On 1/13/17 18:49, Borislav Petkov wrote:
On Fri, Jan 13, 2017 at 05:24:01PM +0700, Suravee Suthikulpanit wrote:
IIUC, Perf tools looks at the /sys/devices/xxxxx to identify
availalble PMUs. Are you planning to have perf tools look at
/sys/devices/system/iommu/xxx instead?
No, I'm planning to understand what do you mean exactly. Because the
PMUs are, as I'm being pointed to, here:
#define EVENT_SOURCE_DEVICE_PATH "/bus/event_source/devices/"
Do you mean that, per chance?
Ah, okay. I can see the following directory path:
# ls -l /sys/devices/
drwxr-xr-x 5 root root 0 Jan 13 20:36 amd_iommu_0
# ls -l /sys/bus/event_source/devices/
lrwxrwxrwx 1 root root 0 Jan 13 20:33 amd_iommu_0 ->
../../../devices/amd_iommu_0
I'll update the commit log to mention /bus/event_source/devices/amd_iommu_X
instead.
Thanks,
S
