diff options
| -rw-r--r-- | kernel/trace/kmemtrace.c | 128 |
1 files changed, 67 insertions, 61 deletions
diff --git a/kernel/trace/kmemtrace.c b/kernel/trace/kmemtrace.c index d8c2d0c91b4c..5011f4d91e37 100644 --- a/kernel/trace/kmemtrace.c +++ b/kernel/trace/kmemtrace.c @@ -6,15 +6,16 @@ * Copyright (C) 2008 Frederic Weisbecker <fweisbec@gmail.com> */ -#include <linux/dcache.h> +#include <linux/tracepoint.h> +#include <linux/seq_file.h> #include <linux/debugfs.h> +#include <linux/dcache.h> #include <linux/fs.h> -#include <linux/seq_file.h> -#include <linux/tracepoint.h> + #include <trace/kmemtrace.h> -#include "trace.h" #include "trace_output.h" +#include "trace.h" /* Select an alternative, minimalistic output than the original one */ #define TRACE_KMEM_OPT_MINIMAL 0x1 @@ -26,8 +27,8 @@ static struct tracer_opt kmem_opts[] = { }; static struct tracer_flags kmem_tracer_flags = { - .val = 0, - .opts = kmem_opts + .val = 0, + .opts = kmem_opts }; static struct trace_array *kmemtrace_array; @@ -41,24 +42,25 @@ static inline void kmemtrace_alloc(enum kmemtrace_type_id type_id, gfp_t gfp_flags, int node) { - struct ring_buffer_event *event; - struct kmemtrace_alloc_entry *entry; struct trace_array *tr = kmemtrace_array; + struct kmemtrace_alloc_entry *entry; + struct ring_buffer_event *event; event = ring_buffer_lock_reserve(tr->buffer, sizeof(*entry)); if (!event) return; - entry = ring_buffer_event_data(event); + + entry = ring_buffer_event_data(event); tracing_generic_entry_update(&entry->ent, 0, 0); - entry->ent.type = TRACE_KMEM_ALLOC; - entry->type_id = type_id; - entry->call_site = call_site; - entry->ptr = ptr; - entry->bytes_req = bytes_req; - entry->bytes_alloc = bytes_alloc; - entry->gfp_flags = gfp_flags; - entry->node = node; + entry->ent.type = TRACE_KMEM_ALLOC; + entry->type_id = type_id; + entry->call_site = call_site; + entry->ptr = ptr; + entry->bytes_req = bytes_req; + entry->bytes_alloc = bytes_alloc; + entry->gfp_flags = gfp_flags; + entry->node = node; ring_buffer_unlock_commit(tr->buffer, event); @@ -69,9 +71,9 @@ static inline void kmemtrace_free(enum kmemtrace_type_id type_id, unsigned long call_site, const void *ptr) { - struct ring_buffer_event *event; - struct kmemtrace_free_entry *entry; struct trace_array *tr = kmemtrace_array; + struct kmemtrace_free_entry *entry; + struct ring_buffer_event *event; event = ring_buffer_lock_reserve(tr->buffer, sizeof(*entry)); if (!event) @@ -79,10 +81,10 @@ static inline void kmemtrace_free(enum kmemtrace_type_id type_id, entry = ring_buffer_event_data(event); tracing_generic_entry_update(&entry->ent, 0, 0); - entry->ent.type = TRACE_KMEM_FREE; - entry->type_id = type_id; - entry->call_site = call_site; - entry->ptr = ptr; + entry->ent.type = TRACE_KMEM_FREE; + entry->type_id = type_id; + entry->call_site = call_site; + entry->ptr = ptr; ring_buffer_unlock_commit(tr->buffer, event); @@ -216,48 +218,50 @@ static void kmemtrace_headers(struct seq_file *s) #define KMEMTRACE_USER_FREE 1 struct kmemtrace_user_event { - u8 event_id; - u8 type_id; - u16 event_size; - u32 cpu; - u64 timestamp; - unsigned long call_site; - unsigned long ptr; + u8 event_id; + u8 type_id; + u16 event_size; + u32 cpu; + u64 timestamp; + unsigned long call_site; + unsigned long ptr; }; struct kmemtrace_user_event_alloc { - size_t bytes_req; - size_t bytes_alloc; - unsigned gfp_flags; - int node; + size_t bytes_req; + size_t bytes_alloc; + unsigned gfp_flags; + int node; }; static enum print_line_t