Messages in this thread | | | Subject | Re: [PATCH] drm: Reduce object size of DRM_ERROR and DRM_DEBUG uses | From | Joe Perches <> | Date | Thu, 15 Mar 2018 08:17:53 -0700 |
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On Thu, 2018-03-15 at 17:05 +0200, Ville Syrjälä wrote: > On Thu, Mar 15, 2018 at 03:04:52PM +0100, Maarten Lankhorst wrote: > > Op 15-03-18 om 14:30 schreef Ville Syrjälä: > > > On Tue, Mar 13, 2018 at 03:02:15PM -0700, Joe Perches wrote: > > > > drm_printk is used for both DRM_ERROR and DRM_DEBUG with unnecessary > > > > arguments that can be removed by creating separate functins. > > > > > > > > Create specific functions for these calls to reduce x86/64 defconfig > > > > size by ~20k. > > > > > > > > Modify the existing macros to use the specific calls. > > > > > > > > new: > > > > $ size -t drivers/gpu/drm/built-in.a | tail -1 > > > > 1876562 44542 995 1922099 1d5433 (TOTALS) > > > > > > > > old: > > > > $ size -t drivers/gpu/drm/built-in.a | tail -1 > > > > 1897565 44542 995 1943102 1da63e (TOTALS) > > > > > > > > Miscellanea: > > > > > > > > o intel_display requires a change to use the specific calls. > > > > > > How much would we lose if we move the (drm_debug&FOO) outside the > > > functions again?
again?
> > > I'm somewhat concerned about all the function call > > > overhead when debugs aren't even enabled.
Perhaps better to have compilation elimination of the entire debug output instead.
I think you are discussing a different issue and this discussion should not block this patch as this patch has no impact other than code size reduction.
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