diff options
| author | Satyajit Desai <sadesai@codeaurora.org> | 2016-06-27 12:39:34 -0700 |
|---|---|---|
| committer | Satyajit Desai <sadesai@codeaurora.org> | 2016-08-19 14:56:53 -0700 |
| commit | c34bf4be22d64499449d1cfe550b05365d048403 (patch) | |
| tree | 9a1558daae6ed11ba043063b2ab588c227e191c6 /arch/arm64 | |
| parent | 0c8cf716fa02d0f6b6ef2ef1446f9f4819fc83dd (diff) | |
coresight: abort coresight tracing on kernel crash
Add trace events to control aborting CoreSight trace
dynamically based on module parameter.
Coresight driver will dump any trace present in the current sink
in case we hit a kernel panic, user fault or an undefined instruction.
Change-Id: Iee1ccf5cbd7b767753a3115c0570e63fbe2aa8f3
Signed-off-by: Satyajit Desai <sadesai@codeaurora.org>
Diffstat (limited to 'arch/arm64')
| -rw-r--r-- | arch/arm64/kernel/traps.c | 4 | ||||
| -rw-r--r-- | arch/arm64/mm/fault.c | 4 |
2 files changed, 8 insertions, 0 deletions
diff --git a/arch/arm64/kernel/traps.c b/arch/arm64/kernel/traps.c index e8b1f7910490..48b75ece4c17 100644 --- a/arch/arm64/kernel/traps.c +++ b/arch/arm64/kernel/traps.c @@ -44,6 +44,8 @@ #include <asm/esr.h> #include <asm/edac.h> +#include <trace/events/exception.h> + static const char *handler[]= { "Synchronous Abort", "IRQ", @@ -421,6 +423,8 @@ asmlinkage void __exception do_undefinstr(struct pt_regs *regs) if (call_undef_hook(regs) == 0) return; + trace_undef_instr(regs, (void *)pc); + if (unhandled_signal(current, SIGILL) && show_unhandled_signals_ratelimited()) { pr_info("%s[%d]: undefined instruction: pc=%p\n", current->comm, task_pid_nr(current), pc); diff --git a/arch/arm64/mm/fault.c b/arch/arm64/mm/fault.c index 7bb08670fc10..69079e5bfc84 100644 --- a/arch/arm64/mm/fault.c +++ b/arch/arm64/mm/fault.c @@ -40,6 +40,8 @@ #include <asm/tlbflush.h> #include <asm/edac.h> +#include <trace/events/exception.h> + static const char *fault_name(unsigned int esr); /* @@ -118,6 +120,8 @@ static void __do_user_fault(struct task_struct *tsk, unsigned long addr, { struct siginfo si; + trace_user_fault(tsk, addr, esr); + if (unhandled_signal(tsk, sig) && show_unhandled_signals_ratelimited()) { pr_info("%s[%d]: unhandled %s (%d) at 0x%08lx, esr 0x%03x\n", tsk->comm, task_pid_nr(tsk), fault_name(esr), sig, |