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author | Joe Perches <joe@perches.com> | 2012-09-12 20:11:29 -0700 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-09-17 06:08:30 -0700 |
commit | 798efc60e4276825df34af0e91ecbe0781237834 (patch) | |
tree | 8ccec7118a7a76f5731fecb8507643c44936eb49 /arch | |
parent | 8f949b9a7e0bac3a9c3c29dc27c476a87e21db3e (diff) | |
download | linux-798efc60e4276825df34af0e91ecbe0781237834.tar.gz linux-798efc60e4276825df34af0e91ecbe0781237834.tar.bz2 linux-798efc60e4276825df34af0e91ecbe0781237834.zip |
dev_dbg/dynamic_debug: Update to use printk_emit, optimize stack
commit c4e00daaa9
("driver-core: extend dev_printk() to pass structured data")
changed __dev_printk and broke dynamic-debug's ability to control the
dynamic prefix of dev_dbg(dev,..).
commit af7f2158fd
("drivers-core: make structured logging play nice with dynamic-debug")
made a minimal correction.
The current dynamic debug code uses up to 3 recursion levels via %pV.
This can consume quite a bit of stack. Directly call printk_emit to
reduce the recursion depth.
These changes include:
dev_dbg:
o Create and use function create_syslog_header to format the syslog
header for printk_emit uses.
o Call create_syslog_header and neaten __dev_printk
o Make __dev_printk static not global
o Remove include header declaration of __dev_printk
o Remove now unused EXPORT_SYMBOL() of __dev_printk
o Whitespace neatening
dynamic_dev_dbg:
o Remove KERN_DEBUG from dynamic_emit_prefix
o Call create_syslog_header and printk_emit
o Whitespace neatening
Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: David S. Miller <davem@davemloft.net>
Tested-by: Jim Cromie <jim.cromie@gmail.com>
Acked-by: Jason Baron <jbaron@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch')
0 files changed, 0 insertions, 0 deletions