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Groups > linux.kernel > #1430189
| From | Arnaldo Carvalho de Melo <acme@kernel.org> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH 23/27] perf script: Print sample flags more nicely |
| Date | 2016-06-23 23:30 +0200 |
| Message-ID | <rNkmf-7qp-51@gated-at.bofh.it> (permalink) |
| References | <rNkmd-7qp-3@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
From: Adrian Hunter <adrian.hunter@intel.com>
The flags field is synthesized and may have a value when Instruction
Trace decoding. The flags are "bcrosyiABEx" which stand for branch,
call, return, conditional, system, asynchronous, interrupt, transaction
abort, trace begin, trace end, and in transaction, respectively.
Change the display so that known combinations of flags are printed more
nicely e.g.: "call" for "bc", "return" for "br", "jcc" for "bo", "jmp"
for "b", "int" for "bci", "iret" for "bri", "syscall" for "bcs",
"sysret" for "brs", "async" for "by", "hw int" for "bcyi", "tx abrt" for
"bA", "tr strt" for "bB", "tr end" for "bE".
However the "x" flag will be displayed separately in those cases e.g.
"jcc (x)" for a condition branch within a transaction.
Example:
perf record -e intel_pt//u ls
perf script --ns -F comm,cpu,pid,tid,time,ip,addr,sym,dso,symoff,flags
...
ls 3689/3689 [001] 2062.020965237: jcc 7f06a958847a _dl_sysdep_start+0xfa (/lib/x86_64-linux-gnu/ld-2.19.so) => 7f06a9588450 _dl_sysdep_start+0xd0 (/lib/x86_64-linux-gnu/ld-2.19.so)
ls 3689/3689 [001] 2062.020965237: jmp 7f06a9588461 _dl_sysdep_start+0xe1 (/lib/x86_64-linux-gnu/ld-2.19.so) => 7f06a95885a0 _dl_sysdep_start+0x220 (/lib/x86_64-linux-gnu/ld-2.19.so)
ls 3689/3689 [001] 2062.020965237: jmp 7f06a95885a4 _dl_sysdep_start+0x224 (/lib/x86_64-linux-gnu/ld-2.19.so) => 7f06a9588470 _dl_sysdep_start+0xf0 (/lib/x86_64-linux-gnu/ld-2.19.so)
ls 3689/3689 [001] 2062.020965904: call 7f06a95884c3 _dl_sysdep_start+0x143 (/lib/x86_64-linux-gnu/ld-2.19.so) => 7f06a9589140 brk+0x0 (/lib/x86_64-linux-gnu/ld-2.19.so)
ls 3689/3689 [001] 2062.020965904: syscall 7f06a958914a brk+0xa (/lib/x86_64-linux-gnu/ld-2.19.so) => 0 [unknown] ([unknown])
ls 3689/3689 [001] 2062.020966237: tr strt 0 [unknown] ([unknown]) => 7f06a958914c brk+0xc (/lib/x86_64-linux-gnu/ld-2.19.so)
ls 3689/3689 [001] 2062.020966237: return 7f06a9589165 brk+0x25 (/lib/x86_64-linux-gnu/ld-2.19.so) => 7f06a95884c8 _dl_sysdep_start+0x148 (/lib/x86_64-linux-gnu/ld-2.19.so)
ls 3689/3689 [001] 2062.020966237: jcc 7f06a95884d7 _dl_sysdep_start+0x157 (/lib/x86_64-linux-gnu/ld-2.19.so) => 7f06a95885f0 _dl_sysdep_start+0x270 (/lib/x86_64-linux-gnu/ld-2.19.so)
ls 3689/3689 [001] 2062.020966237: call 7f06a95885f0 _dl_sysdep_start+0x270 (/lib/x86_64-linux-gnu/ld-2.19.so) => 7f06a958ac50 strlen+0x0 (/lib/x86_64-linux-gnu/ld-2.19.so)
ls 3689/3689 [001] 2062.020966237: jcc 7f06a958ac6e strlen+0x1e (/lib/x86_64-linux-gnu/ld-2.19.so) => 7f06a958ac60 strlen+0x10 (/lib/x86_64-linux-gnu/ld-2.19.so)
...
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Andi Kleen <ak@linux.intel.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/r/1466689258-28493-2-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/Documentation/perf-script.txt | 7 ++++++-
tools/perf/builtin-script.c | 35 +++++++++++++++++++++++++++++++-
2 files changed, 40 insertions(+), 2 deletions(-)
diff --git a/tools/perf/Documentation/perf-script.txt b/tools/perf/Documentation/perf-script.txt
index 4f34379ebd77..a46030d8962d 100644
--- a/tools/perf/Documentation/perf-script.txt
+++ b/tools/perf/Documentation/perf-script.txt
@@ -170,7 +170,12 @@ OPTIONS
Trace decoding. The flags are "bcrosyiABEx" which stand for branch,
call, return, conditional, system, asynchronous, interrupt,
transaction abort, trace begin, trace end, and in transaction,
- respectively.
+ respectively. Known combinations of flags are printed more nicely e.g.
