diff options
| author | Bryant G. Ly <bryantly@linux.vnet.ibm.com> | 2018-01-05 19:45:47 +0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2018-01-27 12:02:51 +0300 |
| commit | 856e1eb9bdd4bd703907925be112519ff65d991f (patch) | |
| tree | 096824f791fdbc9925aaf032cb9b7f86eafd6cf5 /include/linux/pci.h | |
| parent | 64ba3dc7bf7cb0cbc89821db54edfe5180726fbf (diff) | |
| download | linux-856e1eb9bdd4bd703907925be112519ff65d991f.tar.xz | |
PCI/AER: Add uevents in AER and EEH error/resume
Devices can go offline when erors 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 and
AER events are better propagated to user space for PCI devices in all
arches.
Signed-off-by: Bryant G. Ly <bryantly@linux.vnet.ibm.com>
Signed-off-by: Juan J. Alvarez <jjalvare@linux.vnet.ibm.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Russell Currey <ruscur@russell.cc>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'include/linux/pci.h')
| -rw-r--r-- | include/linux/pci.h | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/include/linux/pci.h b/include/linux/pci.h index e3e94467687a..405630441b74 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -2277,6 +2277,42 @@ static inline bool pci_is_thunderbolt_attached(struct pci_dev *pdev) return false; } +/** + * pci_uevent_ers - emit a uevent during recovery path of pci device + * @pdev: pci device to check + * @err_type: type of error event + * + */ +static inline void pci_uevent_ers(struct pci_dev *pdev, + enum pci_ers_result err_type) +{ + int idx = 0; + char *envp[3]; + + switch (err_type) { + case PCI_ERS_RESULT_NONE: + case PCI_ERS_RESULT_CAN_RECOVER: + envp[idx++] = "ERROR_EVENT=BEGIN_RECOVERY"; + envp[idx++] = "DEVICE_ONLINE=0"; + break; + case PCI_ERS_RESULT_RECOVERED: + envp[idx++] = "ERROR_EVENT=SUCCESSFUL_RECOVERY"; + envp[idx++] = "DEVICE_ONLINE=1"; + break; + case PCI_ERS_RESULT_DISCONNECT: + envp[idx++] = "ERROR_EVENT=FAILED_RECOVERY"; + envp[idx++] = "DEVICE_ONLINE=0"; + break; + default: + break; + } + + if (idx > 0) { + envp[idx++] = NULL; + kobject_uevent_env(&pdev->dev.kobj, KOBJ_CHANGE, envp); + } +} + /* provide the legacy pci_dma_* API */ #include <linux/pci-dma-compat.h> |