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| author | Arnaldo Carvalho de Melo <[email protected]> | 2019-07-16 17:55:57 +0000 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <[email protected]> | 2019-07-29 21:34:41 +0000 |
| commit | 8d5da2649d8211e63c5f65ccf8945f2c46a9c0b8 (patch) | |
| tree | b253336f074c366aae78cf9f01da18c2b4f3a1e5 /tools/perf/util/trace-event-scripting.c | |
| parent | perf augmented_raw_syscalls: Switch to using BPF_MAP_TYPE_PROG_ARRAY (diff) | |
| download | kernel-8d5da2649d8211e63c5f65ccf8945f2c46a9c0b8.tar.gz kernel-8d5da2649d8211e63c5f65ccf8945f2c46a9c0b8.zip | |
perf augmented_raw_syscalls: Support copying two string syscall args
Starting with the renameat and renameat2 syscall, that both receive as
second and fourth parameters a pathname:
# perf trace -e rename* mv one ANOTHER
LLVM: dumping /home/acme/git/perf/tools/perf/examples/bpf/augmented_raw_syscalls.o
mv: cannot stat 'one': No such file or directory
renameat2(AT_FDCWD, "one", AT_FDCWD, "ANOTHER", RENAME_NOREPLACE) = -1 ENOENT (No such file or directory)
#
Since the per CPU scratch buffer map has space for two maximum sized
pathnames, the verifier is satisfied that there will be no overrun.
Cc: Adrian Hunter <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Luis Cláudio Gonçalves <[email protected]>
Cc: Namhyung Kim <[email protected]>
Link: https://lkml.kernel.org/n/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
Diffstat (limited to 'tools/perf/util/trace-event-scripting.c')
0 files changed, 0 insertions, 0 deletions