The PMD Power Management scheme currently has 3 modes,
scale, monitor and pause. However, it would be nice to
have a baseline mode for easy comparison of power savings
with and without these modes.

This patch adds a 'baseline' mode were the pmd power
management is not enabled. Use --pmg-mgmt=baseline.

Signed-off-by: David Hunt <redacted>

---
changes in v2
* added a bool for baseline mode rather than abusing enums
---
  examples/l3fwd-power/main.c | 14 ++++++++++++--
  1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/examples/l3fwd-power/main.c b/examples/l3fwd-power/main.c
index f8dfed1634..aeb2411e62 100644
--- a/examples/l3fwd-power/main.c
+++ b/examples/l3fwd-power/main.c

@@ -207,6 +207,7 @@ enum appmode {
  enum appmode app_mode;
  
  static enum rte_power_pmd_mgmt_type pmgmt_type;
+bool baseline_enabled;
  
  enum freq_scale_hint_t
  {

@@ -1617,7 +1618,7 @@ print_usage(const char *prgname)
  		" empty polls, full polls, and core busyness to telemetry\n"
  		" --interrupt-only: enable interrupt-only mode\n"
  		" --pmd-mgmt MODE: enable PMD power management mode. "
-		"Currently supported modes: monitor, pause, scale\n",
+		"Currently supported modes: baseline, monitor, pause, scale\n",
  		prgname);
  }
  

@@ -1714,6 +1715,7 @@ parse_pmd_mgmt_config(const char *name)
  #define PMD_MGMT_MONITOR "monitor"
  #define PMD_MGMT_PAUSE   "pause"
  #define PMD_MGMT_SCALE   "scale"
+#define PMD_MGMT_BASELINE  "baseline"
  
  	if (strncmp(PMD_MGMT_MONITOR, name, sizeof(PMD_MGMT_MONITOR)) == 0) {
  		pmgmt_type = RTE_POWER_MGMT_TYPE_MONITOR;

@@ -1729,6 +1731,10 @@ parse_pmd_mgmt_config(const char *name)
  		pmgmt_type = RTE_POWER_MGMT_TYPE_SCALE;
  		return 0;
  	}
+	if (strncmp(PMD_MGMT_BASELINE, name, sizeof(PMD_MGMT_BASELINE)) == 0) {
+		baseline_enabled = true;
+		return 0;
+	}
  	/* unknown PMD power management mode */
  	return -1;
  }

@@ -2528,6 +2534,9 @@ main(int argc, char **argv)
  	/* init RTE timer library to be used late */
  	rte_timer_subsystem_init();
  
+	/* if we're running pmd-mgmt mode, don't default to baseline mode */
+	baseline_enabled = false;
+
  	/* parse application arguments (after the EAL ones) */
  	ret = parse_args(argc, argv);
  	if (ret < 0)

@@ -2767,7 +2776,8 @@ main(int argc, char **argv)
  						 "Fail to add ptype cb\n");
  			}
  
-			if (app_mode == APP_MODE_PMD_MGMT) {
+			if ((app_mode == APP_MODE_PMD_MGMT) &&
+					(baseline_enabled == false)) {