From 0b413e44d64aeac36a096505a40fc2ff470872fa Mon Sep 17 00:00:00 2001 From: Tim Blechmann Date: Sun, 27 Dec 2009 14:43:06 +0100 Subject: 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 Cc: Peter Zijlstra Cc: Mike Galbraith Cc: Paul Mackerras Cc: Arnaldo Carvalho de Melo Cc: Frederic Weisbecker LKML-Reference: <4B37646A.90108@klingt.org> Signed-off-by: Ingo Molnar --- tools/perf/design.txt | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'tools/perf') diff --git a/tools/perf/design.txt b/tools/perf/design.txt index f000c30..8d0de51 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. -- cgit v1.1