Re: [PATCH] MIPS: Display CPU byteorder in /proc/cpuinfo

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On 01/19/2015 01:02 AM, Joshua Kinard wrote:
From: Joshua Kinard <kumba@xxxxxxxxxx>

This is a small patch to display the CPU byteorder that the kernel was compiled
with in /proc/cpuinfo.

What would use this?  Or in other words, why is this needed?

Userspace C code doesn't need this as it has its own standard ways of determining endianness.

If you need to know as a user you can do:

   readelf -h /bin/sh | grep Data | cut -d, -f2



Signed-off-by: Joshua Kinard <kumba@xxxxxxxxxx>
---
  arch/mips/kernel/proc.c |    5 +++++
  1 file changed, 5 insertions(+)

This patch has been submitted several times prior over the years (I think), but
I don't recall what, if any, objections there were to it.

linux-mips-proc-cpuinfo-byteorder.patch
diff --git a/arch/mips/kernel/proc.c b/arch/mips/kernel/proc.c
index 097fc8d..75e6a62 100644
--- a/arch/mips/kernel/proc.c
+++ b/arch/mips/kernel/proc.c
@@ -65,6 +65,11 @@ static int show_cpuinfo(struct seq_file *m, void *v)
  	seq_printf(m, "BogoMIPS\t\t: %u.%02u\n",
  		      cpu_data[n].udelay_val / (500000/HZ),
  		      (cpu_data[n].udelay_val / (5000/HZ)) % 100);
+#ifdef __MIPSEB__
+	seq_printf(m, "byteorder\t\t: big endian\n");
+#else
+	seq_printf(m, "byteorder\t\t: little endian\n");
+#endif
  	seq_printf(m, "wait instruction\t: %s\n", cpu_wait ? "yes" : "no");
  	seq_printf(m, "microsecond timers\t: %s\n",
  		      cpu_has_counter ? "yes" : "no");








[Index of Archives]     [Linux MIPS Home]     [LKML Archive]     [Linux ARM Kernel]     [Linux ARM]     [Linux]     [Git]     [Yosemite News]     [Linux SCSI]     [Linux Hams]

  Powered by Linux