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| author | Henrik Rydberg <rydberg@euromail.se> | 2012-09-01 19:47:11 (GMT) |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.cz> | 2012-09-02 07:26:46 (GMT) |
| commit | 9bfc8da00b1e74f55a52cc06a0d364f1f7f61ed8 (patch) | |
| tree | 6643c6edd934129b20a58a2fe1361a461a02f237 /lib/percpu_counter.c | |
| parent | 67ddbb3e6568fb1820b2cc45b00c50702b114801 (diff) | |
| download | linux-9bfc8da00b1e74f55a52cc06a0d364f1f7f61ed8.tar.xz | |
HID: Only dump input if someone is listening
Going through the motions of printing the debug message information
takes a long time; using the keyboard can lead to a 160 us irqsoff
latency. This patch skips hid_dump_input() when there are no open
handles, which brings latency down to 100 us.
Signed-off-by: Henrik Rydberg <rydberg@euromail.se>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'lib/percpu_counter.c')
0 files changed, 0 insertions, 0 deletions