| commit | b9cacc7bf193df16532bfa7d7ca77fe50fc3c2e6 | |
| author | Peter Zijlstra <a.p.zijlstra@chello.nl> | |
| Wed, 25 Mar 2009 11:30:22 +0000 (25 12:30 +0100) | ||
| committer | Ingo Molnar <mingo@elte.hu> | |
| Mon, 6 Apr 2009 07:30:32 +0000 (6 09:30 +0200) | ||
| tree | 4a8e4df2506876fe28e18c1e7b6e3ff21d0a9c6a | treesnapshot (tar.gz zip) |
| parent | c7138f37f905bb7987b1f9f5a8ee73667db39f25 | commitdiff |
perf_counter: more elaborate write API
Provide a begin, copy, end interface to the output buffer.
begin() reserves the space,
copy() copies the data over, considering page boundaries,
end() finalizes the event and does the wakeup.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Arjan van de Ven <arjan@infradead.org>
Cc: Wu Fengguang <fengguang.wu@intel.com>
Orig-LKML-Reference: <20090325113316.740550870@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Provide a begin, copy, end interface to the output buffer.
begin() reserves the space,
copy() copies the data over, considering page boundaries,
end() finalizes the event and does the wakeup.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Arjan van de Ven <arjan@infradead.org>
Cc: Wu Fengguang <fengguang.wu@intel.com>
Orig-LKML-Reference: <20090325113316.740550870@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
| kernel/perf_counter.c | diffblobblamehistory |