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From: Chris Wilson <chris@chris-wilson.co.uk>
To: Ville Syrjala <ville.syrjala@linux.intel.com>,
	intel-gfx@lists.freedesktop.org
Subject: Re: [PATCH 5/6] drm/i915/sdvo: Reduce the size of the on stack buffers
Date: Wed, 19 Jun 2019 19:21:48 +0100	[thread overview]
Message-ID: <156096850888.664.14223582224163086211@skylake-alporthouse-com> (raw)
In-Reply-To: <20190619180312.31817-5-ville.syrjala@linux.intel.com>

Quoting Ville Syrjala (2019-06-19 19:03:11)
> From: Ville Syrjälä <ville.syrjala@linux.intel.com>
> 
> The strings we want to print to the on stack buffers should
> be no more than
> 8 * 3 + strlen("(GET_SCALED_HDTV_RESOLUTION_SUPPORT)") + 1 = 61
> bytes. So let's shrink the buffers down to 64 bytes.
> 

max args_len does seem to 8, and it gets padded out to 8.

> Also switch the BUG_ON()s to WARN_ON()s if I made a mistake in
> my arithmentic.

With the command name macro, could it not do some thing like
BUILD_BUG_ON(sizeof(#cmd) > DBG_LEN) ?
-Chris
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  reply	other threads:[~2019-06-19 18:21 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-06-19 18:03 [PATCH 1/6] drm/i915/sdvo: Fix handling if zero hbuf size Ville Syrjala
2019-06-19 18:03 ` [PATCH 2/6] drm/i915/sdvo: Use named initializers for the SDVO command names Ville Syrjala
2019-06-19 18:08   ` Chris Wilson
2019-06-19 18:03 ` [PATCH 3/6] drm/i915/sdvo: Remove duplicate SET_INPUT_TIMINGS_PART1 cmd name string Ville Syrjala
2019-06-19 18:11   ` Chris Wilson
2019-06-19 18:03 ` [PATCH 4/6] drm/i915/sdvo: Shrink sdvo_cmd_names[] strings Ville Syrjala
2019-06-19 18:13   ` Chris Wilson
2019-06-19 18:03 ` [PATCH 5/6] drm/i915/sdvo: Reduce the size of the on stack buffers Ville Syrjala
2019-06-19 18:21   ` Chris Wilson [this message]
2019-06-24 16:40     ` Ville Syrjälä
2019-06-19 18:03 ` [PATCH 6/6] drm/i915/sdvo: Add helpers to get the cmd/status string Ville Syrjala
2019-06-19 18:15   ` Chris Wilson
2019-06-19 18:32 ` ✗ Fi.CI.SPARSE: warning for series starting with [1/6] drm/i915/sdvo: Fix handling if zero hbuf size Patchwork
2019-06-19 18:52 ` ✓ Fi.CI.BAT: success " Patchwork
2019-06-20 13:39 ` ✗ Fi.CI.IGT: failure " Patchwork
2019-07-10 13:37 ` [PATCH 1/6] " Imre Deak

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