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authorMathieu Desnoyers <mathieu.desnoyers@efficios.com>2011-03-16 19:04:59 -0400
committerMathieu Desnoyers <mathieu.desnoyers@polymtl.ca>2011-03-16 19:04:59 -0400
commitb6fe057e20fd792a5a6e16b48451de6cc6938c2b (patch)
tree99370d97ea96b3339ff7b4709d9f2774e25f9802 /arch/powerpc
parentab1e23d27640b08b12d68f55add7a5314c6bc14b (diff)
downloadlinux-2.6.38-lt-ux500-b6fe057e20fd792a5a6e16b48451de6cc6938c2b.tar.gz
lttng-instrumentation/lttng-instrumentation-powerpc
LTTng instrumentation Powerpc Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Diffstat (limited to 'arch/powerpc')
-rw-r--r--arch/powerpc/kernel/misc_32.S2
-rw-r--r--arch/powerpc/kernel/misc_64.S2
-rw-r--r--arch/powerpc/kernel/process.c14
-rw-r--r--arch/powerpc/kernel/ptrace.c8
-rw-r--r--arch/powerpc/kernel/sys_ppc32.c4
-rw-r--r--arch/powerpc/kernel/time.c3
-rw-r--r--arch/powerpc/kernel/traps.c14
-rw-r--r--arch/powerpc/mm/fault.c6
8 files changed, 51 insertions, 2 deletions
diff --git a/arch/powerpc/kernel/misc_32.S b/arch/powerpc/kernel/misc_32.S
index 094bd9821ad..8294f73feac 100644
--- a/arch/powerpc/kernel/misc_32.S
+++ b/arch/powerpc/kernel/misc_32.S
@@ -665,7 +665,7 @@ _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)
diff --git a/arch/powerpc/kernel/misc_64.S b/arch/powerpc/kernel/misc_64.S
index 206a321a71d..1e10e579922 100644
--- a/arch/powerpc/kernel/misc_64.S
+++ b/arch/powerpc/kernel/misc_64.S
@@ -415,7 +415,7 @@ _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)
diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c
index 8303a6c65ef..0a85886a784 100644
--- a/arch/powerpc/kernel/process.c
+++ b/arch/powerpc/kernel/process.c
@@ -38,6 +38,7 @@
#include <linux/personality.h>
#include <linux/random.h>
#include <linux/hw_breakpoint.h>
+#include <trace/sched.h>
#include <asm/pgtable.h>
#include <asm/uaccess.h>
@@ -55,6 +56,8 @@
#include <linux/kprobes.h>
#include <linux/kdebug.h>
+DEFINE_TRACE(sched_kthread_create);
+
extern unsigned long _get_SP(void);
#ifndef CONFIG_SMP
@@ -663,6 +666,17 @@ 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_sched_kthread_create(fn, retval);
+ return retval;
+}
+
void exit_thread(void)
{
discard_lazy_cpu_state();
diff --git a/arch/powerpc/kernel/ptrace.c b/arch/powerpc/kernel/ptrace.c
index 90653699829..fb8924c5fdf 100644
--- a/arch/powerpc/kernel/ptrace.c
+++ b/arch/powerpc/kernel/ptrace.c
@@ -34,12 +34,16 @@
#endif
#include <linux/hw_breakpoint.h>
#include <linux/perf_event.h>
+#include <trace/syscall.h>
#include <asm/uaccess.h>
#include <asm/page.h>
#include <asm/pgtable.h>
#include <asm/system.h>
+DEFINE_TRACE(syscall_entry);
+DEFINE_TRACE(syscall_exit);
+
/*
* The parameter save area on the stack is used to store arguments being passed
* to callee function and is located at fixed offset from stack pointer.
