diff options
| author | Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> | 2011-09-04 16:08:59 +0100 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2012-02-17 16:34:08 -0200 |
| commit | a5a178e1ae0192e405830f1bba84548992124e88 (patch) | |
| tree | 0befc4ea59e523ba47d0f1b4ca2732bef64072e9 /tools/perf/util/trace-event-parse.c | |
| parent | 09bda4432a8a4d4db2b2b94697abc8d732a9ff73 (diff) | |
perf tools: Allow expressions in __print_symbolic() fields
The __print_symbolic() function takes a sequence of key-value pairs for
pretty-printing a constant. The new kvm:kvm_exit print fmt uses the
expression:
__print_symbolic(..., { 0x040 + 1, "DB excp" }, ...)
Currently only atoms are supported and this print fmt fails to parse.
This patch adds support for expressions instead of just atoms so that
0x040 + 1 is parsed successfully. Also add arg_num_eval() support for
the '+' operator.
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/r/1315148939-14313-1-git-send-email-stefanha@linux.vnet.ibm.com
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/trace-event-parse.c')
| -rw-r--r-- | tools/perf/util/trace-event-parse.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/tools/perf/util/trace-event-parse.c b/tools/perf/util/trace-event-parse.c index e0a4f652f289..a4088ced1e64 100644 --- a/tools/perf/util/trace-event-parse.c +++ b/tools/perf/util/trace-event-parse.c @@ -1423,6 +1423,11 @@ static long long arg_num_eval(struct print_arg *arg) die("unknown op '%s'", arg->op.op); } break; + case '+': + left = arg_num_eval(arg->op.left); + right = arg_num_eval(arg->op.right); + val = left + right; + break; default: die("unknown op '%s'", arg->op.op); } @@ -1483,6 +1488,13 @@ process_fields(struct event *event, struct print_flag_sym **list, char **tok) free_token(token); type = process_arg(event, arg, &token); + + if (type == EVENT_OP) + type = process_op(event, arg, &token); + + if (type == EVENT_ERROR) + goto out_free; + if (test_type_token(type, token, EVENT_DELIM, ",")) goto out_free; |