diff options
| -rw-r--r-- | kernel/trace/trace.h | 13 | ||||
| -rw-r--r-- | kernel/trace/trace_ksym.c | 26 |
2 files changed, 22 insertions, 17 deletions
diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h index 7d5cc37b8fca..ff1ef411a176 100644 --- a/kernel/trace/trace.h +++ b/kernel/trace/trace.h | |||
| @@ -215,17 +215,12 @@ struct syscall_trace_exit { | |||
| 215 | #define KSYM_SELFTEST_ENTRY "ksym_selftest_dummy" | 215 | #define KSYM_SELFTEST_ENTRY "ksym_selftest_dummy" |
| 216 | extern int process_new_ksym_entry(char *ksymname, int op, unsigned long addr); | 216 | extern int process_new_ksym_entry(char *ksymname, int op, unsigned long addr); |
| 217 | 217 | ||
| 218 | struct trace_ksym { | 218 | struct ksym_trace_entry { |
| 219 | struct trace_entry ent; | 219 | struct trace_entry ent; |
| 220 | struct hw_breakpoint *ksym_hbp; | ||
| 221 | unsigned long ksym_addr; | ||
| 222 | unsigned long ip; | 220 | unsigned long ip; |
| 223 | #ifdef CONFIG_PROFILE_KSYM_TRACER | 221 | unsigned char type; |
| 224 | unsigned long counter; | ||
| 225 | #endif | ||
| 226 | struct hlist_node ksym_hlist; | ||
| 227 | char ksym_name[KSYM_NAME_LEN]; | 222 | char ksym_name[KSYM_NAME_LEN]; |
| 228 | char p_name[TASK_COMM_LEN]; | 223 | char cmd[TASK_COMM_LEN]; |
| 229 | }; | 224 | }; |
| 230 | 225 | ||
| 231 | /* | 226 | /* |
| @@ -343,7 +338,7 @@ extern void __ftrace_bad_type(void); | |||
| 343 | TRACE_SYSCALL_ENTER); \ | 338 | TRACE_SYSCALL_ENTER); \ |
| 344 | IF_ASSIGN(var, ent, struct syscall_trace_exit, \ | 339 | IF_ASSIGN(var, ent, struct syscall_trace_exit, \ |
| 345 | TRACE_SYSCALL_EXIT); \ | 340 | TRACE_SYSCALL_EXIT); \ |
| 346 | IF_ASSIGN(var, ent, struct trace_ksym, TRACE_KSYM); \ | 341 | IF_ASSIGN(var, ent, struct ksym_trace_entry, TRACE_KSYM);\ |
| 347 | __ftrace_bad_type(); \ | 342 | __ftrace_bad_type(); \ |
| 348 | } while (0) | 343 | } while (0) |
| 349 | 344 | ||
diff --git a/kernel/trace/trace_ksym.c b/kernel/trace/trace_ksym.c index eef97e7c8db7..085ff055fdfa 100644 --- a/kernel/trace/trace_ksym.c +++ b/kernel/trace/trace_ksym.c | |||
| @@ -37,6 +37,15 @@ | |||
| 37 | #define KSYM_TRACER_OP_LEN 3 /* rw- */ | 37 | #define KSYM_TRACER_OP_LEN 3 /* rw- */ |
| 38 | #define KSYM_FILTER_ENTRY_LEN (KSYM_NAME_LEN + KSYM_TRACER_OP_LEN + 1) | 38 | #define KSYM_FILTER_ENTRY_LEN (KSYM_NAME_LEN + KSYM_TRACER_OP_LEN + 1) |
| 39 | 39 | ||
| 40 | struct trace_ksym { | ||
| 41 | struct hw_breakpoint *ksym_hbp; | ||
| 42 | unsigned long ksym_addr; | ||
| 43 | #ifdef CONFIG_PROFILE_KSYM_TRACER | ||
| 44 | unsigned long counter; | ||
| 45 | #endif | ||
| 46 | struct hlist_node ksym_hlist; | ||
| 47 | }; | ||
| 48 | |||
| 40 | static struct trace_array *ksym_trace_array; | 49 | static struct trace_array *ksym_trace_array; |
| 41 | 50 | ||
| 42 | static unsigned int ksym_filter_entry_count; | 51 | static unsigned int ksym_filter_entry_count; |
