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tracing: fix multiple use of __print_flags and __print_symbolic

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Here is an updated patch to include the extra call to
trace_seq_init() as requested. This is vs. the latest
-tip tree and fixes the use of multiple __print_flags
and __print_symbolic in a single tracer. Also tested
to ensure its working now:

mount.gfs2-2534  [000]   235.850587: gfs2_glock_queue: 8.7 glock 1:2 dequeue PR
mount.gfs2-2534  [000]   235.850591: gfs2_demote_rq: 8.7 glock 1:0 demote EX to NL flags:DI
mount.gfs2-2534  [000]   235.850591: gfs2_glock_queue: 8.7 glock 1:0 dequeue EX
glock_workqueue-2529  [000]   235.850666: gfs2_glock_state_change: 8.7 glock 1:0 state EX => NL tgt:NL dmt:NL flags:lDpI
glock_workqueue-2529  [000]   235.850672: gfs2_glock_put: 8.7 glock 1:0 state NL => IV flags:I

Signed-off-by: Steven Whitehouse <[email protected]>
LKML-Reference: <[email protected]>
Signed-off-by: Steven Rostedt <[email protected]>
This commit is contained in:
Steven Whitehouse 2009-06-03 14:52:03 +01:00 • committed by Steven Rostedt
commit 56d8bd3f0b
2 changed files with 6 additions and 6 deletions
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10
kernel/trace/trace_output.c
View file

@ -223,10 +223,9 @@ ftrace_print_flags_seq(struct trace_seq *p, const char *delim,
{
unsigned long mask;
const char *str;
const char *ret = p->buffer + p->len;
int i;
trace_seq_init(p);
for (i = 0; flag_array[i].name && flags; i++) {
mask = flag_array[i].mask;
@ -249,7 +248,7 @@ ftrace_print_flags_seq(struct trace_seq *p, const char *delim,
trace_seq_putc(p, 0);
return p->buffer;
return ret;
}
EXPORT_SYMBOL(ftrace_print_flags_seq);
@ -258,8 +257,7 @@ ftrace_print_symbols_seq(struct trace_seq *p, unsigned long val,
const struct trace_print_flags *symbol_array)
{
int i;
trace_seq_init(p);
const char *ret = p->buffer + p->len;
for (i = 0; symbol_array[i].name; i++) {
@ -275,7 +273,7 @@ ftrace_print_symbols_seq(struct trace_seq *p, unsigned long val,
trace_seq_putc(p, 0);
return p->buffer;
return ret;
}
EXPORT_SYMBOL(ftrace_print_symbols_seq);