AcoSail/kernel_optimize_test
8
0
Fork 0
forked from luck/tmp_suning_uos_patched
Code Pull Requests Activity

perf tools: Add gzip decompression support for kernel module

Browse Source 
Now my Archlinux box shows module symbols correctly.

Before:
  $ perf report --stdio
  Failed to open /tmp/perf-3477.map, continuing without symbols
  no symbols found in /usr/bin/date, maybe install a debug package?
  No kallsyms or vmlinux with build-id 7b4ea0a49ae2111925857099aaf05c3246ff33e0 was found
  [drm] with build id 7b4ea0a49ae2111925857099aaf05c3246ff33e0 not found, continuing without symbols
  No kallsyms or vmlinux with build-id edd931629094b660ca9dec09a1b635c8d87aa2ee was found
  [jbd2] with build id edd931629094b660ca9dec09a1b635c8d87aa2ee not found, continuing without symbols
  No kallsyms or vmlinux with build-id a7b1eada671c34933e5610bb920b2ca4945a82c3 was found
  [ext4] with build id a7b1eada671c34933e5610bb920b2ca4945a82c3 not found, continuing without symbols
  No kallsyms or vmlinux with build-id d69511fa3e5840e770336ef45b06c83fef8d74e3 was found
  [scsi_mod] with build id d69511fa3e5840e770336ef45b06c83fef8d74e3 not found, continuing without symbols
  No kallsyms or vmlinux with build-id af0430af13461af058770ee9b87afc07922c2e77 was found
  [libata] with build id af0430af13461af058770ee9b87afc07922c2e77 not found, continuing without symbols
  No kallsyms or vmlinux with build-id aaeedff8160ce631a5f0333591c6ff291201d29f was found
  [libahci] with build id aaeedff8160ce631a5f0333591c6ff291201d29f not found, continuing without symbols
  No kallsyms or vmlinux with build-id c57907712becaf662dc4981824bb372c0441d605 was found
  [mac80211] with build id c57907712becaf662dc4981824bb372c0441d605 not found, continuing without symbols
  No kallsyms or vmlinux with build-id e0589077cc0ec8c3e4c40eb9f2d9e69d236bee8f was found
  [iwldvm] with build id e0589077cc0ec8c3e4c40eb9f2d9e69d236bee8f not found, continuing without symbols
  No kallsyms or vmlinux with build-id 2d86086bf136bf374a2f029cf85a48194f9b950b was found
  [cfg80211] with build id 2d86086bf136bf374a2f029cf85a48194f9b950b not found, continuing without symbols
  No kallsyms or vmlinux with build-id 4493c48599bdb3d91d0f8db5150e0be33fdd9221 was found
  [iwlwifi] with build id 4493c48599bdb3d91d0f8db5150e0be33fdd9221 not found, continuing without symbols
  ...
  #
  # Overhead  Command          Shared Object            Symbol
  # ........  ...............  .......................  ........................................................
  #
       0.03%  swapper          [ext4]                   [k] 0x000000000000fe2e
       0.03%  swapper          [kernel.kallsyms]        [k] account_entity_enqueue
       0.03%  swapper          [ext4]                   [k] 0x000000000000fc2b
       0.03%  irq/50-iwlwifi   [iwlwifi]                [k] 0x000000000000200b
       0.03%  swapper          [kernel.kallsyms]        [k] ktime_add_safe
       0.03%  swapper          [kernel.kallsyms]        [k] elv_completed_request
       0.03%  swapper          [libata]                 [k] 0x0000000000003997
       0.03%  swapper          [libahci]                [k] 0x0000000000001f25
       0.03%  swapper          [kernel.kallsyms]        [k] rb_next
       0.03%  swapper          [kernel.kallsyms]        [k] blk_finish_request
       0.03%  swapper          [ext4]                   [k] 0x0000000000010248
       0.00%  perf             [kernel.kallsyms]        [k] native_write_msr_safe

After:
  $ perf report --stdio
  Failed to open /tmp/perf-3477.map, continuing without symbols
  no symbols found in /usr/bin/tr, maybe install a debug package?
  ...
  #
  # Overhead  Command          Shared Object                Symbol
  # ........  ...............  ...........................  ......................................................
  #

