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pan/perf: Add derived counter prerequisites

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This commit is contained in:
Christoph Pillmayer 2026-04-16 17:19:41 +02:00
parent 2951770119
commit 7887f4e7b5
2 changed files with 24 additions and 1 deletions
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9
src/panfrost/perf/pan_perf.c
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@ -88,6 +88,15 @@ pan_perf_init(struct pan_perf *perf, int fd)
UNREACHABLE("Performance counters missing!");
pan_kmod_perf_query_layout(perf->session, &perf->mem_layout);
unsigned unused;
perf->derived_configs[PAN_PERF_DERIVED_CONFIG_SHADER_CORE_COUNT] =
pan_query_core_count(&props, &unused);
perf->derived_configs[PAN_PERF_DERIVED_CONFIG_L2_CACHE_COUNT] =
pan_query_l2_slices(&props);
perf->derived_configs[PAN_PERF_DERIVED_CONFIG_EXT_BUS_BYTE_SIZE] =
pan_query_bus_width(&props);
}
int

16
src/panfrost/perf/pan_perf.h
View file

@ -14,7 +14,8 @@
extern "C" {
#endif
#define PAN_PERF_MAX_COUNTERS 128
/* 128 hardware counters, but there can be more derived ones. */
#define PAN_PERF_MAX_COUNTERS 190
enum pan_perf_counter_categories {
PAN_PERF_COUNTER_CAT_FRONTEND,
@ -50,6 +51,15 @@ enum pan_perf_counter_units {
PAN_PERF_COUNTER_UNITS_BYTES_PER_SECOND,
};
enum pan_perf_derived_config {
PAN_PERF_DERIVED_CONFIG_SHADER_CORE_COUNT,
PAN_PERF_DERIVED_CONFIG_EXT_BUS_BYTE_SIZE,
PAN_PERF_DERIVED_CONFIG_L2_CACHE_COUNT,
PAN_PERF_DERIVED_CONFIG_LAST = PAN_PERF_DERIVED_CONFIG_L2_CACHE_COUNT,
};
struct pan_perf;
struct pan_perf_counter {
const char *name;
const char *desc;
@ -58,6 +68,9 @@ struct pan_perf_counter {
// Offset of this counter's value within the category
uint32_t offset;
enum pan_perf_counter_categories category;
/* Optional, function to compute the derived counters value. */
double (*derived)(const struct pan_perf*, const double*, uint8_t);
};
struct pan_perf_category {
@ -82,6 +95,7 @@ struct pan_perf {
struct pan_kmod_perf_session *session;
const struct pan_perf_config *cfg;
struct pan_kmod_perf_buffer_layout mem_layout;
double derived_configs[PAN_PERF_DERIVED_CONFIG_LAST + 1];
};
int64_t pan_perf_counter_read(const struct pan_perf *perf,