This implementation has a 'cpu' prefix and returns a pointer to the string, avoiding the need for copying.
Signed-off-by: Simon Glass sjg@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)