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Date: Fri, 11 Jun 2021 22:51:12 +0200
From: Rikard Falkeborn <rikard.falkeborn@...il.com>
To: Peter Zijlstra <peterz@...radead.org>
Cc: Ingo Molnar <mingo@...hat.com>,
Arnaldo Carvalho de Melo <acme@...nel.org>,
Mark Rutland <mark.rutland@....com>,
Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
Jiri Olsa <jolsa@...hat.com>,
Namhyung Kim <namhyung@...nel.org>,
Thomas Gleixner <tglx@...utronix.de>,
Borislav Petkov <bp@...en8.de>, x86@...nel.org,
"H. Peter Anvin" <hpa@...or.com>, linux-perf-users@...r.kernel.org,
linux-kernel@...r.kernel.org,
Kan Liang <kan.liang@...ux.intel.com>,
Alexander Antonov <alexander.antonov@...ux.intel.com>,
Rikard Falkeborn <rikard.falkeborn@...il.com>
Subject: [PATCH V2 4/4] perf/x86/intel/uncore: Constify unmodified static extra_reg structs
These are never modified, so make them const to allow the compiler to
put them in read-only memory.
Signed-off-by: Rikard Falkeborn <rikard.falkeborn@...il.com>
---
Changes since v1:
- None
arch/x86/events/intel/uncore_nhmex.c | 6 +++---
arch/x86/events/intel/uncore_snbep.c | 20 ++++++++++----------
2 files changed, 13 insertions(+), 13 deletions(-)
diff --git a/arch/x86/events/intel/uncore_nhmex.c b/arch/x86/events/intel/uncore_nhmex.c
index 5f7c27d7f428..b4567489580d 100644
--- a/arch/x86/events/intel/uncore_nhmex.c
+++ b/arch/x86/events/intel/uncore_nhmex.c
@@ -525,7 +525,7 @@ enum {
EXTRA_REG_NHMEX_M_ZDP_CTL_FVC,
};
-static struct extra_reg nhmex_uncore_mbox_extra_regs[] = {
+static const struct extra_reg nhmex_uncore_mbox_extra_regs[] = {
MBOX_INC_SEL_EXTAR_REG(0x0, DSP),
MBOX_INC_SEL_EXTAR_REG(0x4, MSC_THR),
MBOX_INC_SEL_EXTAR_REG(0x5, MSC_THR),
@@ -755,7 +755,7 @@ static void nhmex_mbox_put_constraint(struct intel_uncore_box *box, struct perf_
}
}
-static int nhmex_mbox_extra_reg_idx(struct extra_reg *er)
+static int nhmex_mbox_extra_reg_idx(const struct extra_reg *er)
{
if (er->idx < EXTRA_REG_NHMEX_M_ZDP_CTL_FVC)
return er->idx;
@@ -767,7 +767,7 @@ static int nhmex_mbox_hw_config(struct intel_uncore_box *box, struct perf_event
struct intel_uncore_type *type = box->pmu->type;
struct hw_perf_event_extra *reg1 = &event->hw.extra_reg;
struct hw_perf_event_extra *reg2 = &event->hw.branch_reg;
- struct extra_reg *er;
+ const struct extra_reg *er;
unsigned msr;
int reg_idx = 0;
/*
diff --git a/arch/x86/events/intel/uncore_snbep.c b/arch/x86/events/intel/uncore_snbep.c
index 507bb83e1463..77b342637688 100644
--- a/arch/x86/events/intel/uncore_snbep.c
+++ b/arch/x86/events/intel/uncore_snbep.c
@@ -882,7 +882,7 @@ static struct intel_uncore_type snbep_uncore_ubox = {
.format_group = &snbep_uncore_ubox_format_group,
};
-static struct extra_reg snbep_uncore_cbox_extra_regs[] = {
+static const struct extra_reg snbep_uncore_cbox_extra_regs[] = {
SNBEP_CBO_EVENT_EXTRA_REG(SNBEP_CBO_PMON_CTL_TID_EN,
SNBEP_CBO_PMON_CTL_TID_EN, 0x1),
SNBEP_CBO_EVENT_EXTRA_REG(0x0334, 0xffff, 0x4),
@@ -999,7 +999,7 @@ snbep_cbox_get_constraint(struct intel_uncore_box *box, struct perf_event *event
static int snbep_cbox_hw_config(struct intel_uncore_box *box, struct perf_event *event)
{
