K 10
svn:author
V 8
freqlabs
K 8
svn:date
V 27
2020-07-28T02:56:26.332241Z
K 7
svn:log
V 447
libpmc: Use known pmc_cpuid buffer size

Use the existing PMC_CPUID_LEN to size pmc_cpuid in the kernel and various
buffers for reading it in libpmc.  This avoids some extra syscalls and
malloc/frees.

While in here, use strlcpy to copy a user-provided cpuid string instead of
memcpy, to make sure we terminate the buffer.

Reviewed by:	mav
MFC after:	1 week
Sponsored by:	iXsystems, Inc.
Differential Revision:	https://reviews.freebsd.org/D25679

END