From: Eric Leblond
It is not correct to assimilate the elf data of the maps section
to an array of map definition. In fact the sizes differ. The
offset provided in the symbol section has to be used instead.
This patch fixes a bug causing a elf with two maps not to load
correctly.
Wang Nan
sys_write
perf 12927 [004] 355971.129279: 0 evt=bpf-output/no-inherit/:
811ed5f1 sys_write
...
Signed-off-by: Wang Nan
Cc: Alexei Starovoitov
Cc: Arnaldo Carvalho de Melo
Cc: Brendan Gregg
Cc: David S. Miller
---
tools/perf/util/evsel.c| 6
Add hexdamical u32 to base data type, which is useful for raw output
because raw data are u32 aligned.
Signed-off-by: Wang Nan
Cc: Alexei Starovoitov
Cc: Arnaldo Carvalho de Melo
Cc: Brendan Gregg
Cc: Jiri Olsa
---
tools/perf/util/data-convert-bt.c | 2 ++
1 file changed, 2 insertions
;)
for event in tc.events:
if not event.name.startswith('evt='):
continue
raw_data = event['raw_data']
print(raw_data[0] + raw_data[1] << 32, raw_data[2]));
Wang Nan (4):
perf tools: Enable pre-event inherit setting by config term
startswith('evt='):
continue
raw_data = event['raw_data']
print(raw_data[0] + raw_data[1] << 32, raw_data[2]));
Signed-off-by: Wang Nan
Cc: Alexei Starovoitov
Cc: Arnaldo Carvalho de Melo
Cc: Brendan Gregg
Cc: Jiri Olsa
---
tools/perf/util/data-co
# Samples: 23K of event 'cycles/inherit/'
# Event count (approx.): 23285400229
...
# Samples: 11K of event 'instructions'
# Event count (approx.): 14969050259
Signed-off-by: Wang Nan
Cc: Arnaldo Carvalho de Melo
Cc: Alexei Starovoitov
Cc: Peter Zijlstra
Cc: Li Zefan
Cc: pi3or..
ully.
This is because the verifier allows only BPF_ADD instruction on a
FRAME_PTR reigster to forge PTR_TO_STACK register, but makes BPF_SUB
on FRAME_PTR reigster to get a UNKNOWN_VALUE register.
This patch fix it by adding BPF_SUB in stack_relative checking.
Signed-off-by: Wang Nan
---
V1 is incor
ully.
This is because the verifier allows only BPF_ADD instruction on a
FRAME_PTR reigster to forge PTR_TO_STACK register, but makes BPF_SUB
on FRAME_PTR reigster to get a UNKNOWN_VALUE register.
This patch fix it by adding BPF_SUB in stack_relative checking.
Signed-off-by: Wang Nan
---
kernel/bpf/
