From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758984Ab0HELJ4 (ORCPT ); Thu, 5 Aug 2010 07:09:56 -0400 Received: from mx1.redhat.com ([209.132.183.28]:31905 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754858Ab0HELJy (ORCPT ); Thu, 5 Aug 2010 07:09:54 -0400 From: Jiri Olsa To: mingo@elte.hu, rostedt@goodmis.org, yhlu.kernel@gmail.com Cc: linux-kernel@vger.kernel.org Subject: [RFC 0/2] apic: tracing IPI events Date: Thu, 5 Aug 2010 13:09:36 +0200 Message-Id: <1281006578-5073-1-git-send-email-jolsa@redhat.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org hi, I'm adding tracing of IPIs to the APIC code by hooking following apic callbacks: void (*send_IPI_mask)(const struct cpumask *mask, int vector); void (*send_IPI_mask_allbutself)(const struct cpumask *mask, int vector); void (*send_IPI_allbutself)(int vector); void (*send_IPI_all)(int vector); void (*send_IPI_self)(int vector); attached patches: - 1/2 apic: adding apic_send_IPI_* methods for apic's IPI callbacks - 2/2 apic,trace: IPI sent trace event. I'm not sure this is the best way, maybe some more general approach might be better. please let me know what you think wbr, jirka --- arch/x86/include/asm/apic.h | 16 +++++++++- arch/x86/include/asm/apic_trace.h | 53 +++++++++++++++++++++++++++++++ arch/x86/include/asm/ipi.h | 4 +- arch/x86/kernel/apic/apic.c | 48 +++++++++++++++++++++++++++- arch/x86/kernel/apic/apic_flat_64.c | 4 +- arch/x86/kernel/apic/hw_nmi.c | 2 +- arch/x86/kernel/apic/io_apic.c | 9 +++-- arch/x86/kernel/apic/nmi.c | 2 +- arch/x86/kernel/apic/probe_64.c | 2 +- arch/x86/kernel/cpu/mcheck/mce-inject.c | 2 +- arch/x86/kernel/cpu/mcheck/mce.c | 2 +- arch/x86/kernel/cpu/perf_event.c | 2 +- arch/x86/kernel/kgdb.c | 2 +- arch/x86/kernel/reboot.c | 2 +- arch/x86/kernel/smp.c | 12 +++--- arch/x86/mm/tlb.c | 2 +- 16 files changed, 139 insertions(+), 25 deletions(-)