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-rw-r--r--sys-utils/lsirq.c152
1 files changed, 152 insertions, 0 deletions
diff --git a/sys-utils/lsirq.c b/sys-utils/lsirq.c
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--- /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, 0, NULL);
+ 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;
+}