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Subject[GIT PULL] cpupower update for Linux 5.12-rc1
Date
Hi Rafael,

Please pull the following cpupower update for Linux 5.12-rc1

This cpupower update for Linux 5.12-rc1 consists of:

- Updates to the cpupower command to add support for AMD family 0x19
and cleanup the code to remove many of the family checks to make
future family updates easier.

- Adding Makefile dependencies for install targets to allow building
cpupower in parallel rather than serially.

diff is attached.

thanks,
-- Shuah

----------------------------------------------------------------
The following changes since commit e71ba9452f0b5b2e8dc8aa5445198cd9214a6a62:

Linux 5.11-rc2 (2021-01-03 15:55:30 -0800)

are available in the Git repository at:

git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux
tags/linux-cpupower-5.12-rc1

for you to fetch changes up to 3a3ecfdb605cc8d98988012a4f88c34b4d220c21:

cpupower: Add cpuid cap flag for MSR_AMD_HWCR support (2021-01-26
09:40:45 -0700)

----------------------------------------------------------------
linux-cpupower-5.12-rc1

This cpupower update for Linux 5.12-rc1 consists of:

- Updates to the cpupower command to add support for AMD family 0x19
and cleanup the code to remove many of the family checks to make
future family updates easier.

- Adding Makefile dependencies for install targets to allow building
cpupower in parallel rather than serially.

----------------------------------------------------------------
Ivan Babrou (1):
cpupower: add Makefile dependencies for install targets

Nathan Fontenot (7):
cpupower: Update msr_pstate union struct naming
cpupower: Add CPUPOWER_CAP_AMD_HW_PSTATE cpuid caps flag
cpupower: Remove unused pscur variable.
cpupower: Update family checks when decoding HW pstates
cpupower: Condense pstate enabled bit checks in decode_pstates()
cpupower: Remove family arg to decode_pstates()
cpupower: Add cpuid cap flag for MSR_AMD_HWCR support

Robert Richter (1):
cpupower: Correct macro name for CPB caps flag

tools/power/cpupower/Makefile | 8 ++--
tools/power/cpupower/bench/Makefile | 2 +-
tools/power/cpupower/utils/cpufreq-info.c | 3 +-
tools/power/cpupower/utils/helpers/amd.c | 65
+++++++++++++---------------
tools/power/cpupower/utils/helpers/cpuid.c | 20 +++++++--
tools/power/cpupower/utils/helpers/helpers.h | 14 +++---
tools/power/cpupower/utils/helpers/misc.c | 9 +---
7 files changed, 62 insertions(+), 59 deletions(-)

----------------------------------------------------------------
diff --git a/tools/power/cpupower/Makefile b/tools/power/cpupower/Makefile
index c7bcddbd486d..3b1594447f29 100644
--- a/tools/power/cpupower/Makefile
+++ b/tools/power/cpupower/Makefile
@@ -270,14 +270,14 @@ clean:
$(MAKE) -C bench O=$(OUTPUT) clean


-install-lib:
+install-lib: libcpupower
$(INSTALL) -d $(DESTDIR)${libdir}
$(CP) $(OUTPUT)libcpupower.so* $(DESTDIR)${libdir}/
$(INSTALL) -d $(DESTDIR)${includedir}
$(INSTALL_DATA) lib/cpufreq.h $(DESTDIR)${includedir}/cpufreq.h
$(INSTALL_DATA) lib/cpuidle.h $(DESTDIR)${includedir}/cpuidle.h

-install-tools:
+install-tools: $(OUTPUT)cpupower
$(INSTALL) -d $(DESTDIR)${bindir}
$(INSTALL_PROGRAM) $(OUTPUT)cpupower $(DESTDIR)${bindir}
$(INSTALL) -d $(DESTDIR)${bash_completion_dir}
@@ -293,14 +293,14 @@ install-man:
$(INSTALL_DATA) -D man/cpupower-info.1 $(DESTDIR)${mandir}/man1/cpupower-info.1
$(INSTALL_DATA) -D man/cpupower-monitor.1 $(DESTDIR)${mandir}/man1/cpupower-monitor.1

-install-gmo:
+install-gmo: create-gmo
$(INSTALL) -d $(DESTDIR)${localedir}
for HLANG in $(LANGUAGES); do \
echo '$(INSTALL_DATA) -D $(OUTPUT)po/$$HLANG.gmo $(DESTDIR)${localedir}/$$HLANG/LC_MESSAGES/cpupower.mo'; \
$(INSTALL_DATA) -D $(OUTPUT)po/$$HLANG.gmo $(DESTDIR)${localedir}/$$HLANG/LC_MESSAGES/cpupower.mo; \
done;

-install-bench:
+install-bench: compile-bench
@#DESTDIR must be set from outside to survive
@sbindir=$(sbindir) bindir=$(bindir) docdir=$(docdir) confdir=$(confdir) $(MAKE) -C bench O=$(OUTPUT) install

diff --git a/tools/power/cpupower/bench/Makefile b/tools/power/cpupower/bench/Makefile
index f68b4bc55273..d9d9923af85c 100644
--- a/tools/power/cpupower/bench/Makefile
+++ b/tools/power/cpupower/bench/Makefile
@@ -27,7 +27,7 @@ $(OUTPUT)cpufreq-bench: $(OBJS)

all: $(OUTPUT)cpufreq-bench

-install:
+install: $(OUTPUT)cpufreq-bench
mkdir -p $(DESTDIR)/$(sbindir)
mkdir -p $(DESTDIR)/$(bindir)
mkdir -p $(DESTDIR)/$(docdir)
diff --git a/tools/power/cpupower/utils/cpufreq-info.c b/tools/power/cpupower/utils/cpufreq-info.c
index 6efc0f6b1b11..f9895e31ff5a 100644
--- a/tools/power/cpupower/utils/cpufreq-info.c
+++ b/tools/power/cpupower/utils/cpufreq-info.c
@@ -186,8 +186,7 @@ static int get_boost_mode_x86(unsigned int cpu)
if ((cpupower_cpu_info.vendor == X86_VENDOR_AMD &&
cpupower_cpu_info.family >= 0x10) ||
cpupower_cpu_info.vendor == X86_VENDOR_HYGON) {
- ret = decode_pstates(cpu, cpupower_cpu_info.family, b_states,
- pstates, &pstate_no);
+ ret = decode_pstates(cpu, b_states, pstates, &pstate_no);
if (ret)
return ret;

diff --git a/tools/power/cpupower/utils/helpers/amd.c b/tools/power/cpupower/utils/helpers/amd.c
index 7c4f83a8c973..97f2c857048e 100644
--- a/tools/power/cpupower/utils/helpers/amd.c
+++ b/tools/power/cpupower/utils/helpers/amd.c
@@ -13,7 +13,8 @@
#define MSR_AMD_PSTATE 0xc0010064
#define MSR_AMD_PSTATE_LIMIT 0xc0010061

-union msr_pstate {
+union core_pstate {
+ /* pre fam 17h: */
struct {
unsigned fid:6;
unsigned did:3;
@@ -26,7 +27,8 @@ union msr_pstate {
unsigned idddiv:2;
unsigned res3:21;
unsigned en:1;
- } bits;
+ } pstate;
+ /* since fam 17h: */
struct {
unsigned fid:8;
unsigned did:6;
@@ -35,37 +37,37 @@ union msr_pstate {
unsigned idddiv:2;
unsigned res1:31;
unsigned en:1;
- } fam17h_bits;
+ } pstatedef;
unsigned long long val;
};

-static int get_did(int family, union msr_pstate pstate)
+static int get_did(union core_pstate pstate)
{
int t;

- if (family == 0x12)
+ if (cpupower_cpu_info.caps & CPUPOWER_CAP_AMD_PSTATEDEF)
+ t = pstate.pstatedef.did;
+ else if (cpupower_cpu_info.family == 0x12)
t = pstate.val & 0xf;
- else if (family == 0x17 || family == 0x18)
- t = pstate.fam17h_bits.did;
else
- t = pstate.bits.did;
+ t = pstate.pstate.did;

return t;
}

-static int get_cof(int family, union msr_pstate pstate)
+static int get_cof(union core_pstate pstate)
{
int t;
int fid, did, cof;

