[PATCH 3/4] arm64: cpufeature: use cpucap naming
Mark Rutland
mark.rutland at arm.com
Thu Jun 1 03:08:11 PDT 2023
To more clearly align the various users of the cpucap enumeration, this patch
changes the cpufeature code to use the term `cpucap` in favour of `cpu_hwap`.
This more clearly aligns with other users of the cpucaps, and avoids confusion
with the ELF hwcaps.
There should be no functional change as a result of this patch; this is
purely a renaming exercise.
Signed-off-by: Mark Rutland <mark.rutland at arm.com>
Cc: Catalin Marinas <catalin.marinas at arm.com>
Cc: Marc Zyngier <maz at kernel.org>
Cc: Mark Brown <broonie at kernel.org>
Cc: Suzuki Poulose <suzuki.poulose at arm.com>
Cc: Will Deacon <will at kernel.org>
---
arch/arm64/include/asm/mmu_context.h | 2 +-
arch/arm64/kernel/cpufeature.c | 38 ++++++++++++++--------------
2 files changed, 20 insertions(+), 20 deletions(-)
diff --git a/arch/arm64/include/asm/mmu_context.h b/arch/arm64/include/asm/mmu_context.h
index 56911691bef05..7f332854c961e 100644
--- a/arch/arm64/include/asm/mmu_context.h
+++ b/arch/arm64/include/asm/mmu_context.h
@@ -164,7 +164,7 @@ static inline void cpu_replace_ttbr1(pgd_t *pgdp, pgd_t *idmap)
* up (i.e. cpufeature framework is not up yet) and
* latter only when we enable CNP via cpufeature's
* enable() callback.
- * Also we rely on the cpu_hwcap bit being set before
+ * Also we rely on the system_cpucap bit being set before
* calling the enable() function.
*/
ttbr1 |= TTBR_CNP_BIT;
diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c
index 68e012f4ea080..82e6819528347 100644
--- a/arch/arm64/kernel/cpufeature.c
+++ b/arch/arm64/kernel/cpufeature.c
@@ -107,7 +107,7 @@ unsigned int compat_elf_hwcap2 __read_mostly;
DECLARE_BITMAP(system_cpucaps, ARM64_NCAPS);
EXPORT_SYMBOL(system_cpucaps);
-static struct arm64_cpu_capabilities const __ro_after_init *cpu_hwcaps_ptrs[ARM64_NCAPS];
+static struct arm64_cpu_capabilities const __ro_after_init *cpucap_ptrs[ARM64_NCAPS];
DECLARE_BITMAP(boot_cpucaps, ARM64_NCAPS);
@@ -954,24 +954,24 @@ extern const struct arm64_cpu_capabilities arm64_errata[];
static const struct arm64_cpu_capabilities arm64_features[];
static void __init
-init_cpu_hwcaps_indirect_list_from_array(const struct arm64_cpu_capabilities *caps)
+init_cpucap_indirect_list_from_array(const struct arm64_cpu_capabilities *caps)
{
for (; caps->matches; caps++) {
if (WARN(caps->capability >= ARM64_NCAPS,
"Invalid capability %d\n", caps->capability))
continue;
- if (WARN(cpu_hwcaps_ptrs[caps->capability],
+ if (WARN(cpucap_ptrs[caps->capability],
"Duplicate entry for capability %d\n",
caps->capability))
continue;
- cpu_hwcaps_ptrs[caps->capability] = caps;
+ cpucap_ptrs[caps->capability] = caps;
}
}
-static void __init init_cpu_hwcaps_indirect_list(void)
+static void __init init_cpucap_indirect_list(void)
{
- init_cpu_hwcaps_indirect_list_from_array(arm64_features);
- init_cpu_hwcaps_indirect_list_from_array(arm64_errata);
+ init_cpucap_indirect_list_from_array(arm64_features);
+ init_cpucap_indirect_list_from_array(arm64_errata);
}
static void __init setup_boot_cpu_capabilities(void);
@@ -1049,10 +1049,10 @@ void __init init_cpu_features(struct cpuinfo_arm64 *info)
init_cpu_ftr_reg(SYS_GMID_EL1, info->reg_gmid);
/*
- * Initialize the indirect array of CPU hwcaps capabilities pointers
- * before we handle the boot CPU below.
