| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-Id: <1447036395-18911-7-git-send-email-treeze.taeung@gmail.com>
Date: Mon, 9 Nov 2015 11:32:59 +0900
From: Taeung Song <treeze.taeung@...il.com>
To: Arnaldo Carvalho de Melo <acme@...nel.org>
Cc: linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...hat.com>,
Taeung Song <treeze.taeung@...il.com>,
Namhyung Kim <namhyung@...nel.org>,
Jiri Olsa <jolsa@...hat.com>
Subject: [PATCH v10 06/22] perf config: Document variables for 'annotate' section in man page
Explain 'annotate' section and its variables.
'hide_src_code', 'use_offset', 'jump_arrows' and 'show_nr_jumps'.
Cc: Namhyung Kim <namhyung@...nel.org>
Cc: Jiri Olsa <jolsa@...hat.com>
Signed-off-by: Taeung Song <treeze.taeung@...il.com>
---
tools/perf/Documentation/perf-config.txt | 76 ++++++++++++++++++++++++++++++++
1 file changed, 76 insertions(+)
diff --git a/tools/perf/Documentation/perf-config.txt b/tools/perf/Documentation/perf-config.txt
index ee98fca..11fd4b2 100644
--- a/tools/perf/Documentation/perf-config.txt
+++ b/tools/perf/Documentation/perf-config.txt
@@ -166,6 +166,82 @@ buildid.*::
cache location, or to disable it altogether. If you want to disable it,
set buildid.dir to /dev/null. The default is $HOME/.debug
+annotate.*::
+ There're options which work with a 'annotate' sub-command.
+ These are in control of addresses, jump function, source code
+ in lines of assembly code from a specific program.
+
+ annotate.hide_src_code::
+ If a program which is analyzed has source code,
+ this option lets 'annotate' print a list of assembly code with the source code.
+ For example, let's see a part of a program. There're four lines.
+ If this option is 'true', they can be printed
+ without source code from a program as below.
+
+ │ push %rbp
+ │ mov %rsp,%rbp
+ │ sub $0x10,%rsp
+ │ mov (%rdi),%rdx
+
+ But if this option is 'false', source code of the part
+ can be also printed as below.
+
+ │ struct rb_node *rb_next(const struct rb_node *node)
+ │ {
+ │ push %rbp
+ │ mov %rsp,%rbp
+ │ sub $0x10,%rsp
+ │ struct rb_node *parent;
+ │
+ │ if (RB_EMPTY_NODE(node))
+ │ mov (%rdi),%rdx
+ │ return n;
+
+ annotate.use_offset::
+ Basing on a first address of a loaded function, offset can be used.
+ Instead of using original addresses of assembly code,
+ addresses subtracted from a base address can be printed.
+ Let's illustrate a example.
+ If a base address is 0XFFFFFFFF81624d50 as below,
+
+ ffffffff81624d50 <load0>
+
+ a address on assembly code has a specific absolute address as below
+
+ ffffffff816250b8:│ mov 0x8(%r14),%rdi
+
+ but if use_offset is 'true', a address subtracted from a base address is printed.
+ The default is true. This option is only applied to TUI.
+
+ 368:│ mov 0x8(%r14),%rdi
+
+ annotate.jump_arrows::
+ There can be jump instruction among assembly code.
+ Depending on a boolean value of jump_arrows,
+ arrows can be printed or not which represent
+ where do the instruction jump into as below.
+
+ │ ┌──jmp 1333
+ │ │ xchg %ax,%ax
+ │1330:│ mov %r15,%r10
+ │1333:└─→cmp %r15,%r14
+
+ If jump_arrow is 'false', the arrows isn't printed as below.
+
+ │ ↓ jmp 1333
+ │ xchg %ax,%ax
+ │1330: mov %r15,%r10
+ │1333: cmp %r15,%r14
+
+ annotate.show_nr_jumps::
+ Let's see a part of assembly code.
+
+ │1382: movb $0x1,-0x270(%rbp)
+
+ If use this, the number of branches branching to that address can be printed as below.
+
+ │1 1382: movb $0x1,-0x270(%rbp)
+
SEE ALSO
--------
linkperf:perf[1]
--
1.9.1
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists