Introduce helper functions to control IIO stacks list.
These helpers will be used in the follow-up patch.
Signed-off-by: Alexander Antonov <[email protected]>
---
tools/perf/arch/x86/util/iiostat.c | 125 +++++++++++++++++++++++++++++
1 file changed, 125 insertions(+)
create mode 100644 tools/perf/arch/x86/util/iiostat.c
diff --git a/tools/perf/arch/x86/util/iiostat.c b/tools/perf/arch/x86/util/iiostat.c
new file mode 100644
index 000000000000..70f93a96723f
--- /dev/null
+++ b/tools/perf/arch/x86/util/iiostat.c
@@ -0,0 +1,125 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * perf stat --iiostat
+ *
+ * Copyright (C) 2020, Intel Corporation
+ *
+ * Authors: Alexander Antonov <[email protected]>
+ */
+
+#include <api/fs/fs.h>
+#include <linux/kernel.h>
+#include <linux/err.h>
+#include <limits.h>
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <dirent.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <regex.h>
+#include "util/cpumap.h"
+#include "util/debug.h"
+#include "util/iiostat.h"
+#include "util/counts.h"
+#include "path.h"
+
+struct iio_root_port {
+ u32 domain;
+ u8 bus;
+ u8 die;
+ u8 pmu_idx;
+ int idx;
+};
+
+struct iio_root_ports_list {
+ struct iio_root_port **rps;
+ int nr_entries;
+};
+
+static void iio_root_port_show(FILE *output, const struct iio_root_port * const rp)
+{
+ if (output && rp)
+ fprintf(output, "S%d-uncore_iio_%d<%04x:%02x>\n",
+ rp->die, rp->pmu_idx, rp->domain, rp->bus);
+}
+
+static struct iio_root_port *iio_root_port_new(u32 domain, u8 bus, u8 die, u8 pmu_idx)
+{
+ struct iio_root_port *p = calloc(1, sizeof(*p));
+
+ if (p) {
+ p->domain = domain;
+ p->bus = bus;
+ p->die = die;
+ p->pmu_idx = pmu_idx;
+ }
+ return p;
+}
+
+static struct iio_root_ports_list *iio_root_ports_list_new(void)
+{
+ struct iio_root_ports_list *list = calloc(1, sizeof(*list));
+
+ if (list) {
+ list->rps = calloc(1, sizeof(struct iio_root_port *));
+ if (!list->rps) {
+ free(list);
+ list = NULL;
+ }
+ }
+
+ return list;
+}
+
+static void iio_root_ports_list_free(struct iio_root_ports_list *list)
+{
+ int idx;
+
+ if (list) {
+ for (idx = 0; idx < list->nr_entries; idx++)
+ free(list->rps[idx]);
+ free(list->rps);
+ free(list);
+ }
+}
+
+static
+struct iio_root_port *iio_root_port_find_by_notation(const struct iio_root_ports_list * const list,
+ u32 domain, u8 bus)
+{
+ int idx;
+ struct iio_root_port *rp;
+
+ if (list) {
+ for (idx = 0; idx < list->nr_entries; idx++) {
+ rp = list->rps[idx];
+ if (rp && rp->domain == domain && rp->bus == bus)
+ return rp;
+ }
+ }
+ return NULL;
+}
+
+static int iio_root_ports_list_insert(struct iio_root_ports_list *list,
+ struct iio_root_port * const rp)
+{
+ struct iio_root_port **tmp_buf;
+
+ if (list && rp) {
+ rp->idx = list->nr_entries++;
+ /* One more for NULL.*/
+ tmp_buf = realloc(list->rps, (list->nr_entries + 1) * sizeof(*list->rps));
+ if (!tmp_buf) {
+ pr_err("Failed to realloc memory\n");
+ return -ENOMEM;
+ }
+ tmp_buf[rp->idx] = rp;
+ tmp_buf[list->nr_entries] = NULL;
+ list->rps = tmp_buf;
+ }
+ return 0;
+}
--
2.19.1