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58d5f0d437
Monitors generated with dot2k have their registration function (the one called during monitor initialisation) return always 0, even if the registration failed on RV side. This can hide potential errors. Return the value returned by the RV register function. Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Tomas Glozar <tglozar@redhat.com> Cc: Juri Lelli <jlelli@redhat.com> Cc: Clark Williams <williams@redhat.com> Cc: John Kacur <jkacur@redhat.com> Link: https://lore.kernel.org/20250723161240.194860-6-gmonaco@redhat.com Reviewed-by: Nam Cao <namcao@linutronix.de> Signed-off-by: Gabriele Monaco <gmonaco@redhat.com> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
85 lines
1.9 KiB
C
85 lines
1.9 KiB
C
// SPDX-License-Identifier: GPL-2.0
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#include <linux/ftrace.h>
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#include <linux/tracepoint.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/rv.h>
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#include <rv/instrumentation.h>
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#include <rv/da_monitor.h>
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#define MODULE_NAME "snroc"
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#include <trace/events/sched.h>
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#include <rv_trace.h>
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#include <monitors/sched/sched.h>
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#include "snroc.h"
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static struct rv_monitor rv_snroc;
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DECLARE_DA_MON_PER_TASK(snroc, unsigned char);
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static void handle_sched_set_state(void *data, struct task_struct *tsk, int state)
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{
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da_handle_event_snroc(tsk, sched_set_state_snroc);
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}
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static void handle_sched_switch(void *data, bool preempt,
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struct task_struct *prev,
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struct task_struct *next,
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unsigned int prev_state)
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{
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da_handle_start_event_snroc(prev, sched_switch_out_snroc);
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da_handle_event_snroc(next, sched_switch_in_snroc);
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}
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static int enable_snroc(void)
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{
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int retval;
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retval = da_monitor_init_snroc();
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if (retval)
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return retval;
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rv_attach_trace_probe("snroc", sched_set_state_tp, handle_sched_set_state);
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rv_attach_trace_probe("snroc", sched_switch, handle_sched_switch);
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return 0;
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}
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static void disable_snroc(void)
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{
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rv_snroc.enabled = 0;
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rv_detach_trace_probe("snroc", sched_set_state_tp, handle_sched_set_state);
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rv_detach_trace_probe("snroc", sched_switch, handle_sched_switch);
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da_monitor_destroy_snroc();
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}
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static struct rv_monitor rv_snroc = {
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.name = "snroc",
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.description = "set non runnable on its own context.",
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.enable = enable_snroc,
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.disable = disable_snroc,
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.reset = da_monitor_reset_all_snroc,
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.enabled = 0,
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};
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static int __init register_snroc(void)
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{
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return rv_register_monitor(&rv_snroc, &rv_sched);
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}
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static void __exit unregister_snroc(void)
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{
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rv_unregister_monitor(&rv_snroc);
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}
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module_init(register_snroc);
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module_exit(unregister_snroc);
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MODULE_LICENSE("GPL");
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MODULE_AUTHOR("Gabriele Monaco <gmonaco@redhat.com>");
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MODULE_DESCRIPTION("snroc: set non runnable on its own context.");
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