diff options
Diffstat (limited to '')
| -rw-r--r-- | tools/perf/util/values.c | 305 |
1 files changed, 305 insertions, 0 deletions
diff --git a/tools/perf/util/values.c b/tools/perf/util/values.c new file mode 100644 index 000000000..b9823f414 --- /dev/null +++ b/tools/perf/util/values.c @@ -0,0 +1,305 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <inttypes.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <errno.h> +#include <linux/zalloc.h> + +#include "values.h" +#include "debug.h" + +int perf_read_values_init(struct perf_read_values *values) +{ + values->threads_max = 16; + values->pid = malloc(values->threads_max * sizeof(*values->pid)); + values->tid = malloc(values->threads_max * sizeof(*values->tid)); + values->value = zalloc(values->threads_max * sizeof(*values->value)); + if (!values->pid || !values->tid || !values->value) { + pr_debug("failed to allocate read_values threads arrays"); + goto out_free_pid; + } + values->threads = 0; + + values->counters_max = 16; + values->counterrawid = malloc(values->counters_max + * sizeof(*values->counterrawid)); + values->countername = malloc(values->counters_max + * sizeof(*values->countername)); + if (!values->counterrawid || !values->countername) { + pr_debug("failed to allocate read_values counters arrays"); + goto out_free_counter; + } + values->counters = 0; + + return 0; + +out_free_counter: + zfree(&values->counterrawid); + zfree(&values->countername); +out_free_pid: + zfree(&values->pid); + zfree(&values->tid); + zfree(&values->value); + return -ENOMEM; +} + +void perf_read_values_destroy(struct perf_read_values *values) +{ + int i; + + if (!values->threads_max || !values->counters_max) + return; + + for (i = 0; i < values->threads; i++) + zfree(&values->value[i]); + zfree(&values->value); + zfree(&values->pid); + zfree(&values->tid); + zfree(&values->counterrawid); + for (i = 0; i < values->counters; i++) + zfree(&values->countername[i]); + zfree(&values->countername); +} + +static int perf_read_values__enlarge_threads(struct perf_read_values *values) +{ + int nthreads_max = values->threads_max * 2; + void *npid = realloc(values->pid, nthreads_max * sizeof(*values->pid)), + *ntid = realloc(values->tid, nthreads_max * sizeof(*values->tid)), + *nvalue = realloc(values->value, nthreads_max * sizeof(*values->value)); + + if (!npid || !ntid || !nvalue) + goto out_err; + + values->threads_max = nthreads_max; + values->pid = npid; + values->tid = ntid; + values->value = nvalue; + return 0; +out_err: + free(npid); + free(ntid); + free(nvalue); + pr_debug("failed to enlarge read_values threads arrays"); + return -ENOMEM; +} + +static int perf_read_values__findnew_thread(struct perf_read_values *values, + u32 pid, u32 tid) +{ + int i; + + for (i = 0; i < values->threads; i++) + if (values->pid[i] == pid && values->tid[i] == tid) + return i; + + if (values->threads == values->threads_max) { + i = perf_read_values__enlarge_threads(values); + if (i < 0) + return i; + } + + i = values->threads; + + values->value[i] = zalloc(values->counters_max * sizeof(**values->value)); + if (!values->value[i]) { + pr_debug("failed to allocate read_values counters array"); + return -ENOMEM; + } + values->pid[i] = pid; + values->tid[i] = tid; + values->threads = i + 1; + + return i; +} + +static int perf_read_values__enlarge_counters(struct perf_read_values *values) +{ + char **countername; + int i, counters_max = values->counters_max * 2; + u64 *counterrawid = realloc(values->counterrawid, counters_max * sizeof(*values->counterrawid)); + + if (!counterrawid) { + pr_debug("failed to enlarge read_values rawid array"); + goto out_enomem; + } + + countername = realloc(values->countername, counters_max * sizeof(*values->countername)); + if (!countername) { + pr_debug("failed to enlarge read_values rawid array"); + goto out_free_rawid; + } + + for (i = 0; i < values->threads; i++) { + u64 *value = realloc(values->value[i], counters_max * sizeof(**values->value)); + int j; + + if (!value) { + pr_debug("failed to enlarge read_values ->values array"); + goto out_free_name; + } + + for (j = values->counters_max; j < counters_max; j++) + value[j] = 