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Date: Thu, 2 Apr 2015 11:42:30 -0700
From: tip-bot for Stephane Eranian <tipbot@...or.com>
To: linux-tip-commits@...r.kernel.org
Cc: hpa@...or.com, peterz@...radead.org, eranian@...gle.com,
mingo@...nel.org, tglx@...utronix.de, linux-kernel@...r.kernel.org
Subject: [tip:perf/core] perf/x86: Add 'index'
param to get_event_constraint() callback
Commit-ID: 79cba822443a168c8f7f5b853d9c7225a6d5415e
Gitweb: http://git.kernel.org/tip/79cba822443a168c8f7f5b853d9c7225a6d5415e
Author: Stephane Eranian <eranian@...gle.com>
AuthorDate: Mon, 17 Nov 2014 20:06:56 +0100
Committer: Ingo Molnar <mingo@...nel.org>
CommitDate: Thu, 2 Apr 2015 17:33:10 +0200
perf/x86: Add 'index' param to get_event_constraint() callback
This patch adds an index parameter to the get_event_constraint()
x86_pmu callback. It is expected to represent the index of the
event in the cpuc->event_list[] array. When the callback is used
for fake_cpuc (evnet validation), then the index must be -1. The
motivation for passing the index is to use it to index into another
cpuc array.
Signed-off-by: Stephane Eranian <eranian@...gle.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
Cc: bp@...en8.de
Cc: jolsa@...hat.com
Cc: kan.liang@...el.com
Cc: maria.n.dimakopoulou@...il.com
Link: http://lkml.kernel.org/r/1416251225-17721-5-git-send-email-eranian@google.com
Signed-off-by: Ingo Molnar <mingo@...nel.org>
---
arch/x86/kernel/cpu/perf_event.c | 4 ++--
arch/x86/kernel/cpu/perf_event.h | 4 +++-
arch/x86/kernel/cpu/perf_event_amd.c | 6 ++++--
arch/x86/kernel/cpu/perf_event_intel.c | 15 ++++++++++-----
4 files changed, 19 insertions(+), 10 deletions(-)
diff --git a/arch/x86/kernel/cpu/perf_event.c b/arch/x86/kernel/cpu/perf_event.c
index cd61158..7175540 100644
--- a/arch/x86/kernel/cpu/perf_event.c
+++ b/arch/x86/kernel/cpu/perf_event.c
@@ -789,7 +789,7 @@ int x86_schedule_events(struct cpu_hw_events *cpuc, int n, int *assign)
for (i = 0, wmin = X86_PMC_IDX_MAX, wmax = 0; i < n; i++) {
hwc = &cpuc->event_list[i]->hw;
- c = x86_pmu.get_event_constraints(cpuc, cpuc->event_list[i]);
+ c = x86_pmu.get_event_constraints(cpuc, i, cpuc->event_list[i]);
hwc->constraint = c;
wmin = min(wmin, c->weight);
@@ -1777,7 +1777,7 @@ static int validate_event(struct perf_event *event)
if (IS_ERR(fake_cpuc))
return PTR_ERR(fake_cpuc);
- c = x86_pmu.get_event_constraints(fake_cpuc, event);
+ c = x86_pmu.get_event_constraints(fake_cpuc, -1, event);
if (!c || !c->weight)
ret = -EINVAL;
diff --git a/arch/x86/kernel/cpu/perf_event.h b/arch/x86/kernel/cpu/perf_event.h
index ea27e63..24a6505 100644
--- a/arch/x86/kernel/cpu/perf_event.h
+++ b/arch/x86/kernel/cpu/perf_event.h
@@ -456,6 +456,7 @@ struct x86_pmu {
u64 max_period;
struct event_constraint *
(*get_event_constraints)(struct cpu_hw_events *cpuc,
+ int idx,
struct perf_event *event);
void (*put_event_constraints)(struct cpu_hw_events *cpuc,
@@ -751,7 +752,8 @@ static inline bool intel_pmu_has_bts(struct perf_event *event)
int intel_pmu_save_and_restart(struct perf_event *event);
