On 3/19/15 8:11 AM, Steven Rostedt wrote:
On Mon, 16 Mar 2015 14:49:39 -0700
Alexei Starovoitov <ast@xxxxxxxxxxxx> wrote:
bpf_ktime_get_ns() is used by programs to compue time delta between events
"compute"
ok :)
+ [BPF_FUNC_ktime_get_ns] = {
+ .func = bpf_ktime_get_ns,
+ .gpl_only = true,
+ .ret_type = RET_INTEGER,
Hmm, a nanosecond value returned as integer? Is there a way to make
this a 64 bit return type, or is RET_INTEGER default to 64 bits in BPF
functions?
RET_INTEGER doesn't mean C 'int' width. It means non-pointer and
non-void value. The return value is always promoted to full
register width which is 64-bit.
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