67 lines
1.4 KiB
C
67 lines
1.4 KiB
C
// SPDX-License-Identifier: LGPL-2.1
|
|
/*
|
|
* Copyright (C) 2015 Red Hat Inc, Steven Rostedt <srostedt@redhat.com>
|
|
*/
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
#include "event-parse.h"
|
|
|
|
enum tlb_flush_reason {
|
|
TLB_FLUSH_ON_TASK_SWITCH,
|
|
TLB_REMOTE_SHOOTDOWN,
|
|
TLB_LOCAL_SHOOTDOWN,
|
|
TLB_LOCAL_MM_SHOOTDOWN,
|
|
NR_TLB_FLUSH_REASONS,
|
|
};
|
|
|
|
static int tlb_flush_handler(struct trace_seq *s, struct tep_record *record,
|
|
struct tep_event *event, void *context)
|
|
{
|
|
unsigned long long val;
|
|
|
|
trace_seq_printf(s, "pages=");
|
|
|
|
tep_print_num_field(s, "%ld", event, "pages", record, 1);
|
|
|
|
if (tep_get_field_val(s, event, "reason", record, &val, 1) < 0)
|
|
return -1;
|
|
|
|
trace_seq_puts(s, " reason=");
|
|
|
|
switch (val) {
|
|
case TLB_FLUSH_ON_TASK_SWITCH:
|
|
trace_seq_puts(s, "flush on task switch");
|
|
break;
|
|
case TLB_REMOTE_SHOOTDOWN:
|
|
trace_seq_puts(s, "remote shootdown");
|
|
break;
|
|
case TLB_LOCAL_SHOOTDOWN:
|
|
trace_seq_puts(s, "local shootdown");
|
|
break;
|
|
case TLB_LOCAL_MM_SHOOTDOWN:
|
|
trace_seq_puts(s, "local mm shootdown");
|
|
break;
|
|
}
|
|
|
|
trace_seq_printf(s, " (%lld)", val);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int TEP_PLUGIN_LOADER(struct tep_handle *tep)
|
|
{
|
|
tep_register_event_handler(tep, -1, "tlb", "tlb_flush",
|
|
tlb_flush_handler, NULL);
|
|
|
|
return 0;
|
|
}
|
|
|
|
void TEP_PLUGIN_UNLOADER(struct tep_handle *tep)
|
|
{
|
|
tep_unregister_event_handler(tep, -1,
|
|
"tlb", "tlb_flush",
|
|
tlb_flush_handler, NULL);
|
|
}
|