kmemtrace_print_alloc_user(struct trace_iterator *iter, struct kmemtrace_alloc_entry *entry) { + struct kmemtrace_user_event_alloc *ev_alloc; struct trace_seq *s = &iter->seq; struct kmemtrace_user_event *ev; - struct kmemtrace_user_event_alloc *ev_alloc; ev = trace_seq_reserve(s, sizeof(*ev)); if (!ev) return TRACE_TYPE_PARTIAL_LINE; - ev->event_id = KMEMTRACE_USER_ALLOC; - ev->type_id = entry->type_id; - ev->event_size = sizeof(*ev) + sizeof(*ev_alloc); - ev->cpu = iter->cpu; - ev->timestamp = iter->ts; - ev->call_site = entry->call_site; - ev->ptr = (unsigned long) entry->ptr; + + ev->event_id = KMEMTRACE_USER_ALLOC; + ev->type_id = entry->type_id; + ev->event_size = sizeof(*ev) + sizeof(*ev_alloc); + ev->cpu = iter->cpu; + ev->timestamp = iter->ts; + ev->call_site = entry->call_site; + ev->ptr = (unsigned long)entry->ptr; ev_alloc = trace_seq_reserve(s, sizeof(*ev_alloc)); if (!ev_alloc) return TRACE_TYPE_PARTIAL_LINE; - ev_alloc->bytes_req = entry->bytes_req; - ev_alloc->bytes_alloc = entry->bytes_alloc; - ev_alloc->gfp_flags = entry->gfp_flags; - ev_alloc->node = entry->node; + + ev_alloc->bytes_req = entry->bytes_req; + ev_alloc->bytes_alloc = entry->bytes_alloc; + ev_alloc->gfp_flags = entry->gfp_flags; + ev_alloc->node = entry->node; return TRACE_TYPE_HANDLED; } @@ -272,13 +276,14 @@ kmemtrace_print_free_user(struct trace_iterator *iter, ev = trace_seq_reserve(s, sizeof(*ev)); if (!ev) return TRACE_TYPE_PARTIAL_LINE; - ev->event_id = KMEMTRACE_USER_FREE; - ev->type_id = entry->type_id; - ev->event_size = sizeof(*ev); - ev->cpu = iter->cpu; - ev->timestamp = iter->ts; - ev->call_site = entry->call_site; - ev->ptr = (unsigned long) entry->ptr; + + ev->event_id = KMEMTRACE_USER_FREE; + ev->type_id = entry->type_id; + ev->event_size = sizeof(*ev); + ev->cpu = iter->cpu; + ev->timestamp = iter->ts; + ev->call_site = entry->call_site; + ev->ptr = (unsigned long)entry->ptr; return TRACE_TYPE_HANDLED; } @@ -354,7 +359,7 @@ kmemtrace_print_alloc_compress(struct trace_iterator *iter, static enum print_line_t kmemtrace_print_free_compress(struct trace_iterator *iter, - struct kmemtrace_free_entry *entry) + struct kmemtrace_free_entry *entry) { struct trace_seq *s = &iter->seq; int ret; @@ -415,6 +420,7 @@ static enum print_line_t kmemtrace_print_line(struct trace_iterator *iter) switch (entry->type) { case TRACE_KMEM_ALLOC: { struct kmemtrace_alloc_entry *field; + trace_assign_type(field, entry); if (kmem_tracer_flags.val & TRACE_KMEM_OPT_MINIMAL) return kmemtrace_print_alloc_compress(iter, field); @@ -424,6 +430,7 @@ static enum print_line_t kmemtrace_print_line(struct trace_iterator *iter) case TRACE_KMEM_FREE: { struct kmemtrace_free_entry *field; + trace_assign_type(field, entry); if (kmem_tracer_flags.val & TRACE_KMEM_OPT_MINIMAL) return kmemtrace_print_free_compress(iter, field); @@ -437,12 +444,12 @@ static enum print_line_t kmemtrace_print_line(struct trace_iterator *iter) } static struct tracer kmem_tracer __read_mostly = { - .name = "kmemtrace", - .init = kmem_trace_init, - .reset = kmem_trace_reset, - .print_line = kmemtrace_print_line, - .print_header = kmemtrace_headers, - .flags = &kmem_tracer_flags + .name = "kmemtrace", + .init = kmem_trace_init, + .reset = kmem_trace_reset, + .print_line = kmemtrace_print_line, + .print_header = kmemtrace_headers, + .flags = &kmem_tracer_flags }; void kmemtrace_init(void) @@ -454,5 +461,4 @@ static int __init init_kmem_tracer(void) { return register_tracer(&kmem_tracer); } - device_initcall(init_kmem_tracer); |