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Date: Wed, 8 Apr 2020 19:34:13 +0800
From: Jiaxun Yang <jiaxun.yang@...goat.com>
To: linux-mips@...r.kernel.org
Cc: Jiaxun Yang <jiaxun.yang@...goat.com>,
Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
Huacai Chen <chenhc@...ote.com>,
Peter Zijlstra <peterz@...radead.org>,
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>,
Florian Fainelli <f.fainelli@...il.com>,
Robert Richter <rric@...nel.org>,
Sudeep Holla <sudeep.holla@....com>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
"Rafael J. Wysocki" <rafael@...nel.org>,
Thomas Gleixner <tglx@...utronix.de>,
Jason Cooper <jason@...edaemon.net>,
Marc Zyngier <maz@...nel.org>,
Paul Burton <paulburton@...nel.org>,
Allison Randal <allison@...utok.net>,
Enrico Weigelt <info@...ux.net>,
Kate Stewart <kstewart@...uxfoundation.org>,
Vladimir Kondratiev <vladimir.kondratiev@...el.com>,
Paul Cercueil <paul@...pouillou.net>,
Zhou Yanjie <zhouyanjie@...o.com>,
周琰杰 (Zhou Yanjie)
<zhouyanjie@...yeetech.com>, YunQiang Su <syq@...ian.org>,
Arnd Bergmann <arnd@...db.de>,
Serge Semin <fancer.lancer@...il.com>,
Matt Redfearn <matt.redfearn@...s.com>,
Steve Winslow <swinslow@...il.com>,
Alexios Zavras <alexios.zavras@...el.com>,
Richard Fontana <rfontana@...hat.com>,
afzal mohammed <afzal.mohd.ma@...il.com>,
Peter Xu <peterx@...hat.com>,
Mike Rapoport <rppt@...ux.ibm.com>,
Oleksij Rempel <linux@...pel-privat.de>,
Kamal Dasu <kdasu.kdev@...il.com>,
linux-kernel@...r.kernel.org,
bcm-kernel-feedback-list@...adcom.com, oprofile-list@...ts.sf.net
Subject: [PATCH 03/12] arch_topology: Make it avilable for MIPS
Simply drop unnecessary archtecture limitions and add dummy
function for platforms without OF/COMMON_CLK support.
Also exclude functions for arm that existed in platform code.
Signed-off-by: Jiaxun Yang <jiaxun.yang@...goat.com>
---
drivers/base/arch_topology.c | 121 +++++++++++++++++++----------------
1 file changed, 66 insertions(+), 55 deletions(-)
diff --git a/drivers/base/arch_topology.c b/drivers/base/arch_topology.c
index 4d0a0038b476..9c2405d08dae 100644
--- a/drivers/base/arch_topology.c
+++ b/drivers/base/arch_topology.c
@@ -143,57 +143,6 @@ void topology_normalize_cpu_scale(void)
}
}
-bool __init topology_parse_cpu_capacity(struct device_node *cpu_node, int cpu)
-{
- struct clk *cpu_clk;
- static bool cap_parsing_failed;
- int ret;
- u32 cpu_capacity;
-
- if (cap_parsing_failed)
- return false;
-
- ret = of_property_read_u32(cpu_node, "capacity-dmips-mhz",
- &cpu_capacity);
- if (!ret) {
- if (!raw_capacity) {
- raw_capacity = kcalloc(num_possible_cpus(),
- sizeof(*raw_capacity),
- GFP_KERNEL);
- if (!raw_capacity) {
- cap_parsing_failed = true;
- return false;
- }
- }
- raw_capacity[cpu] = cpu_capacity;
- pr_debug("cpu_capacity: %pOF cpu_capacity=%u (raw)\n",
- cpu_node, raw_capacity[cpu]);
-
- /*
- * Update freq_factor for calculating early boot cpu capacities.
- * For non-clk CPU DVFS mechanism, there's no way to get the
- * frequency value now, assuming they are running at the same
- * frequency (by keeping the initial freq_factor value).
