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Provide SDT_PROBES_ENABLED macro.

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Sponsored by:	The FreeBSD Foundation
This commit is contained in:
Mateusz Guzik 2018-12-08 06:30:41 +00:00
parent 3c76ace36b
commit 13a45e4b14
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=341720
2 changed files with 4 additions and 2 deletions
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2
sys/kern/kern_synch.c
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@ -431,7 +431,7 @@ mi_switch(int flags, struct thread *newtd)
CTR4(KTR_PROC, "mi_switch: old thread %ld (td_sched %p, pid %ld, %s)",
td->td_tid, td_get_sched(td), td->td_proc->p_pid, td->td_name);
#ifdef KDTRACE_HOOKS
if (__predict_false(sdt_probes_enabled) &&
if (SDT_PROBES_ENABLED() &&
((flags & SW_PREEMPT) != 0 || ((flags & SW_INVOL) != 0 &&
(flags & SW_TYPE_MASK) == SWT_NEEDRESCHED)))
SDT_PROBE0(sched, , , preempt);

4
sys/sys/sdt.h
View File

@ -164,8 +164,10 @@ SET_DECLARE(sdt_argtypes_set, struct sdt_argtype);
#define SDT_PROBE_DECLARE(prov, mod, func, name) \
extern struct sdt_probe sdt_##prov##_##mod##_##func##_##name[1]
#define SDT_PROBES_ENABLED() __predict_false(sdt_probes_enabled)
#define SDT_PROBE(prov, mod, func, name, arg0, arg1, arg2, arg3, arg4) do { \
if (__predict_false(sdt_probes_enabled)) { \
if (SDT_PROBES_ENABLED()) { \
if (__predict_false(sdt_##prov##_##mod##_##func##_##name->id)) \
(*sdt_probe_func)(sdt_##prov##_##mod##_##func##_##name->id, \
(uintptr_t) arg0, (uintptr_t) arg1, (uintptr_t) arg2, \