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85c323c3e89d6e1b624b839c3325ae072952e545
linux-nvgpu/drivers/gpu/nvgpu/os/linux
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Debarshi Dutta 85c323c3e8 gpu: nvgpu: restrict devfreq during active clk_arb set requests 
Restrict access to devfreq when there are active set requests in the
clk_arbiter. We make the following changes in the patch.

1) Add a global counter in the struct gk20a named clk_arb_global_nr which
is used to track the number of active set requests in the system.

2) Anytime a set request is successfully made by the userspace,
clk_arb_global_nr is incremented by 1 and during the completion of
request(releasing the corresponding file handle), clk_arb_global_nr is
decremented by 1.

3) gk20a_scale_target(invoked by devfreq to set the new frequency based
on load) atomically checks clk_arb_global_nr. If the value = 0, the
code simply continue or else if its > 0, it quits thus making devfreq
requests mutually exclusive with the clk_arbiter.

Bug 2061372

Change-Id: I5d19de03e45520f4ff8fccb97b1f1589d04c8ab8
Signed-off-by: Debarshi Dutta <ddutta@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1790002
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
2018-09-20 10:50:25 -07:00
..
vgpu
gpu: nvgpu: use single lock for gpu power on-off
2018-09-18 10:34:41 -07:00
cde_gm20b.c
gpu: nvgpu: linux: move os ops to a common file
2018-08-29 20:34:34 -07:00
cde_gm20b.h
gpu: nvgpu: linux: move os ops to a common file
2018-08-29 20:34:34 -07:00
cde_gp10b.c
gpu: nvgpu: linux: move os ops to a common file
2018-08-29 20:34:34 -07:00
cde_gp10b.h
gpu: nvgpu: linux: move os ops to a common file
2018-08-29 20:34:34 -07:00
cde.c
gpu: nvgpu: warn if cde map fails
2018-09-10 15:25:18 -07:00
cde.h
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
channel.h
gpu: nvgpu: fix channel include guards
2018-08-30 21:43:01 -07:00
clk.c
gpu: nvgpu: expose linux clock controls via HAL
2018-09-20 10:50:02 -07:00
clk.h
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
comptags.c
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
cond.c
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
ctxsw_trace.c
gpu: nvgpu: move channel header to common
2018-09-05 20:40:32 -07:00
ctxsw_trace.h
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
debug_allocator.c
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
debug_allocator.h
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
debug_bios.c
gpu: nvgpu: add bios debugfs node
2018-06-27 07:30:06 -07:00
debug_bios.h
gpu: nvgpu: add bios debugfs node
2018-06-27 07:30:06 -07:00
debug_cde.c
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
debug_cde.h
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
debug_ce.c
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
debug_ce.h
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
debug_clk_gm20b.c
gpu: nvgpu: restrict devfreq during active clk_arb set requests
2018-09-20 10:50:25 -07:00
debug_clk_gm20b.h
gpu: nvgpu: move gm20b clk debugfs to linux
2018-09-05 04:51:40 -07:00
debug_clk_gp106.c
gpu: nvgpu: move gp106 clk debugfs to linux
2018-09-05 04:51:36 -07:00
debug_clk_gp106.h
gpu: nvgpu: move gp106 clk debugfs to linux
2018-09-05 04:51:36 -07:00
debug_fecs_trace.c
gpu: nvgpu: move fecs trace debugfs to linux
2018-09-09 17:22:24 -07:00
debug_fecs_trace.h
gpu: nvgpu: move fecs trace debugfs to linux
2018-09-09 17:22:24 -07:00
debug_fifo.c
gpu: nvgpu: move channel header to common
2018-09-05 20:40:32 -07:00
debug_fifo.h
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
debug_gr.c
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
debug_gr.h
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
debug_hal.c
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
debug_hal.h
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
debug_kmem.c
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
debug_kmem.h