- did = get_did(family, pstate);
- if (family == 0x17 || family == 0x18) {
- fid = pstate.fam17h_bits.fid;
+ did = get_did(pstate);
+ if (cpupower_cpu_info.caps & CPUPOWER_CAP_AMD_PSTATEDEF) {
+ fid = pstate.pstatedef.fid;
cof = 200 * fid / did;
} else {
t = 0x10;
- fid = pstate.bits.fid;
- if (family == 0x11)
+ fid = pstate.pstate.fid;
+ if (cpupower_cpu_info.family == 0x11)
t = 0x8;
cof = (100 * (fid + t)) >> did;
}
@@ -74,8 +76,7 @@ static int get_cof(int family, union msr_pstate pstate)

/* Needs:
* cpu -> the cpu that gets evaluated
- * cpu_family -> The cpu's family (0x10, 0x12,...)
- * boots_states -> how much boost states the machines support
+ * boost_states -> how much boost states the machines support
*
* Fills up:
* pstates -> a pointer to an array of size MAX_HW_PSTATES
@@ -85,31 +86,23 @@ static int get_cof(int family, union msr_pstate pstate)
*
* returns zero on success, -1 on failure
*/
-int decode_pstates(unsigned int cpu, unsigned int cpu_family,
- int boost_states, unsigned long *pstates, int *no)
+int decode_pstates(unsigned int cpu, int boost_states,
+ unsigned long *pstates, int *no)
{
- int i, psmax, pscur;
- union msr_pstate pstate;
+ int i, psmax;
+ union core_pstate pstate;
unsigned long long val;

- /* Only read out frequencies from HW when CPU might be boostable
- to keep the code as short and clean as possible.
- Otherwise frequencies are exported via ACPI tables.
- */
- if (cpu_family < 0x10 || cpu_family == 0x14)
+ /* Only read out frequencies from HW if HW Pstate is supported,
+ * otherwise frequencies are exported via ACPI tables.
+ */
+ if (!(cpupower_cpu_info.caps & CPUPOWER_CAP_AMD_HW_PSTATE))
return -1;

if (read_msr(cpu, MSR_AMD_PSTATE_LIMIT, &val))
return -1;

psmax = (val >> 4) & 0x7;
-
- if (read_msr(cpu, MSR_AMD_PSTATE_STATUS, &val))
- return -1;
-
- pscur = val & 0x7;
-
- pscur += boost_states;
psmax += boost_states;
for (i = 0; i <= psmax; i++) {
if (i >= MAX_HW_PSTATES) {
@@ -119,12 +112,12 @@ int decode_pstates(unsigned int cpu, unsigned int cpu_family,
}
if (read_msr(cpu, MSR_AMD_PSTATE + i, &pstate.val))
return -1;
- if ((cpu_family == 0x17) && (!pstate.fam17h_bits.en))
- continue;
- else if (!pstate.bits.en)
+
+ /* The enabled bit (bit 63) is common for all families */
+ if (!pstate.pstatedef.en)
continue;

- pstates[i] = get_cof(cpu_family, pstate);
+ pstates[i] = get_cof(pstate);
}
*no = i;
return 0;
diff --git a/tools/power/cpupower/utils/helpers/cpuid.c b/tools/power/cpupower/utils/helpers/cpuid.c
index 73bfafc60e9b..72eb43593180 100644
--- a/tools/power/cpupower/utils/helpers/cpuid.c
+++ b/tools/power/cpupower/utils/helpers/cpuid.c
@@ -128,9 +128,23 @@ int get_cpu_info(struct cpupower_cpu_info *cpu_info)
/* AMD or Hygon Boost state enable/disable register */
if (cpu_info->vendor == X86_VENDOR_AMD ||
cpu_info->vendor == X86_VENDOR_HYGON) {
- if (ext_cpuid_level >= 0x80000007 &&
- (cpuid_edx(0x80000007) & (1 << 9)))
- cpu_info->caps |= CPUPOWER_CAP_AMD_CBP;
+ if (ext_cpuid_level >= 0x80000007) {
+ if (cpuid_edx(0x80000007) & (1 << 9)) {
+ cpu_info->caps |= CPUPOWER_CAP_AMD_CPB;
+
+ if (cpu_info->family >= 0x17)
+ cpu_info->caps |= CPUPOWER_CAP_AMD_CPB_MSR;
+ }
+
+ if ((cpuid_edx(0x80000007) & (1 << 7)) &&
+ cpu_info->family != 0x14) {
+ /* HW pstate was not implemented in family 0x14 */
+ cpu_info->caps |= CPUPOWER_CAP_AMD_HW_PSTATE;
+
+ if (cpu_info->family >= 0x17)
+ cpu_info->caps |= CPUPOWER_CAP_AMD_PSTATEDEF;
+ }
+ }

