.c:43:18: error: no previous prototype for 'checker_stack_use_t32strd'
arch/arm/probes/kprobes/core.c:236:16: error: no previous prototype for 'kprobe_handler'
arch/arm/probes/kprobes/test-core.c:723:10: error: no previous prototype for 'coverage_start_registers'
arch/arm/probes/kprobes/test-core.c:918:14: error: no previous prototype for '__kprobes_test_case_start'
arch/arm/probes/kprobes/test-core.c:952:14: error: no previous prototype for '__kprobes_test_case_end_16'
arch/arm/probes/kprobes/test-core.c:967:14: error: no previous prototype for '__kprobes_test_case_end_32'
Fixes: 6624cf651f1a ("ARM: kprobes: collects stack consumption for store instructions")
Fixes: 454f3e132d05 ("ARM/kprobes: Remove jprobe arm implementation")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
arch/arm/probes/kprobes/checkers-common.c | 2 +-
arch/arm/probes/kprobes/core.c | 2 +-
arch/arm/probes/kprobes/opt-arm.c | 2 --
arch/arm/probes/kprobes/test-core.c | 2 +-
arch/arm/probes/kprobes/test-core.h | 4 ++++
5 files changed, 7 insertions(+), 5 deletions(-)
Comments
On Tue, 16 May 2023 17:45:54 +0200
Arnd Bergmann <arnd@kernel.org> wrote:
> From: Arnd Bergmann <arnd@arndb.de>
>
> checker_stack_use_t32strd() and kprobe_handler() can be made static since
> they are not used from other files, while coverage_start_registers()
> and __kprobes_test_case() are used from assembler code, and just need
> a declaration to avoid a warning with the global definition.
>
> arch/arm/probes/kprobes/checkers-common.c:43:18: error: no previous prototype for 'checker_stack_use_t32strd'
> arch/arm/probes/kprobes/core.c:236:16: error: no previous prototype for 'kprobe_handler'
> arch/arm/probes/kprobes/test-core.c:723:10: error: no previous prototype for 'coverage_start_registers'
> arch/arm/probes/kprobes/test-core.c:918:14: error: no previous prototype for '__kprobes_test_case_start'
> arch/arm/probes/kprobes/test-core.c:952:14: error: no previous prototype for '__kprobes_test_case_end_16'
> arch/arm/probes/kprobes/test-core.c:967:14: error: no previous prototype for '__kprobes_test_case_end_32'
>
> Fixes: 6624cf651f1a ("ARM: kprobes: collects stack consumption for store instructions")
> Fixes: 454f3e132d05 ("ARM/kprobes: Remove jprobe arm implementation")
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Thank you for fixing warnings!
Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
> ---
> arch/arm/probes/kprobes/checkers-common.c | 2 +-
> arch/arm/probes/kprobes/core.c | 2 +-
> arch/arm/probes/kprobes/opt-arm.c | 2 --
> arch/arm/probes/kprobes/test-core.c | 2 +-
> arch/arm/probes/kprobes/test-core.h | 4 ++++
> 5 files changed, 7 insertions(+), 5 deletions(-)
>
> diff --git a/arch/arm/probes/kprobes/checkers-common.c b/arch/arm/probes/kprobes/checkers-common.c
> index 4d720990cf2a..eba7ac4725c0 100644
> --- a/arch/arm/probes/kprobes/checkers-common.c
> +++ b/arch/arm/probes/kprobes/checkers-common.c
> @@ -40,7 +40,7 @@ enum probes_insn checker_stack_use_imm_0xx(probes_opcode_t insn,
> * Different from other insn uses imm8, the real addressing offset of
> * STRD in T32 encoding should be imm8 * 4. See ARMARM description.
> */
> -enum probes_insn checker_stack_use_t32strd(probes_opcode_t insn,
> +static enum probes_insn checker_stack_use_t32strd(probes_opcode_t insn,
> struct arch_probes_insn *asi,
> const struct decode_header *h)
> {
> diff --git a/arch/arm/probes/kprobes/core.c b/arch/arm/probes/kprobes/core.c
> index 88999ed2cfc4..3ee0e3024ff0 100644
> --- a/arch/arm/probes/kprobes/core.c
> +++ b/arch/arm/probes/kprobes/core.c
> @@ -233,7 +233,7 @@ singlestep(struct kprobe *p, struct pt_regs *regs, struct kprobe_ctlblk *kcb)
> * kprobe, and that level is reserved for user kprobe handlers, so we can't
> * risk encountering a new kprobe in an interrupt handler.
