diff options
Diffstat (limited to 'kernel/trace/trace_ksym.c')
-rw-r--r-- | kernel/trace/trace_ksym.c | 26 |
1 files changed, 18 insertions, 8 deletions
diff --git a/kernel/trace/trace_ksym.c b/kernel/trace/trace_ksym.c index eef97e7c8db..085ff055fdf 100644 --- a/kernel/trace/trace_ksym.c +++ b/kernel/trace/trace_ksym.c @@ -37,6 +37,15 @@ #define KSYM_TRACER_OP_LEN 3 /* rw- */ #define KSYM_FILTER_ENTRY_LEN (KSYM_NAME_LEN + KSYM_TRACER_OP_LEN + 1) +struct trace_ksym { + struct hw_breakpoint *ksym_hbp; + unsigned long ksym_addr; +#ifdef CONFIG_PROFILE_KSYM_TRACER + unsigned long counter; +#endif + struct hlist_node ksym_hlist; +}; + static struct trace_array *ksym_trace_array; static unsigned int ksym_filter_entry_count; @@ -71,7 +80,7 @@ void ksym_hbp_handler(struct hw_breakpoint *hbp, struct pt_regs *regs) { struct ring_buffer_event *event; struct trace_array *tr; - struct trace_ksym *entry; + struct ksym_trace_entry *entry; int pc; if (!ksym_tracing_enabled) @@ -85,11 +94,12 @@ void ksym_hbp_handler(struct hw_breakpoint *hbp, struct pt_regs *regs) if (!event) return; - entry = ring_buffer_event_data(event); + entry = ring_buffer_event_data(event); + entry->ip = instruction_pointer(regs); + entry->type = hbp->info.type; strlcpy(entry->ksym_name, hbp->info.name, KSYM_SYMBOL_LEN); - entry->ksym_hbp = hbp; - entry->ip = instruction_pointer(regs); - strlcpy(entry->p_name, current->comm, TASK_COMM_LEN); + strlcpy(entry->cmd, current->comm, TASK_COMM_LEN); + #ifdef CONFIG_PROFILE_KSYM_TRACER ksym_collect_stats(hbp->info.address); #endif /* CONFIG_PROFILE_KSYM_TRACER */ @@ -380,7 +390,7 @@ static enum print_line_t ksym_trace_output(struct trace_iterator *iter) { struct trace_entry *entry = iter->ent; struct trace_seq *s = &iter->seq; - struct trace_ksym *field; + struct ksym_trace_entry *field; char str[KSYM_SYMBOL_LEN]; int ret; @@ -389,12 +399,12 @@ static enum print_line_t ksym_trace_output(struct trace_iterator *iter) trace_assign_type(field, entry); - ret = trace_seq_printf(s, "%-15s %-5d %-3d %-20s ", field->p_name, + ret = trace_seq_printf(s, "%-15s %-5d %-3d %-20s ", field->cmd, entry->pid, iter->cpu, field->ksym_name); if (!ret) return TRACE_TYPE_PARTIAL_LINE; - switch (field->ksym_hbp->info.type) { + switch (field->type) { case HW_BREAKPOINT_WRITE: ret = trace_seq_printf(s, " W "); break; |