[dpdk-dev] [PATCH] metrics: make number of metrics names configurable

[Stephen Hemminger]

The maximum number of metrics is hardcoded at 256.
This severely limits the usefulness of the library.
It should be configurable like other limits in DPDK.

Fixes: 349950ddb9c5 ("metrics: add information metrics library")
Cc: remy.horton at intel.com
Cc: ciara.power at intel.com
Signed-off-by: Stephen Hemminger <stephen at networkplumber.org>
---
 config/common_base               | 1 +
 config/meson.build               | 2 +-
 lib/librte_metrics/rte_metrics.h | 1 -
 3 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/config/common_base b/config/common_base
index fe30c515e5a3..f0212faec80c 100644
--- a/config/common_base
+++ b/config/common_base
@@ -917,6 +917,7 @@ CONFIG_RTE_LIBRTE_JOBSTATS=y
 # Compile the device metrics library
 #
 CONFIG_RTE_LIBRTE_METRICS=y
+CONFIG_RTE_METRICS_MAX_METRICS=256
 
 #
 # Compile the bitrate statistics library
diff --git a/config/meson.build b/config/meson.build
index 351e268c1f5b..cc8cb8fbf2f0 100644
--- a/config/meson.build
+++ b/config/meson.build
@@ -238,7 +238,7 @@ dpdk_conf.set('RTE_ENABLE_TRACE_FP', get_option('enable_trace_fp'))
 dpdk_conf.set('RTE_MAX_VFIO_GROUPS', 64)
 dpdk_conf.set('RTE_DRIVER_MEMPOOL_BUCKET_SIZE_KB', 64)
 dpdk_conf.set('RTE_LIBRTE_DPAA2_USE_PHYS_IOVA', true)
-
+dpdk_conf.set('RTE_METRICS_MAX_METRICS', 256)
 
 compile_time_cpuflags = []
 subdir(arch_subdir)
diff --git a/lib/librte_metrics/rte_metrics.h b/lib/librte_metrics/rte_metrics.h
index fbe64ddf2b47..40f015b8bb93 100644
--- a/lib/librte_metrics/rte_metrics.h
+++ b/lib/librte_metrics/rte_metrics.h
@@ -34,7 +34,6 @@ extern int metrics_initialized;
 
 /** Maximum length of metric name (including null-terminator) */
 #define RTE_METRICS_MAX_NAME_LEN 64
-#define RTE_METRICS_MAX_METRICS 256
 
 /**
  * Global metric special id.
-- 
2.26.2