From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1762787Ab2KBNgm (ORCPT ); Fri, 2 Nov 2012 09:36:42 -0400 Received: from hrndva-omtalb.mail.rr.com ([71.74.56.122]:13170 "EHLO hrndva-omtalb.mail.rr.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1761348Ab2KBNfF (ORCPT ); Fri, 2 Nov 2012 09:35:05 -0400 X-Authority-Analysis: v=2.0 cv=NLdXCjGg c=1 sm=0 a=rXTBtCOcEpjy1lPqhTCpEQ==:17 a=mNMOxpOpBa8A:10 a=Ciwy3NGCPMMA:10 a=cEZLnVLY_d0A:10 a=5SG0PmZfjMsA:10 a=bbbx4UPp9XUA:10 a=meVymXHHAAAA:8 a=fsuvUruio_gA:10 a=3nbZYyFuAAAA:8 a=VwQbUJbxAAAA:8 a=1XWaLZrsAAAA:8 a=pGLkceISAAAA:8 a=Bn7xxrpYSftJHWeE3oYA:9 a=QEXdDO2ut3YA:10 a=lSinr4eg3GwA:10 a=EvKJbDF4Ut8A:10 a=UTB_XpHje0EA:10 a=MSl-tDqOz04A:10 a=jeBq3FmKZ4MA:10 a=Tx9Vf2JQ04_o3j1r65sA:9 a=rXTBtCOcEpjy1lPqhTCpEQ==:117 X-Cloudmark-Score: 0 X-Originating-IP: 74.67.115.198 Message-Id: <20121102133500.904920696@goodmis.org> User-Agent: quilt/0.60-1 Date: Fri, 02 Nov 2012 09:33:08 -0400 From: Steven Rostedt To: linux-kernel@vger.kernel.org Cc: Ingo Molnar , Andrew Morton , Frederic Weisbecker , Yoshihiro YUNOMAE , David Sharp Subject: [PATCH 16/22] tracing: Show raw time stamp on stats per cpu using counter or tsc mode for trace_clock References: <20121102133251.998500247@goodmis.org> Content-Disposition: inline; filename=0016-tracing-Show-raw-time-stamp-on-stats-per-cpu-using-c.patch Content-Type: multipart/signed; micalg="pgp-sha1"; protocol="application/pgp-signature"; boundary="00GvhwF7k39YY" Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --00GvhwF7k39YY Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable From: Yoshihiro YUNOMAE Show raw time stamp values for stats per cpu if you choose counter or tsc m= ode for trace_clock. Although a unit of tracing time stamp is nsec in local or = global mode, the units in counter and TSC mode are tracing counter and cycles respective= ly. Link: http://lkml.kernel.org/r/1349998076-15495-6-git-send-email-dhsharp@go= ogle.com Cc: Frederic Weisbecker Signed-off-by: Yoshihiro YUNOMAE Signed-off-by: David Sharp Signed-off-by: Steven Rostedt --- kernel/trace/trace.c | 23 +++++++++++++++++------ 1 file changed, 17 insertions(+), 6 deletions(-) diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index e0e7a8d..599b29a 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -4452,13 +4452,24 @@ tracing_stats_read(struct file *filp, char __user *= ubuf, cnt =3D ring_buffer_bytes_cpu(tr->buffer, cpu); trace_seq_printf(s, "bytes: %ld\n", cnt); =20 - t =3D ns2usecs(ring_buffer_oldest_event_ts(tr->buffer, cpu)); - usec_rem =3D do_div(t, USEC_PER_SEC); - trace_seq_printf(s, "oldest event ts: %5llu.%06lu\n", t, usec_rem); + if (trace_clocks[trace_clock_id].in_ns) { + /* local or global for trace_clock */ + t =3D ns2usecs(ring_buffer_oldest_event_ts(tr->buffer, cpu)); + usec_rem =3D do_div(t, USEC_PER_SEC); + trace_seq_printf(s, "oldest event ts: %5llu.%06lu\n", + t, usec_rem); + + t =3D ns2usecs(ring_buffer_time_stamp(tr->buffer, cpu)); + usec_rem =3D do_div(t, USEC_PER_SEC); + trace_seq_printf(s, "now ts: %5llu.%06lu\n", t, usec_rem); + } else { + /* counter or tsc mode for trace_clock */ + trace_seq_printf(s, "oldest event ts: %llu\n", + ring_buffer_oldest_event_ts(tr->buffer, cpu)); =20 - t =3D ns2usecs(ring_buffer_time_stamp(tr->buffer, cpu)); - usec_rem =3D do_div(t, USEC_PER_SEC); - trace_seq_printf(s, "now ts: %5llu.%06lu\n", t, usec_rem); + trace_seq_printf(s, "now ts: %llu\n", + ring_buffer_time_stamp(tr->buffer, cpu)); + } =20 cnt =3D ring_buffer_dropped_events_cpu(tr->buffer, cpu); trace_seq_printf(s, "dropped events: %ld\n", cnt); --=20 1.7.10.4 --00GvhwF7k39YY Content-Type: application/pgp-signature; name="signature.asc" Content-Description: This is a digitally signed message part -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAABAgAGBQJQk8wFAAoJEOdOSU1xswtMrJoH/RQ22Dq5tOOJX2WkZIIODhoV GpEVjvvNQYCKqlr/QZdVPRhJ+kHsxWN2u15u5HX2PzRIG/C0rMLqWGUwanm4TVRR d5qsNCs2mPKXjoy0/fYxWut8TkUjlrSE2+R4quF+PE8jEZ6dyj/2MaYOJb9YTPPL 6bJ0wmirPRL+NOvXcAsKxV9+gwdrEY8sYvQyzHLtojcJ1MOsAt14mBbLdmqakb/Y txKheo4/mgpXttxojNjwhcNc4uybeTXS/MPKYfQrX2y4yH8Czli3kiyGovCWwUKH gOAeG1ckwfVDmbaBKat7A0fc2nJEpeYzB3bdrSBfPhnHlj6ooFcwD1ah9ogP4GM= =p5Py -----END PGP SIGNATURE----- --00GvhwF7k39YY--