From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 98018C43381 for ; Mon, 1 Apr 2019 18:19:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6EE8A20883 for ; Mon, 1 Apr 2019 18:19:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729019AbfDASTa (ORCPT ); Mon, 1 Apr 2019 14:19:30 -0400 Received: from mx1.redhat.com ([209.132.183.28]:51326 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728663AbfDAST3 (ORCPT ); Mon, 1 Apr 2019 14:19:29 -0400 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 4F75C5944D; Mon, 1 Apr 2019 18:19:29 +0000 (UTC) Received: from localhost.default (ovpn-116-31.phx2.redhat.com [10.3.116.31]) by smtp.corp.redhat.com (Postfix) with ESMTP id 8B68E5D6A6; Mon, 1 Apr 2019 18:19:27 +0000 (UTC) From: Daniel Bristot de Oliveira To: Linux Kernel Mailing List Cc: Thomas Gleixner , Ingo Molnar , Peter Zijlstra , Steven Rostedt , Andy Lutomirski , Clark Williams , x86@kernel.org Subject: [PATCH V2 1/2] trace,x86: Add external_interrupts to the irq_vectors class Date: Mon, 1 Apr 2019 20:19:24 +0200 Message-Id: <833f2a192b491649e4d46cec51028d07c96bbf5e.1554142415.git.bristot@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.39]); Mon, 01 Apr 2019 18:19:29 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Currently, the irq_vectors is showing the entry and exit events for the interrupts of the architecture, but not for external interrupts. Adds the tracepoints for external interrupts. Example of output: -0 [000] d.h. 102.890935: external_interrupt_entry: vector=35 -0 [000] d.h. 102.890960: external_interrupt_exit: vector=35 Changes from V1: - Fix a compilation problem when CONFIG_X86_LOCAL_APIC is not set (kbuild test) Signed-off-by: Daniel Bristot de Oliveira Cc: Thomas Gleixner Cc: Ingo Molnar Cc: Peter Zijlstra Cc: Steven Rostedt Cc: Andy Lutomirski Cc: Clark Williams Cc: linux-kernel@vger.kernel.org Cc: x86@kernel.org --- arch/x86/include/asm/trace/irq_vectors.h | 10 +++++++++- arch/x86/kernel/irq.c | 2 ++ 2 files changed, 11 insertions(+), 1 deletion(-) diff --git a/arch/x86/include/asm/trace/irq_vectors.h b/arch/x86/include/asm/trace/irq_vectors.h index 33b9d0f0aafe..38e73d56db70 100644 --- a/arch/x86/include/asm/trace/irq_vectors.h +++ b/arch/x86/include/asm/trace/irq_vectors.h @@ -138,6 +138,12 @@ DEFINE_IRQ_VECTOR_EVENT(deferred_error_apic); DEFINE_IRQ_VECTOR_EVENT(thermal_apic); #endif +/* + * external_interrupt - called when entering/exiting from regular device + * interrupt vector handler. + */ +DEFINE_IRQ_VECTOR_EVENT(external_interrupt); + TRACE_EVENT(vector_config, TP_PROTO(unsigned int irq, unsigned int vector, @@ -385,7 +391,9 @@ TRACE_EVENT(vector_free_moved, __entry->is_managed) ); - +#else /* CONFIG_X86_LOCAL_APIC */ +#define trace_external_interrupt_entry(vector) do {} while(0) +#define trace_external_interrupt_exit(vector) do {} while(0) #endif /* CONFIG_X86_LOCAL_APIC */ #undef TRACE_INCLUDE_PATH diff --git a/arch/x86/kernel/irq.c b/arch/x86/kernel/irq.c index 59b5f2ea7c2f..715afe3a4f24 100644 --- a/arch/x86/kernel/irq.c +++ b/arch/x86/kernel/irq.c @@ -237,6 +237,7 @@ __visible unsigned int __irq_entry do_IRQ(struct pt_regs *regs) unsigned vector = ~regs->orig_ax; entering_irq(); + trace_external_interrupt_entry(vector); /* entering_irq() tells RCU that we're not quiescent. Check it. */ RCU_LOCKDEP_WARN(!rcu_is_watching(), "IRQ failed to wake up RCU"); @@ -255,6 +256,7 @@ __visible unsigned int __irq_entry do_IRQ(struct pt_regs *regs) } } + trace_external_interrupt_exit(vector); exiting_irq(); set_irq_regs(old_regs); -- 2.19.0