[Crash-utility] [PATCH v2 08/17] MIPS64: Add to get processor speed

Obtain the processor speed from the kernel symbol "mips_cpu_frequency" or "cpu_clock_freq". E.g. With this patch: ... MACHINE: mips64 (1800 Mhz) ... Signed-off-by: Huacai Chen <chenhuacai(a)loongson.cn&gt; Signed-off-by: Youling Tang <tangyouling(a)loongson.cn&gt; --- v1 -> v2: - No change. mips64.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/mips64.c b/mips64.c index e427746..b2a499c 100644 --- a/mips64.c +++ b/mips64.c @@ -355,9 +355,29 @@ mips64_vmalloc_start(void) return 0; } +/* + * Calculate and return the speed of the processor. + */ static ulong mips64_processor_speed(void) { + unsigned long cpu_hz1 = 0, cpu_hz2 = 0; + + if (machdep->mhz) + return (machdep->mhz); + + if (symbol_exists("mips_cpu_frequency")) { + get_symbol_data("mips_cpu_frequency", sizeof(int), &cpu_hz1); + if (cpu_hz1) + return(machdep->mhz = cpu_hz1/1000000); + } + + if (symbol_exists("cpu_clock_freq")) { + get_symbol_data("cpu_clock_freq", sizeof(int), &cpu_hz2); + if (cpu_hz2) + return(machdep->mhz = cpu_hz2/1000000); + } + return 0; } -- 2.1.0