kbuild test robot reported few build warnings with hw_breakpoint code
when compiled with clang[1]. Fix those.
[1]: https://lore.kernel.org/linuxppc-dev/202005192233.oi9CjRtA%[email protected]/
Reported-by: kbuild test robot <[email protected]>
Signed-off-by: Ravi Bangoria <[email protected]>
---
Note: Prepared on top of powerpc/next.
arch/powerpc/include/asm/hw_breakpoint.h | 3 ---
include/linux/hw_breakpoint.h | 4 ++++
2 files changed, 4 insertions(+), 3 deletions(-)
diff --git a/arch/powerpc/include/asm/hw_breakpoint.h b/arch/powerpc/include/asm/hw_breakpoint.h
index f42a55eb77d2..cb424799da0d 100644
--- a/arch/powerpc/include/asm/hw_breakpoint.h
+++ b/arch/powerpc/include/asm/hw_breakpoint.h
@@ -70,9 +70,6 @@ extern int hw_breakpoint_exceptions_notify(struct notifier_block *unused,
unsigned long val, void *data);
int arch_install_hw_breakpoint(struct perf_event *bp);
void arch_uninstall_hw_breakpoint(struct perf_event *bp);
-int arch_reserve_bp_slot(struct perf_event *bp);
-void arch_release_bp_slot(struct perf_event *bp);
-void arch_unregister_hw_breakpoint(struct perf_event *bp);
void hw_breakpoint_pmu_read(struct perf_event *bp);
extern void flush_ptrace_hw_breakpoint(struct task_struct *tsk);
diff --git a/include/linux/hw_breakpoint.h b/include/linux/hw_breakpoint.h
index 6058c3844a76..521481f0d320 100644
--- a/include/linux/hw_breakpoint.h
+++ b/include/linux/hw_breakpoint.h
@@ -80,6 +80,10 @@ extern int dbg_reserve_bp_slot(struct perf_event *bp);
extern int dbg_release_bp_slot(struct perf_event *bp);
extern int reserve_bp_slot(struct perf_event *bp);
extern void release_bp_slot(struct perf_event *bp);
+extern int hw_breakpoint_weight(struct perf_event *bp);
+extern int arch_reserve_bp_slot(struct perf_event *bp);
+extern void arch_release_bp_slot(struct perf_event *bp);
+extern void arch_unregister_hw_breakpoint(struct perf_event *bp);
extern void flush_ptrace_hw_breakpoint(struct task_struct *tsk);
--
2.26.2
Le 02/06/2020 à 06:12, Ravi Bangoria a écrit :
> kbuild test robot reported few build warnings with hw_breakpoint code
> when compiled with clang[1]. Fix those.
>
> [1]: https://lore.kernel.org/linuxppc-dev/202005192233.oi9CjRtA%[email protected]/
>
> Reported-by: kbuild test robot <[email protected]>
> Signed-off-by: Ravi Bangoria <[email protected]>
> ---
> Note: Prepared on top of powerpc/next.
>
> arch/powerpc/include/asm/hw_breakpoint.h | 3 ---
> include/linux/hw_breakpoint.h | 4 ++++
> 2 files changed, 4 insertions(+), 3 deletions(-)
>
> diff --git a/arch/powerpc/include/asm/hw_breakpoint.h b/arch/powerpc/include/asm/hw_breakpoint.h
> index f42a55eb77d2..cb424799da0d 100644
> --- a/arch/powerpc/include/asm/hw_breakpoint.h
> +++ b/arch/powerpc/include/asm/hw_breakpoint.h
> @@ -70,9 +70,6 @@ extern int hw_breakpoint_exceptions_notify(struct notifier_block *unused,
> unsigned long val, void *data);
> int arch_install_hw_breakpoint(struct perf_event *bp);
> void arch_uninstall_hw_breakpoint(struct perf_event *bp);
> -int arch_reserve_bp_slot(struct perf_event *bp);
> -void arch_release_bp_slot(struct perf_event *bp);
> -void arch_unregister_hw_breakpoint(struct perf_event *bp);
> void hw_breakpoint_pmu_read(struct perf_event *bp);
> extern void flush_ptrace_hw_breakpoint(struct task_struct *tsk);
>
> diff --git a/include/linux/hw_breakpoint.h b/include/linux/hw_breakpoint.h
> index 6058c3844a76..521481f0d320 100644
> --- a/include/linux/hw_breakpoint.h
> +++ b/include/linux/hw_breakpoint.h
> @@ -80,6 +80,10 @@ extern int dbg_reserve_bp_slot(struct perf_event *bp);
> extern int dbg_release_bp_slot(struct perf_event *bp);
> extern int reserve_bp_slot(struct perf_event *bp);
> extern void release_bp_slot(struct perf_event *bp);
> +extern int hw_breakpoint_weight(struct perf_event *bp);
> +extern int arch_reserve_bp_slot(struct perf_event *bp);
> +extern void arch_release_bp_slot(struct perf_event *bp);
> +extern void arch_unregister_hw_breakpoint(struct perf_event *bp);
Please no new 'extern'. In the old days 'extern' keyword was used, but
new code shall not introduce new unnecessary usage of 'extern' keyword.
