Re: [RFC][PATCH 1/3] tracing: Added hardware latency tracer
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: 2016-08-05 14:25:29
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lkml
* Steven Rostedt | 2016-08-04 10:57:09 [-0400]:
quoted hunk ↗ jump to hunk
diff --git a/kernel/trace/trace_hwlat.c b/kernel/trace/trace_hwlat.c new file mode 100644 index 000000000000..08dfabe4e862 --- /dev/null +++ b/kernel/trace/trace_hwlat.c
…
+/* Macros to encapsulate the time capturing infrastructure */ +#define time_type u64 +#define time_get() trace_clock_local() +#define time_to_us(x) div_u64(x, 1000) +#define time_sub(a, b) ((a) - (b)) +#define init_time(a, b) (a = b) +#define time_u64(a) a
Do we need a macro for this? In the old code we could choose between CONFIG_TRACING but now we don't. Sebastian