linux-kernel - Re: [PATCH 15/16] perf record: Add clockid parameter

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Date:	Tue, 07 Apr 2015 13:06:31 -0600
From:	David Ahern <dsahern@...il.com>
To:	Arnaldo Carvalho de Melo <acme@...nel.org>,
	Ingo Molnar <mingo@...nel.org>
CC:	linux-kernel@...r.kernel.org,
	Peter Zijlstra <peterz@...radead.org>,
	"H. Peter Anvin" <hpa@...or.com>,
	Adrian Hunter <adrian.hunter@...el.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Jiri Olsa <jolsa@...hat.com>,
	John Stultz <john.stultz@...aro.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Stephane Eranian <eranian@...gle.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Arnaldo Carvalho de Melo <acme@...hat.com>
Subject: Re: [PATCH 15/16] perf record: Add clockid parameter

fails to compile on RHEL6/CentOS6/OL6 ...

On 4/7/15 10:41 AM, Arnaldo Carvalho de Melo wrote:
> +/*
> + * Doesn't appear to have made it into userspace so define here if missing.
> + */
> +#ifndef CLOCK_TAI
> +#define CLOCK_TAI 11
> +#endif
> +
> +static const struct clockid_map clockids[] = {
> +	/* available for all events, NMI safe */
> +	CLOCKID_MAP("monotonic", CLOCK_MONOTONIC),
> +	CLOCKID_MAP("monotonic_raw", CLOCK_MONOTONIC_RAW),
> +
> +	/* available for some events */
> +	CLOCKID_MAP("realtime", CLOCK_REALTIME),
> +	CLOCKID_MAP("boottime", CLOCK_BOOTTIME),
> +	CLOCKID_MAP("tai", CLOCK_TAI),
> +
> +	/* available for the lazy */
> +	CLOCKID_MAP("mono", CLOCK_MONOTONIC),
> +	CLOCKID_MAP("raw", CLOCK_MONOTONIC_RAW),
> +	CLOCKID_MAP("real", CLOCK_REALTIME),
> +	CLOCKID_MAP("boot", CLOCK_BOOTTIME),
> +

builtin-record.c:738: error: ‘CLOCK_BOOTTIME’ undeclared here (not in a 
function)
make[2]: *** [/tmp/perf/builtin-record.o] Error 1
make[1]: *** [/tmp/perf/perf-in.o] Error 2
make: *** [all] Error 2

Need this similar to CLOCK_TAI:

diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index f32edba4f84a..dbf1d508a1c0 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -728,6 +728,10 @@ struct clockid_map {
  #define CLOCK_TAI 11
  #endif

+#ifndef CLOCK_BOOTTIME
+#define CLOCK_BOOTTIME 7
+#endif
+
  static const struct clockid_map clockids[] = {
     /* available for all events, NMI safe */
     CLOCKID_MAP("monotonic", CLOCK_MONOTONIC),

It would be best to add this delta before Ingo pulls it in to maintain 
git-bisect.

David
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