From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756749AbXLFDBA (ORCPT ); Wed, 5 Dec 2007 22:01:00 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754677AbXLFDAI (ORCPT ); Wed, 5 Dec 2007 22:00:08 -0500 Received: from smtp.polymtl.ca ([132.207.4.11]:35379 "EHLO smtp.polymtl.ca" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752049AbXLFDAE (ORCPT ); Wed, 5 Dec 2007 22:00:04 -0500 Message-Id: <20071206025946.819429839@polymtl.ca> References: <20071206025650.451824066@polymtl.ca> User-Agent: quilt/0.46-1 Date: Wed, 05 Dec 2007 21:56:55 -0500 From: Mathieu Desnoyers To: akpm@linux-foundation.org, Ingo Molnar , linux-kernel@vger.kernel.org Cc: Mathieu Desnoyers Subject: [patch-early-RFC 05/10] LTTng instrumentation PPC Content-Disposition: inline; filename=lttng-instrumentation-ppc.patch X-Poly-FromMTA: (dijkstra.casi.polymtl.ca [132.207.72.10]) at Thu, 6 Dec 2007 02:59:49 +0000 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Signed-off-by: Mathieu Desnoyers --- arch/ppc/kernel/misc.S | 2 +- arch/ppc/kernel/time.c | 4 ++++ arch/ppc/kernel/traps.c | 3 +++ arch/ppc/mm/fault.c | 3 +++ 4 files changed, 11 insertions(+), 1 deletion(-) Index: linux-2.6-lttng/arch/ppc/kernel/misc.S =================================================================== --- linux-2.6-lttng.orig/arch/ppc/kernel/misc.S 2007-11-13 09:25:23.000000000 -0500 +++ linux-2.6-lttng/arch/ppc/kernel/misc.S 2007-11-13 09:50:11.000000000 -0500 @@ -868,7 +868,7 @@ _GLOBAL(_get_SP) * 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/ppc/kernel/time.c =================================================================== --- linux-2.6-lttng.orig/arch/ppc/kernel/time.c 2007-11-13 09:25:23.000000000 -0500 +++ linux-2.6-lttng/arch/ppc/kernel/time.c 2007-11-13 09:50:11.000000000 -0500 @@ -139,7 +139,10 @@ void timer_interrupt(struct pt_regs * re if (atomic_read(&ppc_n_lost_interrupts) != 0) do_IRQ(regs); + trace_mark(kernel_arch_trap_entry, "trap_id %ld ip #p%ld", + regs->trap, instruction_pointer(regs)); old_regs = set_irq_regs(regs); + irq_enter(); while ((next_dec = tb_ticks_per_jiffy - tb_delta(&jiffy_stamp)) <= 0) { @@ -192,6 +195,7 @@ void timer_interrupt(struct pt_regs * re irq_exit(); set_irq_regs(old_regs); + trace_mark(kernel_arch_trap_exit, MARK_NOARGS); } /* Index: linux-2.6-lttng/arch/ppc/kernel/traps.c =================================================================== --- linux-2.6-lttng.orig/arch/ppc/kernel/traps.c 2007-11-13 09:25:23.000000000 -0500 +++ linux-2.6-lttng/arch/ppc/kernel/traps.c 2007-11-13 09:50:11.000000000 -0500 @@ -108,11 +108,14 @@ void _exception(int signr, struct pt_reg debugger(regs); die("Exception in kernel mode", regs, signr); } + trace_mark(kernel_arch_trap_entry, "trap_id %ld ip #p%ld", regs->trap, + instruction_pointer(regs)); info.si_signo = signr; info.si_errno = 0; info.si_code = code; info.si_addr = (void __user *) addr; force_sig_info(signr, &info, current); + trace_mark(kernel_arch_trap_exit, MARK_NOARGS); /* * Init gets no signals that it doesn't have a handler for. Index: linux-2.6-lttng/arch/ppc/mm/fault.c =================================================================== --- linux-2.6-lttng.orig/arch/ppc/mm/fault.c 2007-11-13 09:25:23.000000000 -0500 +++ linux-2.6-lttng/arch/ppc/mm/fault.c 2007-11-13 09:50:11.000000000 -0500 @@ -250,7 +250,10 @@ good_area: * the fault. */ survive: + trace_mark(kernel_arch_trap_entry, "trap_id %ld ip #p%ld", + regs->trap, instruction_pointer(regs)); fault = handle_mm_fault(mm, vma, address, is_write); + trace_mark(kernel_arch_trap_exit, MARK_NOARGS); if (unlikely(fault & VM_FAULT_ERROR)) { if (fault & 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