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Filename Latest commit message Latest commit date
Adrian Hunter 8e38ea68da perf symbols: Fix kernel maps for kcore and eBPF 
commit 0affd0e5262b6d40f5f63466d88933e99698e240 upstream.

Adjust 'map->pgoff' also when moving a map's start address.

Example with v5.4.34 based kernel:

  Before:

    $ sudo tools/perf/perf record -a --kcore -e intel_pt//k sleep 1
    [ perf record: Woken up 1 times to write data ]
    [ perf record: Captured and wrote 1.958 MB perf.data ]
    $ sudo tools/perf/perf script --itrace=e >/dev/null
    Warning:
    961 instruction trace errors

  After:

    $ sudo tools/perf/perf script --itrace=e >/dev/null
    $

Committer testing:

  # uname -a
  Linux seventh 5.6.10-100.fc30.x86_64 #1 SMP Mon May 4 15:36:44 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
  #

Before:

  # perf record -a --kcore -e intel_pt//k sleep 1
  [ perf record: Woken up 1 times to write data ]
  [ perf record: Captured and wrote 0.923 MB perf.data ]
  # perf script --itrace=e >/dev/null
  Warning:
  295 instruction trace errors
  #

After:

  # perf record -a --kcore -e intel_pt//k sleep 1
  [ perf record: Woken up 1 times to write data ]
  [ perf record: Captured and wrote 0.919 MB perf.data ]
  # perf script --itrace=e >/dev/null
  #

Fixes: fb5a88d413 ("perf tools: Preserve eBPF maps when loading kcore")
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: stable@vger.kernel.org
Link: http://lore.kernel.org/lkml/20200602112505.1406-1-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-06-22 09:31:27 +02:00
..
accounting tools/accounting/getdelays.c: fix netlink attribute length 2020-04-13 10:48:08 +02:00
arch x86/syscalls: Revert "x86/syscalls: Make __X32_SYSCALL_BIT be unsigned long" 2020-06-03 08:21:29 +02:00
bpf bpf: Print error message for bpftool cgroup show 2020-02-24 08:36:40 +01:00
build
cgroup iocost_monitor: drop string wrap around numbers when outputting json 2020-06-22 09:31:01 +02:00
debugging
firewire
firmware
gpio tools: gpio: Fix out-of-tree build regression 2020-04-17 10:50:17 +02:00
hv
iio
include tools lib: Fix builds when glibc contains strlcpy() 2020-02-05 21:22:40 +00:00
io_uring
kvm/kvm_stat tools/kvm_stat: Fix kvm_exit filter name 2020-02-11 04:35:36 -08:00
laptop
leds
lib libbpf: Fix perf_buffer__free() API for sparse allocs 2020-06-22 09:31:11 +02:00
memory-model
nfsd
objtool objtool: Ignore empty alternatives 2020-06-22 09:30:50 +02:00
pci
pcmcia
perf perf symbols: Fix kernel maps for kcore and eBPF 2020-06-22 09:31:27 +02:00
power tools/power turbostat: Fix 32-bit capabilities warning 2020-04-08 09:08:39 +02:00
scripts tools: Let O= makes handle a relative path with -C option 2020-04-01 11:02:00 +02:00
spi
testing selftests/bpf, flow_dissector: Close TAP device FD after the test 2020-06-22 09:31:12 +02:00
thermal/tmon
time
usb usbip: Fix unsafe unaligned pointer usage 2020-02-24 08:36:44 +01:00
virtio
vm tools/vm: fix cross-compile build 2020-04-29 16:33:15 +02:00
wmi
Makefile