Robert Richter 6ae56b55bc oprofile/x86: protect cpu hotplug sections ... This patch reworks oprofile cpu hotplug code as follows: Introduce ctr_running variable to check, if counters are running or not. The state must be known for taking a cpu on or offline and when switching counters during counter multiplexing. Protect on_each_cpu() sections with get_online_cpus()/put_online_cpu() functions. This is necessary if notifiers or states are modified. Within these sections the cpu mask may not change. Switch only between counters in nmi_cpu_switch(), if counters are running. Otherwise the switch may restart a counter though they are disabled. Add nmi_cpu_setup() and nmi_cpu_shutdown() to cpu hotplug code. The function must also be called to avoid uninitialzed counter usage. Cc: Andi Kleen <andi@firstfloor.org> Signed-off-by: Robert Richter <robert.richter@amd.com>		2010-05-04 11:37:56 +02:00
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backtrace.c	perf events, x86/stacktrace: Make stack walking optional	2009-12-17 09:56:19 +01:00
init.c
Makefile	x86/oprofile: reanaming op_model_athlon.c to op_model_amd.c	2008-07-26 11:48:14 +02:00
nmi_int.c	oprofile/x86: protect cpu hotplug sections	2010-05-04 11:37:56 +02:00
nmi_timer_int.c
op_counter.h	oprofile: Implement performance counter multiplexing	2009-07-20 16:33:53 +02:00
op_model_amd.c	oprofile/x86: remove duplicate IBS capability check	2010-05-04 11:35:29 +02:00
op_model_p4.c	oprofile/x86: return -EBUSY if counters are already reserved	2010-05-04 11:35:28 +02:00
op_model_ppro.c	oprofile/x86: return -EBUSY if counters are already reserved	2010-05-04 11:35:28 +02:00
op_x86_model.h	oprofile/x86: return -EBUSY if counters are already reserved	2010-05-04 11:35:28 +02:00