Messages in this thread Patch in this message | | | From | Alexander Antonov <> | Subject | [PATCH v3 3/5] perf stat: Helper functions for PCIe root ports list in iostat mode | Date | Tue, 26 Jan 2021 11:06:17 +0300 |
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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 | 127 ++++++++++++++++++++++++++++++ 1 file changed, 127 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..3ef727f9da63 --- /dev/null +++ b/tools/perf/arch/x86/util/iostat.c @@ -0,0 +1,127 @@ +// 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++; + /* 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
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