       0.04%  kworker/u16:3    [ext4]                       [k] ext4_read_block_bitmap
       0.03%  kworker/u16:0    [mac80211]                   [k] ieee80211_sta_reset_beacon_monitor
       0.02%  irq/50-iwlwifi   [mac80211]                   [k] ieee80211_get_bssid
       0.02%  firefox          [e1000e]                     [k] __ew32_prepare
       0.02%  swapper          [libahci]                    [k] ahci_handle_port_interrupt
       0.02%  emacs            libglib-2.0.so.0.4000.0      [.] g_mutex_unlock
       0.02%  swapper          [e1000e]                     [k] e1000_clean_tx_irq
       0.02%  dwm              [kernel.kallsyms]            [k] __schedule
       0.02%  gnome-terminal-  [vdso]                       [.] __vdso_clock_gettime
       0.02%  swapper          [e1000e]                     [k] e1000_alloc_rx_buffers
       0.02%  irq/50-iwlwifi   [mac80211]                   [k] ieee80211_rx
       0.01%  firefox          [vdso]                       [.] __vdso_gettimeofday
       0.01%  irq/50-iwlwifi   [iwlwifi]                    [k] iwl_pcie_rxq_restock.part.13

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/87h9yexshi.fsf@sejong.aot.lge.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Namhyung Kim 2014-10-31 16:51:38 +09:00 committed by Arnaldo Carvalho de Melo
parent c00c48fc6e
commit e92ce12ed6
8 changed files with 127 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
tools/perf/Makefile.perf
View File

@ -66,6 +66,9 @@ include config/utilities.mak
#
# Define NO_PERF_READ_VDSOX32 if you do not want to build perf-read-vdsox32
# for reading the x32 mode 32-bit compatibility VDSO in 64-bit mode
#
# Define NO_ZLIB if you do not want to support compressed kernel modules
ifeq ($(srctree),)
srctree := $(patsubst %/,%,$(dir $(shell pwd)))
@ -584,6 +587,10 @@ ifndef NO_LIBNUMA
BUILTIN_OBJS += $(OUTPUT)bench/numa.o
endif
ifndef NO_ZLIB
LIB_OBJS += $(OUTPUT)util/zlib.o
endif
ifdef ASCIIDOC8
export ASCIIDOC8
endif

15
tools/perf/config/Makefile
View File

@ -200,7 +200,8 @@ CORE_FEATURE_TESTS = \
libunwind \
stackprotector-all \
timerfd \
libdw-dwarf-unwind
libdw-dwarf-unwind \
zlib
LIB_FEATURE_TESTS = \
dwarf \
@ -214,7 +215,8 @@ LIB_FEATURE_TESTS = \
libpython \
libslang \
libunwind \
libdw-dwarf-unwind
libdw-dwarf-unwind \
zlib
VF_FEATURE_TESTS = \
backtrace \
@ -604,6 +606,15 @@ ifneq ($(filter -lbfd,$(EXTLIBS)),)
CFLAGS += -DHAVE_LIBBFD_SUPPORT
endif
ifndef NO_ZLIB
ifeq ($(feature-zlib), 1)
CFLAGS += -DHAVE_ZLIB_SUPPORT
EXTLIBS += -lz
else
NO_ZLIB := 1
endif
endif
ifndef NO_BACKTRACE
ifeq ($(feature-backtrace), 1)
CFLAGS += -DHAVE_BACKTRACE_SUPPORT

8
tools/perf/config/feature-checks/Makefile
View File

@ -29,7 +29,8 @@ FILES= \
test-timerfd.bin \
test-libdw-dwarf-unwind.bin \
test-compile-32.bin \
test-compile-x32.bin
test-compile-x32.bin \
test-zlib.bin
CC := $(CROSS_COMPILE)gcc -MD
PKG_CONFIG := $(CROSS_COMPILE)pkg-config
@ -41,7 +42,7 @@ BUILD = $(CC) $(CFLAGS) -o $(OUTPUT)$@ $(patsubst %.bin,%.c,$@) $(LDFLAGS)
###############################
test-all.bin:
$(BUILD) -Werror -fstack-protector-all -O2 -Werror -D_FORTIFY_SOURCE=2 -ldw -lelf -lnuma -lelf -laudit -I/usr/include/slang -lslang $(shell $(PKG_CONFIG) --libs --cflags gtk+-2.0 2>/dev/null) $(FLAGS_PERL_EMBED) $(FLAGS_PYTHON_EMBED) -DPACKAGE='"perf"' -lbfd -ldl
$(BUILD) -Werror -fstack-protector-all -O2 -Werror -D_FORTIFY_SOURCE=2 -ldw -lelf -lnuma -lelf -laudit -I/usr/include/slang -lslang $(shell $(PKG_CONFIG) --libs --cflags gtk+-2.0 2>/dev/null) $(FLAGS_PERL_EMBED) $(FLAGS_PYTHON_EMBED) -DPACKAGE='"perf"' -lbfd -ldl -lz
test-hello.bin:
$(BUILD)
@ -139,6 +140,9 @@ test-compile-32.bin:
test-compile-x32.bin:
$(CC) -mx32 -o $(OUTPUT)$@ test-compile.c
test-zlib.bin:
$(BUILD) -lz
-include *.d
###############################

