Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]


Groups > linux.kernel > #1624540

Re: [PATCH] soc/tegra: pmc: Don't allocate struct tegra_powergate on stack

From Viresh Kumar <viresh.kumar@linaro.org>
Newsgroups linux.kernel
Subject Re: [PATCH] soc/tegra: pmc: Don't allocate struct tegra_powergate on stack
Date 2017-04-17 08:00 +0200
Message-ID <tx7RD-5kx-1@gated-at.bofh.it> (permalink)
References <tnkGt-7kb-7@gated-at.bofh.it> <tnpmO-24D-9@gated-at.bofh.it> <tnpwu-28I-17@gated-at.bofh.it>
Organization linux.* mail to news gateway

Show all headers | View raw


On 21-03-17, 16:09, Viresh Kumar wrote:
> On 21-03-17, 10:37, Jon Hunter wrote:
> > 
> > On 21/03/17 05:24, Viresh Kumar wrote:
> > > The size of the struct tegra_powergate is quite big and if any more
> > > fields are added to the internal genpd structure, following warnings are
> > > thrown:
> > > 
> > > drivers/soc/tegra/pmc.c:577:1: warning: the frame size of 1176 bytes is larger than 1024 bytes [-Wframe-larger-than=]
> > 
> > Hmmm ... AFAICT the size of the tegra_powergate struct is 312 bytes
> > (based upon next-20170321) and so it looks like something massive needs
> > to be added to the genpd struct to blow this up to over 1024 bytes. Are
> > there some genpd changes in-flight that are causing this?
> 
> https://marc.info/?l=linux-kernel&m=149000247329743&w=2
> 
> This is up for discussion right now though and we don't know if it
> will surely get merged or not.

@Jon: Regardless of the above series, do you want this patch to be merged as it
will still be better to avoid keeping large structures on stack.

Else I would be required to keep this in my above series from now on.

-- 
viresh

Back to linux.kernel | Previous | NextNext in thread | Find similar | Unroll thread


Thread

Re: [PATCH] soc/tegra: pmc: Don't allocate struct tegra_powergate on  stack Viresh Kumar <viresh.kumar@linaro.org> - 2017-04-17 08:00 +0200
  Re: [PATCH] soc/tegra: pmc: Don't allocate struct tegra_powergate on  stack Jon Hunter <jonathanh@nvidia.com> - 2017-04-24 13:00 +0200

csiph-web