- */
- cpu_clk = of_clk_get(cpu_node, 0);
- if (!PTR_ERR_OR_ZERO(cpu_clk)) {
- per_cpu(freq_factor, cpu) =
- clk_get_rate(cpu_clk) / 1000;
- clk_put(cpu_clk);
- }
- } else {
- if (raw_capacity) {
- pr_err("cpu_capacity: missing %pOF raw capacity\n",
- cpu_node);
- pr_err("cpu_capacity: partial information: fallback to 1024 for all CPUs\n");
- }
- cap_parsing_failed = true;
- free_raw_capacity();
- }
-
- return !ret;
-}
-
#ifdef CONFIG_CPU_FREQ
static cpumask_var_t cpus_to_visit;
static void parsing_done_workfn(struct work_struct *work);
@@ -275,7 +224,64 @@ static void parsing_done_workfn(struct work_struct *work)
core_initcall(free_raw_capacity);
#endif
-#if defined(CONFIG_ARM64) || defined(CONFIG_RISCV)
+#if defined(CONFIG_OF) && !defined(CONFIG_ARM)
+#if defined(CONFIG_COMMON_CLK)
+bool __init topology_parse_cpu_capacity(struct device_node *cpu_node, int cpu)
+{
+ struct clk *cpu_clk;
+ static bool cap_parsing_failed;
+ int ret;
+ u32 cpu_capacity;
+
+ if (cap_parsing_failed)
+ return false;
+
+ ret = of_property_read_u32(cpu_node, "capacity-dmips-mhz",
+ &cpu_capacity);
+ if (!ret) {
+ if (!raw_capacity) {
+ raw_capacity = kcalloc(num_possible_cpus(),
+ sizeof(*raw_capacity),
+ GFP_KERNEL);
+ if (!raw_capacity) {
+ cap_parsing_failed = true;
+ return false;
+ }
+ }
+ raw_capacity[cpu] = cpu_capacity;
+ pr_debug("cpu_capacity: %pOF cpu_capacity=%u (raw)\n",
+ cpu_node, raw_capacity[cpu]);
+
+ /*
+ * Update freq_factor for calculating early boot cpu capacities.
+ * For non-clk CPU DVFS mechanism, there's no way to get the
+ * frequency value now, assuming they are running at the same
+ * frequency (by keeping the initial freq_factor value).
+ */
+ cpu_clk = of_clk_get(cpu_node, 0);
+ if (!PTR_ERR_OR_ZERO(cpu_clk)) {
+ per_cpu(freq_factor, cpu) =
+ clk_get_rate(cpu_clk) / 1000;
+ clk_put(cpu_clk);
+ }
+ } else {
+ if (raw_capacity) {
+ pr_err("cpu_capacity: missing %pOF raw capacity\n",
+ cpu_node);
+ pr_err("cpu_capacity: partial information: fallback to 1024 for all CPUs\n");
+ }
+ cap_parsing_failed = true;
+ free_raw_capacity();
+ }
+
+ return !ret;
+}
+#else
+bool __init topology_parse_cpu_capacity(struct device_node *cpu_node, int cpu)
+{
+ return false;
+}
+#endif /* CONFIG_COMMON_CLK */
/*
* This function returns the logic cpu number of the node.
* There are basically three kinds of return values:
@@ -461,7 +467,12 @@ static int __init parse_dt_topology(void)
of_node_put(cn);
return ret;
}
-#endif
+#else
+static int __init parse_dt_topology(void)
+{
+ return 0;
+}
+#endif /* CONFIG_OF & !CONFIG_ARM */
/*
* cpu topology table
@@ -562,7 +573,7 @@ __weak int __init parse_acpi_topology(void)
return 0;
}
-#if defined(CONFIG_ARM64) || defined(CONFIG_RISCV)
+#if !defined(CONFIG_ARM)
void __init init_cpu_topology(void)
{
reset_cpu_topology();
@@ -576,4 +587,4 @@ void __init init_cpu_topology(void)
else if (of_have_populated_dt() && parse_dt_topology())
reset_cpu_topology();
}
-#endif
+#endif /* !CONFIG_ARM */
--
2.26.0.rc2
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