diff options
Diffstat (limited to 'arch/arm64/kernel/time.c')
-rw-r--r-- | arch/arm64/kernel/time.c | 27 |
1 files changed, 14 insertions, 13 deletions
diff --git a/arch/arm64/kernel/time.c b/arch/arm64/kernel/time.c index 73f06d4b3aae..b5855eb7435d 100644 --- a/arch/arm64/kernel/time.c +++ b/arch/arm64/kernel/time.c @@ -18,36 +18,37 @@ #include <linux/timex.h> #include <linux/errno.h> #include <linux/profile.h> +#include <linux/stacktrace.h> #include <linux/syscore_ops.h> #include <linux/timer.h> #include <linux/irq.h> #include <linux/delay.h> #include <linux/clocksource.h> -#include <linux/clk-provider.h> +#include <linux/of_clk.h> #include <linux/acpi.h> #include <clocksource/arm_arch_timer.h> #include <asm/thread_info.h> -#include <asm/stacktrace.h> #include <asm/paravirt.h> -unsigned long profile_pc(struct pt_regs *regs) +static bool profile_pc_cb(void *arg, unsigned long pc) { - struct stackframe frame; + unsigned long *prof_pc = arg; - if (!in_lock_functions(regs->pc)) - return regs->pc; + if (in_lock_functions(pc)) + return true; + *prof_pc = pc; + return false; +} - start_backtrace(&frame, regs->regs[29], regs->pc); +unsigned long profile_pc(struct pt_regs *regs) +{ + unsigned long prof_pc = 0; - do { - int ret = unwind_frame(NULL, &frame); - if (ret < 0) - return 0; - } while (in_lock_functions(frame.pc)); + arch_stack_walk(profile_pc_cb, &prof_pc, current, regs); - return frame.pc; + return prof_pc; } EXPORT_SYMBOL(profile_pc); |