[PATCH 1/1] Change IBS PMU to use perf_hw_context

[suravee.suthikulpanit]

From: Suravee Suthikulpanit <suravee.suthikulpanit@xxxxxxx>

Currently, the AMD IBS PMU initialize pmu.task_ctx_nr to perf_invalid_context
which only allows IBS to be running only in system-wide mode (e.g. perf record -a).
IBS hardware is available in each core and should be per-context.  
This patch modifies the task_ctx_nr to use the perf_hw_context (default) instead.

Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@xxxxxxx>

diff --git a/arch/x86/kernel/cpu/perf_event_amd_ibs.c b/arch/x86/kernel/cpu/perf_event_amd_ibs.c
index 6336bcb..08fa71a 100644
--- a/arch/x86/kernel/cpu/perf_event_amd_ibs.c
+++ b/arch/x86/kernel/cpu/perf_event_amd_ibs.c
@@ -466,8 +466,6 @@ static struct attribute *ibs_op_format_attrs[] = {
 
 static struct perf_ibs perf_ibs_fetch = {
 	.pmu = {
-		.task_ctx_nr	= perf_invalid_context,
-
 		.event_init	= perf_ibs_init,
 		.add		= perf_ibs_add,
 		.del		= perf_ibs_del,
@@ -490,8 +488,6 @@ static struct perf_ibs perf_ibs_fetch = {
 
 static struct perf_ibs perf_ibs_op = {
 	.pmu = {
-		.task_ctx_nr	= perf_invalid_context,
-
 		.event_init	= perf_ibs_init,
 		.add		= perf_ibs_add,
 		.del		= perf_ibs_del,
-- 
1.7.10.4


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