trace_spl.h

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    1 /* Here to keep the libspl build happy */
    2 
    3 #ifndef _LIBSPL_SPL_TRACE_H
    4 #define _LIBSPL_SPL_TRACE_H
    5 
    6 /*
    7  * The set-error SDT probe is extra static, in that we declare its fake
    8  * function literally, rather than with the DTRACE_PROBE1() macro.  This is
    9  * necessary so that SET_ERROR() can evaluate to a value, which wouldn't
   10  * be possible if it required multiple statements (to declare the function
   11  * and then call it).
   12  *
   13  * SET_ERROR() uses the comma operator so that it can be used without much
   14  * additional code.  For example, "return (EINVAL);" becomes
   15  * "return (SET_ERROR(EINVAL));".  Note that the argument will be evaluated
   16  * twice, so it should not have side effects (e.g. something like:
   17  * "return (SET_ERROR(log_error(EINVAL, info)));" would log the error twice).
   18  */
   19 #undef SET_ERROR
   20 #define SET_ERROR(err) \
   21         (__set_error(__FILE__, __func__, __LINE__, err), err)
   22 
   23 
   24 #endif

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FreeBSD/Linux Kernel Cross Reference sys/contrib/openzfs/lib/libspl/include/sys/trace_spl.h

FreeBSD/Linux Kernel Cross Reference
sys/contrib/openzfs/lib/libspl/include/sys/trace_spl.h