| @@ -71,7 +80,7 @@ void ksym_hbp_handler(struct hw_breakpoint *hbp, struct pt_regs *regs) | |||
| 71 | { | 80 | { |
| 72 | struct ring_buffer_event *event; | 81 | struct ring_buffer_event *event; |
| 73 | struct trace_array *tr; | 82 | struct trace_array *tr; |
| 74 | struct trace_ksym *entry; | 83 | struct ksym_trace_entry *entry; |
| 75 | int pc; | 84 | int pc; |
| 76 | 85 | ||
| 77 | if (!ksym_tracing_enabled) | 86 | if (!ksym_tracing_enabled) |
| @@ -85,11 +94,12 @@ void ksym_hbp_handler(struct hw_breakpoint *hbp, struct pt_regs *regs) | |||
| 85 | if (!event) | 94 | if (!event) |
| 86 | return; | 95 | return; |
| 87 | 96 | ||
| 88 | entry = ring_buffer_event_data(event); | 97 | entry = ring_buffer_event_data(event); |
| 98 | entry->ip = instruction_pointer(regs); | ||
| 99 | entry->type = hbp->info.type; | ||
| 89 | strlcpy(entry->ksym_name, hbp->info.name, KSYM_SYMBOL_LEN); | 100 | strlcpy(entry->ksym_name, hbp->info.name, KSYM_SYMBOL_LEN); |
| 90 | entry->ksym_hbp = hbp; | 101 | strlcpy(entry->cmd, current->comm, TASK_COMM_LEN); |
| 91 | entry->ip = instruction_pointer(regs); | 102 | |
| 92 | strlcpy(entry->p_name, current->comm, TASK_COMM_LEN); | ||
| 93 | #ifdef CONFIG_PROFILE_KSYM_TRACER | 103 | #ifdef CONFIG_PROFILE_KSYM_TRACER |
| 94 | ksym_collect_stats(hbp->info.address); | 104 | ksym_collect_stats(hbp->info.address); |
| 95 | #endif /* CONFIG_PROFILE_KSYM_TRACER */ | 105 | #endif /* CONFIG_PROFILE_KSYM_TRACER */ |
| @@ -380,7 +390,7 @@ static enum print_line_t ksym_trace_output(struct trace_iterator *iter) | |||
| 380 | { | 390 | { |
| 381 | struct trace_entry *entry = iter->ent; | 391 | struct trace_entry *entry = iter->ent; |
| 382 | struct trace_seq *s = &iter->seq; | 392 | struct trace_seq *s = &iter->seq; |
| 383 | struct trace_ksym *field; | 393 | struct ksym_trace_entry *field; |
| 384 | char str[KSYM_SYMBOL_LEN]; | 394 | char str[KSYM_SYMBOL_LEN]; |
| 385 | int ret; | 395 | int ret; |
| 386 | 396 | ||
| @@ -389,12 +399,12 @@ static enum print_line_t ksym_trace_output(struct trace_iterator *iter) | |||
| 389 | 399 | ||
| 390 | trace_assign_type(field, entry); | 400 | trace_assign_type(field, entry); |
| 391 | 401 | ||
| 392 | ret = trace_seq_printf(s, "%-15s %-5d %-3d %-20s ", field->p_name, | 402 | ret = trace_seq_printf(s, "%-15s %-5d %-3d %-20s ", field->cmd, |
| 393 | entry->pid, iter->cpu, field->ksym_name); | 403 | entry->pid, iter->cpu, field->ksym_name); |
| 394 | if (!ret) | 404 | if (!ret) |
| 395 | return TRACE_TYPE_PARTIAL_LINE; | 405 | return TRACE_TYPE_PARTIAL_LINE; |
| 396 | 406 | ||
| 397 | switch (field->ksym_hbp->info.type) { | 407 | switch (field->type) { |
| 398 | case HW_BREAKPOINT_WRITE: | 408 | case HW_BREAKPOINT_WRITE: |
| 399 | ret = trace_seq_printf(s, " W "); | 409 | ret = trace_seq_printf(s, " W "); |
| 400 | break; | 410 | break; |
