Commit-ID: 31d50c551e30923b86a1b5b420920dd1927fa63b
Gitweb: http://git.kernel.org/tip/31d50c551e30923b86a1b5b420920dd1927fa63b
Author: Peter Zijlstra <[email protected]>
AuthorDate: Mon, 4 Apr 2016 16:02:08 +0200
Committer: Ingo Molnar <[email protected]>
CommitDate: Wed, 13 Apr 2016 11:56:36 +0200
perf/x86/amd/uncore: Do not register a task ctx for uncore PMUs
The new sanity check introduced by:
26657848502b ("perf/core: Verify we have a single perf_hw_context PMU")
... triggered on the AMD uncore driver.
Uncore PMUs are per node, they cannot have per-task counters. Fix it.
Reported-by: Borislav Petkov <[email protected]>
Reported-by: Ingo Molnar <[email protected]>
Tested-by: Borislav Petkov <[email protected]>
Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Link:
http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>
---
arch/x86/events/amd/uncore.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/x86/events/amd/uncore.c b/arch/x86/events/amd/uncore.c
index 3db9569..98ac573 100644
--- a/arch/x86/events/amd/uncore.c
+++ b/arch/x86/events/amd/uncore.c
@@ -263,6 +263,7 @@ static const struct attribute_group
*amd_uncore_attr_groups[] = {
};
static struct pmu amd_nb_pmu = {
+ .task_ctx_nr = perf_invalid_context,
.attr_groups = amd_uncore_attr_groups,
.name = "amd_nb",
.event_init = amd_uncore_event_init,
@@ -274,6 +275,7 @@ static struct pmu amd_nb_pmu = {
};
static struct pmu amd_l2_pmu = {
+ .task_ctx_nr = perf_invalid_context,
.attr_groups = amd_uncore_attr_groups,
.name = "amd_l2",
.event_init = amd_uncore_event_init,
