| Message ID | 20221129191942.138244-13-paul@crapouillou.net (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | None | expand |
On Tue, Nov 29, 2022 at 07:19:42PM +0000, Paul Cercueil wrote: > Instead of defining two versions of intel_sysfs_rc6_init(), one for each > value of CONFIG_PM, add a check on !IS_ENABLED(CONFIG_PM) early in the > function. This will allow the compiler to automatically drop the dead > code when CONFIG_PM is disabled, without having to use #ifdef guards. > > This has the advantage of always compiling these functions in, > independently of any Kconfig option. Thanks to that, bugs and other > regressions are subsequently easier to catch. > > Signed-off-by: Paul Cercueil <paul@crapouillou.net> > --- > Cc: Jani Nikula <jani.nikula@linux.intel.com> > Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> > Cc: Rodrigo Vivi <rodrigo.vivi@intel.com> Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com> > Cc: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com> > Cc: intel-gfx@lists.freedesktop.org > --- > drivers/gpu/drm/i915/gt/intel_gt_sysfs_pm.c | 8 +------- > 1 file changed, 1 insertion(+), 7 deletions(-) > > diff --git a/drivers/gpu/drm/i915/gt/intel_gt_sysfs_pm.c b/drivers/gpu/drm/i915/gt/intel_gt_sysfs_pm.c > index cf71305ad586..09b9365ededd 100644 > --- a/drivers/gpu/drm/i915/gt/intel_gt_sysfs_pm.c > +++ b/drivers/gpu/drm/i915/gt/intel_gt_sysfs_pm.c > @@ -164,7 +164,6 @@ sysfs_gt_attribute_r_func(struct kobject *kobj, struct attribute *attr, > NULL); \ > INTEL_GT_ATTR_RO(_name) > > -#ifdef CONFIG_PM > static u32 get_residency(struct intel_gt *gt, enum intel_rc6_res_type id) > { > intel_wakeref_t wakeref; > @@ -300,7 +299,7 @@ static void intel_sysfs_rc6_init(struct intel_gt *gt, struct kobject *kobj) > { > int ret; > > - if (!HAS_RC6(gt->i915)) > + if (!IS_ENABLED(CONFIG_PM) || !HAS_RC6(gt->i915)) > return; > > ret = __intel_gt_sysfs_create_group(kobj, rc6_attr_group); > @@ -329,11 +328,6 @@ static void intel_sysfs_rc6_init(struct intel_gt *gt, struct kobject *kobj) > gt->info.id, ERR_PTR(ret)); > } > } > -#else > -static void intel_sysfs_rc6_init(struct intel_gt *gt, struct kobject *kobj) > -{ > -} > -#endif /* CONFIG_PM */ > > static u32 __act_freq_mhz_show(struct intel_gt *gt) > { > -- > 2.35.1 >
diff --git a/drivers/gpu/drm/i915/gt/intel_gt_sysfs_pm.c b/drivers/gpu/drm/i915/gt/intel_gt_sysfs_pm.c index cf71305ad586..09b9365ededd 100644 --- a/drivers/gpu/drm/i915/gt/intel_gt_sysfs_pm.c +++ b/drivers/gpu/drm/i915/gt/intel_gt_sysfs_pm.c @@ -164,7 +164,6 @@ sysfs_gt_attribute_r_func(struct kobject *kobj, struct attribute *attr, NULL); \ INTEL_GT_ATTR_RO(_name) -#ifdef CONFIG_PM static u32 get_residency(struct intel_gt *gt, enum intel_rc6_res_type id) { intel_wakeref_t wakeref; @@ -300,7 +299,7 @@ static void intel_sysfs_rc6_init(struct intel_gt *gt, struct kobject *kobj) { int ret; - if (!HAS_RC6(gt->i915)) + if (!IS_ENABLED(CONFIG_PM) || !HAS_RC6(gt->i915)) return; ret = __intel_gt_sysfs_create_group(kobj, rc6_attr_group); @@ -329,11 +328,6 @@ static void intel_sysfs_rc6_init(struct intel_gt *gt, struct kobject *kobj) gt->info.id, ERR_PTR(ret)); } } -#else -static void intel_sysfs_rc6_init(struct intel_gt *gt, struct kobject *kobj) -{ -} -#endif /* CONFIG_PM */ static u32 __act_freq_mhz_show(struct intel_gt *gt) {
Instead of defining two versions of intel_sysfs_rc6_init(), one for each value of CONFIG_PM, add a check on !IS_ENABLED(CONFIG_PM) early in the function. This will allow the compiler to automatically drop the dead code when CONFIG_PM is disabled, without having to use #ifdef guards. This has the advantage of always compiling these functions in, independently of any Kconfig option. Thanks to that, bugs and other regressions are subsequently easier to catch. Signed-off-by: Paul Cercueil <paul@crapouillou.net> --- Cc: Jani Nikula <jani.nikula@linux.intel.com> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Cc: Rodrigo Vivi <rodrigo.vivi@intel.com> Cc: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com> Cc: intel-gfx@lists.freedesktop.org --- drivers/gpu/drm/i915/gt/intel_gt_sysfs_pm.c | 8 +------- 1 file changed, 1 insertion(+), 7 deletions(-)