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[S390] Simplify stack trace. 

sparse gives us a few of these:
stacktrace.c:69:38: warning: incorrect type in argument 2
                    (different signedness)
stacktrace.c:69:38:    expected unsigned int *skip

Just get rid of the 'skip' argument since it is contained in the
struct stack_trace that gets passed anyway.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Heiko Carstens 2007-07-17 13:36:07 +02:00 committed by Martin Schwidefsky
parent 810cb5b32d
commit e90a2857c6
1 changed files with 11 additions and 15 deletions
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26
arch/s390/kernel/stacktrace.c
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@ -12,7 +12,6 @@
#include <linux/kallsyms.h>
static unsigned long save_context_stack(struct stack_trace *trace,
unsigned int *skip,
unsigned long sp,
unsigned long low,
unsigned long high)
@ -28,10 +27,10 @@ static unsigned long save_context_stack(struct stack_trace *trace,
sf = (struct stack_frame *)sp;
while(1) {
addr = sf->gprs[8] & PSW_ADDR_INSN;
if (!(*skip))
if (!trace->skip)
trace->entries[trace->nr_entries++] = addr;
else
(*skip)--;
trace->skip--;
if (trace->nr_entries >= trace->max_entries)
return sp;
low = sp;
@ -48,10 +47,10 @@ static unsigned long save_context_stack(struct stack_trace *trace,
return sp;
regs = (struct pt_regs *)sp;
addr = regs->psw.addr & PSW_ADDR_INSN;
if (!(*skip))
if (!trace->skip)
trace->entries[trace->nr_entries++] = addr;
else
(*skip)--;
trace->skip--;
if (trace->nr_entries >= trace->max_entries)
return sp;
low = sp;
@ -65,20 +64,17 @@ void save_stack_trace(struct stack_trace *trace)
unsigned long orig_sp, new_sp;
orig_sp = sp & PSW_ADDR_INSN;
new_sp = save_context_stack(trace, &trace->skip, orig_sp,
S390_lowcore.panic_stack - PAGE_SIZE,
S390_lowcore.panic_stack);
new_sp = save_context_stack(trace, orig_sp,
S390_lowcore.panic_stack - PAGE_SIZE,
S390_lowcore.panic_stack);
if (new_sp != orig_sp)
return;
new_sp = save_context_stack(trace, &trace->skip, new_sp,
S390_lowcore.async_stack - ASYNC_SIZE,
S390_lowcore.async_stack);
new_sp = save_context_stack(trace, new_sp,
S390_lowcore.async_stack - ASYNC_SIZE,
S390_lowcore.async_stack);
if (new_sp != orig_sp)
return;
save_context_stack(trace, &trace->skip, new_sp,
save_context_stack(trace, new_sp,
S390_lowcore.thread_info,
S390_lowcore.thread_info + THREAD_SIZE);
return;
}