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Subject[patch-early-RFC 07/10] LTTng instrumentation SH64
traps are missing.
syscall trace missing.

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
---
arch/sh64/kernel/entry.S | 2 +-
arch/sh64/kernel/process.c | 5 ++++-
arch/sh64/kernel/sys_sh64.c | 2 ++
3 files changed, 7 insertions(+), 2 deletions(-)
Index: linux-2.6-lttng/arch/sh64/kernel/entry.S
===================================================================
--- linux-2.6-lttng.orig/arch/sh64/kernel/entry.S 2007-11-13 09:25:23.000000000 -0500
+++ linux-2.6-lttng/arch/sh64/kernel/entry.S 2007-11-13 09:50:15.000000000 -0500
@@ -1282,7 +1282,7 @@ syscall_allowed:

getcon KCR0, r2
ld.l r2, TI_FLAGS, r4
- movi (1 << TIF_SYSCALL_TRACE), r6
+ movi (_TIF_SYSCALL_TRACE|_TIF_KERNEL_TRACE), r6
and r6, r4, r6
beq/l r6, ZERO, tr0

Index: linux-2.6-lttng/arch/sh64/kernel/sys_sh64.c
===================================================================
--- linux-2.6-lttng.orig/arch/sh64/kernel/sys_sh64.c 2007-11-13 09:25:23.000000000 -0500
+++ linux-2.6-lttng/arch/sh64/kernel/sys_sh64.c 2007-11-13 09:50:15.000000000 -0500
@@ -187,6 +187,8 @@ asmlinkage int sys_ipc(uint call, int fi
version = call >> 16; /* hack for backward compatibility */
call &= 0xffff;

+ trace_mark(kernel_arch_ipc_call, "call %u first %d", call, first);
+
if (call <= SEMCTL)
switch (call) {
case SEMOP:
Index: linux-2.6-lttng/arch/sh64/kernel/process.c
===================================================================
--- linux-2.6-lttng.orig/arch/sh64/kernel/process.c 2007-11-13 09:25:23.000000000 -0500
+++ linux-2.6-lttng/arch/sh64/kernel/process.c 2007-11-13 09:50:15.000000000 -0500
@@ -393,6 +393,7 @@ ATTRIB_NORET void kernel_thread_helper(v
*/
int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags)
{
+ unsigned long pid;
struct pt_regs regs;

memset(&regs, 0, sizeof(regs));
@@ -402,8 +403,10 @@ int kernel_thread(int (*fn)(void *), voi
regs.pc = (unsigned long)kernel_thread_helper;
regs.sr = (1 << 30);

- return do_fork(flags | CLONE_VM | CLONE_UNTRACED, 0,
+ pid = do_fork(flags | CLONE_VM | CLONE_UNTRACED, 0,
&regs, 0, NULL, NULL);
+ trace_mark(kernel_arch_kthread_create, "pid %ld fn %p", pid, fn);
+ return pid;
}

/*
--
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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