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Diffstat (limited to 'sys-utils/lsirq.c')
| -rw-r--r-- | sys-utils/lsirq.c | 152 |
1 files changed, 152 insertions, 0 deletions
diff --git a/sys-utils/lsirq.c b/sys-utils/lsirq.c new file mode 100644 index 0000000..1a90efe --- /dev/null +++ b/sys-utils/lsirq.c @@ -0,0 +1,152 @@ +/* + * lsirq - utility to display kernel interrupt information. + * + * Copyright (C) 2019 zhenwei pi <pizhenwei@bytedance.com> + * Copyright (C) 2020 Karel Zak <kzak@redhat.com> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ +#include <ctype.h> +#include <errno.h> +#include <getopt.h> +#include <limits.h> +#include <locale.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sys/types.h> +#include <unistd.h> + +#include <libsmartcols.h> + +#include "closestream.h" +#include "optutils.h" +#include "strutils.h" +#include "xalloc.h" + +#include "irq-common.h" + +static int print_irq_data(struct irq_output *out, int softirq) +{ + struct libscols_table *table; + + table = get_scols_table(out, NULL, NULL, softirq); + if (!table) + return -1; + + scols_print_table(table); + scols_unref_table(table); + return 0; +} + +static void __attribute__((__noreturn__)) usage(void) +{ + fputs(USAGE_HEADER, stdout); + printf(_(" %s [options]\n"), program_invocation_short_name); + fputs(USAGE_SEPARATOR, stdout); + + puts(_("Utility to display kernel interrupt information.")); + + fputs(USAGE_OPTIONS, stdout); + fputs(_(" -J, --json use JSON output format\n"), stdout); + fputs(_(" -P, --pairs use key=\"value\" output format\n"), stdout); + fputs(_(" -n, --noheadings don't print headings\n"), stdout); + fputs(_(" -o, --output <list> define which output columns to use\n"), stdout); + fputs(_(" -s, --sort <column> specify sort column\n"), stdout); + fputs(_(" -S, --softirq show softirqs instead of interrupts\n"), stdout); + fputs(USAGE_SEPARATOR, stdout); + printf(USAGE_HELP_OPTIONS(22)); + + fputs(USAGE_COLUMNS, stdout); + irq_print_columns(stdout, 1); + + printf(USAGE_MAN_TAIL("lsirq(1)")); + exit(EXIT_SUCCESS); +} + +int main(int argc, char **argv) +{ + struct irq_output out = { + .ncolumns = 0 + }; + static const struct option longopts[] = { + {"sort", required_argument, NULL, 's'}, + {"noheadings", no_argument, NULL, 'n'}, + {"output", required_argument, NULL, 'o'}, + {"softirq", no_argument, NULL, 'S'}, + {"json", no_argument, NULL, 'J'}, + {"pairs", no_argument, NULL, 'P'}, + {"help", no_argument, NULL, 'h'}, + {"version", no_argument, NULL, 'V'}, + {NULL, 0, NULL, 0} + }; + int c; + const char *outarg = NULL; + static const ul_excl_t excl[] = { /* rows and cols in ASCII order */ + {'J', 'P'}, + {0} + }; + int excl_st[ARRAY_SIZE(excl)] = UL_EXCL_STATUS_INIT; + int softirq = 0; + + setlocale(LC_ALL, ""); + + while ((c = getopt_long(argc, argv, "no:s:ShJPV", longopts, NULL)) != -1) { + err_exclusive_options(c, longopts, excl, excl_st); + + switch (c) { + case 'J': + out.json = 1; + break; + case 'P': + out.pairs = 1; + break; + case 'n': + out.no_headings = 1; + break; + case 'o': + outarg = optarg; + break; + case 's': + set_sort_func_by_name(&out, optarg); + break; + case 'S': + softirq = 1; + break; + case 'V': + print_version(EXIT_SUCCESS); + case 'h': + usage(); + default: + errtryhelp(EXIT_FAILURE); + } + } + + /* default */ + if (!out.ncolumns) { + out.columns[out.ncolumns++] = COL_IRQ; + out.columns[out.ncolumns++] = COL_TOTAL; + out.columns[out.ncolumns++] = COL_NAME; + } + + /* add -o [+]<list> to putput */ + if (outarg && string_add_to_idarray(outarg, out.columns, + ARRAY_SIZE(out.columns), + &out.ncolumns, + irq_column_name_to_id) < 0) + exit(EXIT_FAILURE); + + return print_irq_data(&out, softirq) == 0 ? EXIT_SUCCESS : EXIT_FAILURE; +} |