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mmiotrace: handle TRACE_PRINT entries

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Also make trace_seq_print_cont() non-static, and add a newline if the
seq buffer can't hold all data.

Signed-off-by: Pekka Paalanen <pq@iki.fi>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Pekka Paalanen
2008-09-16 22:02:27 +03:00
committed by Ingo Molnar
parent 9e57fb35d7
commit fc5e27ae4b
3 changed files with 53 additions and 20 deletions
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19
kernel/trace/trace.h
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@@ -71,6 +71,23 @@ struct print_entry {
char buf[];
};
/*
* trace_flag_type is an enumeration that holds different
* states when a trace occurs. These are:
* IRQS_OFF - interrupts were disabled
* NEED_RESCED - reschedule is requested
* HARDIRQ - inside an interrupt handler
* SOFTIRQ - inside a softirq handler
* CONT - multiple entries hold the trace item
*/
enum trace_flag_type {
TRACE_FLAG_IRQS_OFF = 0x01,
TRACE_FLAG_NEED_RESCHED = 0x02,
TRACE_FLAG_HARDIRQ = 0x04,
TRACE_FLAG_SOFTIRQ = 0x08,
TRACE_FLAG_CONT = 0x10,
};
/*
* The trace field - the most basic unit of tracing. This is what
* is printed in the end as a single line in the trace output, such as:
@@ -330,6 +347,8 @@ extern int trace_selftest_startup_sysprof(struct tracer *trace,
extern void *head_page(struct trace_array_cpu *data);
extern int trace_seq_printf(struct trace_seq *s, const char *fmt, ...);
extern void trace_seq_print_cont(struct trace_seq *s,
struct trace_iterator *iter);
extern ssize_t trace_seq_to_user(struct trace_seq *s, char __user *ubuf,
size_t cnt);
extern long ns2usecs(cycle_t nsec);