From: Arnaldo Carvalho de Melo Date: Wed, 5 Jun 2019 13:34:47 +0000 (-0300) Subject: perf trace: Consume the augmented_raw_syscalls payload X-Git-Tag: v5.4-rc1~638^2~17^2~54 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=8195168e877948bb9a943ce11ad3e6ee71014bd5;p=platform%2Fkernel%2Flinux-rpi.git perf trace: Consume the augmented_raw_syscalls payload To support the SCA_FILENAME beautifier in more than one syscall arg, as needed for syscalls such as the rename* family, we need to, after processing one such arg, bump the augmented pointers so that the next augmented arg don't reuse data for the previous augmented arguments. Cc: Adrian Hunter Cc: Brendan Gregg Cc: Jiri Olsa Cc: Luis Cláudio Gonçalves Cc: Namhyung Kim Link: https://lkml.kernel.org/n/tip-4e4cmzyjxb3wkonfo1x9a27y@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c index 19f2212..905e57c 100644 --- a/tools/perf/builtin-trace.c +++ b/tools/perf/builtin-trace.c @@ -1233,8 +1233,17 @@ static void thread__set_filename_pos(struct thread *thread, const char *bf, static size_t syscall_arg__scnprintf_augmented_string(struct syscall_arg *arg, char *bf, size_t size) { struct augmented_arg *augmented_arg = arg->augmented.args; + size_t printed = scnprintf(bf, size, "\"%.*s\"", augmented_arg->size, augmented_arg->value); + /* + * So that the next arg with a payload can consume its augmented arg, i.e. for rename* syscalls + * we would have two strings, each prefixed by its size. + */ + int consumed = sizeof(*augmented_arg) + augmented_arg->size; - return scnprintf(bf, size, "\"%.*s\"", augmented_arg->size, augmented_arg->value); + arg->augmented.args += consumed; + arg->augmented.size -= consumed; + + return printed; } static size_t syscall_arg__scnprintf_filename(char *bf, size_t size,