diff options
author | Steven Rostedt | 2010-11-12 22:32:11 -0500 |
---|---|---|
committer | Steven Rostedt | 2010-11-19 10:18:47 -0500 |
commit | 042957801626465492b9428860de39a3cb2a8219 (patch) | |
tree | b0997862babd5e474c500b1b4c522f3a03842106 /arch/x86/Kconfig.debug | |
parent | 45677454dd6d128608117abe7dcd2bdfdd7cdf72 (diff) |
tracing/events: Show real number in array fields
Currently we have in something like the sched_switch event:
field:char prev_comm[TASK_COMM_LEN]; offset:12; size:16; signed:1;
When a userspace tool such as perf tries to parse this, the
TASK_COMM_LEN is meaningless. This is done because the TRACE_EVENT() macro
simply uses a #len to show the string of the length. When the length is
an enum, we get a string that means nothing for tools.
By adding a static buffer and a mutex to protect it, we can store the
string into that buffer with snprintf and show the actual number.
Now we get:
field:char prev_comm[16]; offset:12; size:16; signed:1;
Something much more useful.
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'arch/x86/Kconfig.debug')
0 files changed, 0 insertions, 0 deletions