diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/intel/perf/gen_perf.c | 188 | ||||
| -rw-r--r-- | src/intel/perf/gen_perf.h | 20 |
2 files changed, 181 insertions, 27 deletions
diff --git a/src/intel/perf/gen_perf.c b/src/intel/perf/gen_perf.c index 2e71df83576..f40d9acd870 100644 --- a/src/intel/perf/gen_perf.c +++ b/src/intel/perf/gen_perf.c @@ -40,6 +40,7 @@ #include "dev/gen_debug.h" #include "dev/gen_device_info.h" #include "util/bitscan.h" +#include "util/mesa-sha1.h" #include "util/u_math.h" #define FILE_DEBUG_FLAG DEBUG_PERFMON @@ -387,6 +388,11 @@ gen_perf_active_queries(struct gen_perf_context *perf_ctx, } } +static inline uint64_t to_user_pointer(void *ptr) +{ + return (uintptr_t) ptr; +} + static bool get_sysfs_dev_dir(struct gen_perf_config *perf, int fd) { @@ -554,15 +560,7 @@ enumerate_sysfs_metrics(struct gen_perf_config *perf) metric_entry->d_name); if (entry) { uint64_t id; - - len = snprintf(buf, sizeof(buf), "%s/metrics/%s/id", - perf->sysfs_dev_dir, metric_entry->d_name); - if (len < 0 || len >= sizeof(buf)) { - DBG("Failed to concatenate path to sysfs metric id file\n"); - continue; - } - - if (!read_file_uint64(buf, &id)) { + if (!gen_perf_load_metric_id(perf, metric_entry->d_name, &id)) { DBG("Failed to read metric set id from %s: %m", buf); continue; } @@ -584,6 +582,56 @@ kernel_has_dynamic_config_support(struct gen_perf_config *perf, int fd) &invalid_config_id) < 0 && errno == ENOENT; } +static int +i915_query_items(struct gen_perf_config *perf, int fd, + struct drm_i915_query_item *items, uint32_t n_items) +{ + struct drm_i915_query q = { + .num_items = n_items, + .items_ptr = to_user_pointer(items), + }; + return gen_ioctl(fd, DRM_IOCTL_I915_QUERY, &q); +} + +static bool +i915_query_perf_config_supported(struct gen_perf_config *perf, int fd) +{ + struct drm_i915_query_item item = { + .query_id = DRM_I915_QUERY_PERF_CONFIG, + .flags = DRM_I915_QUERY_PERF_CONFIG_LIST, + }; + + return i915_query_items(perf, fd, &item, 1) == 0 && item.length > 0; +} + +static bool +i915_query_perf_config_data(struct gen_perf_config *perf, + int fd, const char *guid, + struct drm_i915_perf_oa_config *config) +{ + struct { + struct drm_i915_query_perf_config query; + struct drm_i915_perf_oa_config config; + } item_data; + struct drm_i915_query_item item = { + .query_id = DRM_I915_QUERY_PERF_CONFIG, + .flags = DRM_I915_QUERY_PERF_CONFIG_DATA_FOR_UUID, + .data_ptr = to_user_pointer(&item_data), + .length = sizeof(item_data), + }; + + memset(&item_data, 0, sizeof(item_data)); + memcpy(item_data.query.uuid, guid, sizeof(item_data.query.uuid)); + memcpy(&item_data.config, config, sizeof(item_data.config)); + + if (!(i915_query_items(perf, fd, &item, 1) == 0 && item.length > 0)) + return false; + + memcpy(config, &item_data.config, sizeof(item_data.config)); + + return true; +} + bool gen_perf_load_metric_id(struct gen_perf_config *perf_cfg, const char *guid, @@ -598,14 +646,34 @@ gen_perf_load_metric_id(struct gen_perf_config *perf_cfg, return read_file_uint64(config_path, metric_id); } +static uint64_t +i915_add_config(struct gen_perf_config *perf, int fd, + const struct gen_perf_registers *config, + const char *guid) +{ + struct drm_i915_perf_oa_config i915_config = { 0, }; + + memcpy(i915_config.uuid, guid, sizeof(i915_config.uuid)); + + i915_config.n_mux_regs = config->n_mux_regs; + i915_config.mux_regs_ptr = to_user_pointer(config->mux_regs); + + i915_config.n_boolean_regs = config->n_b_counter_regs; + i915_config.boolean_regs_ptr = to_user_pointer(config->b_counter_regs); + + i915_config.n_flex_regs = config->n_flex_regs; + i915_config.flex_regs_ptr = to_user_pointer(config->flex_regs); + + int ret = gen_ioctl(fd, DRM_IOCTL_I915_PERF_ADD_CONFIG, &i915_config); + return ret > 0 ? ret : 0; +} + static void init_oa_configs(struct gen_perf_config *perf, int fd) { hash_table_foreach(perf->oa_metrics_table, entry) { const struct gen_perf_query_info *query = entry->data; - struct drm_i915_perf_oa_config config; uint64_t config_id; - int ret; if (gen_perf_load_metric_id(perf, query->guid, &config_id)) { DBG("metric set: %s (already loaded)\n", query->guid); @@ -613,20 +681,7 @@ init_oa_configs(struct gen_perf_config *perf, int fd) continue; } - memset(&config, 0, sizeof(config)); - - memcpy(config.uuid, query->guid, sizeof(config.uuid)); - - config.n_mux_regs = query->config.n_mux_regs; - config.mux_regs_ptr = (uintptr_t) query->config.mux_regs; - - config.n_boolean_regs = query->config.n_b_counter_regs; - config.boolean_regs_ptr = (uintptr_t) query->config.b_counter_regs; - - config.n_flex_regs = query->config.n_flex_regs; - config.flex_regs_ptr = (uintptr_t) query->config.flex_regs; - - ret = gen_ioctl(fd, DRM_IOCTL_I915_PERF_ADD_CONFIG, &config); + int