flame-kernel.stp

/*

Based on Brendan Gregg's work: http://www.brendangregg.com/FlameGraphs/cpuflamegraphs.html

*/
global s%

# Two ways of getting the timer - either perf.hw.instructions
# (every 100m instructions), or timer.profile - every jiffie tick.

// probe perf.hw.instructions {
probe timer.profile {
        s[backtrace()] <<< 1;
}

probe end {
        foreach (i in s+) {
                print_stack(i);
                printf("\t%d\n", @count(s[i]));
        }
}

%( $# > 1 %?
probe timer.sec($2) {
   %:
probe timer.sec(30) {
   %)
        exit();
}