From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pf0-x243.google.com (mail-pf0-x243.google.com [IPv6:2607:f8b0:400e:c00::243]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 3wprlt1mc4zDq8B for ; Fri, 16 Jun 2017 16:57:30 +1000 (AEST) Received: by mail-pf0-x243.google.com with SMTP id y7so4440815pfd.3 for ; Thu, 15 Jun 2017 23:57:30 -0700 (PDT) From: Nicholas Piggin To: Don Zickus Cc: Nicholas Piggin , Babu Moger , linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org Subject: [PATCH v4 0/5] Improve watchdog config for arch watchdogs Date: Fri, 16 Jun 2017 16:57:10 +1000 Message-Id: <20170616065715.18390-1-npiggin@gmail.com> List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , This is the latest series to make the hardlockup watchdog more easily replaceable by arch code. The last patch provides some justification for why we want to do this (existing sparc watchdog is another that could benefit). Since last time, we tidied up the Kconfig approach so it was not so jumbled -- Thanks Don and Babu for help and suggestions there. Since last posting the powerpc patch, I re-added the soft-NMI watchdog, but have it using the emergency stack so we can always avoid the process stacks when perf interrupts are soft-masked. I'm not sure of the best strategy to merge this. The powerpc watchdog is too much to carry anywhere but powerpc tree now, and watchdog patches seem to go via Andrew... Thanks, Nick Nicholas Piggin (5): watchdog: remove unused declaration watchdog: introduce arch_touch_nmi_watchdog() watchdog: split up config options watchdog: provide watchdog_reconfigure() for arch watchdogs powerpc/64s: implement arch-specific hardlockup watchdog arch/Kconfig | 23 ++ arch/blackfin/include/asm/nmi.h | 2 + arch/blackfin/kernel/nmi.c | 2 +- arch/mn10300/include/asm/nmi.h | 2 + arch/mn10300/kernel/mn10300-watchdog-low.S | 8 +- arch/mn10300/kernel/mn10300-watchdog.c | 2 +- arch/powerpc/Kconfig | 6 +- arch/powerpc/include/asm/nmi.h | 11 + arch/powerpc/include/asm/smp.h | 2 + arch/powerpc/kernel/Makefile | 1 + arch/powerpc/kernel/exceptions-64s.S | 30 ++- arch/powerpc/kernel/kvm.c | 7 + arch/powerpc/kernel/setup_64.c | 19 -- arch/powerpc/kernel/smp.c | 20 +- arch/powerpc/kernel/watchdog.c | 388 +++++++++++++++++++++++++++++ arch/sparc/include/asm/nmi.h | 1 + arch/sparc/kernel/nmi.c | 6 +- arch/x86/Kconfig | 1 + arch/x86/kernel/apic/hw_nmi.c | 2 +- include/linux/nmi.h | 57 +++-- kernel/Makefile | 2 +- kernel/sysctl.c | 31 ++- kernel/watchdog.c | 268 +++++++++++++------- kernel/watchdog_hld.c | 37 +-- lib/Kconfig.debug | 45 ++-- 25 files changed, 763 insertions(+), 210 deletions(-) create mode 100644 arch/powerpc/kernel/watchdog.c -- 2.11.0