+ "call" for "bc", "return" for "br", "jcc" for "bo", "jmp" for "b",
+ "int" for "bci", "iret" for "bri", "syscall" for "bcs", "sysret" for "brs",
+ "async" for "by", "hw int" for "bcyi", "tx abrt" for "bA", "tr strt" for "bB",
+ "tr end" for "bE". However the "x" flag will be display separately in those
+ cases e.g. "jcc (x)" for a condition branch within a transaction.
Finally, a user may not set fields to none for all event types.
i.e., -F "" is not allowed.
diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c
index 0e18e06e7fd5..56b2fb8135ce 100644
--- a/tools/perf/builtin-script.c
+++ b/tools/perf/builtin-script.c
@@ -606,13 +606,42 @@ static void print_sample_bts(struct perf_sample *sample,
printf("\n");
}
+static struct {
+ u32 flags;
+ const char *name;
+} sample_flags[] = {
+ {PERF_IP_FLAG_BRANCH | PERF_IP_FLAG_CALL, "call"},
+ {PERF_IP_FLAG_BRANCH | PERF_IP_FLAG_RETURN, "return"},
+ {PERF_IP_FLAG_BRANCH | PERF_IP_FLAG_CONDITIONAL, "jcc"},
+ {PERF_IP_FLAG_BRANCH, "jmp"},
+ {PERF_IP_FLAG_BRANCH | PERF_IP_FLAG_CALL | PERF_IP_FLAG_INTERRUPT, "int"},
+ {PERF_IP_FLAG_BRANCH | PERF_IP_FLAG_RETURN | PERF_IP_FLAG_INTERRUPT, "iret"},
+ {PERF_IP_FLAG_BRANCH | PERF_IP_FLAG_CALL | PERF_IP_FLAG_SYSCALLRET, "syscall"},
+ {PERF_IP_FLAG_BRANCH | PERF_IP_FLAG_RETURN | PERF_IP_FLAG_SYSCALLRET, "sysret"},
+ {PERF_IP_FLAG_BRANCH | PERF_IP_FLAG_ASYNC, "async"},
+ {PERF_IP_FLAG_BRANCH | PERF_IP_FLAG_CALL | PERF_IP_FLAG_ASYNC | PERF_IP_FLAG_INTERRUPT, "hw int"},
+ {PERF_IP_FLAG_BRANCH | PERF_IP_FLAG_TX_ABORT, "tx abrt"},
+ {PERF_IP_FLAG_BRANCH | PERF_IP_FLAG_TRACE_BEGIN, "tr strt"},
+ {PERF_IP_FLAG_BRANCH | PERF_IP_FLAG_TRACE_END, "tr end"},
+ {0, NULL}
+};
+
static void print_sample_flags(u32 flags)
{
const char *chars = PERF_IP_FLAG_CHARS;
const int n = strlen(PERF_IP_FLAG_CHARS);
+ bool in_tx = flags & PERF_IP_FLAG_IN_TX;
+ const char *name = NULL;
char str[33];
int i, pos = 0;
+ for (i = 0; sample_flags[i].name ; i++) {
+ if (sample_flags[i].flags == (flags & ~PERF_IP_FLAG_IN_TX)) {
+ name = sample_flags[i].name;
+ break;
+ }
+ }
+
for (i = 0; i < n; i++, flags >>= 1) {
if (flags & 1)
str[pos++] = chars[i];
@@ -622,7 +651,11 @@ static void print_sample_flags(u32 flags)
str[pos++] = '?';
}
str[pos] = 0;
- printf(" %-4s ", str);
+
+ if (name)
+ printf(" %-7s%4s ", name, in_tx ? "(x)" : "");
+ else
+ printf(" %-11s ", str);
}
struct printer_data {
--
2.5.5
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[GIT PULL 00/27] perf/core improvements and fixes Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-06-23 23:30 +0200 [PATCH 26/27] perf config: Introduce new init() and exit() Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-06-23 23:30 +0200 [PATCH 23/27] perf script: Print sample flags more nicely Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-06-23 23:30 +0200 [PATCH 05/27] perf hists browser: Move horizontal scroll init to new() Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-06-23 23:40 +0200 [PATCH 07/27] perf hists browser: Introduce init() Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-06-23 23:40 +0200 [PATCH 06/27] perf hists browser: Introduce perf_evsel_browser constructor Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-06-23 23:40 +0200 [PATCH 02/27] perf hists browser: Move hist_browser into header file Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-06-23 23:40 +0200 [PATCH 04/27] perf hists browser: Introduce struct hist_browser title callback Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-06-23 23:40 +0200 [PATCH 11/27] perf tests time-to-tsc: No need to disable an event before deleting it Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-06-23 23:40 +0200 [PATCH 03/27] perf hists browser: Make (new|delete|run) public Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-06-23 23:40 +0200 [PATCH 24/27] perf auxtrace: Add option to feed branches to the thread stack Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-06-23 23:40 +0200 Re: [GIT PULL 00/27] perf/core improvements and fixes Ingo Molnar <mingo@kernel.org> - 2016-06-26 12:50 +0200
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