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authorRenato Botelho <renato@netgate.com>2016-08-01 12:53:16 -0300
committerRenato Botelho <renato@netgate.com>2016-08-01 12:53:16 -0300
commit80c20d0bef69a2c543d1bc2dddd2bc34198fec9b (patch)
treefc6009a2d49da5ab043d4c847a288f71ec6aa731 /sys/kern/subr_prf.c
parentf235fecdc77c17505022bc5202d74f3d36b33359 (diff)
parenteed7d9e93aec04a3f6a7d157c4cac7452a6c1727 (diff)
downloadFreeBSD-src-80c20d0bef69a2c543d1bc2dddd2bc34198fec9b.zip
FreeBSD-src-80c20d0bef69a2c543d1bc2dddd2bc34198fec9b.tar.gz
Merge remote-tracking branch 'origin/stable/11' into devel-11
Diffstat (limited to 'sys/kern/subr_prf.c')
-rw-r--r--sys/kern/subr_prf.c21
1 files changed, 21 insertions, 0 deletions
diff --git a/sys/kern/subr_prf.c b/sys/kern/subr_prf.c
index 5bcf39b..3784ffd 100644
--- a/sys/kern/subr_prf.c
+++ b/sys/kern/subr_prf.c
@@ -1196,3 +1196,24 @@ sbuf_hexdump(struct sbuf *sb, const void *ptr, int length, const char *hdr,
}
}
+#ifdef _KERNEL
+void
+counted_warning(unsigned *counter, const char *msg)
+{
+ struct thread *td;
+ unsigned c;
+
+ for (;;) {
+ c = *counter;
+ if (c == 0)
+ break;
+ if (atomic_cmpset_int(counter, c, c - 1)) {
+ td = curthread;
+ log(LOG_INFO, "pid %d (%s) %s%s\n",
+ td->td_proc->p_pid, td->td_name, msg,
+ c > 1 ? "" : " - not logging anymore");
+ break;
+ }
+ }
+}
+#endif
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