PM / wakeup: Use pm_pr_dbg() instead of pr_debug()
diff mbox series

Message ID 20190325172456.227190-1-swboyd@chromium.org
State Awaiting Upstream
Delegated to: Rafael Wysocki
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Series
  • PM / wakeup: Use pm_pr_dbg() instead of pr_debug()
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Commit Message

Stephen Boyd March 25, 2019, 5:24 p.m. UTC
These prints are useful if we're doing PM suspend debugging. Having them
at pr_debug() level means that we need to either enable DEBUG in this
file, or compile the kernel with dynamic debug capabilities. Both of
these options have drawbacks like custom compilation or opting into all
debug statements being included into the kernel image. Given that we
already have infrastructure to collect PM debugging information with
CONFIG_PM_DEBUG and friends, let's change the pr_debug usage here to be
pm_pr_dbg() instead so we can collect the wakeup information in the
kernel logs.

Cc: Wenkai Du <wenkai.du@intel.com>
Cc: Justin TerAvest <teravest@chromium.org>
Signed-off-by: Stephen Boyd <swboyd@chromium.org>
---
 drivers/base/power/wakeup.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

Comments

Rafael J. Wysocki April 2, 2019, 8:41 a.m. UTC | #1
On Monday, March 25, 2019 6:24:56 PM CEST Stephen Boyd wrote:
> These prints are useful if we're doing PM suspend debugging. Having them
> at pr_debug() level means that we need to either enable DEBUG in this
> file, or compile the kernel with dynamic debug capabilities. Both of
> these options have drawbacks like custom compilation or opting into all
> debug statements being included into the kernel image. Given that we
> already have infrastructure to collect PM debugging information with
> CONFIG_PM_DEBUG and friends, let's change the pr_debug usage here to be
> pm_pr_dbg() instead so we can collect the wakeup information in the
> kernel logs.
> 
> Cc: Wenkai Du <wenkai.du@intel.com>
> Cc: Justin TerAvest <teravest@chromium.org>
> Signed-off-by: Stephen Boyd <swboyd@chromium.org>
> ---
>  drivers/base/power/wakeup.c | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/base/power/wakeup.c b/drivers/base/power/wakeup.c
> index bb1ae175fae1..23c243a4c675 100644
> --- a/drivers/base/power/wakeup.c
> +++ b/drivers/base/power/wakeup.c
> @@ -804,7 +804,7 @@ void pm_print_active_wakeup_sources(void)
>  	srcuidx = srcu_read_lock(&wakeup_srcu);
>  	list_for_each_entry_rcu(ws, &wakeup_sources, entry) {
>  		if (ws->active) {
> -			pr_debug("active wakeup source: %s\n", ws->name);
> +			pm_pr_dbg("active wakeup source: %s\n", ws->name);
>  			active = 1;
>  		} else if (!active &&
>  			   (!last_activity_ws ||
> @@ -815,7 +815,7 @@ void pm_print_active_wakeup_sources(void)
>  	}
>  
>  	if (!active && last_activity_ws)
> -		pr_debug("last active wakeup source: %s\n",
> +		pm_pr_dbg("last active wakeup source: %s\n",
>  			last_activity_ws->name);
>  	srcu_read_unlock(&wakeup_srcu, srcuidx);
>  }
> @@ -845,7 +845,7 @@ bool pm_wakeup_pending(void)
>  	raw_spin_unlock_irqrestore(&events_lock, flags);
>  
>  	if (ret) {
> -		pr_debug("Wakeup pending, aborting suspend\n");
> +		pm_pr_dbg("Wakeup pending, aborting suspend\n");
>  		pm_print_active_wakeup_sources();
>  	}
>  
> 

Applied, thanks!

Patch
diff mbox series

diff --git a/drivers/base/power/wakeup.c b/drivers/base/power/wakeup.c
index bb1ae175fae1..23c243a4c675 100644
--- a/drivers/base/power/wakeup.c
+++ b/drivers/base/power/wakeup.c
@@ -804,7 +804,7 @@  void pm_print_active_wakeup_sources(void)
 	srcuidx = srcu_read_lock(&wakeup_srcu);
 	list_for_each_entry_rcu(ws, &wakeup_sources, entry) {
 		if (ws->active) {
-			pr_debug("active wakeup source: %s\n", ws->name);
+			pm_pr_dbg("active wakeup source: %s\n", ws->name);
 			active = 1;
 		} else if (!active &&
 			   (!last_activity_ws ||
@@ -815,7 +815,7 @@  void pm_print_active_wakeup_sources(void)
 	}
 
 	if (!active && last_activity_ws)
-		pr_debug("last active wakeup source: %s\n",
+		pm_pr_dbg("last active wakeup source: %s\n",
 			last_activity_ws->name);
 	srcu_read_unlock(&wakeup_srcu, srcuidx);
 }
@@ -845,7 +845,7 @@  bool pm_wakeup_pending(void)
 	raw_spin_unlock_irqrestore(&events_lock, flags);
 
 	if (ret) {
-		pr_debug("Wakeup pending, aborting suspend\n");
+		pm_pr_dbg("Wakeup pending, aborting suspend\n");
 		pm_print_active_wakeup_sources();
 	}