From: Anton Blanchard <anton@samba.org>
To: benh@kernel.crashing.org, nfont@austin.ibm.com
Cc: linuxppc-dev@ozlabs.org
Subject: [PATCH 1/2] powerpc: Remove ibm,smt-snooze-delay OF property
Date: Mon, 17 May 2010 16:01:28 +1000 [thread overview]
Message-ID: <20100517060128.GC13509@kryten> (raw)
I'm not sure why we have code for parsing an ibm,smt-snooze-delay OF
property. Since we have a smt-snooze-delay= boot option and we can
also set it at runtime via sysfs, it should be safe to get rid of
this code.
Signed-off-by: Anton Blanchard <anton@samba.org>
---
Index: powerpc.git/arch/powerpc/kernel/sysfs.c
===================================================================
--- powerpc.git.orig/arch/powerpc/kernel/sysfs.c 2010-05-17 15:05:29.917208655 +1000
+++ powerpc.git/arch/powerpc/kernel/sysfs.c 2010-05-17 15:18:24.164704601 +1000
@@ -67,33 +67,6 @@ static ssize_t show_smt_snooze_delay(str
static SYSDEV_ATTR(smt_snooze_delay, 0644, show_smt_snooze_delay,
store_smt_snooze_delay);
-/* Only parse OF options if the matching cmdline option was not specified */
-static int smt_snooze_cmdline;
-
-static int __init smt_setup(void)
-{
- struct device_node *options;
- const unsigned int *val;
- unsigned int cpu;
-
- if (!cpu_has_feature(CPU_FTR_SMT))
- return -ENODEV;
-
- options = of_find_node_by_path("/options");
- if (!options)
- return -ENODEV;
-
- val = of_get_property(options, "ibm,smt-snooze-delay", NULL);
- if (!smt_snooze_cmdline && val) {
- for_each_possible_cpu(cpu)
- per_cpu(smt_snooze_delay, cpu) = *val;
- }
-
- of_node_put(options);
- return 0;
-}
-__initcall(smt_setup);
-
static int __init setup_smt_snooze_delay(char *str)
{
unsigned int cpu;
@@ -102,8 +75,6 @@ static int __init setup_smt_snooze_delay
if (!cpu_has_feature(CPU_FTR_SMT))
return 1;
- smt_snooze_cmdline = 1;
-
if (get_option(&str, &snooze)) {
for_each_possible_cpu(cpu)
per_cpu(smt_snooze_delay, cpu) = snooze;
next reply other threads:[~2010-05-17 6:01 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-05-17 6:01 Anton Blanchard [this message]
2010-05-17 6:02 ` [PATCH 2/2] powerpc: Use smt_snooze_delay=-1 to always busy loop Anton Blanchard
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