From: Chen Gang <gang.chen.5i5j@gmail.com>
To: rjw@rjwysocki.net, pavel@ucw.cz, len.brown@intel.com,
gregkh@linuxfoundation.org, ulf.hansson@linaro.org,
khilman@linaro.org, geert+renesas@glider.be,
tomasz.figa@gmail.com, richard@nod.at
Cc: linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] drivers: base: power: domain: Use 'pm_cpu_data' instead of 'cpu_data' for compiling break
Date: Sat, 04 Oct 2014 22:20:34 +0800 [thread overview]
Message-ID: <54300232.8020809@gmail.com> (raw)
In-Reply-To: <54300206.3020206@gmail.com>
After this patch, our um can pass allmodconfig compiling.
Thanks.
On 10/4/14 22:19, Chen Gang wrote:
> 'cpu_data' is too common to be already used by some architectures (e.g.
> um, m32r, and mn10300), so need use 'pm_cpu_data' instead of, or cause
> compiling break. The related error (with allmodconfig under um):
>
> CC drivers/base/platform.o
> In file included from ./arch/x86/um/asm/processor.h:31:0,
> from ./arch/um/include/asm/uaccess.h:16,
> from ./arch/um/include/asm/thread_info.h:13,
> from include/linux/thread_info.h:54,
> from include/asm-generic/current.h:4,
> from arch/um/include/generated/asm/current.h:1,
> from include/linux/mutex.h:13,
> from include/linux/kernfs.h:13,
> from include/linux/sysfs.h:15,
> from include/linux/kobject.h:21,
> from include/linux/device.h:17,
> from include/linux/platform_device.h:14,
> from drivers/base/platform.c:14:
> ./arch/um/include/asm/processor-generic.h:107:19: error: expected identifier or '(' before '&' token
> #define cpu_data (&boot_cpu_data)
> ^
> include/linux/pm_domain.h:74:23: note: in expansion of macro 'cpu_data'
> struct gpd_cpu_data *cpu_data;
> ^
>
> Also need notice about 80 columns boundary.
>
>
> Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com>
> ---
> drivers/base/power/domain.c | 54 ++++++++++++++++++++++-----------------------
> include/linux/pm_domain.h | 2 +-
> 2 files changed, 28 insertions(+), 28 deletions(-)
>
> diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c
> index 18cc68d..d8d2739 100644
> --- a/drivers/base/power/domain.c
> +++ b/drivers/base/power/domain.c
> @@ -142,13 +142,13 @@ static void genpd_recalc_cpu_exit_latency(struct generic_pm_domain *genpd)
> {
> s64 usecs64;
>
> - if (!genpd->cpu_data)
> + if (!genpd->pm_cpu_data)
> return;
>
> usecs64 = genpd->power_on_latency_ns;
> do_div(usecs64, NSEC_PER_USEC);
> - usecs64 += genpd->cpu_data->saved_exit_latency;
> - genpd->cpu_data->idle_state->exit_latency = usecs64;
> + usecs64 += genpd->pm_cpu_data->saved_exit_latency;
> + genpd->pm_cpu_data->idle_state->exit_latency = usecs64;
> }
>
> /**
> @@ -188,9 +188,9 @@ static int __pm_genpd_poweron(struct generic_pm_domain *genpd)
> return 0;
> }
>
> - if (genpd->cpu_data) {
> + if (genpd->pm_cpu_data) {
> cpuidle_pause_and_lock();
> - genpd->cpu_data->idle_state->disabled = true;
> + genpd->pm_cpu_data->idle_state->disabled = true;
> cpuidle_resume_and_unlock();
> goto out;
> }
> @@ -513,17 +513,17 @@ static int pm_genpd_poweroff(struct generic_pm_domain *genpd)
> }
> }
>
> - if (genpd->cpu_data) {
> + if (genpd->pm_cpu_data) {
> /*
> - * If cpu_data is set, cpuidle should turn the domain off when
> - * the CPU in it is idle. In that case we don't decrement the
> - * subdomain counts of the master domains, so that power is not
> - * removed from the current domain prematurely as a result of
> - * cutting off the masters' power.
> + * If pm_cpu_data is set, cpuidle should turn the domain off
> + * when the CPU in it is idle. In that case we don't decrement
> + * the subdomain counts of the master domains, so that power is
> + * not removed from the current domain prematurely as a result
> + * of cutting off the masters' power.
