static int ftrace_modify_code(unsigned long ip, unsigned int new_code)
{
int faulted;
- mm_segment_t old_fs;
/* *(unsigned int *)ip = new_code; */
safe_store_code(new_code, ip, faulted);
if (unlikely(faulted))
return -EFAULT;
- old_fs = get_fs();
- set_fs(KERNEL_DS);
flush_icache_range(ip, ip + 8);
- set_fs(old_fs);
return 0;
}
#include <asm/cacheflush.h>
#include <asm/processor.h>
#include <asm/sigcontext.h>
-#include <linux/uaccess.h>
#include <asm/irq_regs.h>
static struct hard_trap_info {
void kgdb_call_nmi_hook(void *ignored)
{
- mm_segment_t old_fs;
-
- old_fs = get_fs();
- set_fs(KERNEL_DS);
-
kgdb_nmicallback(raw_smp_processor_id(), get_irq_regs());
-
- set_fs(old_fs);
}
static int compute_signal(int tt)
struct die_args *args = (struct die_args *)ptr;
struct pt_regs *regs = args->regs;
int trap = (regs->cp0_cause & 0x7c) >> 2;
- mm_segment_t old_fs;
#ifdef CONFIG_KPROBES
/*
if (user_mode(regs))
return NOTIFY_DONE;
- /* Kernel mode. Set correct address limit */
- old_fs = get_fs();
- set_fs(KERNEL_DS);
-
if (atomic_read(&kgdb_active) != -1)
kgdb_nmicallback(smp_processor_id(), regs);
- if (kgdb_handle_exception(trap, compute_signal(trap), cmd, regs)) {
- set_fs(old_fs);
+ if (kgdb_handle_exception(trap, compute_signal(trap), cmd, regs))
return NOTIFY_DONE;
- }
if (atomic_read(&kgdb_setting_breakpoint))
if ((trap == 9) && (regs->cp0_epc == (unsigned long)breakinst))
local_irq_enable();
__flush_cache_all();
- set_fs(old_fs);
return NOTIFY_STOP;
}