From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from e23smtp07.au.ibm.com (e23smtp07.au.ibm.com [202.81.31.140]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 6B4131A0A07 for ; Thu, 11 Dec 2014 14:29:03 +1100 (AEDT) Received: from /spool/local by e23smtp07.au.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Thu, 11 Dec 2014 13:29:02 +1000 Received: from d23relay10.au.ibm.com (d23relay10.au.ibm.com [9.190.26.77]) by d23dlp02.au.ibm.com (Postfix) with ESMTP id DBEC42BB004D for ; Thu, 11 Dec 2014 14:28:59 +1100 (EST) Received: from d23av02.au.ibm.com (d23av02.au.ibm.com [9.190.235.138]) by d23relay10.au.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id sBB3SxSG30277786 for ; Thu, 11 Dec 2014 14:28:59 +1100 Received: from d23av02.au.ibm.com (localhost [127.0.0.1]) by d23av02.au.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id sBB3Swol020710 for ; Thu, 11 Dec 2014 14:28:58 +1100 From: Gavin Shan To: linuxppc-dev@lists.ozlabs.org Subject: [PATCH 1/2] powerpc/eeh: Introduce flag EEH_PE_REMOVED Date: Thu, 11 Dec 2014 14:28:55 +1100 Message-Id: <1418268536-15002-1-git-send-email-gwshan@linux.vnet.ibm.com> Cc: grimm@linux.vnet.ibm.com, Gavin Shan List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , The conditions that one specific PE's frozen count exceeds the maximal allowed times (EEH_MAX_ALLOWED_FREEZES) and it's in isolated or recovery state indicate the PE was removed permanently implicitly. The patch introduces flag EEH_PE_REMOVED to indicate that explicitly so that we don't depend on the fixed maximal allowed times, which can be varied as we do in subsequent patch. Flag EEH_PE_REMOVED is expected to be marked for the PE whose frozen count exceeds the maximal allowed times, or just failed from recovery. Requested-by: Ryan Grimm Signed-off-by: Gavin Shan --- arch/powerpc/include/asm/eeh.h | 1 + arch/powerpc/kernel/eeh_driver.c | 2 +- arch/powerpc/kernel/eeh_pe.c | 6 ++---- 3 files changed, 4 insertions(+), 5 deletions(-) diff --git a/arch/powerpc/include/asm/eeh.h b/arch/powerpc/include/asm/eeh.h index 9c11d1e..3e4dd34 100644 --- a/arch/powerpc/include/asm/eeh.h +++ b/arch/powerpc/include/asm/eeh.h @@ -78,6 +78,7 @@ struct device_node; #define EEH_PE_KEEP (1 << 8) /* Keep PE on hotplug */ #define EEH_PE_CFG_RESTRICTED (1 << 9) /* Block config on error */ +#define EEH_PE_REMOVED (1 << 10) /* Removed permanently */ struct eeh_pe { int type; /* PE type: PHB/Bus/Device */ diff --git a/arch/powerpc/kernel/eeh_driver.c b/arch/powerpc/kernel/eeh_driver.c index b17e793..ac00672 100644 --- a/arch/powerpc/kernel/eeh_driver.c +++ b/arch/powerpc/kernel/eeh_driver.c @@ -806,7 +806,7 @@ perm_error: eeh_pe_dev_traverse(pe, eeh_report_failure, NULL); /* Mark the PE to be removed permanently */ - pe->freeze_count = EEH_MAX_ALLOWED_FREEZES + 1; + eeh_pe_state_mark(pe, EEH_PE_REMOVED); /* * Shut down the device drivers for good. We mark diff --git a/arch/powerpc/kernel/eeh_pe.c b/arch/powerpc/kernel/eeh_pe.c index fa950fb..1e4946c 100644 --- a/arch/powerpc/kernel/eeh_pe.c +++ b/arch/powerpc/kernel/eeh_pe.c @@ -526,8 +526,7 @@ static void *__eeh_pe_state_mark(void *data, void *flag) struct pci_dev *pdev; /* Keep the state of permanently removed PE intact */ - if ((pe->freeze_count > EEH_MAX_ALLOWED_FREEZES) && - (state & (EEH_PE_ISOLATED | EEH_PE_RECOVERING))) + if (pe->state & EEH_PE_REMOVED) return NULL; pe->state |= state; @@ -600,8 +599,7 @@ static void *__eeh_pe_state_clear(void *data, void *flag) struct pci_dev *pdev; /* Keep the state of permanently removed PE intact */ - if ((pe->freeze_count > EEH_MAX_ALLOWED_FREEZES) && - (state & EEH_PE_ISOLATED)) + if (pe->state & EEH_PE_REMOVED) return NULL; pe->state &= ~state; -- 1.8.3.2