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arm64: abort coresight tracing on user faults

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Add support to abort CoreSight tracing for user faults and undefined
instructions for 64 bit platform. We already have this support for 32 bit.

Change-Id: Ic5d1f0dbb5c7abbcf5bf95218dd50e18c6677e1f
Signed-off-by: Sarang Joshi <spjoshi@codeaurora.org>
This commit is contained in:
Sarang Joshi 2014-02-21 17:09:28 -08:00
parent 048c6ef4f6
commit ebaba9c7b1
2 changed files with 8 additions and 0 deletions
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4
arch/arm64/kernel/traps.c
View file

@ -38,6 +38,8 @@
#include <asm/exception.h>
#include <asm/system_misc.h>
#include <trace/events/exception.h>
static const char *handler[]= {
"Synchronous Abort",
"IRQ",
@ -266,6 +268,8 @@ asmlinkage void __exception do_undefinstr(struct pt_regs *regs)
if (!aarch32_break_handler(regs))
return;
trace_undef_instr(regs, (void *)pc);
if (show_unhandled_signals && unhandled_signal(current, SIGILL) &&
printk_ratelimit()) {
pr_info("%s[%d]: undefined instruction: pc=%p\n",

4
arch/arm64/mm/fault.c
View file

@ -36,6 +36,8 @@
#include <asm/pgtable.h>
#include <asm/tlbflush.h>
#include <trace/events/exception.h>
static const char *fault_name(unsigned int esr);
/*
@ -113,6 +115,8 @@ static void __do_user_fault(struct task_struct *tsk, unsigned long addr,
{
struct siginfo si;
trace_user_fault(tsk, addr, esr);
if (show_unhandled_signals && unhandled_signal(tsk, sig) &&
printk_ratelimit()) {
pr_info("%s[%d]: unhandled %s (%d) at 0x%08lx, esr 0x%03x\n",