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Message-Id: <1420663910-6406-1-git-send-email-john.stultz@linaro.org>
Date: Wed, 7 Jan 2015 12:51:49 -0800
From: John Stultz <john.stultz@...aro.org>
To: lkml <linux-kernel@...r.kernel.org>
Cc: John Stultz <john.stultz@...aro.org>,
Corey Minyard <minyard@....org>,
openipmi-developer@...ts.sourceforge.net,
Arnd Bergmann <arnd@...db.de>
Subject: [PATCH 1/2][RFC] ipmi: Cleanup DEBUG_TIMING ifdef usage
The driver uses #ifdef DEBUG_TIMING in order to conditionally print out
timestamped debug messages. Unfortunately it adds the ifdefs all over the
usage sites.
This patch cleans it up by adding a debug_timestamp() function which
is compiled out if DEBUG_TIMING isn't present. This cleans up all
the ugly ifdefs in the function logic.
Cc: Corey Minyard <minyard@....org>
Cc: openipmi-developer@...ts.sourceforge.net
Cc: Arnd Bergmann <arnd@...db.de>
Signed-off-by: John Stultz <john.stultz@...aro.org>
---
drivers/char/ipmi/ipmi_si_intf.c | 58 +++++++++++++++-------------------------
1 file changed, 21 insertions(+), 37 deletions(-)
diff --git a/drivers/char/ipmi/ipmi_si_intf.c b/drivers/char/ipmi/ipmi_si_intf.c
index 967b73a..cc3a07d 100644
--- a/drivers/char/ipmi/ipmi_si_intf.c
+++ b/drivers/char/ipmi/ipmi_si_intf.c
@@ -321,6 +321,18 @@ static int try_smi_init(struct smi_info *smi);
static void cleanup_one_si(struct smi_info *to_clean);
static void cleanup_ipmi_si(void);
+#ifdef DEBUG_TIMING
+void debug_timestamp(char *msg)
+{
+ struct timeval t;
+
+ do_gettimeofday(&t);
+ pr_debug("**%s: %d.%9.9d\n", msg, t.tv_sec, t.tv_usec);
+}
+#else
+#define debug_timestamp(x)
+#endif
+
static ATOMIC_NOTIFIER_HEAD(xaction_notifier_list);
static int register_xaction_notifier(struct notifier_block *nb)
{
@@ -370,10 +382,7 @@ static enum si_sm_result start_next_msg(struct smi_info *smi_info)
smi_info->curr_msg = smi_info->waiting_msg;
smi_info->waiting_msg = NULL;
-#ifdef DEBUG_TIMING
- do_gettimeofday(&t);
- printk(KERN_DEBUG "**Start2: %d.%9.9d\n", t.tv_sec, t.tv_usec);
-#endif
+ debug_timestamp("Start2");
err = atomic_notifier_call_chain(&xaction_notifier_list,
0, smi_info);
if (err & NOTIFY_STOP_MASK) {
@@ -582,12 +591,8 @@ static void check_bt_irq(struct smi_info *smi_info, bool irq_on)
static void handle_transaction_done(struct smi_info *smi_info)
{
struct ipmi_smi_msg *msg;
-#ifdef DEBUG_TIMING
- struct timeval t;
- do_gettimeofday(&t);
- printk(KERN_DEBUG "**Done: %d.%9.9d\n", t.tv_sec, t.tv_usec);
-#endif
+ debug_timestamp("Done");
switch (smi_info->si_state) {
case SI_NORMAL:
if (!smi_info->curr_msg)
@@ -929,17 +934,11 @@ static void sender(void *send_info,
struct smi_info *smi_info = send_info;
enum si_sm_result result;
unsigned long flags;
-#ifdef DEBUG_TIMING
- struct timeval t;
-#endif
BUG_ON(smi_info->waiting_msg);
smi_info->waiting_msg = msg;
-#ifdef DEBUG_TIMING
- do_gettimeofday(&t);
- printk("**Enqueue: %d.%9.9d\n", t.tv_sec, t.tv_usec);
-#endif
+ debug_timestamp("Enqueue");
if (smi_info->run_to_completion) {
/*
@@ -1128,15 +1127,10 @@ static void smi_timeout(unsigned long data)
unsigned long jiffies_now;
long time_diff;
long timeout;
-#ifdef DEBUG_TIMING
- struct timeval t;
-#endif
spin_lock_irqsave(&(smi_info->si_lock), flags);
-#ifdef DEBUG_TIMING
- do_gettimeofday(&t);
- printk(KERN_DEBUG "**Timer: %d.%9.9d\n", t.tv_sec, t.tv_usec);
-#endif
+ debug_timestamp("Timer");
+
jiffies_now = jiffies;
time_diff = (((long)jiffies_now - (long)smi_info->last_timeout_jiffies)
* SI_USEC_PER_JIFFY);
@@ -1173,18 +1167,13 @@ static irqreturn_t si_irq_handler(int irq, void *data)
{
struct smi_info *smi_info = data;
unsigned long flags;
-#ifdef DEBUG_TIMING
- struct timeval t;
-#endif
spin_lock_irqsave(&(smi_info->si_lock), flags);
smi_inc_stat(smi_info, interrupts);
-#ifdef DEBUG_TIMING
- do_gettimeofday(&t);
- printk(KERN_DEBUG "**Interrupt: %d.%9.9d\n", t.tv_sec, t.tv_usec);
-#endif
+ debug_timestamp("Interrupt");
+
smi_event_handler(smi_info, 0);
spin_unlock_irqrestore(&(smi_info->si_lock), flags);
return IRQ_HANDLED;
@@ -2038,18 +2027,13 @@ static u32 ipmi_acpi_gpe(acpi_handle gpe_device,
{
struct smi_info *smi_info = context;
unsigned long flags;
-#ifdef DEBUG_TIMING
- struct timeval t;
-#endif
spin_lock_irqsave(&(smi_info->si_lock), flags);
smi_inc_stat(smi_info, interrupts);
-#ifdef DEBUG_TIMING
- do_gettimeofday(&t);
- printk("**ACPI_GPE: %d.%9.9d\n", t.tv_sec, t.tv_usec);
-#endif
+ debug_timestamp("ACPI_GPE");
+
smi_event_handler(smi_info, 0);
spin_unlock_irqrestore(&(smi_info->si_lock), flags);
--
1.9.1
--
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