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authorXiao Guangrong <xiaoguangrong@cn.fujitsu.com>2009-07-01 04:50:25 -0400
committerIngo Molnar <mingo@elte.hu>2009-07-02 02:51:13 -0400
commite1af3aec3e2e7d21d4b3054323779d478c19d907 (patch)
tree338ef5a081fb66a6463ab4c1e882d7870ca154ac /include/linux/if_pppol2tp.h
parent4a2bb6fcc80e6330ca2f2393e98605052cc7780b (diff)
tracing: Fix trace_print_seq()
We will lose something if trace_seq->buffer[0] is 0, because the copy length is calculated by strlen() in seq_puts(), so using seq_write() instead of seq_puts(). There have a example: after reboot: # echo kmemtrace > current_tracer # echo 0 > options/kmem_minimalistic # cat trace # tracer: kmemtrace # # Nothing is exported, because the first byte of trace_seq->buffer[ ] is KMEMTRACE_USER_ALLOC. ( the value of KMEMTRACE_USER_ALLOC is zero, seeing kmemtrace_print_alloc_user() in kernel/trace/kmemtrace.c) Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> Acked-by: Frederic Weisbecker <fweisbec@gmail.com> Acked-by: Pekka Enberg <penberg@cs.helsinki.fi> Acked-by: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro> Cc: Steven Rostedt <rostedt@goodmis.org> LKML-Reference: <4A4B2351.5010300@cn.fujitsu.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/linux/if_pppol2tp.h')
0 files changed, 0 insertions, 0 deletions