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b40f4757da
linux/drivers
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Christoph Lameter b40f4757da IB/core: Make device counter infrastructure dynamic 
In practice, each RDMA device has a unique set of counters that the
hardware implements.  Having a central set of counters that they must
all adhere to is limiting and causes many useful counters to not be
available.

Therefore we create a dynamic counter registration infrastructure.

The driver must implement a stats structure allocation routine, in
which the driver must place the directory name it wants, a list of
names for all of the counters, an array of u64 counters themselves,
plus a few generic configuration options.

We then implement a core routine to create a sysfs file for each
of the named stats elements, and a core routine to retrieve the
stats when any of the sysfs attribute files are read.

To avoid excessive beating on the stats generation routine in the
drivers, the core code also caches the stats for a short period of
time so that someone attempting to read all of the stats in a
given device's directory will not result in a stats generation
call per file read.

Future work will attempt to standardize just the shared stats
elements, and possibly add a method to get the stats via netlink
in addition to sysfs.

Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Mark Bloch <markb@mellanox.com>
Reviewed-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
[ Add caching, make structure names more informative, add i40iw support,
  other significant rewrites from the original patch ]
2016-05-26 12:52:51 -04:00
..
accessibility
acpi Merge branch 'acpi-processor' 2016-04-02 01:17:36 +02:00
amba
android
ata Merge branch 'for-4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata 2016-03-18 20:06:46 -07:00
atm Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2016-03-17 21:38:27 -07:00
auxdisplay
base PM / wakeirq: fix wakeirq setting after wakup re-configuration from sysfs 2016-04-07 22:23:47 +02:00
bcma bcma: fix building without OF_IRQ 2016-03-23 17:52:10 +02:00
block Merge branch 'for-linus' of git://git.kernel.dk/linux-block 2016-04-15 15:44:10 -07:00
bluetooth Bluetooth: btmrvl_sdio: fix firmware activation failure 2016-03-10 19:51:29 +01:00
bus mvebu fixes for 4.6 (part 1) 2016-04-12 12:35:07 -07:00
cdrom
char hwrng: bcm63xx - fix device tree compilation 2016-04-05 20:23:11 +08:00
clk clk: qcom: ipq4019: add some fixed clocks for ddrppl and fepll 2016-03-29 16:31:16 -07:00
clocksource Merge branches 'perf-urgent-for-linus', 'smp-urgent-for-linus' and 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2016-04-23 11:45:52 -07:00
connector
cpufreq Merge branch 'pm-cpufreq-fixes' 2016-04-21 20:57:46 +02:00
cpuidle cpuidle: menu: Fall back to polling if next timer event is near 2016-03-21 15:50:28 +01:00
crypto crypto: talitos - fix AEAD tcrypt tests 2016-04-20 17:42:49 +08:00
dca
devfreq PM / devfreq: Spelling s/frequnecy/frequency/ 2016-03-17 02:30:16 +01:00
dio
dma Merge branch 'fix/edma' into fixes 2016-04-16 22:52:03 +05:30
dma-buf dma-buf: Update docs for SYNC ioctl 2016-03-21 09:26:45 +01:00
edac x86 EDAC, sb_edac.c: Take account of channel hashing when needed 2016-04-22 10:10:01 +02:00
eisa
extcon extcon: palmas: Drop stray IRQF_EARLY_RESUME flag 2016-04-04 08:32:45 +09:00
firewire IEEE 1394 subsystem patch: 2016-03-25 08:52:25 -07:00
firmware Here are the latest bug fixes for ARM SoCs, mostly addressing 2016-04-26 16:17:01 -07:00
fmc
fpga
gpio gpio: pca953x: Use correct u16 value for register word write 2016-04-08 11:49:47 +02:00
gpu Merge branch 'drm-fixes-4.6' of git://people.freedesktop.org/~agd5f/linux into drm-fixes 2016-04-22 10:39:26 +10:00
hid Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid 2016-04-11 12:31:09 -07:00
hsi
hv Char/Misc patches for 4.6-rc1 2016-03-17 13:47:50 -07:00
hwmon hwmon: (max1111) Return -ENODEV from max1111_read_channel if not instantiated 2016-03-27 10:37:48 -07:00
hwspinlock
hwtracing
i2c i2c: exynos5: Fix possible ABBA deadlock by keeping I2C clock prepared 2016-04-22 15:31:54 +02:00
ide ide: palm_bk3710: test clock rate to avoid division by 0 2016-03-20 16:59:27 -04:00
idle intel_idle: Add KBL support 2016-04-07 22:11:08 +02:00
iio Second set of IIO fixes for the 4.6 cycle. 2016-04-04 13:45:10 -07:00
infiniband IB/core: Make device counter infrastructure dynamic 2016-05-26 12:52:51 -04:00
