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unicore32: remove unused pmode argument in c_backtrace()

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The pmode parameter isn't used in assembly - remove it.  Second argument
will be reused for printk() log level.

Signed-off-by: Dmitry Safonov <dima@arista.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Guan Xuetao <gxt@pku.edu.cn>
Link: http://lkml.kernel.org/r/20200418201944.482088-38-dima@arista.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Dmitry Safonov 2020-06-08 21:31:48 -07:00 committed by Linus Torvalds
parent 1ad87824f4
commit ee1e99009e
2 changed files with 6 additions and 10 deletions
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2
arch/unicore32/kernel/setup.h
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@ -29,7 +29,7 @@ extern void kernel_thread_helper(void);
extern void __init early_signal_init(void); extern void __init early_signal_init(void);
extern asmlinkage void __backtrace(void); extern asmlinkage void __backtrace(void);
extern asmlinkage void c_backtrace(unsigned long fp, int pmode); extern asmlinkage void c_backtrace(unsigned long fp);
extern void __show_regs(struct pt_regs *); extern void __show_regs(struct pt_regs *);

14
arch/unicore32/kernel/traps.c
View File

@ -137,7 +137,7 @@ static void dump_instr(const char *lvl, struct pt_regs *regs)
static void dump_backtrace(struct pt_regs *regs, struct task_struct *tsk) static void dump_backtrace(struct pt_regs *regs, struct task_struct *tsk)
{ {
unsigned int fp, mode; unsigned int fp;
int ok = 1; int ok = 1;
printk(KERN_DEFAULT "Backtrace: "); printk(KERN_DEFAULT "Backtrace: ");
@ -145,16 +145,12 @@ static void dump_backtrace(struct pt_regs *regs, struct task_struct *tsk)
if (!tsk) if (!tsk)
tsk = current; tsk = current;
if (regs) { if (regs)
fp = regs->UCreg_fp; fp = regs->UCreg_fp;
mode = processor_mode(regs); else if (tsk != current)
} else if (tsk != current) {
fp = thread_saved_fp(tsk); fp = thread_saved_fp(tsk);
mode = 0x10; else
} else {
asm("mov %0, fp" : "=r" (fp) : : "cc"); asm("mov %0, fp" : "=r" (fp) : : "cc");
mode = 0x10;
}
if (!fp) { if (!fp) {
printk("no frame pointer"); printk("no frame pointer");
@ -167,7 +163,7 @@ static void dump_backtrace(struct pt_regs *regs, struct task_struct *tsk)
printk("\n"); printk("\n");
if (ok) if (ok)
c_backtrace(fp, mode); c_backtrace(fp);
} }
void show_stack(struct task_struct *tsk, unsigned long *sp) void show_stack(struct task_struct *tsk, unsigned long *sp)