Since there are many debugging information with a
function name,it's better to replace them with %s.
Notice that there are many similar code patterns, so I
defined two macros. One is kdb_func_printf, which is used
for debugging information that requires function names.
As below:
- kdb_printf("func_name: ...",args);
The other is kdb_ardbg_printf, which adds a conditional
statement to the former.This is used for:
- if (KDB_DEBUG(AR))
- kdb_printf("func_name: ...",args);
In addition, I changed the format code of size_t to %zu.
Signed-off-by: Stephen Zhang <stephenzhang...@gmail.com>
---
kernel/debug/kdb/kdb_support.c | 64 ++++++++++++++++++++++--------------------
1 file changed, 33 insertions(+), 31 deletions(-)
diff --git a/kernel/debug/kdb/kdb_support.c b/kernel/debug/kdb/kdb_support.c
index 6226502..d255003 100644
--- a/kernel/debug/kdb/kdb_support.c
+++ b/kernel/debug/kdb/kdb_support.c
@@ -27,6 +27,15 @@
#include <linux/slab.h>
#include "kdb_private.h"
+#define kdb_func_printf(format, args...) \
+ kdb_printf("%s: " format, __func__, ##args)
+
+#define kdb_ardbg_printf(format, args...) \
+ do { \
+ if (KDB_DEBUG(AR)) \
+ kdb_func_printf(format, ##args); \
+ } while (0)
+
/*
* kdbgetsymval - Return the address of the given symbol.
*
@@ -39,20 +48,16 @@
*/
int kdbgetsymval(const char *symname, kdb_symtab_t *symtab)
{
- if (KDB_DEBUG(AR))
- kdb_printf("kdbgetsymval: symname=%s, symtab=%px\n", symname,
- symtab);
+ kdb_ardbg_printf("symname=%s, symtab=%px\n", symname, symtab);
memset(symtab, 0, sizeof(*symtab));
symtab->sym_start = kallsyms_lookup_name(symname);
if (symtab->sym_start) {
- if (KDB_DEBUG(AR))
- kdb_printf("kdbgetsymval: returns 1, "
- "symtab->sym_start=0x%lx\n",
- symtab->sym_start);
+ kdb_ardbg_printf("returns 1, "
+ "symtab->sym_start=0x%lx\n",
+ symtab->sym_start);
return 1;
}
- if (KDB_DEBUG(AR))
- kdb_printf("kdbgetsymval: returns 0\n");
+ kdb_ardbg_printf("returns 0\n");
return 0;
}
EXPORT_SYMBOL(kdbgetsymval);
@@ -87,15 +92,14 @@ int kdbnearsym(unsigned long addr, kdb_symtab_t *symtab)
#define knt1_size 128 /* must be >= kallsyms table size */
char *knt1 = NULL;
- if (KDB_DEBUG(AR))
- kdb_printf("kdbnearsym: addr=0x%lx, symtab=%px\n", addr,
symtab);
+ kdb_ardbg_printf("addr=0x%lx, symtab=%px\n", addr, symtab);
memset(symtab, 0, sizeof(*symtab));
if (addr < 4096)
goto out;
knt1 = debug_kmalloc(knt1_size, GFP_ATOMIC);
if (!knt1) {
- kdb_printf("kdbnearsym: addr=0x%lx cannot kmalloc knt1\n",
+ kdb_func_printf("addr=0x%lx cannot kmalloc knt1\n",
addr);
goto out;
}
@@ -147,11 +151,10 @@ int kdbnearsym(unsigned long addr, kdb_symtab_t *symtab)
if (symtab->mod_name == NULL)
symtab->mod_name = "kernel";
- if (KDB_DEBUG(AR))
- kdb_printf("kdbnearsym: returns %d symtab->sym_start=0x%lx, "
- "symtab->mod_name=%px, symtab->sym_name=%px (%s)\n", ret,
- symtab->sym_start, symtab->mod_name, symtab->sym_name,
- symtab->sym_name);
+ kdb_ardbg_printf("returns %d symtab->sym_start=0x%lx, "
+ "symtab->mod_name=%px, symtab->sym_name=%px (%s)\n", ret,
+ symtab->sym_start, symtab->mod_name, symtab->sym_name,
