Re: [PATCH 2/2] tracing: Resize tgid_map to PID_MAX_LIMIT, not PID_MAX_DEFAULT

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On Wed, 30 Jun 2021 19:11:45 -0400
Steven Rostedt <rostedt@xxxxxxxxxxx> wrote:

> On Wed, 30 Jun 2021 18:34:11 -0400
> Joel Fernandes <joelaf@xxxxxxxxxx> wrote:
> 
> > > Anyway, I'll wait to hear what Joel says on this. If he thinks this is
> > > worth 16M of memory when enabled, I may take it.    
> > 
> > I am not a huge fan of the 16M, in Android we enable this feature on
> > all devices. Low end Android devices traced in the field are sometimes
> > 1 GB and the added memory pressure may be unwelcome. Very least, maybe
> > make it optional only for folks who increase pid_max?  
> 
> Yeah, can we just set it to the size of pid_max, at whatever it is set
> to?

Can you send a V2 with this update and address Joel's comments to patch 1,
and get it to me today? I plan on sending Linus a pull request
tomorrow, which means I have to kick off my tests tonight for what I
want to send.

-- Steve



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