From: Michael Neuling <mikey@neuling•org>
To: Segher Boessenkool <segher@kernel•crashing.org>
Cc: linuxppc-dev@ozlabs•org
Subject: Re: [PATCH] powerpc: print cores passed to firmware in decimal
Date: Fri, 23 Jul 2010 09:15:50 +1000 [thread overview]
Message-ID: <31471.1279840550@neuling.org> (raw)
In-Reply-To: <F9116E5B-643A-490D-A080-FC9FF85C9CD7@kernel.crashing.org>
Currently we look pretty stupid when printing out the number of cores
passed to FW
Max number of cores passed to firmware: 0x0000000000000080
So I've change this to print in decimal:
Max number of cores passed to firmware: 128 (NR_CPUS = 256)
This required adding a prom_print_dec() function.
Signed-off-by: Michael Neuling <mikey@neuling•org>
--
> Unsigned long should be "%lu".
Changed %i to %lu as per Segher request
arch/powerpc/kernel/prom_init.c | 35 ++++++++++++++++++++++++++++++++---
1 files changed, 32 insertions(+), 3 deletions(-)
diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c
index 3b6f8ae..e8b68ff 100644
--- a/arch/powerpc/kernel/prom_init.c
+++ b/arch/powerpc/kernel/prom_init.c
@@ -311,6 +311,27 @@ static void __init prom_print_hex(unsigned long val)
call_prom("write", 3, 1, _prom->stdout, buf, nibbles);
}
+/* max number of decimal digits in an unsigned long */
+#define UL_DIGITS 21
+static void __init prom_print_dec(unsigned long val)
+{
+ int i, size;
+ char buf[UL_DIGITS+1];
+ struct prom_t *_prom = &RELOC(prom);
+
+ for (i = UL_DIGITS-1; i >= 0; i--) {
+ buf[i] = (val % 10) + '0';
+ val = val/10;
+ if (val == 0)
+ break;
+ }
+ /* shift stuff down */
+ size = UL_DIGITS - i;
+ for (i = 0 ; i < size ; i++)
+ buf[i] = buf[i + UL_DIGITS - size];
+ buf[size+1] = '\0';
+ call_prom("write", 3, 1, _prom->stdout, buf, size);
+}
static void __init prom_printf(const char *format, ...)
{
@@ -350,6 +371,14 @@ static void __init prom_printf(const char *format, ...)
v = va_arg(args, unsigned long);
prom_print_hex(v);
break;
+ case 'l':
+ ++q;
+ if (*q == 'u') { /* '%lx' */
+ ++q;
+ v = va_arg(args, unsigned long);
+ prom_print_dec(v);
+ }
+ break;
}
}
}
@@ -869,12 +898,12 @@ static void __init prom_send_capabilities(void)
cores = (u32 *)PTRRELOC(&ibm_architecture_vec[IBM_ARCH_VEC_NRCORES_OFFSET]);
if (*cores != NR_CPUS) {
prom_printf("WARNING ! "
- "ibm_architecture_vec structure inconsistent: 0x%x !\n",
+ "ibm_architecture_vec structure inconsistent: 0x%lu !\n",
*cores);
} else {
*cores = DIV_ROUND_UP(NR_CPUS, prom_count_smt_threads());
- prom_printf("Max number of cores passed to firmware: 0x%x\n",
- (unsigned long)*cores);
+ prom_printf("Max number of cores passed to firmware: %lu (NR_CPUS = %lu)\n",
+ *cores, NR_CPUS);
}
/* try calling the ibm,client-architecture-support method */
next prev parent reply other threads:[~2010-07-22 23:15 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-07-22 5:15 [PATCH] powerpc: print cores passed to firmware in decimal Michael Neuling
2010-07-22 15:11 ` Segher Boessenkool
2010-07-22 23:15 ` Michael Neuling [this message]
2010-07-22 21:09 ` Jesse Larrew
2010-07-23 1:44 ` Michael Neuling
2010-07-28 1:24 ` [PATCH] powerpc: print decimal values in prom_init.c Michael Neuling
2010-07-28 4:26 ` Michael Neuling
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