linux-kernel - [tip:perf/core] perf session: Add ability to skip 4GiB or more

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Message-ID: <tip-d5652d865ea734a13a16cf563937291a84d4364d@git.kernel.org>
Date:	Mon, 28 Jul 2014 01:24:54 -0700
From:	tip-bot for Adrian Hunter <tipbot@...or.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	acme@...hat.com, linux-kernel@...r.kernel.org, eranian@...gle.com,
	paulus@...ba.org, hpa@...or.com, mingo@...nel.org,
	peterz@...radead.org, namhyung@...il.com, jolsa@...hat.com,
	fweisbec@...il.com, adrian.hunter@...el.com, dsahern@...il.com,
	tglx@...utronix.de
Subject: [tip:perf/core] perf session: Add ability to skip 4GiB or more

Commit-ID:  d5652d865ea734a13a16cf563937291a84d4364d
Gitweb:     http://git.kernel.org/tip/d5652d865ea734a13a16cf563937291a84d4364d
Author:     Adrian Hunter <adrian.hunter@...el.com>
AuthorDate: Wed, 23 Jul 2014 22:19:58 +0300
Committer:  Arnaldo Carvalho de Melo <acme@...hat.com>
CommitDate: Wed, 23 Jul 2014 17:07:14 -0300

perf session: Add ability to skip 4GiB or more

A session can be made to skip portions of the input file.  Do not limit
that size to 32-bits.

Signed-off-by: Adrian Hunter <adrian.hunter@...el.com>
Cc: David Ahern <dsahern@...il.com>
Cc: Frederic Weisbecker <fweisbec@...il.com>
Cc: Jiri Olsa <jolsa@...hat.com>
Cc: Namhyung Kim <namhyung@...il.com>
Cc: Paul Mackerras <paulus@...ba.org>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Stephane Eranian <eranian@...gle.com>
Link: http://lkml.kernel.org/r/1406143198-20732-2-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/perf/util/session.c | 15 ++++++++-------
 1 file changed, 8 insertions(+), 7 deletions(-)

diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index f4399b2..d3da105 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -994,8 +994,10 @@ static int perf_session_deliver_event(struct perf_session *session,
 	}
 }
 
-static int perf_session__process_user_event(struct perf_session *session, union perf_event *event,
-					    struct perf_tool *tool, u64 file_offset)
+static s64 perf_session__process_user_event(struct perf_session *session,
+					    union perf_event *event,
+					    struct perf_tool *tool,
+					    u64 file_offset)
 {
 	int fd = perf_data_file__fd(session->file);
 	int err;
@@ -1037,7 +1039,7 @@ static void event_swap(union perf_event *event, bool sample_id_all)
 		swap(event, sample_id_all);
 }
 
-static int perf_session__process_event(struct perf_session *session,
+static s64 perf_session__process_event(struct perf_session *session,
 				       union perf_event *event,
 				       struct perf_tool *tool,
 				       u64 file_offset)
@@ -1148,7 +1150,7 @@ static int __perf_session__process_pipe_events(struct perf_session *session,
 	union perf_event *event;
 	uint32_t size, cur_size = 0;
 	void *buf = NULL;
-	int skip = 0;
+	s64 skip = 0;
 	u64 head;
 	ssize_t err;
 	void *p;
@@ -1277,14 +1279,13 @@ int __perf_session__process_events(struct perf_session *session,
 				   u64 file_size, struct perf_tool *tool)
 {
 	int fd = perf_data_file__fd(session->file);
-	u64 head, page_offset, file_offset, file_pos;
+	u64 head, page_offset, file_offset, file_pos, size;
 	int err, mmap_prot, mmap_flags, map_idx = 0;
 	size_t	mmap_size;
 	char *buf, *mmaps[NUM_MMAPS];
 	union perf_event *event;
-	uint32_t size;
 	struct ui_progress prog;
-	int skip;
+	s64 skip;
 
 	perf_tool__fill_defaults(tool);
 
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