path: root/tools/perf/design.txt
diff options
authorTim Blechmann <tim@klingt.org>2009-12-27 14:43:06 +0100
committerIngo Molnar <mingo@elte.hu>2009-12-28 09:14:37 +0100
commit0b413e44d64aeac36a096505a40fc2ff470872fa (patch)
tree00a29e51f44b5fe20b379e7b758ce154e4a424a5 /tools/perf/design.txt
parent049ae80b8790bd3c150d78e3351dcc491e9f2416 (diff)
perf: Rename perf_event_hw_event in design document
perf_event_hw_event has been renamed to perf_event_attr. The design document was still using the old name, though. Signed-off-by: Tim Blechmann <tim@klingt.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <4B37646A.90108@klingt.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'tools/perf/design.txt')
1 files changed, 4 insertions, 4 deletions
diff --git a/tools/perf/design.txt b/tools/perf/design.txt
index f000c30877a..8d0de5130db 100644
--- a/tools/perf/design.txt
+++ b/tools/perf/design.txt
@@ -21,7 +21,7 @@ There's one file descriptor per virtual counter used.
The special file descriptor is opened via the perf_event_open()
system call:
- int sys_perf_event_open(struct perf_event_hw_event *hw_event_uptr,
+ int sys_perf_event_open(struct perf_event_attr *hw_event_uptr,
pid_t pid, int cpu, int group_fd,
unsigned long flags);
@@ -32,9 +32,9 @@ can be used to set the blocking mode, etc.
Multiple counters can be kept open at a time, and the counters
can be poll()ed.
-When creating a new counter fd, 'perf_event_hw_event' is:
+When creating a new counter fd, 'perf_event_attr' is:
-struct perf_event_hw_event {
+struct perf_event_attr {
* The MSB of the config word signifies if the rest contains cpu
* specific (raw) counter configuration data, if unset, the next
@@ -399,7 +399,7 @@ Notification of new events is possible through poll()/select()/epoll() and
fcntl() managing signals.
Normally a notification is generated for every page filled, however one can
-additionally set perf_event_hw_event.wakeup_events to generate one every
+additionally set perf_event_attr.wakeup_events to generate one every
so many counter overflow events.
Future work will include a splice() interface to the ring-buffer.