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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-28 07:25:46 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-28 07:25:46 +0000 |
commit | 5277429a362a9cf4ce649557bf4c8fe0e20c05c0 (patch) | |
tree | 52cc97728c6fbb7393984dc3db05c5836107fe44 /plugins/plugin_kmem.c | |
parent | Initial commit. (diff) | |
download | libtraceevent-5277429a362a9cf4ce649557bf4c8fe0e20c05c0.tar.xz libtraceevent-5277429a362a9cf4ce649557bf4c8fe0e20c05c0.zip |
Adding upstream version 1:1.7.1.upstream/1%1.7.1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'plugins/plugin_kmem.c')
-rw-r--r-- | plugins/plugin_kmem.c | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/plugins/plugin_kmem.c b/plugins/plugin_kmem.c new file mode 100644 index 0000000..4b4f7f9 --- /dev/null +++ b/plugins/plugin_kmem.c @@ -0,0 +1,80 @@ +// SPDX-License-Identifier: LGPL-2.1 +/* + * Copyright (C) 2009 Red Hat Inc, Steven Rostedt <srostedt@redhat.com> + */ +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#include "event-parse.h" +#include "trace-seq.h" + +static int call_site_handler(struct trace_seq *s, struct tep_record *record, + struct tep_event *event, void *context) +{ + struct tep_format_field *field; + unsigned long long val, addr; + void *data = record->data; + const char *func; + + field = tep_find_field(event, "call_site"); + if (!field) + return 1; + + if (tep_read_number_field(field, data, &val)) + return 1; + + func = tep_find_function(event->tep, val); + if (!func) + return 1; + + addr = tep_find_function_address(event->tep, val); + + trace_seq_printf(s, "(%s+0x%x) ", func, (int)(val - addr)); + return 1; +} + +int TEP_PLUGIN_LOADER(struct tep_handle *tep) +{ + tep_register_event_handler(tep, -1, "kmem", "kfree", + call_site_handler, NULL); + + tep_register_event_handler(tep, -1, "kmem", "kmalloc", + call_site_handler, NULL); + + tep_register_event_handler(tep, -1, "kmem", "kmalloc_node", + call_site_handler, NULL); + + tep_register_event_handler(tep, -1, "kmem", "kmem_cache_alloc", + call_site_handler, NULL); + + tep_register_event_handler(tep, -1, "kmem", + "kmem_cache_alloc_node", + call_site_handler, NULL); + + tep_register_event_handler(tep, -1, "kmem", "kmem_cache_free", + call_site_handler, NULL); + return 0; +} + +void TEP_PLUGIN_UNLOADER(struct tep_handle *tep) +{ + tep_unregister_event_handler(tep, -1, "kmem", "kfree", + call_site_handler, NULL); + + tep_unregister_event_handler(tep, -1, "kmem", "kmalloc", + call_site_handler, NULL); + + tep_unregister_event_handler(tep, -1, "kmem", "kmalloc_node", + call_site_handler, NULL); + + tep_unregister_event_handler(tep, -1, "kmem", "kmem_cache_alloc", + call_site_handler, NULL); + + tep_unregister_event_handler(tep, -1, "kmem", + "kmem_cache_alloc_node", + call_site_handler, NULL); + + tep_unregister_event_handler(tep, -1, "kmem", "kmem_cache_free", + call_site_handler, NULL); +} |