> */
> genpd->status = GPD_STATE_POWER_OFF;
> cpuidle_pause_and_lock();
> - genpd->cpu_data->idle_state->disabled = false;
> + genpd->pm_cpu_data->idle_state->disabled = false;
> cpuidle_resume_and_unlock();
> goto out;
> }
> @@ -1698,7 +1698,7 @@ int pm_genpd_remove_subdomain(struct generic_pm_domain *genpd,
> int pm_genpd_attach_cpuidle(struct generic_pm_domain *genpd, int state)
> {
> struct cpuidle_driver *cpuidle_drv;
> - struct gpd_cpu_data *cpu_data;
> + struct gpd_cpu_data *pm_cpu_data;
> struct cpuidle_state *idle_state;
> int ret = 0;
>
> @@ -1707,12 +1707,12 @@ int pm_genpd_attach_cpuidle(struct generic_pm_domain *genpd, int state)
>
> genpd_acquire_lock(genpd);
>
> - if (genpd->cpu_data) {
> + if (genpd->pm_cpu_data) {
> ret = -EEXIST;
> goto out;
> }
> - cpu_data = kzalloc(sizeof(*cpu_data), GFP_KERNEL);
> - if (!cpu_data) {
> + pm_cpu_data = kzalloc(sizeof(*pm_cpu_data), GFP_KERNEL);
> + if (!pm_cpu_data) {
> ret = -ENOMEM;
> goto out;
> }
> @@ -1730,9 +1730,9 @@ int pm_genpd_attach_cpuidle(struct generic_pm_domain *genpd, int state)
> ret = -EAGAIN;
> goto err;
> }
> - cpu_data->idle_state = idle_state;
> - cpu_data->saved_exit_latency = idle_state->exit_latency;
> - genpd->cpu_data = cpu_data;
> + pm_cpu_data->idle_state = idle_state;
> + pm_cpu_data->saved_exit_latency = idle_state->exit_latency;
> + genpd->pm_cpu_data = pm_cpu_data;
> genpd_recalc_cpu_exit_latency(genpd);
>
> out:
> @@ -1743,7 +1743,7 @@ int pm_genpd_attach_cpuidle(struct generic_pm_domain *genpd, int state)
> cpuidle_driver_unref();
>
> err_drv:
> - kfree(cpu_data);
> + kfree(pm_cpu_data);
> goto out;
> }
>
> @@ -1766,7 +1766,7 @@ int pm_genpd_name_attach_cpuidle(const char *name, int state)
> */
> int pm_genpd_detach_cpuidle(struct generic_pm_domain *genpd)
> {
> - struct gpd_cpu_data *cpu_data;
> + struct gpd_cpu_data *pm_cpu_data;
> struct cpuidle_state *idle_state;
> int ret = 0;
>
> @@ -1775,20 +1775,20 @@ int pm_genpd_detach_cpuidle(struct generic_pm_domain *genpd)
>
> genpd_acquire_lock(genpd);
>
> - cpu_data = genpd->cpu_data;
> - if (!cpu_data) {
> + pm_cpu_data = genpd->pm_cpu_data;
> + if (!pm_cpu_data) {
> ret = -ENODEV;
> goto out;
> }
> - idle_state = cpu_data->idle_state;
> + idle_state = pm_cpu_data->idle_state;
> if (!idle_state->disabled) {
> ret = -EAGAIN;
> goto out;
> }
> - idle_state->exit_latency = cpu_data->saved_exit_latency;
> + idle_state->exit_latency = pm_cpu_data->saved_exit_latency;
> cpuidle_driver_unref();
> - genpd->cpu_data = NULL;
> - kfree(cpu_data);
> + genpd->pm_cpu_data = NULL;
> + kfree(pm_cpu_data);
>
> out:
> genpd_release_lock(genpd);
> diff --git a/include/linux/pm_domain.h b/include/linux/pm_domain.h
> index 9004743..a73b825 100644
> --- a/include/linux/pm_domain.h
> +++ b/include/linux/pm_domain.h
> @@ -71,7 +71,7 @@ struct generic_pm_domain {
> s64 max_off_time_ns; /* Maximum allowed "suspended" time. */
> bool max_off_time_changed;
> bool cached_power_down_ok;
> - struct gpd_cpu_data *cpu_data;
> + struct gpd_cpu_data *pm_cpu_data;
> void (*attach_dev)(struct device *dev);
> void (*detach_dev)(struct device *dev);
> };
>
--
Chen Gang
Open, share, and attitude like air, water, and life which God blessed
next prev parent reply other threads:[~2014-10-04 14:14 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-04 14:19 [PATCH] drivers: base: power: domain: Use 'pm_cpu_data' instead of 'cpu_data' for compiling break Chen Gang
2014-10-04 14:20 ` Chen Gang [this message]
2014-10-04 16:00 ` Greg KH
2014-10-05 1:13 ` Chen Gang
2014-10-05 1:23 ` Greg KH
2014-10-05 2:11 ` Chen Gang
2014-10-05 1:31 ` Chen Gang
2014-10-05 2:42 ` Randy Dunlap
2014-10-05 2:57 ` Chen Gang
2014-10-05 21:32 ` Rafael J. Wysocki
2014-10-05 23:55 ` Chen Gang
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=54300232.8020809@gmail.com \
--to=gang.chen.5i5j@gmail.com \
--cc=geert+renesas@glider.be \
--cc=gregkh@linuxfoundation.org \
--cc=khilman@linaro.org \
--cc=len.brown@intel.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-pm@vger.kernel.org \
--cc=pavel@ucw.cz \
--cc=richard@nod.at \
--cc=rjw@rjwysocki.net \
--cc=tomasz.figa@gmail.com \
--cc=ulf.hansson@linaro.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.