Kaige Fu d737d6e63f tools: acrnlog: give user hint when acrn hvlog devices not found ...

If module acrn_hvlog is configured as "m" and we don't insert it before
launching acrnlog tool, acrnlog will run normally instead of throw
out an error in current implementation. And no log files are generated.
It will cause confusing here.

So, this patch throw out an error massage to user about the absence of acrn
hvlog devices.

BTW, this patch replaces cpuid/num related concept to devid/cnt which is more
suitable for /dev/acrn_hvlog_xxx.

Tracked-On: #1975
Signed-off-by: Kaige Fu <kaige.fu@intel.com>
Acked-by: Yan, Like <like.yan@intel.com>

2018-12-05 13:16:20 +08:00

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