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zfs: Use a statement expression to implement SET_ERROR()

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This way we can avoid making assumptions about the SDT probe
implementation.  No functional change intended.

This was submitted upstream as https://github.com/openzfs/zfs/pull/16284

MFC after:	1 week
This commit is contained in:
Mark Johnston 2024-06-19 12:01:54 -04:00
parent bc2901144c
commit e5a7890dc0
1 changed files with 6 additions and 5 deletions
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11
sys/contrib/openzfs/include/os/freebsd/spl/sys/sdt.h
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@ -31,13 +31,14 @@
#include_next <sys/sdt.h>
#ifdef KDTRACE_HOOKS
/* CSTYLED */
/* BEGIN CSTYLED */
SDT_PROBE_DECLARE(sdt, , , set__error);
#define SET_ERROR(err) \
((sdt_sdt___set__error->id ? \
(*sdt_probe_func)(sdt_sdt___set__error->id, \
(uintptr_t)err, 0, 0, 0, 0) : 0), err)
#define SET_ERROR(err) ({ \
SDT_PROBE1(sdt, , , set__error, (uintptr_t)err); \
err; \
})
/* END CSTYLED */
#else
#define SET_ERROR(err) (err)
#endif