ret = i915_add_config(perf, fd, &query->config, query->guid); if (ret < 0) { DBG("Failed to load \"%s\" (%s) metrics set in kernel: %s\n", query->name, query->guid, strerror(errno)); @@ -861,6 +916,8 @@ load_oa_metrics(struct gen_perf_config *perf, int fd, bool i915_perf_oa_available = false; struct stat sb; + perf->i915_query_supported = i915_query_perf_config_supported(perf, fd); + /* The existence of this sysctl parameter implies the kernel supports * the i915 perf interface. */ @@ -905,6 +962,87 @@ load_oa_metrics(struct gen_perf_config *perf, int fd, return true; } +struct gen_perf_registers * +gen_perf_load_configuration(struct gen_perf_config *perf_cfg, int fd, const char *guid) +{ + if (!perf_cfg->i915_query_supported) + return NULL; + + struct drm_i915_perf_oa_config i915_config = { 0, }; + if (!i915_query_perf_config_data(perf_cfg, fd, guid, &i915_config)) + return NULL; + + struct gen_perf_registers *config = rzalloc(NULL, struct gen_perf_registers); + config->n_flex_regs = i915_config.n_flex_regs; + config->flex_regs = rzalloc_array(config, struct gen_perf_query_register_prog, config->n_flex_regs); + config->n_mux_regs = i915_config.n_mux_regs; + config->mux_regs = rzalloc_array(config, struct gen_perf_query_register_prog, config->n_mux_regs); + config->n_b_counter_regs = i915_config.n_boolean_regs; + config->b_counter_regs = rzalloc_array(config, struct gen_perf_query_register_prog, config->n_b_counter_regs); + + /* + * struct gen_perf_query_register_prog maps exactly to the tuple of + * (register offset, register value) returned by the i915. + */ + i915_config.flex_regs_ptr = to_user_pointer(config->flex_regs); + i915_config.mux_regs_ptr = to_user_pointer(config->mux_regs); + i915_config.boolean_regs_ptr = to_user_pointer(config->b_counter_regs); + if (!i915_query_perf_config_data(perf_cfg, fd, guid, &i915_config)) { + ralloc_free(config); + return NULL; + } + + return config; +} + +uint64_t +gen_perf_store_configuration(struct gen_perf_config *perf_cfg, int fd, + const struct gen_perf_registers *config, + const char *guid) +{ + if (guid) + return i915_add_config(perf_cfg, fd, config, guid); + + struct mesa_sha1 sha1_ctx; + _mesa_sha1_init(&sha1_ctx); + + if (config->flex_regs) { + _mesa_sha1_update(&sha1_ctx, config->flex_regs, + sizeof(config->flex_regs[0]) * + config->n_flex_regs); + } + if (config->mux_regs) { + _mesa_sha1_update(&sha1_ctx, config->mux_regs, + sizeof(config->mux_regs[0]) * + config->n_mux_regs); + } + if (config->b_counter_regs) { + _mesa_sha1_update(&sha1_ctx, config->b_counter_regs, + sizeof(config->b_counter_regs[0]) * + config->n_b_counter_regs); + } + + uint8_t hash[20]; + _mesa_sha1_final(&sha1_ctx, hash); + + char formatted_hash[41]; + _mesa_sha1_format(formatted_hash, hash); + + char generated_guid[37]; + snprintf(generated_guid, sizeof(generated_guid), + "%.8s-%.4s-%.4s-%.4s-%.12s", + &formatted_hash[0], &formatted_hash[8], + &formatted_hash[8 + 4], &formatted_hash[8 + 4 + 4], + &formatted_hash[8 + 4 + 4 + 4]); + + /* Check if already present. */ + uint64_t id; + if (gen_perf_load_metric_id(perf_cfg, generated_guid, &id)) + return id; + + return i915_add_config(perf_cfg, fd, config, generated_guid); +} + /* Accumulate 32bits OA counters */ static inline void accumulate_uint32(const uint32_t *report0, diff --git a/src/intel/perf/gen_perf.h b/src/intel/perf/gen_perf.h index f43286f73a6..46d37e07c25 100644 --- a/src/intel/perf/gen_perf.h +++ b/src/intel/perf/gen_perf.h @@ -140,7 +140,7 @@ struct gen_perf_query_register_prog { }; /* Register programming for a given query */ -struct gen_perf_configuration { +struct gen_perf_registers { struct gen_perf_query_register_prog *flex_regs; uint32_t n_flex_regs; @@ -175,10 +175,12 @@ struct gen_perf_query_info { int b_offset; int c_offset; - struct gen_perf_configuration config; + struct gen_perf_registers config; }; struct gen_perf_config { + bool i915_query_supported; + struct gen_perf_query_info *queries; int n_queries; @@ -244,6 +246,20 @@ bool gen_perf_load_metric_id(struct gen_perf_config *perf_cfg, const char *guid, uint64_t *metric_id); +/** Load a configuation's content from i915 using a guid. + */ +struct gen_perf_registers *gen_perf_load_configuration(struct gen_perf_config *perf_cfg, + int fd, const char *guid); + +/** Store a configuration into i915 using guid and return a new metric id. + * + * If guid is NULL, then a generated one will be provided by hashing the + * content of the configuration. + */ +uint64_t gen_perf_store_configuration(struct gen_perf_config *perf_cfg, int fd, + const struct gen_perf_registers *config, + const char *guid); + /** Read the slice/unslice frequency from 2 OA reports and store then into * result. */ |