0; + + values->value[i] = value; + } + + values->counters_max = counters_max; + values->counterrawid = counterrawid; + values->countername = countername; + + return 0; +out_free_name: + free(countername); +out_free_rawid: + free(counterrawid); +out_enomem: + return -ENOMEM; +} + +static int perf_read_values__findnew_counter(struct perf_read_values *values, + u64 rawid, const char *name) +{ + int i; + + for (i = 0; i < values->counters; i++) + if (values->counterrawid[i] == rawid) + return i; + + if (values->counters == values->counters_max) { + i = perf_read_values__enlarge_counters(values); + if (i) + return i; + } + + i = values->counters++; + values->counterrawid[i] = rawid; + values->countername[i] = strdup(name); + + return i; +} + +int perf_read_values_add_value(struct perf_read_values *values, + u32 pid, u32 tid, + u64 rawid, const char *name, u64 value) +{ + int tindex, cindex; + + tindex = perf_read_values__findnew_thread(values, pid, tid); + if (tindex < 0) + return tindex; + cindex = perf_read_values__findnew_counter(values, rawid, name); + if (cindex < 0) + return cindex; + + values->value[tindex][cindex] += value; + return 0; +} + +static void perf_read_values__display_pretty(FILE *fp, + struct perf_read_values *values) +{ + int i, j; + int pidwidth, tidwidth; + int *counterwidth; + + counterwidth = malloc(values->counters * sizeof(*counterwidth)); + if (!counterwidth) { + fprintf(fp, "INTERNAL ERROR: Failed to allocate counterwidth array\n"); + return; + } + tidwidth = 3; + pidwidth = 3; + for (j = 0; j < values->counters; j++) + counterwidth[j] = strlen(values->countername[j]); + for (i = 0; i < values->threads; i++) { + int width; + + width = snprintf(NULL, 0, "%d", values->pid[i]); + if (width > pidwidth) + pidwidth = width; + width = snprintf(NULL, 0, "%d", values->tid[i]); + if (width > tidwidth) + tidwidth = width; + for (j = 0; j < values->counters; j++) { + width = snprintf(NULL, 0, "%" PRIu64, values->value[i][j]); + if (width > counterwidth[j]) + counterwidth[j] = width; + } + } + + fprintf(fp, "# %*s %*s", pidwidth, "PID", tidwidth, "TID"); + for (j = 0; j < values->counters; j++) + fprintf(fp, " %*s", counterwidth[j], values->countername[j]); + fprintf(fp, "\n"); + + for (i = 0; i < values->threads; i++) { + fprintf(fp, " %*d %*d", pidwidth, values->pid[i], + tidwidth, values->tid[i]); + for (j = 0; j < values->counters; j++) + fprintf(fp, " %*" PRIu64, + counterwidth[j], values->value[i][j]); + fprintf(fp, "\n"); + } + free(counterwidth); +} + +static void perf_read_values__display_raw(FILE *fp, + struct perf_read_values *values) +{ + int width, pidwidth, tidwidth, namewidth, rawwidth, countwidth; + int i, j; + + tidwidth = 3; /* TID */ + pidwidth = 3; /* PID */ + namewidth = 4; /* "Name" */ + rawwidth = 3; /* "Raw" */ + countwidth = 5; /* "Count" */ + + for (i = 0; i < values->threads; i++) { + width = snprintf(NULL, 0, "%d", values->pid[i]); + if (width > pidwidth) + pidwidth = width; + width = snprintf(NULL, 0, "%d", values->tid[i]); + if (width > tidwidth) + tidwidth = width; + } + for (j = 0; j < values->counters; j++) { + width = strlen(values->countername[j]); + if (width > namewidth) + namewidth = width; + width = snprintf(NULL, 0, "%" PRIx64, values->counterrawid[j]); + if (width > rawwidth) + rawwidth = width; + } + for (i = 0; i < values->threads; i++) { + for (j = 0; j < values->counters; j++) { + width = snprintf(NULL, 0, "%" PRIu64, values->value[i][j]); + if (width > countwidth) + countwidth = width; + } + } + + fprintf(fp, "# %*s %*s %*s %*s %*s\n", + pidwidth, "PID", tidwidth, "TID", + namewidth, "Name", rawwidth, "Raw", + countwidth, "Count"); + for (i = 0; i < values->threads; i++) + for (j = 0; j < values->counters; j++) + fprintf(fp, " %*d %*d %*s %*" PRIx64 " %*" PRIu64, + pidwidth, values->pid[i], + tidwidth, values->tid[i], + namewidth, values->countername[j], + rawwidth, values->counterrawid[j], + countwidth, values->value[i][j]); +} + +void perf_read_values_display(FILE *fp, struct perf_read_values *values, int raw) +{ + if (raw) + perf_read_values__display_raw(fp, values); + else + perf_read_values__display_pretty(fp, values); +} |