linux-ext4 - Re: [PATCH 1/2] ext4: fix symbolic enum printing in trace output

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Date:   Sat, 25 Jan 2020 02:03:18 -0500
From:   "Theodore Y. Ts'o" <tytso@....edu>
To:     Dmitry Monakhov <dmonakhov@...il.com>
Cc:     linux-ext4@...r.kernel.org, darrick.wong@...cle.com
Subject: Re: [PATCH 1/2] ext4: fix symbolic enum printing in trace output

On Thu, Nov 14, 2019 at 08:01:46PM +0000, Dmitry Monakhov wrote:
> Trace's macro __print_flags() produce raw event's decraration w/o knowing actual
> flags value
> 
> cat /sys/kernel/debug/tracing/events/ext4/ext4_ext_map_blocks_exit/format
> ..
> __print_flags(REC->mflags, "", { (1 << BH_New),
> 
> For that reason we have to explicitly define it via special macro TRACE_DEFINE_ENUM()
> Also add missed EXTENT_STATUS_REFERENCED flag.
> 
> #Before patch
> ext4:ext4_ext_map_blocks_exit: dev 253,0 ino 2 flags  lblk 0 pblk 4177 len 1 mflags 0x20 ret 1
> ext4:ext4_ext_map_blocks_exit: dev 253,0 ino 12 flags CREATE lblk 0 pblk 34304 len 1 mflags 0x60 ret 1
> 
> #With patch
> ext4:ext4_ext_map_blocks_exit: dev 253,0 ino 2 flags  lblk 0 pblk 4177 len 1 mflags M ret 1
> ext4:ext4_ext_map_blocks_exit: dev 253,0 ino 12 flags CREATE lblk 0 pblk 34816 len 1 mflags NM ret 1
> 
> Signed-off-by: Dmitry Monakhov <dmonakhov@...il.com>

Thanks, applied.

					- Ted