From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Return-Path: Subject: Re: [PATCH v1 2/7] powerpc/kernel: Add uevents in EEH error/resume To: "Bryant G. Ly" , benh@kernel.crashing.org, paulus@samba.org, mpe@ellerman.id.au Cc: seroyer@linux.vnet.ibm.com, jjalvare@linux.vnet.ibm.com, alex.williamson@redhat.com, helgaas@kernel.org, ruscur@russell.cc, linux-pci@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, bodong@mellanox.com, eli@mellanox.com, saeedm@mellanox.com References: <20171213153242.98015-1-bryantly@linux.vnet.ibm.com> <20171213153242.98015-3-bryantly@linux.vnet.ibm.com> From: Alexey Kardashevskiy Message-ID: <79cea2a4-510d-37b5-0892-c87ffd0221b4@ozlabs.ru> Date: Mon, 18 Dec 2017 14:54:35 +1100 MIME-Version: 1.0 In-Reply-To: <20171213153242.98015-3-bryantly@linux.vnet.ibm.com> Content-Type: text/plain; charset=utf-8 List-ID: On 14/12/17 02:32, Bryant G. Ly wrote: > Devices can go offline when EEH is reported. This patch adds > a change to the kernel object and lets udev know of error. > When device resumes a change is also set reporting device as > online. Therefore, EEH events are better propagated to user > space for devices in powerpc arch. > > Signed-off-by: Bryant G. Ly > Signed-off-by: Juan J. Alvarez > --- > arch/powerpc/kernel/eeh_driver.c | 5 ++++- > 1 file changed, 4 insertions(+), 1 deletion(-) > > diff --git a/arch/powerpc/kernel/eeh_driver.c b/arch/powerpc/kernel/eeh_driver.c > index 3c0fa99c5533..c61bf770282b 100644 > --- a/arch/powerpc/kernel/eeh_driver.c > +++ b/arch/powerpc/kernel/eeh_driver.c > @@ -204,6 +204,7 @@ static void *eeh_report_error(void *data, void *userdata) > struct pci_dev *dev = eeh_dev_to_pci_dev(edev); > enum pci_ers_result rc, *res = userdata; > struct pci_driver *driver; > + char *envp[] = {"EVENT=EEH_ERROR", "ONLINE=0", NULL}; scripts/checkpatch.pl: WARNING: char * array declaration might be better as static const #27: FILE: arch/powerpc/kernel/eeh_driver.c:207: + char *envp[] = {"EVENT=EEH_ERROR", "ONLINE=0", NULL}; > > if (!dev || eeh_dev_removed(edev) || eeh_pe_passed(edev->pe)) > return NULL; > @@ -228,6 +229,7 @@ static void *eeh_report_error(void *data, void *userdata) > > edev->in_error = true; > eeh_pcid_put(dev); > + kobject_uevent_env(&dev->dev.kobj, KOBJ_CHANGE, envp); > return NULL; > } > > @@ -358,6 +360,7 @@ static void *eeh_report_resume(void *data, void *userdata) > struct pci_dev *dev = eeh_dev_to_pci_dev(edev); > bool was_in_error; > struct pci_driver *driver; > + char *envp[] = {"EVENT=EEH_RESUME", "ONLINE=1", NULL}; WARNING: char * array declaration might be better as static const #43: FILE: arch/powerpc/kernel/eeh_driver.c:363: + char *envp[] = {"EVENT=EEH_RESUME", "ONLINE=1", NULL}; > > if (!dev || eeh_dev_removed(edev) || eeh_pe_passed(edev->pe)) > return NULL; > @@ -379,8 +382,8 @@ static void *eeh_report_resume(void *data, void *userdata) > } > > driver->err_handler->resume(dev); > - Unnecessary change. > eeh_pcid_put(dev); > + kobject_uevent_env(&dev->dev.kobj, KOBJ_CHANGE, envp); > return NULL; > } > > -- Alexey