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@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.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@redhat.com>

1 files changed, 8 insertions, 7 deletions

diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index f4399b2087c4..d3da1055239f 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);