linux-kernel - [PATCH 7/8] cpupower: Remove family arg to decode

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Message-ID: <161133716232.59625.8399970891746681982.stgit@ethanol01c7-host.amd.com>
Date:   Fri, 22 Jan 2021 11:39:22 -0600
From:   Nathan Fontenot <nathan.fontenot@....com>
To:     rrichter@....com, shuah@...nel.org, linux-kernel@...r.kernel.org,
        trenn@...e.com, linux-pm@...r.kernel.org
Subject: [PATCH 7/8] cpupower: Remove family arg to decode_pstates()

The decode_pstates() routine no longer uses the CPU family and
the caleed routines (get_cof() and get_did()) can grab the family
from the global cpupower_cpu_info struct. These update removes
passing the family arg to all these routines.

Signed-off-by: Nathan Fontenot <nathan.fontenot@....com>
---
 tools/power/cpupower/utils/cpufreq-info.c    |    3 +--
 tools/power/cpupower/utils/helpers/amd.c     |   19 +++++++++----------
 tools/power/cpupower/utils/helpers/helpers.h |    9 ++++-----
 3 files changed, 14 insertions(+), 17 deletions(-)

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 20694c3f367b..01bb85121216 100644
--- a/tools/power/cpupower/utils/helpers/amd.c
+++ b/tools/power/cpupower/utils/helpers/amd.c
@@ -41,13 +41,13 @@ union core_pstate {
 	unsigned long long val;
 };
 
-static int get_did(int family, union core_pstate pstate)
+static int get_did(union core_pstate pstate)
 {
 	int t;
 
 	if (cpupower_cpu_info.caps & CPUPOWER_CAP_AMD_PSTATEDEF)
 		t = pstate.pstatedef.did;
-	else if (family == 0x12)
+	else if (cpupower_cpu_info.family == 0x12)
 		t = pstate.val & 0xf;
 	else
 		t = pstate.pstate.did;
@@ -55,19 +55,19 @@ static int get_did(int family, union core_pstate pstate)
 	return t;
 }
 
-static int get_cof(int family, union core_pstate pstate)
+static int get_cof(union core_pstate pstate)
 {
 	int t;
 	int fid, did, cof;
 
-	did = get_did(family, pstate);
+	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.pstate.fid;
-		if (family == 0x11)
+		if (cpupower_cpu_info.family == 0x11)
 			t = 0x8;
 		cof = (100 * (fid + t)) >> did;
 	}
@@ -76,8 +76,7 @@ static int get_cof(int family, union core_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
@@ -87,8 +86,8 @@ static int get_cof(int family, union core_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;
 	union core_pstate pstate;
@@ -115,7 +114,7 @@ int decode_pstates(unsigned int cpu, unsigned int cpu_family,
 		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/helpers.h b/tools/power/cpupower/utils/helpers/helpers.h
index e4dc44ced770..8a0c11c6ec63 100644
--- a/tools/power/cpupower/utils/helpers/helpers.h
+++ b/tools/power/cpupower/utils/helpers/helpers.h
@@ -127,8 +127,8 @@ 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 **************************/
 
@@ -145,9 +145,8 @@ 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)