struct hw_perf_event_extra *reg1 = &event->hw.extra_reg;
- struct extra_reg *er;
+ const struct extra_reg *er;
int idx = 0;
for (er = snbep_uncore_cbox_extra_regs; er->msr; er++) {
@@ -1653,7 +1653,7 @@ static struct intel_uncore_type ivbep_uncore_ubox = {
.format_group = &ivbep_uncore_ubox_format_group,
};
-static struct extra_reg ivbep_uncore_cbox_extra_regs[] = {
+static const struct extra_reg ivbep_uncore_cbox_extra_regs[] = {
SNBEP_CBO_EVENT_EXTRA_REG(SNBEP_CBO_PMON_CTL_TID_EN,
SNBEP_CBO_PMON_CTL_TID_EN, 0x1),
SNBEP_CBO_EVENT_EXTRA_REG(0x1031, 0x10ff, 0x2),
@@ -1725,7 +1725,7 @@ ivbep_cbox_get_constraint(struct intel_uncore_box *box, struct perf_event *event
static int ivbep_cbox_hw_config(struct intel_uncore_box *box, struct perf_event *event)
{
struct hw_perf_event_extra *reg1 = &event->hw.extra_reg;
- struct extra_reg *er;
+ const struct extra_reg *er;
int idx = 0;
for (er = ivbep_uncore_cbox_extra_regs; er->msr; er++) {
@@ -2121,7 +2121,7 @@ static struct event_constraint knl_uncore_cha_constraints[] = {
EVENT_CONSTRAINT_END
};
-static struct extra_reg knl_uncore_cha_extra_regs[] = {
+static const struct extra_reg knl_uncore_cha_extra_regs[] = {
SNBEP_CBO_EVENT_EXTRA_REG(SNBEP_CBO_PMON_CTL_TID_EN,
SNBEP_CBO_PMON_CTL_TID_EN, 0x1),
SNBEP_CBO_EVENT_EXTRA_REG(0x3d, 0xff, 0x2),
@@ -2153,7 +2153,7 @@ static int knl_cha_hw_config(struct intel_uncore_box *box,
struct perf_event *event)
{
struct hw_perf_event_extra *reg1 = &event->hw.extra_reg;
- struct extra_reg *er;
+ const struct extra_reg *er;
int idx = 0;
for (er = knl_uncore_cha_extra_regs; er->msr; er++) {
@@ -2637,7 +2637,7 @@ static struct event_constraint hswep_uncore_cbox_constraints[] = {
EVENT_CONSTRAINT_END
};
-static struct extra_reg hswep_uncore_cbox_extra_regs[] = {
+static const struct extra_reg hswep_uncore_cbox_extra_regs[] = {
SNBEP_CBO_EVENT_EXTRA_REG(SNBEP_CBO_PMON_CTL_TID_EN,
SNBEP_CBO_PMON_CTL_TID_EN, 0x1),
SNBEP_CBO_EVENT_EXTRA_REG(0x0334, 0xffff, 0x4),
@@ -2708,7 +2708,7 @@ hswep_cbox_get_constraint(struct intel_uncore_box *box, struct perf_event *event
static int hswep_cbox_hw_config(struct intel_uncore_box *box, struct perf_event *event)
{
struct hw_perf_event_extra *reg1 = &event->hw.extra_reg;
- struct extra_reg *er;
+ const struct extra_reg *er;
int idx = 0;
for (er = hswep_uncore_cbox_extra_regs; er->msr; er++) {
@@ -3547,7 +3547,7 @@ static struct event_constraint skx_uncore_chabox_constraints[] = {
EVENT_CONSTRAINT_END
};
-static struct extra_reg skx_uncore_cha_extra_regs[] = {
+static const struct extra_reg skx_uncore_cha_extra_regs[] = {
SNBEP_CBO_EVENT_EXTRA_REG(0x0334, 0xffff, 0x4),
SNBEP_CBO_EVENT_EXTRA_REG(0x0534, 0xffff, 0x4),
SNBEP_CBO_EVENT_EXTRA_REG(0x0934, 0xffff, 0x4),
@@ -3593,7 +3593,7 @@ skx_cha_get_constraint(struct intel_uncore_box *box, struct perf_event *event)
static int skx_cha_hw_config(struct intel_uncore_box *box, struct perf_event *event)
{
struct hw_perf_event_extra *reg1 = &event->hw.extra_reg;
- struct extra_reg *er;
+ const struct extra_reg *er;
int idx = 0;
for (er = skx_uncore_cha_extra_regs; er->msr; er++) {
--
2.32.0
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