mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-20 14:16:02 +00:00
![Namhyung Kim](/assets/img/avatar_default.png)
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>
78 lines
1.3 KiB
C
78 lines
1.3 KiB
C
#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;
|
|
}
|