• Kent Overstreet's avatar
    bcache: Fix/revamp tracepoints · c37511b8
    Kent Overstreet authored
    The tracepoints were reworked to be more sensible, and fixed a null
    pointer deref in one of the tracepoints.
    
    Converted some of the pr_debug()s to tracepoints - this is partly a
    performance optimization; it used to be that with DEBUG or
    CONFIG_DYNAMIC_DEBUG pr_debug() was an empty macro; but at some point it
    was changed to an empty inline function.
    
    Some of the pr_debug() statements had rather expensive function calls as
    part of the arguments, so this code was getting run unnecessarily even
    on non debug kernels - in some fast paths, too.
    Signed-off-by: default avatarKent Overstreet <koverstreet@google.com>
    c37511b8
trace.c 1.72 KB