From 9cc63f8bcd560c760d0b12e15bba8f81c86237cf Mon Sep 17 00:00:00 2001 From: "Paul E. McKenney" Date: Fri, 14 Aug 2026 15:43:51 -0700 Subject: Merge branches 'expcb.2026.07.24a', 'misc.2026.07.30a', 'rcu-tasks.2026.07.30a', 'srcu.2026.08.11a' and 'torture.2026.08.14a' into HEAD Changes: Make expedited grace periods expedite normal RCU callbacks Miscellaneous fixes: * Improve diagnostic output with character task states. * Mark accesses to inform KCSAN of concurrency design. * Move from kmalloc() to kmalloc_obj(). * Documentation updates. * Improve handling of RCU deferred quiescent states. * Clean up unused function arguments and structure fields. * Reduce show_rcu_gp_kthreads() stack space. Tasks RCU updates: * Clean up after SRCU re-implementation of Tasks Trace RCU. * Mark accesses to inform KCSAN of concurrency design. * Add ->lazy_timer status to diagnostic output. * Remove an unnecessary memory barrier. * Fix a data race, courtesy of KCSAN. * Documentation updates. * Convert cond_resched_tasks_rcu_qs() from macro to static inline function. SRCU updates: * Add Rust helpers for SRCU. * Avoid losing queued work at cleanup_srcu_struct() time. Torture-test updates: * Preparation work for immediate RCU priority deboosting. * Test RCU readers from real interrupt handlers (as opposed to softirq). * Simplify code through use of cpumask_next_wrap(). * Improve diagnostic output with character task states. * Add rcutorture.nwriters parameter to allow lightweight stall testing, and rcutorture.stall_only to make doing so easier. * Test an RCU Tasks Trace grace period implying an RCU grace period. * Make RCU Tasks Trace torturing track reader batches. * Fix a data race, courtesy of KCSAN. * Plug a shuffle_tmp_mask memory leak on kthread spawn failure. --- tools/perf/builtin-data.c | 118 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 118 insertions(+) create mode 100644 tools/perf/builtin-data.c (limited to 'tools/perf/builtin-data.c') diff --git a/tools/perf/builtin-data.c b/tools/perf/builtin-data.c new file mode 100644 index 000000000..1dd73ed6b --- /dev/null +++ b/tools/perf/builtin-data.c @@ -0,0 +1,118 @@ +// SPDX-License-Identifier: GPL-2.0 +#include +#include +#include +#include "builtin.h" +#include "debug.h" +#include +#include "data-convert.h" +#include "util/util.h" + +typedef int (*data_cmd_fn_t)(int argc, const char **argv); + +struct data_cmd { + const char *name; + const char *summary; + data_cmd_fn_t fn; +}; + +static struct data_cmd data_cmds[]; + +#define for_each_cmd(cmd) \ + for (cmd = data_cmds; cmd && cmd->name; cmd++) + +static const char * const data_subcommands[] = { "convert", NULL }; + +static const char *data_usage[] = { + "perf data convert []", + NULL +}; + +static const char *to_json; +static const char *to_ctf; +static struct perf_data_convert_opts opts = { + .force = false, + .all = false, + .time_str = NULL, +}; + +static const struct option data_options[] = { + OPT_INCR('v', "verbose", &verbose, "be more verbose"), + OPT_STRING('i', "input", &input_name, "file", "input file name"), + OPT_STRING(0, "to-json", &to_json, NULL, "Convert to JSON format"), + OPT_STRING(0, "to-ctf", &to_ctf, NULL, "Convert to CTF format"), + OPT_BOOLEAN(0, "tod", &opts.tod, "Convert time to wall clock time"), + OPT_BOOLEAN('f', "force", &opts.force, "don't complain, do it"), + OPT_BOOLEAN(0, "all", &opts.all, "Convert all events"), + OPT_STRING(0, "time", &opts.time_str, "str", + "Time span of interest (start,stop)"), + OPT_END() + }; + +static int cmd_data_convert(int argc, const char **argv) +{ + + argc = parse_options(argc, argv, data_options, + data_usage, 0); + if (argc) { + usage_with_options(data_usage, data_options); + return -1; + } + + if (to_json && to_ctf) { + pr_err("You cannot specify both --to-ctf and --to-json.\n"); + return -1; + } + if (!to_json && !to_ctf) { + pr_err("You must specify one of --to-ctf or --to-json.\n"); + return -1; + } + + if (to_json) + return bt_convert__perf2json(input_name, to_json, &opts); + + if (to_ctf) { +#if defined(HAVE_BABELTRACE2_CTF_WRITER_SUPPORT) && defined(HAVE_LIBTRACEEVENT) + return bt_convert__perf2ctf(input_name, to_ctf, &opts); +#else + pr_err("The babeltrace2 ctf support is not compiled in. Ensure you have both\n" + "libbabeltrace2-dev[el] and libtraceevent-dev[el] installed or set\n" + "PKG_CONFIG_PATH to find a local installation of those libraries.\n"); + return -1; +#endif + } + + return 0; +} + +static struct data_cmd data_cmds[] = { + { "convert", "converts data file between formats", cmd_data_convert }, + { .name = NULL, }, +}; + +int cmd_data(int argc, const char **argv) +{ + struct data_cmd *cmd; + const char *cmdstr; + + argc = parse_options_subcommand(argc, argv, data_options, data_subcommands, data_usage, + PARSE_OPT_STOP_AT_NON_OPTION); + + if (!argc) { + usage_with_options(data_usage, data_options); + return -1; + } + + cmdstr = argv[0]; + + for_each_cmd(cmd) { + if (strcmp(cmd->name, cmdstr)) + continue; + + return cmd->fn(argc, argv); + } + + pr_err("Unknown command: %s\n", cmdstr); + usage_with_options(data_usage, data_options); + return -1; +} -- cgit v1.3.1