+ * Initialize the indirect array of CPU capabilities pointers before we
+ * handle the boot CPU below.
*/
- init_cpu_hwcaps_indirect_list();
+ init_cpucap_indirect_list();
/*
* Detect and enable early CPU capabilities based on the boot CPU,
@@ -2048,9 +2048,9 @@ static bool has_address_auth_cpucap(const struct arm64_cpu_capabilities *entry,
static bool has_address_auth_metacap(const struct arm64_cpu_capabilities *entry,
int scope)
{
- bool api = has_address_auth_cpucap(cpu_hwcaps_ptrs[ARM64_HAS_ADDRESS_AUTH_IMP_DEF], scope);
- bool apa = has_address_auth_cpucap(cpu_hwcaps_ptrs[ARM64_HAS_ADDRESS_AUTH_ARCH_QARMA5], scope);
- bool apa3 = has_address_auth_cpucap(cpu_hwcaps_ptrs[ARM64_HAS_ADDRESS_AUTH_ARCH_QARMA3], scope);
+ bool api = has_address_auth_cpucap(cpucap_ptrs[ARM64_HAS_ADDRESS_AUTH_IMP_DEF], scope);
+ bool apa = has_address_auth_cpucap(cpucap_ptrs[ARM64_HAS_ADDRESS_AUTH_ARCH_QARMA5], scope);
+ bool apa3 = has_address_auth_cpucap(cpucap_ptrs[ARM64_HAS_ADDRESS_AUTH_ARCH_QARMA3], scope);
return apa || apa3 || api;
}
@@ -2895,7 +2895,7 @@ static void update_cpu_capabilities(u16 scope_mask)
scope_mask &= ARM64_CPUCAP_SCOPE_MASK;
for (i = 0; i < ARM64_NCAPS; i++) {
- caps = cpu_hwcaps_ptrs[i];
+ caps = cpucap_ptrs[i];
if (!caps || !(caps->type & scope_mask) ||
cpus_have_cap(caps->capability) ||
!caps->matches(caps, cpucap_default_scope(caps)))
@@ -2920,7 +2920,7 @@ static int cpu_enable_non_boot_scope_capabilities(void *__unused)
u16 non_boot_scope = SCOPE_ALL & ~SCOPE_BOOT_CPU;
for_each_available_cap(i) {
- const struct arm64_cpu_capabilities *cap = cpu_hwcaps_ptrs[i];
+ const struct arm64_cpu_capabilities *cap = cpucap_ptrs[i];
if (WARN_ON(!cap))
continue;
@@ -2950,7 +2950,7 @@ static void __init enable_cpu_capabilities(u16 scope_mask)
for (i = 0; i < ARM64_NCAPS; i++) {
unsigned int num;
- caps = cpu_hwcaps_ptrs[i];
+ caps = cpucap_ptrs[i];
if (!caps || !(caps->type & scope_mask))
continue;
num = caps->capability;
@@ -2995,7 +2995,7 @@ static void verify_local_cpu_caps(u16 scope_mask)
scope_mask &= ARM64_CPUCAP_SCOPE_MASK;
for (i = 0; i < ARM64_NCAPS; i++) {
- caps = cpu_hwcaps_ptrs[i];
+ caps = cpucap_ptrs[i];
if (!caps || !(caps->type & scope_mask))
continue;
@@ -3194,7 +3194,7 @@ static void __init setup_boot_cpu_capabilities(void)
bool this_cpu_has_cap(unsigned int n)
{
if (!WARN_ON(preemptible()) && n < ARM64_NCAPS) {
- const struct arm64_cpu_capabilities *cap = cpu_hwcaps_ptrs[n];
+ const struct arm64_cpu_capabilities *cap = cpucap_ptrs[n];
if (cap)
return cap->matches(cap, SCOPE_LOCAL_CPU);
@@ -3213,7 +3213,7 @@ EXPORT_SYMBOL_GPL(this_cpu_has_cap);
static bool __maybe_unused __system_matches_cap(unsigned int n)
{
if (n < ARM64_NCAPS) {
- const struct arm64_cpu_capabilities *cap = cpu_hwcaps_ptrs[n];
+ const struct arm64_cpu_capabilities *cap = cpucap_ptrs[n];
if (cap)
return cap->matches(cap, SCOPE_SYSTEM);
--
2.30.2
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