mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-28 11:18:45 +07:00
dd2e18e9ac
When looking at PT or brstackinsn traces with 'perf script' it can be
very useful to see the source code. This adds a simple facility to print
them with 'perf script', if the information is available through dwarf
% perf record ...
% perf script -F insn,ip,sym,srccode
...
4004c6 main
5 for (i = 0; i < 10000000; i++)
4004cd main
5 for (i = 0; i < 10000000; i++)
4004c6 main
5 for (i = 0; i < 10000000; i++)
4004cd main
5 for (i = 0; i < 10000000; i++)
4004cd main
5 for (i = 0; i < 10000000; i++)
4004cd main
5 for (i = 0; i < 10000000; i++)
4004cd main
5 for (i = 0; i < 10000000; i++)
4004cd main
5 for (i = 0; i < 10000000; i++)
4004b3 main
6 v++;
% perf record -b ...
% perf script -F insn,ip,sym,srccode,brstackinsn
...
main+22:
0000000000400543 insn: e8 ca ff ff ff # PRED
|18 f1();
f1:
0000000000400512 insn: 55
|10 {
0000000000400513 insn: 48 89 e5
0000000000400516 insn: b8 00 00 00 00
|11 f2();
000000000040051b insn: e8 d6 ff ff ff # PRED
f2:
00000000004004f6 insn: 55
|5 {
00000000004004f7 insn: 48 89 e5
00000000004004fa insn: 8b 05 2c 0b 20 00
|6 c = a / b;
0000000000400500 insn: 8b 0d 2a 0b 20 00
0000000000400506 insn: 99
0000000000400507 insn: f7 f9
0000000000400509 insn: 89 05 29 0b 20 00
000000000040050f insn: 90
|7 }
0000000000400510 insn: 5d
0000000000400511 insn: c3 # PRED
f1+14:
0000000000400520 insn: b8 00 00 00 00
|12 f2();
0000000000400525 insn: e8 cc ff ff ff # PRED
f2:
00000000004004f6 insn: 55
|5 {
00000000004004f7 insn: 48 89 e5
00000000004004fa insn: 8b 05 2c 0b 20 00
|6 c = a / b;
Not supported for callchains currently, would need some layout changes
there.
Committer notes:
Fixed the build on Alpine Linux (3.4 .. 3.8) by addressing this
warning:
In file included from util/srccode.c:19:0:
/usr/include/sys/fcntl.h:1:2: error: #warning redirecting incorrect #include <sys/fcntl.h> to <fcntl.h> [-Werror=cpp]
#warning redirecting incorrect #include <sys/fcntl.h> to <fcntl.h>
^~~~~~~
cc1: all warnings being treated as errors
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Tested-by: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/r/20181204001848.24769-1-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
56 lines
1.7 KiB
C
56 lines
1.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef PERF_SRCLINE_H
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#define PERF_SRCLINE_H
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#include <linux/list.h>
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#include <linux/rbtree.h>
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#include <linux/types.h>
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struct dso;
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struct symbol;
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extern bool srcline_full_filename;
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char *get_srcline(struct dso *dso, u64 addr, struct symbol *sym,
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bool show_sym, bool show_addr, u64 ip);
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char *__get_srcline(struct dso *dso, u64 addr, struct symbol *sym,
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bool show_sym, bool show_addr, bool unwind_inlines,
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u64 ip);
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void free_srcline(char *srcline);
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char *get_srcline_split(struct dso *dso, u64 addr, unsigned *line);
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/* insert the srcline into the DSO, which will take ownership */
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void srcline__tree_insert(struct rb_root *tree, u64 addr, char *srcline);
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/* find previously inserted srcline */
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char *srcline__tree_find(struct rb_root *tree, u64 addr);
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/* delete all srclines within the tree */
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void srcline__tree_delete(struct rb_root *tree);
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#define SRCLINE_UNKNOWN ((char *) "??:0")
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struct inline_list {
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struct symbol *symbol;
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char *srcline;
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struct list_head list;
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};
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struct inline_node {
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u64 addr;
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struct list_head val;
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struct rb_node rb_node;
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};
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/* parse inlined frames for the given address */
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struct inline_node *dso__parse_addr_inlines(struct dso *dso, u64 addr,
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struct symbol *sym);
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/* free resources associated to the inline node list */
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void inline_node__delete(struct inline_node *node);
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/* insert the inline node list into the DSO, which will take ownership */
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void inlines__tree_insert(struct rb_root *tree, struct inline_node *inlines);
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/* find previously inserted inline node list */
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struct inline_node *inlines__tree_find(struct rb_root *tree, u64 addr);
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/* delete all nodes within the tree of inline_node s */
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void inlines__tree_delete(struct rb_root *tree);
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#endif /* PERF_SRCLINE_H */
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