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libbeauty: Introduce strarray__strtoul_flags()

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Counterpart of strarray__scnprintf_flags(), i.e. from a expression like:

   # perf trace -e syscalls:sys_enter_mmap --filter="flags==PRIVATE|FIXED|DENYWRITE"

I.e. that "flags==PRIVATE|FIXED|DENYWRITE", turn that into

   # perf trace -e syscalls:sys_enter_mmap --filter=0x812

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Brendan Gregg <brendan.d.gregg@gmail.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Luis Cláudio Gonçalves <lclaudio@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-8xst3zrqqogax7fmfzwymvbl@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo 2019-10-19 15:17:30 -03:00
parent f77526be82
commit 154c978d48
2 changed files with 45 additions and 1 deletions
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45
tools/perf/builtin-trace.c
View File

@ -586,6 +586,49 @@ bool strarray__strtoul(struct strarray *sa, char *bf, size_t size, u64 *ret)
return false;
}
bool strarray__strtoul_flags(struct strarray *sa, char *bf, size_t size, u64 *ret)
{
u64 val = 0;
char *tok = bf, *sep, *end;
*ret = 0;
while (size != 0) {
int toklen = size;
sep = memchr(tok, '|', size);
if (sep != NULL) {
size -= sep - tok + 1;
end = sep - 1;
while (end > tok && isspace(*end))
--end;
toklen = end - tok + 1;
}
while (isspace(*tok))
++tok;
if (isalpha(*tok) || *tok == '_') {
if (!strarray__strtoul(sa, tok, toklen, &val))
return false;
} else {
bool is_hexa = tok[0] == 0 && (tok[1] = 'x' || tok[1] == 'X');
val = strtoul(tok, NULL, is_hexa ? 16 : 0);
}
*ret |= (1 << (val - 1));
if (sep == NULL)
break;
tok = sep + 1;
}
return true;
}
bool strarrays__strtoul(struct strarrays *sas, char *bf, size_t size, u64 *ret)
{
int i;
@ -3676,7 +3719,7 @@ static int trace__expand_filter(struct trace *trace __maybe_unused, struct evsel
}
right_end = right + 1;
while (isalnum(*right_end) || *right_end == '_')
while (isalnum(*right_end) || *right_end == '_' || *right_end == '|')
++right_end;
if (isalpha(*right)) {

1
tools/perf/trace/beauty/beauty.h
View File

@ -32,6 +32,7 @@ size_t strarray__scnprintf_suffix(struct strarray *sa, char *bf, size_t size, co
size_t strarray__scnprintf_flags(struct strarray *sa, char *bf, size_t size, bool show_prefix, unsigned long flags);
bool strarray__strtoul(struct strarray *sa, char *bf, size_t size, u64 *ret);
bool strarray__strtoul_flags(struct strarray *sa, char *bf, size_t size, u64 *ret);
struct trace;
struct thread;