Signed-off-by: Mathieu Desnoyers <[email protected]>
---
arch/powerpc/kernel/misc_32.S | 2 +-
arch/powerpc/kernel/misc_64.S | 2 +-
arch/powerpc/kernel/process.c | 11 +++++++++++
arch/powerpc/kernel/ptrace.c | 4 ++++
arch/powerpc/kernel/syscalls.c | 2 ++
arch/powerpc/kernel/time.c | 5 +++++
arch/powerpc/kernel/traps.c | 11 +++++++++++
arch/powerpc/mm/fault.c | 3 +++
8 files changed, 38 insertions(+), 2 deletions(-)
Index: linux-2.6-lttng/arch/powerpc/kernel/misc_32.S
===================================================================
--- linux-2.6-lttng.orig/arch/powerpc/kernel/misc_32.S 2007-11-28 09:27:28.000000000 -0500
+++ linux-2.6-lttng/arch/powerpc/kernel/misc_32.S 2007-11-28 09:33:42.000000000 -0500
@@ -766,7 +766,7 @@ _GLOBAL(abs)
* Create a kernel thread
* kernel_thread(fn, arg, flags)
*/
-_GLOBAL(kernel_thread)
+_GLOBAL(original_kernel_thread)
stwu r1,-16(r1)
stw r30,8(r1)
stw r31,12(r1)
Index: linux-2.6-lttng/arch/powerpc/kernel/misc_64.S
===================================================================
--- linux-2.6-lttng.orig/arch/powerpc/kernel/misc_64.S 2007-11-28 09:27:28.000000000 -0500
+++ linux-2.6-lttng/arch/powerpc/kernel/misc_64.S 2007-11-28 09:33:42.000000000 -0500
@@ -427,7 +427,7 @@ _GLOBAL(scom970_write)
* Create a kernel thread
* kernel_thread(fn, arg, flags)
*/
-_GLOBAL(kernel_thread)
+_GLOBAL(original_kernel_thread)
std r29,-24(r1)
std r30,-16(r1)
stdu r1,-STACK_FRAME_OVERHEAD(r1)
Index: linux-2.6-lttng/arch/powerpc/kernel/process.c
===================================================================
--- linux-2.6-lttng.orig/arch/powerpc/kernel/process.c 2007-11-28 09:27:28.000000000 -0500
+++ linux-2.6-lttng/arch/powerpc/kernel/process.c 2007-11-28 09:33:42.000000000 -0500
@@ -488,6 +488,17 @@ void show_regs(struct pt_regs * regs)
show_instructions(regs);
}
+long original_kernel_thread(int (*fn) (void*), void* arg, unsigned long flags);
+
+long kernel_thread(int (fn) (void *), void* arg, unsigned long flags)
+{
+ long retval;
+
+ retval = original_kernel_thread(fn, arg, flags);
+ trace_mark(kernel_arch_kthread_create, "pid %ld fn %p", retval, fn);
+ return retval;
+}
+
void exit_thread(void)
{
discard_lazy_cpu_state();
Index: linux-2.6-lttng/arch/powerpc/kernel/ptrace.c
===================================================================
--- linux-2.6-lttng.orig/arch/powerpc/kernel/ptrace.c 2007-11-28 09:27:28.000000000 -0500
+++ linux-2.6-lttng/arch/powerpc/kernel/ptrace.c 2007-11-28 09:33:42.000000000 -0500
@@ -624,6 +624,8 @@ static void do_syscall_trace(void)
void do_syscall_trace_enter(struct pt_regs *regs)
{
+ trace_mark(kernel_arch_syscall_entry, "syscall_id %d ip #p%ld",
+ (int)regs->gpr[0], instruction_pointer(regs));
secure_computing(regs->gpr[0]);
if (test_thread_flag(TIF_SYSCALL_TRACE)
@@ -650,6 +652,8 @@ void do_syscall_trace_enter(struct pt_re
void do_syscall_trace_leave(struct pt_regs *regs)
{
+ trace_mark(kernel_arch_syscall_exit, "ret %ld", regs->result);
+
if (unlikely(current->audit_context))
audit_syscall_exit((regs->ccr&0x10000000)?AUDITSC_FAILURE:AUDITSC_SUCCESS,
regs->result);
Index: linux-2.6-lttng/arch/powerpc/kernel/syscalls.c
===================================================================
--- linux-2.6-lttng.orig/arch/powerpc/kernel/syscalls.c 2007-11-28 09:27:28.000000000 -0500
+++ linux-2.6-lttng/arch/powerpc/kernel/syscalls.c 2007-11-28 09:33:42.000000000 -0500
@@ -56,6 +56,8 @@ int sys_ipc(uint call, int first, unsign
