Commit-ID: 172bf02d564bdb6df8410f64720fa2c68e755d1a
Gitweb: https://git.kernel.org/tip/172bf02d564bdb6df8410f64720fa2c68e755d1a
Author: Arnaldo Carvalho de Melo <[email protected]>
AuthorDate: Mon, 7 Jan 2019 16:24:27 -0300
Committer: Arnaldo Carvalho de Melo <[email protected]>
CommitDate: Tue, 8 Jan 2019 13:28:12 -0300
perf trace: Fix ')' placement in "interrupted" syscall lines
When we get the sys_enter for a syscall we check if the last one is
still waiting for its matching sys_exit, if so we print this:
468.753 ( ): firefox/32382 poll(ufds: 0x7f3988d3dd00, nfds: 7,
timeout_msecs: 4294967295) ...
449.575 ( 0.004 ms): Softwar~cThrea/32434 futex(uaddr: 0x7f39a18a9b70, op:
WAKE|PRIVATE_FLAG, val: 1) = 0
At some point we'll get that poll sys_exit event and will print a "[continued]"
line.
While making the sizing of the alignment after the syscall arg list and
its result configurable, so that we can mimic strace, which uses a
smaller alingment by default, a bug was introduced where the closing
parens appeared before the syscall name and its arg list, fix it.
Fixes: 4b8a240ed5e0 ("perf trace: Add alignment spaces after the closing
parens")
Cc: Adrian Hunter <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Luis Cláudio Gonçalves <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Wang Nan <[email protected]>
Link: https://lkml.kernel.org/n/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
---
tools/perf/builtin-trace.c | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index adbf28183560..b8bf5d025563 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -1758,6 +1758,7 @@ static int trace__printf_interrupted_entry(struct trace
*trace)
{
struct thread_trace *ttrace;
size_t printed;
+ int len;
if (trace->failure_only || trace->current == NULL)
return 0;
@@ -1768,9 +1769,14 @@ static int trace__printf_interrupted_entry(struct trace
*trace)
return 0;
printed = trace__fprintf_entry_head(trace, trace->current, 0, false,
ttrace->entry_time, trace->output);
- printed += fprintf(trace->output, ")%-*s ...\n", trace->args_alignment,
ttrace->entry_str);
- ttrace->entry_pending = false;
+ printed += len = fprintf(trace->output, "%s)", ttrace->entry_str);
+
+ if (len < trace->args_alignment - 4)
+ printed += fprintf(trace->output, "%-*s", trace->args_alignment
- 4 - len, " ");
+ printed += fprintf(trace->output, " ...\n");
+
+ ttrace->entry_pending = false;
++trace->nr_events_printed;
return printed;
