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SubjectRe: 2.5.64: cpufreq "userspace" governor doesn't compile

On Thu, 6 Mar 2003, Russell King wrote:

> On Wed, Mar 05, 2003 at 08:53:12PM +0100, Adrian Bunk wrote:
> > gcc -Wp,-MD,drivers/cpufreq/.userspace.o.d -D__KERNEL__ -Iinclude
> > -Wall -Wstrict-prototypes -Wno-trigraphs -O2 -fno-strict-aliasing
> > -fno-common -pipe -mpreferred-stack-boundary=2 -march=k6
> > -Iinclude/asm-i386/mach-default -nostdinc -iwithprefix include
> > -DKBUILD_BASENAME=userspace -DKBUILD_MODNAME=userspace -c -o
> > drivers/cpufreq/userspace.o drivers/cpufreq/userspace.c
> > drivers/cpufreq/userspace.c: In function `cpufreq_governor_userspace':
> > drivers/cpufreq/userspace.c:514: structure has no member named `intf'
> > drivers/cpufreq/userspace.c:523: structure has no member named `intf'
> > make[2]: *** [drivers/cpufreq/userspace.o] Error 1
>
> Dominik sent this patch to the cpufreq list to fix this. I'm not
> sure if it fixes this exact problem, but from reading the patch I
> think its worth a try. (its currently building here.)
>
> --- Dominik's message follows ---
>
> Forgot to cc the cpufreq list...: I just sent this patch to Linus:
>
> - update the userspace governor sysfs interface to get along with the
> new "device interface" model
>
> drivers/cpufreq/userspace.c | 29 ++++++++++++-----------------
> include/linux/cpufreq.h | 10 +++++++++-
> kernel/cpufreq.c | 6 ------
> 3 files changed, 21 insertions(+), 24 deletions(-)

I sent a patch to Linus last night that fixed the compile error, since I
broke it, but wasn't as complete a fix as this.

Dominik, the patch below is the patch just sent, relative to the current
BK tree. Sorry about this..

-pat

===== drivers/cpufreq/userspace.c 1.2 vs edited =====
--- 1.2/drivers/cpufreq/userspace.c Wed Mar 5 17:44:20 2003
+++ edited/drivers/cpufreq/userspace.c Thu Mar 6 11:11:49 2003
@@ -23,6 +23,7 @@
#include <linux/sysctl.h>
#include <linux/types.h>
#include <linux/fs.h>
+#include <linux/sysfs.h>

#include <asm/uaccess.h>

@@ -465,23 +466,14 @@


/************************** sysfs interface ************************/
-static inline int to_cpu_nr (struct device *dev)
+static ssize_t show_speed (struct cpufreq_policy *policy, char *buf)
{
- struct sys_device * cpu_sys_dev = container_of(dev, struct sys_device, dev);
- return (cpu_sys_dev->id);
-}
-
-static ssize_t show_speed (struct device *dev, char *buf)
-{
- unsigned int cpu = to_cpu_nr(dev);
-
- return sprintf (buf, "%u\n", cpu_cur_freq[cpu]);
+ return sprintf (buf, "%u\n", cpu_cur_freq[policy->cpu]);
}

static ssize_t
-store_speed (struct device *dev, const char *buf, size_t count)
+store_speed (struct cpufreq_policy *policy, const char *buf, size_t count)
{
- unsigned int cpu = to_cpu_nr(dev);
unsigned int freq = 0;
unsigned int ret;

@@ -489,13 +481,16 @@
if (ret != 1)
return -EINVAL;

- cpufreq_set(freq, cpu);
+ cpufreq_set(freq, policy->cpu);

return count;
}

-static DEVICE_ATTR(scaling_setspeed, (S_IRUGO | S_IWUSR), show_speed, store_speed);
-
+static struct freq_attr freq_attr_scaling_setspeed = {
+ .attr = { .name = "scaling_setspeed", .mode = 0644 },
+ .show = show_speed,
+ .store = store_speed,
+};

static int cpufreq_governor_userspace(struct cpufreq_policy *policy,
unsigned int event)
@@ -511,7 +506,7 @@
cpu_min_freq[cpu] = policy->min;
cpu_max_freq[cpu] = policy->max;
cpu_cur_freq[cpu] = policy->cur;
- device_create_file (policy->dev, &dev_attr_scaling_setspeed);
+ sysfs_create_file (&policy->kobj, &freq_attr_scaling_setspeed.attr);
memcpy (&current_policy[cpu], policy, sizeof(struct cpufreq_policy));
up(&userspace_sem);
break;
@@ -520,7 +515,7 @@
cpu_is_managed[cpu] = 0;
cpu_min_freq[cpu] = 0;
cpu_max_freq[cpu] = 0;
- device_remove_file (policy->dev, &dev_attr_scaling_setspeed);
+ sysfs_remove_file (&policy->kobj, &freq_attr_scaling_setspeed.attr);
up(&userspace_sem);
module_put(THIS_MODULE);
break;
===== include/linux/cpufreq.h 1.18 vs edited =====
--- 1.18/include/linux/cpufreq.h Mon Mar 3 16:38:51 2003
+++ edited/include/linux/cpufreq.h Thu Mar 6 11:09:36 2003
@@ -18,7 +18,8 @@
#include <linux/notifier.h>
#include <linux/threads.h>
#include <linux/device.h>
-
+#include <linux/kobject.h>
+#include <linux/sysfs.h>

#define CPUFREQ_NAME_LEN 16

@@ -193,6 +194,13 @@
policy->min = policy->max;
return;
}
+
+struct freq_attr {
+ struct attribute attr;
+ ssize_t (*show)(struct cpufreq_policy *, char *);
+ ssize_t (*store)(struct cpufreq_policy *, const char *, size_t count);
+};
+

/*********************************************************************
* CPUFREQ 2.6. INTERFACE *
===== kernel/cpufreq.c 1.21 vs edited =====
--- 1.21/kernel/cpufreq.c Mon Mar 3 16:38:51 2003
+++ edited/kernel/cpufreq.c Thu Mar 6 11:09:36 2003
@@ -206,12 +206,6 @@
}


-struct freq_attr {
- struct attribute attr;
- ssize_t (*show)(struct cpufreq_policy *, char *);
- ssize_t (*store)(struct cpufreq_policy *, const char *, size_t count);
-};
-
#define define_one_ro(_name) \
struct freq_attr _name = { \
.attr = { .name = __stringify(_name), .mode = 0444 }, \
-
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