[tip:perf/core] perf intel-pt: Re-factor TIP cases in intel_pt_walk_to_ip

[tip-bot for Adrian Hunter]

Commit-ID:  f3c98c4b5ac831f29b1cc19fa84d3c8401f846d6
Gitweb:     https://git.kernel.org/tip/f3c98c4b5ac831f29b1cc19fa84d3c8401f846d6
Author:     Adrian Hunter <adrian.hunter@xxxxxxxxx>
AuthorDate: Mon, 20 May 2019 14:37:16 +0300
Committer:  Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Wed, 5 Jun 2019 09:47:56 -0300

perf intel-pt: Re-factor TIP cases in intel_pt_walk_to_ip

To make it easier to add new code for different TIP cases, separate each
case.

Signed-off-by: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Link: http://lkml.kernel.org/r/20190520113728.14389-11-adrian.hunter@xxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
 .../perf/util/intel-pt-decoder/intel-pt-decoder.c  | 23 ++++++++++++++++------
 1 file changed, 17 insertions(+), 6 deletions(-)

diff --git a/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c b/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c
index a2384a314990..99773445872d 100644
--- a/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c
+++ b/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c
@@ -2128,18 +2128,29 @@ static int intel_pt_walk_to_ip(struct intel_pt_decoder *decoder)
 		switch (decoder->packet.type) {
 		case INTEL_PT_TIP_PGD:
 			decoder->continuous_period = false;
-			__fallthrough;
+			decoder->pge = false;
+			if (intel_pt_have_ip(decoder))
+				intel_pt_set_ip(decoder);
+			if (!decoder->ip)
+				break;
+			decoder->state.type |= INTEL_PT_TRACE_END;
+			return 0;
+
 		case INTEL_PT_TIP_PGE:
+			decoder->pge = true;
+			if (intel_pt_have_ip(decoder))
+				intel_pt_set_ip(decoder);
+			if (!decoder->ip)
+				break;
+			decoder->state.type |= INTEL_PT_TRACE_BEGIN;
+			return 0;
+
 		case INTEL_PT_TIP:
-			decoder->pge = decoder->packet.type != INTEL_PT_TIP_PGD;
+			decoder->pge = true;
 			if (intel_pt_have_ip(decoder))
 				intel_pt_set_ip(decoder);
 			if (!decoder->ip)
 				break;
-			if (decoder->packet.type == INTEL_PT_TIP_PGE)
-				decoder->state.type |= INTEL_PT_TRACE_BEGIN;
-			if (decoder->packet.type == INTEL_PT_TIP_PGD)
-				decoder->state.type |= INTEL_PT_TRACE_END;
 			return 0;
 
 		case INTEL_PT_FUP: