[PATCH] MIPS Fixups for LTTng (Update)

Source: MontaVista Software, Inc.
Type: Defect Fix 
Signed-off-by: Manish Lachwani <[email protected]>
Description:

MIPS Fixups for LTTng:

 arch/mips/kernel/process.c     |    4 ----
 arch/mips/kernel/scall32-o32.S |    9 ---------
 arch/mips/kernel/traps.c       |   13 ++++++-------
 arch/mips/mm/fault.c           |    6 ------
 4 files changed, 6 insertions(+), 26 deletions(-)

Index: linux-2.6.18/arch/mips/kernel/process.c
===================================================================
--- linux-2.6.18.orig/arch/mips/kernel/process.c
+++ linux-2.6.18/arch/mips/kernel/process.c
@@ -276,10 +276,6 @@ long kernel_thread(int (*fn)(void *), vo
 	pid = do_fork(flags | CLONE_VM | CLONE_UNTRACED,
 			0, &regs, 0, NULL, NULL);
 	MARK(kernel_thread_create, "%ld %p", pid, fn);
-#ifdef CONFIG_LTT
-	if(pid >= 0)
-		trace_process_kernel_thread(pid, fn);
-#endif //CONFIG_LTT
 	return pid;
 }
 
Index: linux-2.6.18/arch/mips/kernel/traps.c
===================================================================
--- linux-2.6.18.orig/arch/mips/kernel/traps.c
+++ linux-2.6.18/arch/mips/kernel/traps.c
@@ -591,7 +591,7 @@ asmlinkage void do_fpe(struct pt_regs *r
 {
 	die_if_kernel("FP exception in kernel code", regs);
 
-	trace_kernel_trap_entry(CAUSE_EXCCODE(regs->cp0_cause), (void*)regs->cp0_epc);
+	MARK(kernel_trap_entry, "%d struct pt_regs %p", CAUSE_EXCCODE(regs->cp0_cause), regs);
 	if (fcr31 & FPU_CSR_UNI_X) {
 		int sig;
 
@@ -748,20 +748,19 @@ asmlinkage void do_cpu(struct pt_regs *r
 
 	die_if_kernel("do_cpu invoked from kernel context!", regs);
 
-	trace_kernel_trap_entry(CAUSE_EXCCODE(regs->cp0_cause), (void*)regs->cp0_epc);
-
+	MARK(kernel_trap_entry, "%d struct pt_regs %p", CAUSE_EXCCODE(regs->cp0_cause), regs);
 	cpid = (regs->cp0_cause >> CAUSEB_CE) & 3;
 
 	switch (cpid) {
 	case 0:
 		if (!cpu_has_llsc)
 			if (!simulate_llsc(regs)) {
-				trace_kernel_trap_exit();
+				MARK(kernel_trap_exit, MARK_NOARGS);
 				return;
 			}
 
 		if (!simulate_rdhwr(regs)) {
-			trace_kernel_trap_exit();
+			MARK(kernel_trap_exit, MARK_NOARGS);
 			return;
 		}
 
@@ -818,7 +817,7 @@ asmlinkage void do_cpu(struct pt_regs *r
 			}
 #endif /* CONFIG_MIPS_MT_FPAFF */
 		}
-		trace_kernel_trap_exit();
+		MARK(kernel_trap_exit, MARK_NOARGS);
 		return;
 
 	case 2:
@@ -828,7 +827,7 @@ asmlinkage void do_cpu(struct pt_regs *r
 	}
 
 	force_sig(SIGILL, current);
-	trace_kernel_trap_exit();
+	MARK(kernel_trap_exit, MARK_NOARGS);
 }
 
 asmlinkage void do_mdmx(struct pt_regs *regs)
Index: linux-2.6.18/arch/mips/kernel/scall32-o32.S
===================================================================
--- linux-2.6.18.orig/arch/mips/kernel/scall32-o32.S
+++ linux-2.6.18/arch/mips/kernel/scall32-o32.S
@@ -69,7 +69,6 @@ stack_done:
 #ifdef CONFIG_LTT
 	sw  t2, PT_R1(sp)
 	move  a0, sp
-	jal     trace_real_syscall_entry
 	lw  t2, PT_R1(sp)
 
 	lw  a0, PT_R4(sp)		# Restore argument registers
@@ -94,10 +93,6 @@ stack_done:
 					# restarting
 1:	sw	v0, PT_R2(sp)		# result
 
-#ifdef CONFIG_LTT
-	jal trace_real_syscall_exit
-#endif // CONFIG_LTT
-
 o32_syscall_exit:
 	raw_local_irq_disable	# make sure need_resched and
 					# signals dont change between
@@ -139,10 +134,6 @@ syscall_trace_entry:
 					# restarting
 1:	sw	v0, PT_R2(sp)		# result
 
-#ifdef CONFIG_LTT
- jal trace_real_syscall_exit
-#endif //CONFIG_LTT)
-
 	j	syscall_exit
 
 /* ------------------------------------------------------------------------ */
Index: linux-2.6.18/arch/mips/mm/fault.c
===================================================================
--- linux-2.6.18.orig/arch/mips/mm/fault.c
+++ linux-2.6.18/arch/mips/mm/fault.c
@@ -115,7 +115,6 @@ survive:
 	}
 
 	up_read(&mm->mmap_sem);
-	trace_kernel_trap_exit();
 	return;
 
 /*
@@ -144,7 +143,6 @@ bad_area_nosemaphore:
 		/* info.si_code has been set above */
 		info.si_addr = (void __user *) address;
 		force_sig_info(SIGSEGV, &info, tsk);
-		trace_kernel_trap_exit();
 		return;
 	}
 
@@ -210,7 +208,6 @@ do_sigbus:
 	info.si_addr = (void __user *) address;
 	force_sig_info(SIGBUS, &info, tsk);
 
-	trace_kernel_trap_exit();
 	return;
 vmalloc_fault:
 	{
@@ -248,9 +245,6 @@ vmalloc_fault:
 		pte_k = pte_offset_kernel(pmd_k, address);
 		if (!pte_present(*pte_k))
 			goto no_context;
-		trace_kernel_trap_entry(CAUSE_EXCCODE(regs->cp0_cause), (void*)regs->cp0_epc);
-		trace_kernel_trap_exit();
 		return;
 	}
-	trace_kernel_trap_exit();
 }