5
tools/perf/config/feature-checks/test-all.c
View File

@ -93,6 +93,10 @@
# include "test-sync-compare-and-swap.c"
#undef main
#define main main_test_zlib
# include "test-zlib.c"
#undef main
int main(int argc, char *argv[])
{
main_test_libpython();
@ -116,6 +120,7 @@ int main(int argc, char *argv[])
main_test_stackprotector_all();
main_test_libdw_dwarf_unwind();
main_test_sync_compare_and_swap(argc, argv);
main_test_zlib();
return 0;
}

9
tools/perf/config/feature-checks/test-zlib.c Normal file
View File

@ -0,0 +1,9 @@
#include <zlib.h>
int main(void)
{
z_stream zs;
inflateInit(&zs);
return 0;
}

12
tools/perf/util/dso.c
View File

@ -141,18 +141,14 @@ int dso__read_binary_type_filename(const struct dso *dso,
return ret;
}
static int decompress_dummy(const char *input __maybe_unused,
int output __maybe_unused)
{
return -1;
}
static const struct {
const char *fmt;
int (*decompress)(const char *input, int output);
} compressions[] = {
{ "gz", decompress_dummy },
{ NULL, },
#ifdef HAVE_ZLIB_SUPPORT
{ "gz", gzip_decompress_to_file },
#endif
{ NULL, NULL },
};
bool is_supported_compression(const char *ext)

5
tools/perf/util/util.h
View File

@ -351,4 +351,9 @@ void mem_bswap_32(void *src, int byte_size);
const char *get_filename_for_perf_kvm(void);
bool find_process(const char *name);
#ifdef HAVE_ZLIB_SUPPORT
int gzip_decompress_to_file(const char *input, int output_fd);
#endif
#endif /* GIT_COMPAT_UTIL_H */

78
tools/perf/util/zlib.c Normal file
View File

@ -0,0 +1,78 @@
#include <stdio.h>
#include <unistd.h>
#include <sys/stat.h>
#include <sys/mman.h>
#include <zlib.h>
#include "util/util.h"
#include "util/debug.h"
#define CHUNK_SIZE 16384
int gzip_decompress_to_file(const char *input, int output_fd)
{
int ret = Z_STREAM_ERROR;
int input_fd;
void *ptr;
int len;
struct stat stbuf;
unsigned char buf[CHUNK_SIZE];
z_stream zs = {
.zalloc = Z_NULL,
.zfree = Z_NULL,
.opaque = Z_NULL,
.avail_in = 0,
.next_in = Z_NULL,
};
input_fd = open(input, O_RDONLY);
if (input_fd < 0)
return -1;
if (fstat(input_fd, &stbuf) < 0)
goto out_close;
ptr = mmap(NULL, stbuf.st_size, PROT_READ, MAP_PRIVATE, input_fd, 0);
if (ptr == MAP_FAILED)
goto out_close;
if (inflateInit2(&zs, 16 + MAX_WBITS) != Z_OK)
goto out_unmap;
zs.next_in = ptr;
zs.avail_in = stbuf.st_size;
do {
zs.next_out = buf;
zs.avail_out = CHUNK_SIZE;
ret = inflate(&zs, Z_NO_FLUSH);
switch (ret) {
case Z_NEED_DICT:
ret = Z_DATA_ERROR;
/* fall through */
case Z_DATA_ERROR:
case Z_MEM_ERROR:
goto out;
default:
break;
}
len = CHUNK_SIZE - zs.avail_out;
if (writen(output_fd, buf, len) != len) {
ret = Z_DATA_ERROR;
goto out;
}
} while (ret != Z_STREAM_END);
out:
inflateEnd(&zs);
out_unmap:
munmap(ptr, stbuf.st_size);
out_close:
close(input_fd);
return ret == Z_STREAM_END ? 0 : -1;
}