See report from Checkpatch below:
WARNING:COMMIT_LOG_LONG_LINE: Possible unwrapped commit description
(prefer a maximum 75 chars per line)
#9:
[1]:
https://lore.kernel.org/linuxppc-dev/202005192233.oi9CjRtA%[email protected]/
CHECK:AVOID_EXTERNS: extern prototypes should be avoided in .h files
#40: FILE: include/linux/hw_breakpoint.h:83:
+extern int hw_breakpoint_weight(struct perf_event *bp);
CHECK:AVOID_EXTERNS: extern prototypes should be avoided in .h files
#41: FILE: include/linux/hw_breakpoint.h:84:
+extern int arch_reserve_bp_slot(struct perf_event *bp);
CHECK:AVOID_EXTERNS: extern prototypes should be avoided in .h files
#42: FILE: include/linux/hw_breakpoint.h:85:
+extern void arch_release_bp_slot(struct perf_event *bp);
CHECK:AVOID_EXTERNS: extern prototypes should be avoided in .h files
#43: FILE: include/linux/hw_breakpoint.h:86:
+extern void arch_unregister_hw_breakpoint(struct perf_event *bp);
total: 0 errors, 1 warnings, 4 checks, 19 lines checked
NOTE: For some of the reported defects, checkpatch may be able to
mechanically convert to the typical style using --fix or
--fix-inplace.
the.patch has style problems, please review.
NOTE: Ignored message types: ARCH_INCLUDE_LINUX BIT_MACRO
COMPARISON_TO_NULL DT_SPLIT_BINDING_PATCH EMAIL_SUBJECT
FILE_PATH_CHANGES GLOBAL_INITIALISERS LINE_SPACING MULTIPLE_ASSIGNMENTS
NOTE: If any of the errors are false positives, please report
them to the maintainer, see CHECKPATCH in MAINTAINERS.
Christophe
Christophe Leroy <[email protected]> writes:
> Le 02/06/2020 à 06:12, Ravi Bangoria a écrit :
>> kbuild test robot reported few build warnings with hw_breakpoint code
>> when compiled with clang[1]. Fix those.
>>
>> [1]: https://lore.kernel.org/linuxppc-dev/202005192233.oi9CjRtA%[email protected]/
>>
This should have mentioned that some of the errors were recently
introduced by your commit.
>> Reported-by: kbuild test robot <[email protected]>
>> Signed-off-by: Ravi Bangoria <[email protected]>
>> ---
>> Note: Prepared on top of powerpc/next.
>>
>> arch/powerpc/include/asm/hw_breakpoint.h | 3 ---
>> include/linux/hw_breakpoint.h | 4 ++++
>> 2 files changed, 4 insertions(+), 3 deletions(-)
>>
>> diff --git a/arch/powerpc/include/asm/hw_breakpoint.h b/arch/powerpc/include/asm/hw_breakpoint.h
>> index f42a55eb77d2..cb424799da0d 100644
>> --- a/arch/powerpc/include/asm/hw_breakpoint.h
>> +++ b/arch/powerpc/include/asm/hw_breakpoint.h
>> @@ -70,9 +70,6 @@ extern int hw_breakpoint_exceptions_notify(struct notifier_block *unused,
>> unsigned long val, void *data);
>> int arch_install_hw_breakpoint(struct perf_event *bp);
>> void arch_uninstall_hw_breakpoint(struct perf_event *bp);
>> -int arch_reserve_bp_slot(struct perf_event *bp);
>> -void arch_release_bp_slot(struct perf_event *bp);
>> -void arch_unregister_hw_breakpoint(struct perf_event *bp);
>> void hw_breakpoint_pmu_read(struct perf_event *bp);
>> extern void flush_ptrace_hw_breakpoint(struct task_struct *tsk);
>>
>> diff --git a/include/linux/hw_breakpoint.h b/include/linux/hw_breakpoint.h
>> index 6058c3844a76..521481f0d320 100644
>> --- a/include/linux/hw_breakpoint.h
>> +++ b/include/linux/hw_breakpoint.h
>> @@ -80,6 +80,10 @@ extern int dbg_reserve_bp_slot(struct perf_event *bp);
>> extern int dbg_release_bp_slot(struct perf_event *bp);
>> extern int reserve_bp_slot(struct perf_event *bp);
>> extern void release_bp_slot(struct perf_event *bp);
>> +extern int hw_breakpoint_weight(struct perf_event *bp);
>> +extern int arch_reserve_bp_slot(struct perf_event *bp);
>> +extern void arch_release_bp_slot(struct perf_event *bp);
>> +extern void arch_unregister_hw_breakpoint(struct perf_event *bp);
>
> Please no new 'extern'. In the old days 'extern' keyword was used, but
> new code shall not introduce new unnecessary usage of 'extern' keyword.
