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author | Takashi Iwai <tiwai@suse.de> | 2010-01-12 09:40:48 +0100 |
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committer | Takashi Iwai <tiwai@suse.de> | 2010-01-12 09:40:48 +0100 |
commit | dba9532388b00d591d87c638a47dcc7ba3763fc5 (patch) | |
tree | cc9de8cbc40d0e927b1924d1d943208e84e21d1f /tools/perf/design.txt | |
parent | 78b8d5d2ee280c463908fd75f3bdf246bcb6ac8d (diff) | |
parent | c68db7175f4dcb3d5789bb50bea6376fb81f87fe (diff) | |
download | op-kernel-dev-dba9532388b00d591d87c638a47dcc7ba3763fc5.zip op-kernel-dev-dba9532388b00d591d87c638a47dcc7ba3763fc5.tar.gz |
Merge remote branch 'alsa/fixes' into fix/misc
Diffstat (limited to 'tools/perf/design.txt')
-rw-r--r-- | tools/perf/design.txt | 8 |
1 files changed, 4 insertions, 4 deletions
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. |