On 2016年09月05日 06:09, Heiko Stuebner wrote:
Hi Caesar,
Am Samstag, 3. September 2016, 08:13:17 CEST schrieb Caesar Wang:
Heiko,
What do you think of it?
Maybe I need re-update these patches on next kernel, and re-test them.
I checked linux-next and the underlying changes seem to all have gone in now,
so we should be fine.
Updating the patches would be cool. I tried applying them to my dts64 branch
just now, but they don't apply cleanly anymore due to other changes going in
before.
When you check against linux-next, please take into account that there is no
new linux-next since 20160825 and 20160905 is the next planned linux-next
release (probably Stephen being on holiday).
I will update/resend them base on your v4.9-armsoc/dts64 branch. (Wait a
moment to retest them)
Thanks.
Thanks
Heiko
On 2016年07月06日 16:05, Caesar Wang wrote:
Hello Heiko, Marc & ARM guys
When Jay first submitted the rk3399.dtsi upstream
<https://patchwork.kernel.org/patch/8885821/> he had the PMU node in
there,
but then took it out because the upstream binding wasn't done yet.
It looks as if the upstream stuff has landed, since in linux/master I see:
287e9357abcc DT/arm,gic-v3: Documment PPI partition support
e3825ba1af3a irqchip/gic-v3: Add support for partitioned PPIs
9e2c986cb460 irqchip: Add per-cpu interrupt partitioning library
222df54fd8b7 genirq: Allow the affinity of a percpu interrupt to be
set/retrieved 651e8b54abde irqdomain: Allow domain matching on irq_fwspec
This series patches add to support the rk3399 SoCs PMU.
I pick up the https://patchwork.kernel.org/patch/9209369/.
As do some tests with ChromeOs for my rk3399 board.
Tested with linus master 4.7-rc6 kernel on rk3399 board.
https://github.com/Caesar-github/rockchip/tree/rk3399/pmu-upstream
localhost / # perf list
List of pre-defined events (to be used in -e):
cpu-cycles OR cycles [Hardware event]
instructions [Hardware event]
cache-references [Hardware event]
cache-misses [Hardware event]
branch-instructions OR branches [Hardware event]
branch-misses [Hardware event]
bus-cycles [Hardware event]
...
perf stat --cpu 0/1/2/3..... to minitor
e.g. cpu0;
localhost / # perf stat --cpu 0
Performance counter stats for 'CPU(s) 0':
3374.917571 task-clock (msec) # 1.001 CPUs utilized [100.00%]
20 context-switches # 0.006 K/sec [100.00%]
2 cpu-migrations # 0.001 K/sec [100.00%]
55 page-faults # 0.016 K/sec
7151843 cycles # 0.002 GHz [100.00%]
<not supported> stalled-cycles-frontend
<not supported> stalled-cycles-backend
4272536 instructions # 0.60 insns per cycle [100.00%]
568406 branches # 0.168 M/sec [100.00%]
65652 branch-misses # 11.55% of all branches
Also, 'perf top' to monitor the PMU interrupts from cpus
-Caesar
Changes in v2:
- AS Mark comments on https://patchwork.kernel.org/patch/9209369/
remove the interrupt-affinity property, we need depend on Marc' perf
code on https://patchwork.kernel.org/patch/9209369/.
Caesar Wang (2):
arm64: dts: rockchip: change all interrupts cells for 4 on rk3399 SoCs
arm64: dts: rockchip: support the pmu node for rk3399
arch/arm64/boot/dts/rockchip/rk3399.dtsi | 118
++++++++++++++++++------------- 1 file changed, 69 insertions(+), 49
deletions(-)
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