OpenCloudOS-Kernel/samples
Avi Kivity 4dc0da8696 perf: Add context field to perf_event
The perf_event overflow handler does not receive any caller-derived
argument, so many callers need to resort to looking up the perf_event
in their local data structure.  This is ugly and doesn't scale if a
single callback services many perf_events.

Fix by adding a context parameter to perf_event_create_kernel_counter()
(and derived hardware breakpoints APIs) and storing it in the perf_event.
The field can be accessed from the callback as event->overflow_handler_context.
All callers are updated.

Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1309362157-6596-2-git-send-email-avi@redhat.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-07-01 11:06:38 +02:00
..
hidraw HID: hid-example: fix some build issues 2011-04-21 11:10:42 +02:00
hw_breakpoint perf: Add context field to perf_event 2011-07-01 11:06:38 +02:00
kdb kdb: Add kdb kernel module sample 2010-10-29 13:14:39 -05:00
kfifo Merge branch 'llseek' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl 2010-10-22 10:52:56 -07:00
kobject include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
kprobes SAMPLES: kprobe_example: Make it print something on MIPS. 2010-08-05 13:26:29 +01:00
trace_events debugfs: Change debuhgfs directory of trace-events-sample.h 2009-09-15 09:50:48 -07:00
tracepoints llseek: automatically add .llseek fop 2010-10-15 15:53:27 +02:00
Kconfig Merge branches 'doc', 'multitouch', 'upstream' and 'upstream-fixes' into for-linus 2011-05-23 12:49:25 +02:00
Makefile HID: Documentation for hidraw 2011-03-22 11:43:50 +01:00