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2016-04-23 11:04:26 -07:00
iommu iommu/arm-smmu: Don't allocate resources for bypass domains 2016-04-21 16:47:32 +02:00
ipack
irqchip irqchip/mips-gic: Don't overrun pcpu_masks array 2016-04-21 21:04:29 +02:00
isdn mISDN: Fixing missing validation in base_sock_bind() 2016-04-13 23:00:50 -04:00
leds platform-drivers-x86 for 4.6-1 2016-03-23 17:20:59 -07:00
lguest lguest, x86/entry/32: Fix handling of guest syscalls using interrupt gates 2016-04-01 08:58:13 +02:00
lightnvm lightnvm: do not load L2P table if not supported 2016-03-18 18:10:38 -07:00
macintosh
mailbox Merge branch 'mailbox-devel' of git://git.linaro.org/landing-teams/working/fujitsu/integration 2016-04-14 18:40:47 -07:00
mcb
md dm cache metadata: fix cmd_read_lock() acquiring write lock 2016-04-17 11:24:46 -04:00
media media fixes for v4.6-rc2 2016-04-05 06:47:50 -07:00
memory MTD updates for v4.6 2016-03-24 19:57:15 -07:00
memstick drivers/memstick/host/r592.c: avoid gcc-6 warning 2016-03-25 16:37:42 -07:00
message
mfd - New Drivers 2016-03-18 10:15:11 -07:00
misc lkdtm: do not leak free page on kmalloc failure 2016-04-06 16:22:25 -07:00
mmc mmc: tegra: Disable UHS-I modes for Tegra124 2016-04-14 11:40:01 +02:00
mtd One MTD fix for v4.6-rc4: 2016-04-15 15:25:09 -07:00
net net/mlx5_core: Use tasklet for user-space CQ completion events 2016-05-18 10:45:49 -04:00
nfc Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2016-03-19 10:05:34 -07:00
ntb NTB: Remove _addr functions from ntb_hw_amd 2016-03-26 11:44:33 -04:00
nubus
nvdimm libnvdimm, pmem: clarify the write+clear_poison+write flow 2016-04-15 14:59:41 -06:00
nvme NVMe: Always use MSI/MSI-x interrupts 2016-04-14 14:04:50 -06:00
nvmem
of DeviceTree updates for 4.6: 2016-03-19 15:15:07 -07:00
oprofile mm, fs: get rid of PAGE_CACHE_* and page_cache_{get,release} macros 2016-04-04 10:41:08 -07:00
parisc PCI changes for the v4.6 merge window: 2016-03-16 14:45:55 -07:00
parport
pci PCI updates for v4.6: 2016-04-18 19:52:47 -07:00
pcmcia pcmcia: db1xxx_ss: fix last irq_to_gpio user 2016-03-29 22:48:53 +02:00
perf drivers/perf: arm-pmu: fix RCU usage on pmu resume from low-power 2016-04-21 15:03:06 +01:00
phy phy: rockchip-emmc: should be a child device of the GRF 2016-04-13 18:33:05 +05:30
pinctrl pinctrl: single: Fix pcs_parse_bits_in_pinctrl_entry to use __ffs than ffs 2016-04-15 11:26:55 +02:00
platform platform-drivers-x86 for 4.6-3 2016-04-27 08:57:11 -07:00
pnp
power Power management and ACPI material for v4.6-rc1, part 2 2016-03-25 16:55:37 -07:00
powercap powercap: intel_rapl: Add missing Haswell model 2016-04-05 03:44:48 +02:00
pps
ps3
ptp Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2016-03-15 12:13:56 -07:00
pwm pwm: fsl-ftm: Use flat regmap cache 2016-04-14 16:54:00 +02:00
rapidio Convert straggling drivers to new six-argument get_user_pages() 2016-04-02 18:35:05 -05:00
ras
regulator - New Drivers 2016-03-18 10:15:11 -07:00
remoteproc remoteproc: st: fix check of syscon_regmap_lookup_by_phandle() return value 2016-03-28 16:19:00 -07:00
reset
rpmsg
rtc rtc: ds1307: Use irq when available for wakeup-source device 2016-04-21 23:21:00 +02:00
s390 s390/dcssblk: fix possible deadlock in remove vs. per-device attributes 2016-04-15 18:01:44 +02:00
sbus
scsi cxgbi: fix uninitialized flowi6 2016-04-25 16:20:49 -04:00
sfi
sh
sn
soc Revert "soc: mediatek: SCPSYS: Fix double enabling of regulators" 2016-04-13 11:55:08 +02:00
spi Merge remote-tracking branches 'spi/fix/omap2' and 'spi/fix/rockchip' into spi-linus 2016-04-04 10:05:49 -07:00
spmi
ssb
staging IB/hfi1: Move driver out of staging 2016-05-26 11:35:14 -04:00
target target: enhance and export target_alloc_sgl/target_free_sgl 2016-05-13 13:37:19 -04:00
tc
thermal thermal: fix Mediatek thermal controller build 2016-04-20 21:13:21 -07:00
thunderbolt
tty devpts: more pty driver interface cleanups 2016-04-26 15:47:32 -07:00
uio
usb usb: gadget: f_fs: Fix use-after-free 2016-04-20 10:38:06 +03:00
uwb
vfio VFIO updates for v4.6-rc1 2016-03-17 13:05:09 -07:00
vhost Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending 2016-03-22 12:41:14 -07:00
video omapfb: panel-sharp-ls037v7dw01: fix check of gpio_to_desc() return value 2016-04-18 12:18:37 +03:00
virt
virtio virtio: virtio 1.0 cs04 spec compliance for reset 2016-04-07 15:16:39 +03:00
vlynq
vme
w1
watchdog hpwdt: use nmi_panic() when kernel panics in NMI handler 2016-03-22 15:36:02 -07:00
xen xen/events: Mask a moving irq 2016-04-04 11:18:00 +01:00
zorro
Kconfig
Makefile