| Message ID | 20200421013511.5960-1-walter-zh.wu@mediatek.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [v2] stacktrace: cleanup inconsistent variable type | expand |
On 4/20/20 6:35 PM, Walter Wu wrote: > Modify the variable type of 'skip' member of struct stack_trace. > In theory, the 'skip' variable type should be unsigned int. > There are two reasons: > - The 'skip' only has two situation, 1)Positive value, 2)Zero > - The 'skip' of struct stack_trace has inconsistent type with struct > stack_trace_data, it makes a bit confusion in the relationship between > struct stack_trace and stack_trace_data. Reviewed-by: Bart Van Assche <bvanassche@acm.org>
On Wed, 2020-04-22 at 18:21 -0700, Bart Van Assche wrote: > On 4/20/20 6:35 PM, Walter Wu wrote: > > Modify the variable type of 'skip' member of struct stack_trace. > > In theory, the 'skip' variable type should be unsigned int. > > There are two reasons: > > - The 'skip' only has two situation, 1)Positive value, 2)Zero > > - The 'skip' of struct stack_trace has inconsistent type with struct > > stack_trace_data, it makes a bit confusion in the relationship between > > struct stack_trace and stack_trace_data. > > Reviewed-by: Bart Van Assche <bvanassche@acm.org> Hi Andrew, Would you know why not to be picked up this patch yet? Do I miss somethings? Thank you for your help. Walter
On Wed, 6 May 2020 10:18:24 +0800 Walter Wu <walter-zh.wu@mediatek.com> wrote: > On Wed, 2020-04-22 at 18:21 -0700, Bart Van Assche wrote: > > On 4/20/20 6:35 PM, Walter Wu wrote: > > > Modify the variable type of 'skip' member of struct stack_trace. > > > In theory, the 'skip' variable type should be unsigned int. > > > There are two reasons: > > > - The 'skip' only has two situation, 1)Positive value, 2)Zero > > > - The 'skip' of struct stack_trace has inconsistent type with struct > > > stack_trace_data, it makes a bit confusion in the relationship between > > > struct stack_trace and stack_trace_data. > > > > Reviewed-by: Bart Van Assche <bvanassche@acm.org> > > Hi Andrew, > > Would you know why not to be picked up this patch yet? > Do I miss somethings? I'd decided to pass on this because it's so minor. We inappropriately use signed types in soooo many places :(
diff --git a/include/linux/stacktrace.h b/include/linux/stacktrace.h index 83bd8cb475d7..b7af8cc13eda 100644 --- a/include/linux/stacktrace.h +++ b/include/linux/stacktrace.h @@ -64,7 +64,7 @@ void arch_stack_walk_user(stack_trace_consume_fn consume_entry, void *cookie, struct stack_trace { unsigned int nr_entries, max_entries; unsigned long *entries; - int skip; /* input argument: How many entries to skip */ + unsigned int skip; /* input argument: How many entries to skip */ }; extern void save_stack_trace(struct stack_trace *trace);
Modify the variable type of 'skip' member of struct stack_trace. In theory, the 'skip' variable type should be unsigned int. There are two reasons: - The 'skip' only has two situation, 1)Positive value, 2)Zero - The 'skip' of struct stack_trace has inconsistent type with struct stack_trace_data, it makes a bit confusion in the relationship between struct stack_trace and stack_trace_data. Signed-off-by: Walter Wu <walter-zh.wu@mediatek.com> Cc: Matthias Brugger <matthias.bgg@gmail.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ingo Molnar <mingo@kernel.org> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Bart Van Assche <bvanassche@acm.org> Cc: Andrew Morton <akpm@linux-foundation.org> --- changes in v2: modify the commit log to describe the matter more clearly. --- include/linux/stacktrace.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)