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
debug_ltc.c
gpu: nvgpu: debugfs node to enable/disable ltc_illegal_compstat intr
2018-07-24 16:10:58 -07:00
debug_ltc.h
gpu: nvgpu: debugfs node to enable/disable ltc_illegal_compstat intr
2018-07-24 16:10:58 -07:00
debug_pmgr.c
gpu: nvgpu: move pmgr debugfs to linux
2018-09-05 04:51:50 -07:00
debug_pmgr.h
gpu: nvgpu: move pmgr debugfs to linux
2018-09-05 04:51:50 -07:00
debug_pmu.c
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
debug_pmu.h
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
debug_sched.c
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
debug_sched.h
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
debug_therm_gp106.c
gpu: nvgpu: move therm debugfs to linux
2018-09-05 04:51:43 -07:00
debug_therm_gp106.h
gpu: nvgpu: move therm debugfs to linux
2018-09-05 04:51:43 -07:00
debug_xve.c
gpu: nvgpu: add missing timer includes
2018-08-24 14:57:57 -07:00
debug_xve.h
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
debug.c
gpu: nvgpu: debugfs node to enable/disable ltc_illegal_compstat intr
2018-07-24 16:10:58 -07:00
dmabuf_vidmem.c
gpu: nvpgu: Rename Linux specific vidmem code
2018-07-05 21:48:56 -07:00
dmabuf_vidmem.h
gpu: nvpgu: Rename Linux specific vidmem code
2018-07-05 21:48:56 -07:00
dmabuf.c
gpu: nvgpu: clean up channel header includes
2018-08-24 14:57:44 -07:00
dmabuf.h
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
driver_common.c
gpu: nvgpu: restrict devfreq during active clk_arb set requests
2018-09-20 10:50:25 -07:00
driver_common.h
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
dt.c
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
ecc_sysfs.c
gpu: nvgpu: pass correct argument to sysfs_attr_init
2018-08-07 01:45:02 -07:00
firmware.c
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
fuse.c
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
intr.c
gpu: nvgpu: Move MC HAL to common
2018-09-13 19:18:24 -07:00
intr.h
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
io_usermode.c
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
io.c
gpu: nvgpu: Add L2 register read-backs following writes
2018-07-14 15:36:53 -07:00
ioctl_as.c
gpu: nvgpu: move channel header to common
2018-09-05 20:40:32 -07:00
ioctl_as.h
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
ioctl_channel.c
gpu: nvgpu: move channel_sync_gk20a.* to common directory
2018-09-17 23:39:24 -07:00
ioctl_channel.h
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
ioctl_clk_arb.c
gpu: nvgpu: restrict devfreq during active clk_arb set requests
2018-09-20 10:50:25 -07:00
ioctl_ctrl.c
gpu: nvgpu: move channel header to common
2018-09-05 20:40:32 -07:00
ioctl_ctrl.h
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
ioctl_dbg.c
gpu: nvgpu: Remove NVGPU_DBG_GPU_IOCTL_WRITE_SINGLE_SM_ERROR_STATE API
2018-09-19 15:53:56 -07:00
ioctl_dbg.h
gpu: nvgpu: Clean up ioctl_dbg.h
2018-07-05 21:48:44 -07:00
ioctl_tsg.c
gpu: nvgpu: move channel header to common
2018-09-05 20:40:32 -07:00
ioctl_tsg.h
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
ioctl.c
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
ioctl.h
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
kmem_priv.h
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
kmem.c
gpu: nvgpu: fix MISRA Rule 11.6 issue with _THIS_IP_
2018-07-30 19:55:16 -07:00
linux-channel.c
gpu: nvgpu: move channel header to common
2018-09-05 20:40:32 -07:00
linux-dma.c
gpu: nvgpu: Move common DMA code to common/mm
2018-09-05 20:38:42 -07:00
log.c
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
ltc.c
gpu: nvgpu: support allocating CBC in vidmem
2018-09-06 16:12:24 -07:00
module_usermode.c
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
module_usermode.h
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
module.c
gpu: nvgpu: use single lock for gpu power on-off
2018-09-18 10:34:41 -07:00
module.h
gpu: nvgpu: use devm variants to ioremap
