Module Name: src
Committed By: matt
Date: Tue Feb 19 00:56:25 UTC 2013
Modified Files:
src/sys/sys: kernhist.h
Log Message:
Add KERNHIST_CALLARGS and make the delay tunable (KERNHIST_DELAY)
To generate a diff of this commit:
cvs rdiff -u -r1.5 -r1.6 src/sys/sys/kernhist.h
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/sys/kernhist.h
diff -u src/sys/sys/kernhist.h:1.5 src/sys/sys/kernhist.h:1.6
--- src/sys/sys/kernhist.h:1.5 Mon Jul 30 23:56:48 2012
+++ src/sys/sys/kernhist.h Tue Feb 19 00:56:25 2013
@@ -1,4 +1,4 @@
-/* $NetBSD: kernhist.h,v 1.5 2012/07/30 23:56:48 matt Exp $ */
+/* $NetBSD: kernhist.h,v 1.6 2013/02/19 00:56:25 matt Exp $ */
/*
* Copyright (c) 1997 Charles D. Cranor and Washington University.
@@ -97,6 +97,7 @@ LIST_HEAD(kern_history_head, kern_histor
#define KERNHIST_INIT(NAME,N)
#define KERNHIST_INIT_STATIC(NAME,BUF)
#define KERNHIST_LOG(NAME,FMT,A,B,C,D)
+#define KERNHIST_CALLARGS(NAME,FMT,A,B,C,D)
#define KERNHIST_CALLED(NAME)
#define KERNHIST_FUNC(FNAME)
#define kernhist_dump(NAME)
@@ -132,13 +133,18 @@ do { \
LIST_INSERT_HEAD(&kern_histories, &(NAME), list); \
} while (/*CONSTCOND*/ 0)
+#ifndef KERNHIST_DELAY
+#define KERNHIST_DELAY 100000
+#endif
+
#if defined(KERNHIST_PRINT)
extern int kernhist_print_enabled;
#define KERNHIST_PRINTNOW(E) \
do { \
if (kernhist_print_enabled) { \
kernhist_entry_print(E); \
- DELAY(100000); \
+ if (KERNHISTDELAY != 0) \
+ DELAY(KERNHIST_DELAY); \
} \
} while (/*CONSTCOND*/ 0)
#else
@@ -174,10 +180,20 @@ do { \
KERNHIST_LOG(NAME, "called!", 0, 0, 0, 0); \
} while (/*CONSTCOND*/ 0)
+/*
+ * This extends kernhist to avoid wasting a separate "called!" entry on every
+ * function.
+ */
+#define KERNHIST_CALLARGS(NAME, FMT, A, B, C, D) \
+do { \
+ _kernhist_call = atomic_inc_uint_nv(&_kernhist_cnt); \
+ KERNHIST_LOG(NAME, "called: "FMT, (A), (B), (C), (D)); \
+} while (/*CONSTCOND*/ 0)
+
#define KERNHIST_FUNC(FNAME) \
static unsigned int _kernhist_cnt = 0; \
static const char *const _kernhist_name = FNAME; \
- int _kernhist_call = 0;
+ unsigned int _kernhist_call = 0;
static inline void kernhist_entry_print(const struct kern_history_ent *);
