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