2018-07-06 13:24:45 -07:00
nvgpu_mem.c
gpu: nvgpu: changing page_idx from int to u64
2018-09-06 21:42:11 -07:00
nvhost_priv.h
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
nvhost.c
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
nvlink.c
gpu: nvgpu: shutdown nvlink in driver remove
2018-07-26 00:06:07 -07:00
nvlink.h
gpu: nvgpu: shutdown nvlink in driver remove
2018-07-26 00:06:07 -07:00
os_fence_android_sema.c
gpu: nvgpu: move channel_sync_gk20a.* to common directory
2018-09-17 23:39:24 -07:00
os_fence_android_syncpt.c
gpu: nvgpu: move channel_sync_gk20a.* to common directory
2018-09-17 23:39:24 -07:00
os_fence_android.c
gpu: nvgpu: move channel header to common
2018-09-05 20:40:32 -07:00
os_linux.h
gpu: nvgpu: move fecs trace debugfs to linux
2018-09-09 17:22:24 -07:00
os_ops_gm20b.c
gpu: nvgpu: move gm20b clk debugfs to linux
2018-09-05 04:51:40 -07:00
os_ops_gm20b.h
gpu: nvgpu: linux: move os ops to a common file
2018-08-29 20:34:34 -07:00
os_ops_gp10b.c
gpu: nvgpu: move fecs trace debugfs to linux
2018-09-09 17:22:24 -07:00
os_ops_gp10b.h
gpu: nvgpu: linux: move os ops to a common file
2018-08-29 20:34:34 -07:00
os_ops_gp106.c
gpu: nvgpu: move fecs trace debugfs to linux
2018-09-09 17:22:24 -07:00
os_ops_gp106.h
gpu: nvgpu: move gp106 clk debugfs to linux
2018-09-05 04:51:36 -07:00
os_ops_gv11b.c
gpu: nvgpu: move fecs trace debugfs to linux
2018-09-09 17:22:24 -07:00
os_ops_gv11b.h
gpu: nvgpu: move fecs trace debugfs to linux
2018-09-09 17:22:24 -07:00
os_ops_gv100.c
gpu: nvgpu: move fecs trace debugfs to linux
2018-09-09 17:22:24 -07:00
os_ops_gv100.h
gpu: nvgpu: move gp106 clk debugfs to linux
2018-09-05 04:51:36 -07:00
os_ops.c
gpu: nvgpu: move fecs trace debugfs to linux
2018-09-09 17:22:24 -07:00
os_ops.h
gpu: nvgpu: linux: move os ops to a common file
2018-08-29 20:34:34 -07:00
os_sched.c
gpu: nvgpu: add API to print process name
2018-06-19 10:43:10 -07:00
pci_usermode.c
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
pci_usermode.h
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
pci.c
gpu: nvgpu: Use NVLINK config instead of has_physical_mode
2018-08-14 21:25:05 -07:00
pci.h
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
platform_gk20a_tegra.c
gpu: nvgpu: Force the PMU VM to use 128K large pages (gm20b)
2018-08-21 15:44:02 -07:00
platform_gk20a_tegra.h
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
platform_gk20a.h
gpu: nvgpu: expose linux clock controls via HAL
2018-09-20 10:50:02 -07:00
platform_gp10b_tegra.c
gpu: nvgpu: add igpu support for clk_arbiter.
2018-09-20 10:50:12 -07:00
platform_gp10b_tegra.h
gpu: nvgpu: rework ecc structure and sysfs
2018-07-19 16:43:58 -07:00
platform_gp10b.h
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
platform_gv11b_tegra.c
gpu: nvgpu: add igpu support for clk_arbiter.
2018-09-20 10:50:12 -07:00
rwsem.c
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
scale.c
gpu: nvgpu: restrict devfreq during active clk_arb set requests
2018-09-20 10:50:25 -07:00
scale.h
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
sched.c
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
sched.h
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
sim_pci.c
gk20a: nvgpu: Remove io.h dependency from gk20a.h
2018-07-30 11:24:06 -07:00
sim.c
gpu: nvgpu: use devm variants to ioremap
2018-07-06 13:24:45 -07:00
soc.c
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
sync_sema_android.c
gpu: nvgpu: changing page_idx from int to u64
2018-09-06 21:42:11 -07:00
sync_sema_android.h
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
sysfs.c
gpu: nvgpu: add gpu_powered_on sysfs
2018-09-06 21:33:30 -07:00
sysfs.h
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
thread.c
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
timers.c
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
vm.c
gpu: nvgpu: remove utils.h from gk20a.h
2018-08-10 18:11:26 -07:00