@@ -1680,6 +1684,8 @@ long do_syscall_trace_enter(struct pt_regs *regs)
{
long ret = 0;
+ trace_syscall_entry(regs, regs->gpr[0]);
+
secure_computing(regs->gpr[0]);
if (test_thread_flag(TIF_SYSCALL_TRACE) &&
@@ -1715,6 +1721,8 @@ void do_syscall_trace_leave(struct pt_regs *regs)
{
int step;
+ trace_syscall_exit(regs->result);
+
if (unlikely(current->audit_context))
audit_syscall_exit((regs->ccr&0x10000000)?AUDITSC_FAILURE:AUDITSC_SUCCESS,
regs->result);
diff --git a/arch/powerpc/kernel/sys_ppc32.c b/arch/powerpc/kernel/sys_ppc32.c
index 4e5bf1edc0f..5fe3cb1f38b 100644
--- a/arch/powerpc/kernel/sys_ppc32.c
+++ b/arch/powerpc/kernel/sys_ppc32.c
@@ -41,6 +41,7 @@
#include <linux/elf.h>
#include <linux/ipc.h>
#include <linux/slab.h>
+#include <trace/ipc.h>
#include <asm/ptrace.h>
#include <asm/types.h>
@@ -51,6 +52,7 @@
#include <asm/ppc-pci.h>
#include <asm/syscalls.h>
+DEFINE_TRACE(ipc_call);
asmlinkage long ppc32_select(u32 n, compat_ulong_t __user *inp,
compat_ulong_t __user *outp, compat_ulong_t __user *exp,
@@ -79,6 +81,8 @@ long compat_sys_ipc(u32 call, u32 first, u32 second, u32 third, compat_uptr_t pt
version = call >> 16; /* hack for backward compatibility */
call &= 0xffff;
+ trace_ipc_call(call, first);
+
switch (call) {
case SEMTIMEDOP:
diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c
index 09d31dbf43f..2beaa8d98de 100644
--- a/arch/powerpc/kernel/time.c
+++ b/arch/powerpc/kernel/time.c
@@ -585,6 +585,8 @@ void timer_interrupt(struct pt_regs * regs)
* some CPUs will continuue to take decrementer exceptions */
set_dec(DECREMENTER_MAX);
+ trace_trap_entry(regs, regs->trap);
+
#if defined(CONFIG_PPC32) && defined(CONFIG_PMAC)
if (atomic_read(&ppc_n_lost_interrupts) != 0)
do_IRQ(regs);
@@ -631,6 +633,7 @@ void timer_interrupt(struct pt_regs * regs)
set_irq_regs(old_regs);
trace_timer_interrupt_exit(regs);
+ trace_trap_exit();
}
#ifdef CONFIG_SUSPEND
diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c
index d002c253fc0..62ae8cad792 100644
--- a/arch/powerpc/kernel/traps.c
+++ b/arch/powerpc/kernel/traps.c
@@ -35,6 +35,7 @@
#include <linux/kdebug.h>
#include <linux/debugfs.h>
#include <linux/ltt-core.h>
+#include <trace/trap.h>
#include <asm/emulated_ops.h>
#include <asm/pgtable.h>
@@ -76,6 +77,12 @@ EXPORT_SYMBOL(__debugger_fault_handler);
#endif
/*
+ * Also used in time.c and fault.c.
+ */
+DEFINE_TRACE(trap_entry);
+DEFINE_TRACE(trap_exit);
+
+/*
* Trap & Exception support
*/
@@ -209,11 +216,14 @@ void _exception(int signr, struct pt_regs *regs, int code, unsigned long addr)
addr, regs->nip, regs->link, code);
}
+ trace_trap_entry(regs, regs->trap);
+
memset(&info, 0, sizeof(info));
info.si_signo = signr;
info.si_code = code;
info.si_addr = (void __user *) addr;
force_sig_info(signr, &info, current);
+ trace_trap_exit();
}
#ifdef CONFIG_PPC64
@@ -1092,7 +1102,9 @@ void performance_monitor_exception(struct pt_regs *regs)
{
__get_cpu_var(irq_stat).pmu_irqs++;
+ trace_trap_entry(regs, regs->trap);
perf_irq(regs);
+ trace_trap_exit();
}
#ifdef CONFIG_8xx
@@ -1313,12 +1325,14 @@ void altivec_assist_exception(struct pt_regs *regs)
/* got an error reading the instruction */
_exception(SIGSEGV, regs, SEGV_ACCERR, regs->nip);
} else {
+ trace_trap_entry(regs, regs->trap);
/* 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_trap_exit();
}
}
#endif /* CONFIG_ALTIVEC */
diff --git a/arch/powerpc/mm/fault.c b/arch/powerpc/mm/fault.c
index 54f4fb994e9..2fb3d0ce222 100644
--- a/arch/powerpc/mm/fault.c
+++ b/arch/powerpc/mm/fault.c
@@ -31,6 +31,7 @@
#include <linux/kdebug.h>
#include <linux/perf_event.h>
#include <linux/magic.h>
+#include <trace/fault.h>
#include <asm/firmware.h>
#include <asm/page.h>
@@ -43,6 +44,9 @@
#include <asm/siginfo.h>
#include <mm/mmu_decl.h>
+DEFINE_TRACE(page_fault_entry);
+DEFINE_TRACE(page_fault_exit);
+
#ifdef CONFIG_KPROBES
static inline int notify_page_fault(struct pt_regs *regs)
{
@@ -309,7 +313,9 @@ good_area:
* make sure we exit gracefully rather than endlessly redo
* the fault.
*/
+ trace_page_fault_entry(regs, regs->trap, mm, vma, address, is_write);
ret = handle_mm_fault(mm, vma, address, is_write ? FAULT_FLAG_WRITE : 0);
+ trace_page_fault_exit(ret);
if (unlikely(ret & VM_FAULT_ERROR)) {
if (ret & VM_FAULT_OOM)
goto out_of_memory;