linux/tools
James Clark d67d8c87d0 perf cs-etm: Use previous thread for branch sample source IP
Branch samples currently use the IP of the previous packet as the from
IP, and the IP of the current packet as the to IP. But it incorrectly
uses the current thread. In some cases like a jump into a different
exception level this will attribute to the incorrect process.

Fix it by tracking the previous thread in the same way the previous
packet is tracked.

Committer notes:

Resolved conflicts with:

  perf addr_location: Add init/exit/copy functions
  perf thread: Add accessor functions for thread

Reviewed-by: Mike Leach <mike.leach@linaro.org>
Signed-off-by: James Clark <james.clark@arm.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Garry <john.g.garry@oracle.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Suzuki Poulouse <suzuki.poulose@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: coresight@lists.linaro.org
Cc: linux-arm-kernel@lists.infradead.org
Link: http://lore.kernel.org/lkml/20230612111403.100613-3-james.clark@arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2023-06-12 18:18:13 -03:00
..
accounting
arch
bootconfig
bpf
build
certs
cgroup
counter
debugging
edid
firewire
firmware
gpio
hv
iio
include tools headers UAPI: Sync the linux/in.h with the kernel sources 2023-05-26 16:03:27 -03:00
io_uring
kvm/kvm_stat
laptop
leds
lib libsubcmd: Avoid two path statics, removing 8192 bytes from .bss 2023-05-28 10:25:55 -03:00
memory-model
mm
net/ynl
objtool
pci
pcmcia
perf perf cs-etm: Use previous thread for branch sample source IP 2023-06-12 18:18:13 -03:00
power
rcu
scripts
spi
testing
thermal
time
tracing
usb
verification
virtio
wmi
Makefile