if (ext_cpuid_level >= 0x80000008 &&
cpuid_ebx(0x80000008) & (1 << 4))
diff --git a/tools/power/cpupower/utils/helpers/helpers.h b/tools/power/cpupower/utils/helpers/helpers.h
index 0642e60a6ce1..33ffacee7fcb 100644
--- a/tools/power/cpupower/utils/helpers/helpers.h
+++ b/tools/power/cpupower/utils/helpers/helpers.h
@@ -64,12 +64,15 @@ enum cpupower_cpu_vendor {X86_VENDOR_UNKNOWN = 0, X86_VENDOR_INTEL,

#define CPUPOWER_CAP_INV_TSC 0x00000001
#define CPUPOWER_CAP_APERF 0x00000002
-#define CPUPOWER_CAP_AMD_CBP 0x00000004
+#define CPUPOWER_CAP_AMD_CPB 0x00000004
#define CPUPOWER_CAP_PERF_BIAS 0x00000008
#define CPUPOWER_CAP_HAS_TURBO_RATIO 0x00000010
#define CPUPOWER_CAP_IS_SNB 0x00000020
#define CPUPOWER_CAP_INTEL_IDA 0x00000040
#define CPUPOWER_CAP_AMD_RDPRU 0x00000080
+#define CPUPOWER_CAP_AMD_HW_PSTATE 0x00000100
+#define CPUPOWER_CAP_AMD_PSTATEDEF 0x00000200
+#define CPUPOWER_CAP_AMD_CPB_MSR 0x00000400

#define CPUPOWER_AMD_CPBDIS 0x02000000

@@ -125,8 +128,8 @@ extern struct pci_dev *pci_slot_func_init(struct pci_access **pacc,

/* AMD HW pstate decoding **************************/

-extern int decode_pstates(unsigned int cpu, unsigned int cpu_family,
- int boost_states, unsigned long *pstates, int *no);
+extern int decode_pstates(unsigned int cpu, int boost_states,
+ unsigned long *pstates, int *no);

/* AMD HW pstate decoding **************************/

@@ -143,9 +146,8 @@ unsigned int cpuid_edx(unsigned int op);
/* cpuid and cpuinfo helpers **************************/
/* X86 ONLY ********************************************/
#else
-static inline int decode_pstates(unsigned int cpu, unsigned int cpu_family,
- int boost_states, unsigned long *pstates,
- int *no)
+static inline int decode_pstates(unsigned int cpu, int boost_states,
+ unsigned long *pstates, int *no)
{ return -1; };

static inline int read_msr(int cpu, unsigned int idx, unsigned long long *val)
diff --git a/tools/power/cpupower/utils/helpers/misc.c b/tools/power/cpupower/utils/helpers/misc.c
index 650b9a9a6584..fc6e34511721 100644
--- a/tools/power/cpupower/utils/helpers/misc.c
+++ b/tools/power/cpupower/utils/helpers/misc.c
@@ -16,17 +16,12 @@
int cpufreq_has_boost_support(unsigned int cpu, int *support, int *active,
int *states)
{
- struct cpupower_cpu_info cpu_info;
int ret;
unsigned long long val;

*support = *active = *states = 0;

- ret = get_cpu_info(&cpu_info);
- if (ret)
- return ret;
-
- if (cpupower_cpu_info.caps & CPUPOWER_CAP_AMD_CBP) {
+ if (cpupower_cpu_info.caps & CPUPOWER_CAP_AMD_CPB) {
*support = 1;

/* AMD Family 0x17 does not utilize PCI D18F4 like prior
@@ -34,7 +29,7 @@ int cpufreq_has_boost_support(unsigned int cpu, int *support, int *active,
* has Hardware determined variable increments instead.
*/

- if (cpu_info.family == 0x17 || cpu_info.family == 0x18) {
+ if (cpupower_cpu_info.caps & CPUPOWER_CAP_AMD_CPB_MSR) {
if (!read_msr(cpu, MSR_AMD_HWCR, &val)) {
if (!(val & CPUPOWER_AMD_CPBDIS))
*active = 1;
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