[v1,5/5] platform/x86: intel_telemetry: Improve S0ix logs

Commit Message

Chakravarty, Souvik K Nov. 16, 2017, 10:18 a.m. UTC

Suspend with shallow wakes is not a useful parameter since the phenomena
does not exist on deployed devices and is only a parameter of use during
device power-on phase. The field always reads zero. Additionally there
are other easier methods to detect it, e.g., if the S0ix counter
increments by more than one during suspend. Hence the field is superfluous
and can be removed.

This patch also slightly renames the S0ix total field for better
viewability.

Signed-off-by: Souvik Kumar Chakravarty <[e-mail]>
---
 drivers/platform/x86/intel_telemetry_debugfs.c | 47 +++++---------------------
 1 file changed, 8 insertions(+), 39 deletions(-)

Comments

Andy Shevchenko Nov. 17, 2017, 1:36 p.m. UTC | #1

On Thu, Nov 16, 2017 at 12:18 PM, Souvik Kumar Chakravarty
<[e-mail]> wrote:
> Suspend with shallow wakes is not a useful parameter since the phenomena
> does not exist on deployed devices and is only a parameter of use during
> device power-on phase. The field always reads zero. Additionally there
> are other easier methods to detect it, e.g., if the S0ix counter
> increments by more than one during suspend. Hence the field is superfluous
> and can be removed.
>
> This patch also slightly renames the S0ix total field for better
> viewability.

> -                               (u64)(s0ix_total_res*10/192));
> +                  (u64)(s0ix_total_res*10/192));

Why indentation is changed? Candidate for the patch wrt indentation thingy.

> -       if (suspend_shlw_ctr_exit == 1) {
> +       if (suspend_shlw_ctr_exit > 0) {

How could it be less than 0?

!= 0 ?

> -       if (suspend_deep_ctr_exit == 1) {
> +       if (suspend_deep_ctr_exit > 0) {

Ditto.

Patch

diff --git a/drivers/platform/x86/intel_telemetry_debugfs.c b/drivers/platform/x86/intel_telemetry_debugfs.c
index 2a960f6..b40bacc0 100644
--- a/drivers/platform/x86/intel_telemetry_debugfs.c
+++ b/drivers/platform/x86/intel_telemetry_debugfs.c
@@ -98,10 +98,6 @@  static u32 suspend_shlw_ctr_temp, suspend_deep_ctr_temp;
 static u64 suspend_shlw_res_temp, suspend_deep_res_temp;
 
 struct telemetry_susp_stats {
-	u32 shlw_swake_ctr;
-	u32 deep_swake_ctr;
-	u64 shlw_swake_res;
-	u64 deep_swake_res;
 	u32 shlw_ctr;
 	u32 deep_ctr;
 	u64 shlw_res;
@@ -594,19 +590,15 @@  static int telem_soc_states_show(struct seq_file *s, void *unused)
 
 	seq_printf(s, "S0IX Shallow\t\t\t %10u\t %10llu\n",
 		   s0ix_shlw_ctr -
-		   conf->suspend_stats.shlw_ctr -
-		   conf->suspend_stats.shlw_swake_ctr,
+		   conf->suspend_stats.shlw_ctr,
 		   (u64)((s0ix_shlw_res -
-		   conf->suspend_stats.shlw_res -
-		   conf->suspend_stats.shlw_swake_res)*10/192));
+		   conf->suspend_stats.shlw_res)*10/192));
 
 	seq_printf(s, "S0IX Deep\t\t\t %10u\t %10llu\n",
 		   s0ix_deep_ctr -
-		   conf->suspend_stats.deep_ctr -
-		   conf->suspend_stats.deep_swake_ctr,
+		   conf->suspend_stats.deep_ctr,
 		   (u64)((s0ix_deep_res -
-		   conf->suspend_stats.deep_res -
-		   conf->suspend_stats.deep_swake_res)*10/192));
+		   conf->suspend_stats.deep_res)*10/192));
 
 	seq_printf(s, "Suspend(With S0ixShallow)\t %10u\t %10llu\n",
 		   conf->suspend_stats.shlw_ctr,
@@ -616,14 +608,8 @@  static int telem_soc_states_show(struct seq_file *s, void *unused)
 		   conf->suspend_stats.deep_ctr,
 		   (u64)(conf->suspend_stats.deep_res*10)/192);
 
-	seq_printf(s, "Suspend(With Shallow-Wakes)\t %10u\t %10llu\n",
-		   conf->suspend_stats.shlw_swake_ctr +
-		   conf->suspend_stats.deep_swake_ctr,
-		   (u64)((conf->suspend_stats.shlw_swake_res +
-		   conf->suspend_stats.deep_swake_res)*10/192));
-
-	seq_printf(s, "S0IX+Suspend Total\t\t %10u\t %10llu\n", s0ix_total_ctr,
-				(u64)(s0ix_total_res*10/192));
+	seq_printf(s, "TOTAL S0IX\t\t\t %10u\t %10llu\n", s0ix_total_ctr,
+		   (u64)(s0ix_total_res*10/192));
 	seq_puts(s, "\n-------------------------------------------------\n");
 	seq_puts(s, "\t\tDEVICE STATES\n");
 	seq_puts(s, "-------------------------------------------------\n");
@@ -927,23 +913,15 @@  static int pm_suspend_exit_cb(void)
 	suspend_shlw_res_exit -= suspend_shlw_res_temp;
 	suspend_deep_res_exit -= suspend_deep_res_temp;
 
-	if (suspend_shlw_ctr_exit == 1) {
+	if (suspend_shlw_ctr_exit > 0) {
 		conf->suspend_stats.shlw_ctr +=
 		suspend_shlw_ctr_exit;
 
 		conf->suspend_stats.shlw_res +=
 		suspend_shlw_res_exit;
 	}
-	/* Shallow Wakes Case */
-	else if (suspend_shlw_ctr_exit > 1) {
-		conf->suspend_stats.shlw_swake_ctr +=
-		suspend_shlw_ctr_exit;
-
-		conf->suspend_stats.shlw_swake_res +=
-		suspend_shlw_res_exit;
-	}
 
-	if (suspend_deep_ctr_exit == 1) {
+	if (suspend_deep_ctr_exit > 0) {
 		conf->suspend_stats.deep_ctr +=
 		suspend_deep_ctr_exit;
 
@@ -951,15 +929,6 @@  static int pm_suspend_exit_cb(void)
 		suspend_deep_res_exit;
 	}
 
-	/* Shallow Wakes Case */
-	else if (suspend_deep_ctr_exit > 1) {
-		conf->suspend_stats.deep_swake_ctr +=
-		suspend_deep_ctr_exit;
-
-		conf->suspend_stats.deep_swake_res +=
-		suspend_deep_res_exit;
-	}
-
 out:
 	suspend_prep_ok = 0;
 	return NOTIFY_OK;