struct event_constraint *
-x86_get_event_constraints(struct cpu_hw_events *cpuc, struct perf_event *event);
+x86_get_event_constraints(struct cpu_hw_events *cpuc, int idx,
+ struct perf_event *event);
struct intel_shared_regs *allocate_shared_regs(int cpu);
diff --git a/arch/x86/kernel/cpu/perf_event_amd.c b/arch/x86/kernel/cpu/perf_event_amd.c
index e4302b8..1cee5d2 100644
--- a/arch/x86/kernel/cpu/perf_event_amd.c
+++ b/arch/x86/kernel/cpu/perf_event_amd.c
@@ -430,7 +430,8 @@ static void amd_pmu_cpu_dead(int cpu)
}
static struct event_constraint *
-amd_get_event_constraints(struct cpu_hw_events *cpuc, struct perf_event *event)
+amd_get_event_constraints(struct cpu_hw_events *cpuc, int idx,
+ struct perf_event *event)
{
/*
* if not NB event or no NB, then no constraints
@@ -538,7 +539,8 @@ static struct event_constraint amd_f15_PMC50 = EVENT_CONSTRAINT(0, 0x3F, 0);
static struct event_constraint amd_f15_PMC53 = EVENT_CONSTRAINT(0, 0x38, 0);
static struct event_constraint *
-amd_get_event_constraints_f15h(struct cpu_hw_events *cpuc, struct perf_event *event)
+amd_get_event_constraints_f15h(struct cpu_hw_events *cpuc, int idx,
+ struct perf_event *event)
{
struct hw_perf_event *hwc = &event->hw;
unsigned int event_code = amd_get_event_code(hwc);
diff --git a/arch/x86/kernel/cpu/perf_event_intel.c b/arch/x86/kernel/cpu/perf_event_intel.c
index c0ed5a4..2dd34b5 100644
--- a/arch/x86/kernel/cpu/perf_event_intel.c
+++ b/arch/x86/kernel/cpu/perf_event_intel.c
@@ -1827,7 +1827,8 @@ intel_shared_regs_constraints(struct cpu_hw_events *cpuc,
}
struct event_constraint *
-x86_get_event_constraints(struct cpu_hw_events *cpuc, struct perf_event *event)
+x86_get_event_constraints(struct cpu_hw_events *cpuc, int idx,
+ struct perf_event *event)
{
struct event_constraint *c;
@@ -1844,7 +1845,8 @@ x86_get_event_constraints(struct cpu_hw_events *cpuc, struct perf_event *event)
}
static struct event_constraint *
-intel_get_event_constraints(struct cpu_hw_events *cpuc, struct perf_event *event)
+intel_get_event_constraints(struct cpu_hw_events *cpuc, int idx,
+ struct perf_event *event)
{
struct event_constraint *c;
@@ -1860,7 +1862,7 @@ intel_get_event_constraints(struct cpu_hw_events *cpuc, struct perf_event *event
if (c)
return c;
- return x86_get_event_constraints(cpuc, event);
+ return x86_get_event_constraints(cpuc, idx, event);
}
static void
@@ -2105,9 +2107,12 @@ static struct event_constraint counter2_constraint =
EVENT_CONSTRAINT(0, 0x4, 0);
static struct event_constraint *
-hsw_get_event_constraints(struct cpu_hw_events *cpuc, struct perf_event *event)
+hsw_get_event_constraints(struct cpu_hw_events *cpuc, int idx,
+ struct perf_event *event)
{
- struct event_constraint *c = intel_get_event_constraints(cpuc, event);
+ struct event_constraint *c;
+
+ c = intel_get_event_constraints(cpuc, idx, event);
/* Handle special quirk on in_tx_checkpointed only in counter 2 */
if (event->hw.config & HSW_IN_TX_CHECKPOINTED) {
--
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