On Saturday 22 February 2014 05:44 AM, Cody P Schafer wrote:
> /sys/devices/system/cpu/cpu*/smt-snooze-delay was converted into a NOP
> in commit 3fa8cad82b94d0bed002571bd246f2299ffc876b, and now does
> nothing. Add a pr_warn() to convince any users that they should stop
> using it.
>
> The commit message from the removing commit notes that this
> functionality should move into the cpuidle driver, essentially by
Would prefer to cleanup the code since the functionality is moved,
instead of adding to it.
> adjusting target_residency to the specified value. At the moment,
> target_residency is not exposed by cpuidle's sysfs, so there isn't a
> drop in replacement for this.
>
> Signed-off-by: Cody P Schafer <c...@linux.vnet.ibm.com>
> ---
> arch/powerpc/kernel/sysfs.c | 6 ++++++
> 1 file changed, 6 insertions(+)
>
> diff --git a/arch/powerpc/kernel/sysfs.c b/arch/powerpc/kernel/sysfs.c
> index 97e1dc9..84097b4 100644
> --- a/arch/powerpc/kernel/sysfs.c
> +++ b/arch/powerpc/kernel/sysfs.c
> @@ -50,6 +50,9 @@ static ssize_t store_smt_snooze_delay(struct device *dev,
> if (ret != 1)
> return -EINVAL;
>
> + pr_warn_ratelimited("%s (%d):
> /sys/devices/system/cpu/cpu%d/smt-snooze-delay is deprecated and is a NOP\n",
> + current->comm, task_pid_nr(current), cpu->dev.id);
> +
> per_cpu(smt_snooze_delay, cpu->dev.id) = snooze;
> return count;
> }
> @@ -60,6 +63,9 @@ static ssize_t show_smt_snooze_delay(struct device *dev,
> {
> struct cpu *cpu = container_of(dev, struct cpu, dev);
>
> + pr_warn_ratelimited("%s (%d):
> /sys/devices/system/cpu/cpu%d/smt-snooze-delay is deprecated and is a NOP\n",
> + current->comm, task_pid_nr(current), cpu->dev.id);
> +
> return sprintf(buf, "%ld\n", per_cpu(smt_snooze_delay, cpu->dev.id));
> }
>
>
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