version = call >> 16; /* hack for backward compatibility */
call &= 0xffff;
+ trace_mark(kernel_arch_ipc_call, "call %u first %d", call, first);
+
ret = -ENOSYS;
switch (call) {
case SEMOP:
Index: linux-2.6-lttng/arch/powerpc/kernel/time.c
===================================================================
--- linux-2.6-lttng.orig/arch/powerpc/kernel/time.c 2007-11-28 09:27:28.000000000 -0500
+++ linux-2.6-lttng/arch/powerpc/kernel/time.c 2007-11-28 09:33:42.000000000 -0500
@@ -564,6 +564,9 @@ void timer_interrupt(struct pt_regs * re
* some CPUs will continuue to take decrementer exceptions */
set_dec(DECREMENTER_MAX);
+ trace_mark(kernel_arch_trap_entry, "trap_id %ld ip #p%ld", regs->trap,
+ instruction_pointer(regs));
+
#ifdef CONFIG_PPC32
if (atomic_read(&ppc_n_lost_interrupts) != 0)
do_IRQ(regs);
@@ -605,6 +608,8 @@ void timer_interrupt(struct pt_regs * re
irq_exit();
set_irq_regs(old_regs);
+
+ trace_mark(kernel_arch_trap_exit, MARK_NOARGS);
}
void wakeup_decrementer(void)
Index: linux-2.6-lttng/arch/powerpc/kernel/traps.c
===================================================================
--- linux-2.6-lttng.orig/arch/powerpc/kernel/traps.c 2007-11-28 09:27:28.000000000 -0500
+++ linux-2.6-lttng/arch/powerpc/kernel/traps.c 2007-11-28 09:33:42.000000000 -0500
@@ -188,6 +188,9 @@ void _exception(int signr, struct pt_reg
addr, regs->nip, regs->link, code);
}
+ trace_mark(kernel_arch_trap_entry, "trap_id %ld ip #p%ld", regs->trap,
+ instruction_pointer(regs));
+
memset(&info, 0, sizeof(info));
info.si_signo = signr;
info.si_code = code;
@@ -215,6 +218,8 @@ void _exception(int signr, struct pt_reg
do_exit(signr);
}
}
+
+ trace_mark(kernel_arch_trap_exit, MARK_NOARGS);
}
#ifdef CONFIG_PPC64
@@ -908,7 +913,10 @@ void altivec_unavailable_exception(struc
void performance_monitor_exception(struct pt_regs *regs)
{
+ trace_mark(kernel_arch_trap_entry, "trap_id %ld ip #p%ld", regs->trap,
+ instruction_pointer(regs));
perf_irq(regs);
+ trace_mark(kernel_arch_trap_exit, MARK_NOARGS);
}
#ifdef CONFIG_8xx
@@ -1020,12 +1028,15 @@ void altivec_assist_exception(struct pt_
/* got an error reading the instruction */
_exception(SIGSEGV, regs, SEGV_ACCERR, regs->nip);
} else {
+ trace_mark(kernel_arch_trap_entry, "trap_id %ld ip #p%ld",
+ regs->trap, instruction_pointer(regs));
/* didn't recognize the instruction */
/* XXX quick hack for now: set the non-Java bit in the VSCR */
if (printk_ratelimit())
printk(KERN_ERR "Unrecognized altivec instruction "
"in %s at %lx\n", current->comm, regs->nip);
current->thread.vscr.u[3] |= 0x10000;
+ trace_mark(kernel_arch_trap_exit, MARK_NOARGS);
}
}
#endif /* CONFIG_ALTIVEC */
Index: linux-2.6-lttng/arch/powerpc/mm/fault.c
===================================================================
--- linux-2.6-lttng.orig/arch/powerpc/mm/fault.c 2007-11-28 09:27:28.000000000 -0500
+++ linux-2.6-lttng/arch/powerpc/mm/fault.c 2007-11-28 09:33:42.000000000 -0500
@@ -336,7 +336,10 @@ good_area:
* the fault.
*/
survive:
+ trace_mark(kernel_arch_trap_entry, "trap_id %ld ip #p%ld", regs->trap,
+ instruction_pointer(regs));
ret = handle_mm_fault(mm, vma, address, is_write);
+ trace_mark(kernel_arch_trap_exit, MARK_NOARGS);
if (unlikely(ret & VM_FAULT_ERROR)) {
if (ret & VM_FAULT_OOM)
goto out_of_memory;
--
Mathieu Desnoyers
Computer Engineering Ph.D. Student, Ecole Polytechnique de Montreal
OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F BA06 3F25 A8FE 3BAE 9A68
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