Outputting formats of x86-tsc and counter should be a raw format, but after
applying the patch(2b6080f28c7cc3efc8625ab71495aae89aeb63a0), the format was
changed to nanosec. This is because the global variable trace_clock_id was used.
When we use multiple buffers, clock_id of each sub-buffer should be used. Then,
this patch uses tr->clock_id instead of the global variable trace_clock_id.
Signed-off-by: Yoshihiro YUNOMAE <yoshihiro.yunomae...@hitachi.com>
Cc: Steven Rostedt <rost...@goodmis.org>
Cc: Frederic Weisbecker <fweis...@gmail.com>
Cc: Ingo Molnar <mi...@redhat.com>
---
kernel/trace/trace.c | 8 +++-----
kernel/trace/trace.h | 2 --
2 files changed, 3 insertions(+), 7 deletions(-)
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 7297079..2ab9ccb 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -652,8 +652,6 @@ static struct {
ARCH_TRACE_CLOCKS
};
-int trace_clock_id;
-
/*
* trace_parser_get_init - gets the buffer for trace parser
*/
@@ -2815,7 +2813,7 @@ __tracing_open(struct inode *inode, struct file *file,
bool snapshot)
iter->iter_flags |= TRACE_FILE_ANNOTATE;
/* Output in nanoseconds only if we are using a clock in nanoseconds. */
- if (trace_clocks[trace_clock_id].in_ns)
+ if (trace_clocks[tr->clock_id].in_ns)
iter->iter_flags |= TRACE_FILE_TIME_IN_NS;
/* stop the trace while dumping if we are not opening "snapshot" */
@@ -3814,7 +3812,7 @@ static int tracing_open_pipe(struct inode *inode, struct
file *filp)
iter->iter_flags |= TRACE_FILE_LAT_FMT;
/* Output in nanoseconds only if we are using a clock in nanoseconds. */
- if (trace_clocks[trace_clock_id].in_ns)
+ if (trace_clocks[tr->clock_id].in_ns)
iter->iter_flags |= TRACE_FILE_TIME_IN_NS;
iter->cpu_file = tc->cpu;
@@ -5084,7 +5082,7 @@ tracing_stats_read(struct file *filp, char __user *ubuf,
cnt = ring_buffer_bytes_cpu(trace_buf->buffer, cpu);
trace_seq_printf(s, "bytes: %ld\n", cnt);
- if (trace_clocks[trace_clock_id].in_ns) {
+ if (trace_clocks[tr->clock_id].in_ns) {
/* local or global for trace_clock */
t = ns2usecs(ring_buffer_oldest_event_ts(trace_buf->buffer,
cpu));
usec_rem = do_div(t, USEC_PER_SEC);
diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h
index 9e01458..0ae9e8a 100644
--- a/kernel/trace/trace.h
+++ b/kernel/trace/trace.h
@@ -705,8 +705,6 @@ enum print_line_t print_trace_line(struct trace_iterator
*iter);
extern unsigned long trace_flags;
-extern int trace_clock_id;
-
/* Standard output formatting function used for function return traces */
#ifdef CONFIG_FUNCTION_GRAPH_TRACER
--
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