From: Alexander Antonov <alexander.antonov@linux.intel.com>
To: acme@kernel.org
Cc: linux-kernel@vger.kernel.org, jolsa@redhat.com,
ak@linux.intel.com, alexander.shishkin@linux.intel.com,
mark.rutland@arm.com, namhyung@kernel.org, irogers@google.com,
mingo@redhat.com, peterz@infradead.org,
alexander.antonov@linux.intel.com
Subject: [PATCH v4 3/5] perf stat: Helper functions for PCIe root ports list in iostat mode
Date: Wed, 3 Feb 2021 16:58:28 +0300 [thread overview]
Message-ID: <20210203135830.38568-4-alexander.antonov@linux.intel.com> (raw)
In-Reply-To: <20210203135830.38568-1-alexander.antonov@linux.intel.com>
Introduce helper functions to control PCIe root ports list.
These helpers will be used in the follow-up patch.
Signed-off-by: Alexander Antonov <alexander.antonov@linux.intel.com>
---
tools/perf/arch/x86/util/iostat.c | 124 ++++++++++++++++++++++++++++++
1 file changed, 124 insertions(+)
create mode 100644 tools/perf/arch/x86/util/iostat.c
diff --git a/tools/perf/arch/x86/util/iostat.c b/tools/perf/arch/x86/util/iostat.c
new file mode 100644
index 000000000000..961e540106e6
--- /dev/null
+++ b/tools/perf/arch/x86/util/iostat.c
@@ -0,0 +1,124 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * perf iostat
+ *
+ * Copyright (C) 2020, Intel Corporation
+ *
+ * Authors: Alexander Antonov <alexander.antonov@linux.intel.com>
+ */
+
+#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/iostat.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++;
+ tmp_buf = realloc(list->rps,
+ list->nr_entries * sizeof(*list->rps));
+ if (!tmp_buf) {
+ pr_err("Failed to realloc memory\n");
+ return -ENOMEM;
+ }
+ tmp_buf[rp->idx] = rp;
+ list->rps = tmp_buf;
+ }
+ return 0;
+}
--
2.19.1
next prev parent reply other threads:[~2021-02-03 14:02 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-03 13:58 [PATCH v4 0/5] perf stat: Introduce iostat mode to provide I/O performance metrics Alexander Antonov
2021-02-03 13:58 ` [PATCH v4 1/5] perf stat: Add AGGR_PCIE_PORT mode Alexander Antonov
2021-02-04 12:07 ` Namhyung Kim
2021-02-08 11:30 ` Alexander Antonov
2021-02-10 10:02 ` Namhyung Kim
2021-02-03 13:58 ` [PATCH v4 2/5] perf stat: Basic support for iostat in perf Alexander Antonov
2021-02-04 12:22 ` Namhyung Kim
2021-02-08 11:55 ` Alexander Antonov
2021-02-10 10:07 ` Namhyung Kim
2021-02-03 13:58 ` Alexander Antonov [this message]
2021-02-04 12:32 ` [PATCH v4 3/5] perf stat: Helper functions for PCIe root ports list in iostat mode Namhyung Kim
2021-02-08 11:58 ` Alexander Antonov
2021-02-03 13:58 ` [PATCH v4 4/5] perf stat: Enable iostat mode for x86 platforms Alexander Antonov
2021-03-09 7:51 ` liuqi (BA)
2021-03-10 16:19 ` Alexander Antonov
2021-03-11 7:02 ` liuqi (BA)
2021-02-03 13:58 ` [PATCH v4 5/5] perf: Update .gitignore file Alexander Antonov
2021-02-03 20:55 ` [PATCH v4 0/5] perf stat: Introduce iostat mode to provide I/O performance metrics Arnaldo Carvalho de Melo
2021-02-04 12:35 ` Namhyung Kim
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