> */
> -void __kprobes kprobe_handler(struct pt_regs *regs)
> +static void __kprobes kprobe_handler(struct pt_regs *regs)
> {
> struct kprobe *p, *cur;
> struct kprobe_ctlblk *kcb;
> diff --git a/arch/arm/probes/kprobes/opt-arm.c b/arch/arm/probes/kprobes/opt-arm.c
> index dbef34ed933f..7f65048380ca 100644
> --- a/arch/arm/probes/kprobes/opt-arm.c
> +++ b/arch/arm/probes/kprobes/opt-arm.c
> @@ -145,8 +145,6 @@ __arch_remove_optimized_kprobe(struct optimized_kprobe *op, int dirty)
> }
> }
>
> -extern void kprobe_handler(struct pt_regs *regs);
> -
> static void
> optimized_callback(struct optimized_kprobe *op, struct pt_regs *regs)
> {
> diff --git a/arch/arm/probes/kprobes/test-core.c b/arch/arm/probes/kprobes/test-core.c
> index c562832b8627..171c7076b89f 100644
> --- a/arch/arm/probes/kprobes/test-core.c
> +++ b/arch/arm/probes/kprobes/test-core.c
> @@ -720,7 +720,7 @@ static const char coverage_register_lookup[16] = {
> [REG_TYPE_NOSPPCX] = COVERAGE_ANY_REG | COVERAGE_SP,
> };
>
> -unsigned coverage_start_registers(const struct decode_header *h)
> +static unsigned coverage_start_registers(const struct decode_header *h)
> {
> unsigned regs = 0;
> int i;
> diff --git a/arch/arm/probes/kprobes/test-core.h b/arch/arm/probes/kprobes/test-core.h
> index 56ad3c0aaeea..c7297037c162 100644
> --- a/arch/arm/probes/kprobes/test-core.h
> +++ b/arch/arm/probes/kprobes/test-core.h
> @@ -454,3 +454,7 @@ void kprobe_thumb32_test_cases(void);
> #else
> void kprobe_arm_test_cases(void);
> #endif
> +
> +void __kprobes_test_case_start(void);
> +void __kprobes_test_case_end_16(void);
> +void __kprobes_test_case_end_32(void);
> --
> 2.39.2
>
@@ -40,7 +40,7 @@ enum probes_insn checker_stack_use_imm_0xx(probes_opcode_t insn,
* Different from other insn uses imm8, the real addressing offset of
* STRD in T32 encoding should be imm8 * 4. See ARMARM description.
*/
-enum probes_insn checker_stack_use_t32strd(probes_opcode_t insn,
+static enum probes_insn checker_stack_use_t32strd(probes_opcode_t insn,
struct arch_probes_insn *asi,
const struct decode_header *h)
{
@@ -233,7 +233,7 @@ singlestep(struct kprobe *p, struct pt_regs *regs, struct kprobe_ctlblk *kcb)
* kprobe, and that level is reserved for user kprobe handlers, so we can't
* risk encountering a new kprobe in an interrupt handler.
*/
-void __kprobes kprobe_handler(struct pt_regs *regs)
+static void __kprobes kprobe_handler(struct pt_regs *regs)
{
struct kprobe *p, *cur;
struct kprobe_ctlblk *kcb;
@@ -145,8 +145,6 @@ __arch_remove_optimized_kprobe(struct optimized_kprobe *op, int dirty)
}
}
-extern void kprobe_handler(struct pt_regs *regs);
-
static void
optimized_callback(struct optimized_kprobe *op, struct pt_regs *regs)
{
@@ -720,7 +720,7 @@ static const char coverage_register_lookup[16] = {
[REG_TYPE_NOSPPCX] = COVERAGE_ANY_REG | COVERAGE_SP,
};
-unsigned coverage_start_registers(const struct decode_header *h)
+static unsigned coverage_start_registers(const struct decode_header *h)
{
unsigned regs = 0;
int i;
@@ -454,3 +454,7 @@ void kprobe_thumb32_test_cases(void);
#else
void kprobe_arm_test_cases(void);
#endif
+
+void __kprobes_test_case_start(void);
+void __kprobes_test_case_end_16(void);
+void __kprobes_test_case_end_32(void);