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From: Jason Wessel on 5 Aug 2010 10:50
From: Dongdong Deng <dongdong.deng(a)windriver.com>

Use the macros provided by the HW breakpoint API.

Signed-off-by: Dongdong Deng <dongdong.deng(a)windriver.com>
Signed-off-by: Jason Wessel <jason.wessel(a)windriver.com>
---
arch/x86/kernel/kgdb.c | 18 +++++++++---------
1 files changed, 9 insertions(+), 9 deletions(-)

diff --git a/arch/x86/kernel/kgdb.c b/arch/x86/kernel/kgdb.c
index a8b8097..ef10940 100644
--- a/arch/x86/kernel/kgdb.c
+++ b/arch/x86/kernel/kgdb.c
@@ -195,7 +195,7 @@ static struct hw_breakpoint {
int len;
int type;
struct perf_event **pev;
-} breakinfo[4];
+} breakinfo[HBP_NUM];

static unsigned long early_dr7;

@@ -203,7 +203,7 @@ static void kgdb_correct_hw_break(void)
{
int breakno;

- for (breakno = 0; breakno < 4; breakno++) {
+ for (breakno = 0; breakno < HBP_NUM; breakno++) {
struct perf_event *bp;
struct arch_hw_breakpoint *info;
int val;
@@ -290,10 +290,10 @@ kgdb_remove_hw_break(unsigned long addr, int len, enum kgdb_bptype bptype)
{
int i;

- for (i = 0; i < 4; i++)
+ for (i = 0; i < HBP_NUM; i++)
if (breakinfo[i].addr == addr && breakinfo[i].enabled)
break;
- if (i == 4)
+ if (i == HBP_NUM)
return -1;

if (hw_break_release_slot(i)) {
@@ -311,7 +311,7 @@ static void kgdb_remove_all_hw_break(void)
int cpu = raw_smp_processor_id();
struct perf_event *bp;

- for (i = 0; i < 4; i++) {
+ for (i = 0; i < HBP_NUM; i++) {
if (!breakinfo[i].enabled)
continue;
bp = *per_cpu_ptr(breakinfo[i].pev, cpu);
@@ -331,10 +331,10 @@ kgdb_set_hw_break(unsigned long addr, int len, enum kgdb_bptype bptype)
{
int i;

- for (i = 0; i < 4; i++)
+ for (i = 0; i < HBP_NUM; i++)
if (!breakinfo[i].enabled)
break;
- if (i == 4)
+ if (i == HBP_NUM)
return -1;

switch (bptype) {
@@ -395,7 +395,7 @@ void kgdb_disable_hw_debug(struct pt_regs *regs)

/* Disable hardware debugging while we are in kgdb: */
set_debugreg(0UL, 7);
- for (i = 0; i < 4; i++) {
+ for (i = 0; i < HBP_NUM; i++) {
if (!breakinfo[i].enabled)
continue;
if (dbg_is_early) {
@@ -640,7 +640,7 @@ void kgdb_arch_late(void)
attr.bp_len = HW_BREAKPOINT_LEN_1;
attr.bp_type = HW_BREAKPOINT_W;
attr.disabled = 1;
- for (i = 0; i < 4; i++) {
+ for (i = 0; i < HBP_NUM; i++) {
if (breakinfo[i].pev)
continue;
breakinfo[i].pev = register_wide_hw_breakpoint(&attr, NULL);
--
1.6.3.3

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Prev: [PATCH 14/17] mm,kdb,kgdb: Add a debug reference for the kdb kmap usage
Next: [PATCH 02/17] gdbstub: Optimize kgdb's "thread:" response for the gdb serial protocol