> See report from Checkpatch below:
>
> WARNING:COMMIT_LOG_LONG_LINE: Possible unwrapped commit description
> (prefer a maximum 75 chars per line)
> #9:
> [1]:
> https://lore.kernel.org/linuxppc-dev/202005192233.oi9CjRtA%[email protected]/
>
> CHECK:AVOID_EXTERNS: extern prototypes should be avoided in .h files
> #40: FILE: include/linux/hw_breakpoint.h:83:
> +extern int hw_breakpoint_weight(struct perf_event *bp);
I fixed it up when applying.
cheers
On 6/2/20 4:30 PM, Michael Ellerman wrote:
> Christophe Leroy <[email protected]> writes:
>> Le 02/06/2020 à 06:12, Ravi Bangoria a écrit :
>>> kbuild test robot reported few build warnings with hw_breakpoint code
>>> when compiled with clang[1]. Fix those.
>>>
>>> [1]: https://lore.kernel.org/linuxppc-dev/202005192233.oi9CjRtA%[email protected]/
>>>
>
> This should have mentioned that some of the errors were recently
> introduced by your commit.
Sure, will take care next time.
>
>>> Reported-by: kbuild test robot <[email protected]>
>>> Signed-off-by: Ravi Bangoria <[email protected]>
>>> ---
>>> Note: Prepared on top of powerpc/next.
>>>
>>> arch/powerpc/include/asm/hw_breakpoint.h | 3 ---
>>> include/linux/hw_breakpoint.h | 4 ++++
>>> 2 files changed, 4 insertions(+), 3 deletions(-)
>>>
>>> diff --git a/arch/powerpc/include/asm/hw_breakpoint.h b/arch/powerpc/include/asm/hw_breakpoint.h
>>> index f42a55eb77d2..cb424799da0d 100644
>>> --- a/arch/powerpc/include/asm/hw_breakpoint.h
>>> +++ b/arch/powerpc/include/asm/hw_breakpoint.h
>>> @@ -70,9 +70,6 @@ extern int hw_breakpoint_exceptions_notify(struct notifier_block *unused,
>>> unsigned long val, void *data);
>>> int arch_install_hw_breakpoint(struct perf_event *bp);
>>> void arch_uninstall_hw_breakpoint(struct perf_event *bp);
>>> -int arch_reserve_bp_slot(struct perf_event *bp);
>>> -void arch_release_bp_slot(struct perf_event *bp);
>>> -void arch_unregister_hw_breakpoint(struct perf_event *bp);
>>> void hw_breakpoint_pmu_read(struct perf_event *bp);
>>> extern void flush_ptrace_hw_breakpoint(struct task_struct *tsk);
>>>
>>> diff --git a/include/linux/hw_breakpoint.h b/include/linux/hw_breakpoint.h
>>> index 6058c3844a76..521481f0d320 100644
>>> --- a/include/linux/hw_breakpoint.h
>>> +++ b/include/linux/hw_breakpoint.h
>>> @@ -80,6 +80,10 @@ extern int dbg_reserve_bp_slot(struct perf_event *bp);
>>> extern int dbg_release_bp_slot(struct perf_event *bp);
>>> extern int reserve_bp_slot(struct perf_event *bp);
>>> extern void release_bp_slot(struct perf_event *bp);
>>> +extern int hw_breakpoint_weight(struct perf_event *bp);
>>> +extern int arch_reserve_bp_slot(struct perf_event *bp);
>>> +extern void arch_release_bp_slot(struct perf_event *bp);
>>> +extern void arch_unregister_hw_breakpoint(struct perf_event *bp);
>>
>> Please no new 'extern'. In the old days 'extern' keyword was used, but
>> new code shall not introduce new unnecessary usage of 'extern' keyword.
>> See report from Checkpatch below:
>>
>> WARNING:COMMIT_LOG_LONG_LINE: Possible unwrapped commit description
>> (prefer a maximum 75 chars per line)
>> #9:
>> [1]:
>> https://lore.kernel.org/linuxppc-dev/202005192233.oi9CjRtA%[email protected]/
>>
>> CHECK:AVOID_EXTERNS: extern prototypes should be avoided in .h files
>> #40: FILE: include/linux/hw_breakpoint.h:83:
>> +extern int hw_breakpoint_weight(struct perf_event *bp);
>
> I fixed it up when applying.
Thanks Michael.
Ravi
On Tue, 2 Jun 2020 09:42:08 +0530, Ravi Bangoria wrote:
> kbuild test robot reported few build warnings with hw_breakpoint code
> when compiled with clang[1]. Fix those.
>
> [1]: https://lore.kernel.org/linuxppc-dev/202005192233.oi9CjRtA%[email protected]/
Applied to powerpc/next.
[1/1] hw-breakpoints: Fix build warnings with clang
https://git.kernel.org/powerpc/c/ef3534a94fdbdeab4c89d18d0164be2ad5d6dbb7
cheers