This series is intended for 4.17 adding support for sysfs initiated coredump. This uses new functionality that was added in drivers base. Device drivers can now implement a .coredump() callback upon which a sysfs entry is created when the device is bound to the driver. From user-space a device coredump can be initiated. The easiest way is by going the drivers entry and enter into the bound device folder like this: # cd /sys/bus/pci/drivers/brcmfmac/0000:02:00.0 # echo 1 > coredump # ls /sys/class/devcoredump/ devcd1 disabled # ls -l /sys/class/devcoredump/devcd1/ total 0 -rw------- 1 root root 0 Feb 19 23:49 data lrwxrwxrwx 1 root root 0 Feb 19 23:49 failing_device -> ../../../pci0000:00/0000:00:1c.0/0000:02:00.0 drwxr-xr-x 2 root root 0 Feb 19 23:49 power lrwxrwxrwx 1 root root 0 Feb 19 23:49 subsystem -> ../../../../class/devcoredump -rw-r--r-- 1 root root 4096 Feb 19 23:49 uevent The device driver can implement the .coredump() callback as they like. The use of the dev_coredump api is not enforced although the sysfs entry is only created when CONFIG_DEV_COREDUMP is selected. Apart from brcmfmac, the other drivers used dev_coredump api and had a mechanism in place through debugfs, which is removed in these patches. With these patches initiating the coredump can be done without selecting CONFIG_DEBUGFS. No attempt was made to look for drivers providing some sore of coredump functionality by other means than the dev_coredump api. The first 2 patches apply to the master branch of the wireless-drivers-next repository. The last patch applies to the master branch of the bluetooth-next. Arend van Spriel (3): brcmfmac: add support for sysfs initiated coredump mwifiex: support sysfs initiated device coredump btmrvl: support sysfs initiated firmware coredump drivers/bluetooth/btmrvl_debugfs.c | 31 ---------------------- drivers/bluetooth/btmrvl_drv.h | 2 -- drivers/bluetooth/btmrvl_main.c | 6 ----- drivers/bluetooth/btmrvl_sdio.c | 18 ++++++++----- .../wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c | 1 + .../net/wireless/broadcom/brcm80211/brcmfmac/bus.h | 2 ++ .../wireless/broadcom/brcm80211/brcmfmac/core.c | 7 +++++ .../wireless/broadcom/brcm80211/brcmfmac/pcie.c | 1 + drivers/net/wireless/marvell/mwifiex/debugfs.c | 31 +--------------------- drivers/net/wireless/marvell/mwifiex/pcie.c | 19 +++++++++++-- drivers/net/wireless/marvell/mwifiex/sdio.c | 13 +++++++++ drivers/net/wireless/marvell/mwifiex/usb.c | 14 ++++++++++ 12 files changed, 68 insertions(+), 77 deletions(-) -- 1.9.1
