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# simple variable
global a
# You can put initialization in here
probe begin {
a = 1
}
# This gets probed millions of times. TEST gets replaces
# by the real probe point.
probe TEST {
if (a == 0)
printf("a is ZERO\n")
}
# something rarely called. Just to force the optimizer
# to not optimize access to "a"
probe kernel.function("sys_delete_module")
{
a = 2
}
probe end {
printf("a=%d\n", a)
}
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