+ symtab->sym_name);
out:
debug_kfree(knt1);
@@ -328,7 +331,7 @@ int kdb_getarea_size(void *res, unsigned long addr, size_t
size)
int ret = copy_from_kernel_nofault((char *)res, (char *)addr, size);
if (ret) {
if (!KDB_STATE(SUPPRESS)) {
- kdb_printf("kdb_getarea: Bad address 0x%lx\n", addr);
+ kdb_func_printf("Bad address 0x%lx\n", addr);
KDB_STATE_SET(SUPPRESS);
}
ret = KDB_BADADDR;
@@ -353,7 +356,7 @@ int kdb_putarea_size(unsigned long addr, void *res, size_t
size)
int ret = copy_from_kernel_nofault((char *)addr, (char *)res, size);
if (ret) {
if (!KDB_STATE(SUPPRESS)) {
- kdb_printf("kdb_putarea: Bad address 0x%lx\n", addr);
+ kdb_func_printf("Bad address 0x%lx\n", addr);
KDB_STATE_SET(SUPPRESS);
}
ret = KDB_BADADDR;
@@ -435,7 +438,7 @@ int kdb_getphysword(unsigned long *word, unsigned long
addr, size_t size)
fallthrough;
default:
diag = KDB_BADWIDTH;
- kdb_printf("kdb_getphysword: bad width %ld\n", (long) size);
+ kdb_func_printf("bad width %zu\n", size);
}
return diag;
}
@@ -484,7 +487,7 @@ int kdb_getword(unsigned long *word, unsigned long addr,
size_t size)
fallthrough;
default:
diag = KDB_BADWIDTH;
- kdb_printf("kdb_getword: bad width %ld\n", (long) size);
+ kdb_func_printf("bad width %zu\n", size);
}
return diag;
}
@@ -528,7 +531,7 @@ int kdb_putword(unsigned long addr, unsigned long word,
size_t size)
fallthrough;
default:
diag = KDB_BADWIDTH;
- kdb_printf("kdb_putword: bad width %ld\n", (long) size);
+ kdb_func_printf("bad width %zu\n", size);
}
return diag;
}
@@ -602,8 +605,7 @@ unsigned long kdb_task_state_string(const char *s)
res = ~0UL;
break;
default:
- kdb_printf("%s: unknown flag '%c' ignored\n",
- __func__, *s);
+ kdb_func_printf("unknown flag '%c' ignored\n", *s);
break;
}
++s;
@@ -884,18 +886,18 @@ void debug_kusage(void)
if (!debug_kusage_one_time)
goto out;
debug_kusage_one_time = 0;
- kdb_printf("%s: debug_kmalloc memory leak dah_first %d\n",
- __func__, dah_first);
+ kdb_func_printf("debug_kmalloc memory leak dah_first %d\n",
+ dah_first);
if (dah_first) {
h_used = (struct debug_alloc_header *)debug_alloc_pool;
- kdb_printf("%s: h_used %px size %d\n", __func__, h_used,
+ kdb_func_printf("h_used %px size %d\n", h_used,
h_used->size);
}
do {
h_used = (struct debug_alloc_header *)
((char *)h_free + dah_overhead + h_free->size);
- kdb_printf("%s: h_used %px size %d caller %px\n",
- __func__, h_used, h_used->size, h_used->caller);
+ kdb_func_printf("h_used %px size %d caller %px\n",
+ h_used, h_used->size, h_used->caller);
h_free = (struct debug_alloc_header *)
(debug_alloc_pool + h_free->next);
} while (h_free->next);
@@ -903,8 +905,8 @@ void debug_kusage(void)
((char *)h_free + dah_overhead + h_free->size);
if ((char *)h_used - debug_alloc_pool !=
sizeof(debug_alloc_pool_aligned))
- kdb_printf("%s: h_used %px size %d caller %px\n",
- __func__, h_used, h_used->size, h_used->caller);
+ kdb_func_printf("h_used %px size %d caller %px\n",
+ h_used, h_used->size, h_used->caller);
out:
spin_unlock(&dap_lock);
}
--
1.8.3.1
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