This implementation has a 'cpu' prefix and returns a pointer to the string,
avoiding the need for copying.
Signed-off-by: Simon Glass <s...@chromium.org>
---
Changes in v2:
- Add new patch to replace fill_processor_name() with cpu_get_name()
arch/x86/cpu/cpu.c | 22 ++++++++++------------
arch/x86/include/asm/cpu.h | 11 ++++++++---
2 files changed, 18 insertions(+), 15 deletions(-)
diff --git a/arch/x86/cpu/cpu.c b/arch/x86/cpu/cpu.c
index a4e639d..0d75941 100644
--- a/arch/x86/cpu/cpu.c
+++ b/arch/x86/cpu/cpu.c
@@ -491,14 +491,14 @@ const char *cpu_vendor_name(int vendor)
return name;
}
-void fill_processor_name(char *processor_name)
+char *cpu_get_name(char *name)
{
+ unsigned int *name_as_ints = (unsigned int *)name;
struct cpuid_result regs;
- char temp_processor_name[49];
- char *processor_name_start;
- unsigned int *name_as_ints = (unsigned int *)temp_processor_name;
+ char *ptr;
int i;
+ /* This bit adds up to 48 bytes */
for (i = 0; i < 3; i++) {
regs = cpuid(0x80000002 + i);
name_as_ints[i * 4 + 0] = regs.eax;
@@ -506,19 +506,17 @@ void fill_processor_name(char *processor_name)
name_as_ints[i * 4 + 2] = regs.ecx;
name_as_ints[i * 4 + 3] = regs.edx;
}
-
- temp_processor_name[48] = 0;
+ name[CPU_MAX_NAME_LEN - 1] = '\0';
/* Skip leading spaces. */
- processor_name_start = temp_processor_name;
- while (*processor_name_start == ' ')
- processor_name_start++;
+ ptr = name;
+ while (*ptr == ' ')
+ ptr++;
- memset(processor_name, 0, 49);
- strcpy(processor_name, processor_name_start);
+ return ptr;
}
-int print_cpuinfo(void)
+int default_print_cpuinfo(void)
{
printf("CPU: %s, vendor %s, device %xh\n",
cpu_has_64bit() ? "x86_64" : "x86",
diff --git a/arch/x86/include/asm/cpu.h b/arch/x86/include/asm/cpu.h
index 89b748b..c839291 100644
--- a/arch/x86/include/asm/cpu.h
+++ b/arch/x86/include/asm/cpu.h
@@ -179,12 +179,17 @@ int cpu_has_64bit(void);
*/
const char *cpu_vendor_name(int vendor);
+#define CPU_MAX_NAME_LEN 49
+
/**
- * fill_processor_name() - Get processor name
+ * cpu_get_name() - Get the name of the current cpu
*
- * @processor_name: Address to hold the processor name string
+ * @name: Place to put name, which must be CPU_MAX_NAME_LEN bytes including
+ * @return pointer to name, which will likely be a few bytes after the start
+ * of @name
+ * \0 terminator
*/
-void fill_processor_name(char *processor_name);
+char *cpu_get_name(char *name);
/**
* cpu_call64() - Jump to a 64-bit Linux kernel (internal function)
--
2.1.0.rc2.206.gedb03e5
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