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Message-Id: <1381780950-25642-130-git-send-email-acme@infradead.org>
Date: Mon, 14 Oct 2013 17:01:58 -0300
From: Arnaldo Carvalho de Melo <acme@...radead.org>
To: Ingo Molnar <mingo@...nel.org>
Cc: linux-kernel@...r.kernel.org,
Arnaldo Carvalho de Melo <acme@...hat.com>,
Adrian Hunter <adrian.hunter@...el.com>,
David Ahern <dsahern@...il.com>,
Frederic Weisbecker <fweisbec@...il.com>,
Jiri Olsa <jolsa@...hat.com>, Mike Galbraith <efault@....de>,
Paul Mackerras <paulus@...ba.org>,
Peter Zijlstra <peterz@...radead.org>,
Stephane Eranian <eranian@...gle.com>
Subject: [PATCH 129/161] perf trace: Allow specifying index offset in strarrays
From: Arnaldo Carvalho de Melo <acme@...hat.com>
So that the index passed doesn't have to start at zero, being
decremented from an offset specified when declaring the strarray before
being used as the real array index.
Cc: Adrian Hunter <adrian.hunter@...el.com>
Cc: David Ahern <dsahern@...il.com>
Cc: Frederic Weisbecker <fweisbec@...il.com>
Cc: Jiri Olsa <jolsa@...hat.com>
Cc: Mike Galbraith <efault@....de>
Cc: Paul Mackerras <paulus@...ba.org>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Stephane Eranian <eranian@...gle.com>
Link: http://lkml.kernel.org/n/tip-k1ce6uqyt4qar9edrj3mevod@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
tools/perf/builtin-trace.c | 15 +++++++++++----
1 file changed, 11 insertions(+), 4 deletions(-)
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index addc3e11f999..7424298b87e3 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -44,6 +44,7 @@ struct syscall_arg {
};
struct strarray {
+ int offset;
int nr_entries;
const char **entries;
};
@@ -53,14 +54,20 @@ struct strarray {
.entries = array, \
}
+#define DEFINE_STRARRAY_OFFSET(array, off) struct strarray strarray__##array = { \
+ .offset = off, \
+ .nr_entries = ARRAY_SIZE(array), \
+ .entries = array, \
+}
+
static size_t syscall_arg__scnprintf_strarray(char *bf, size_t size,
struct syscall_arg *arg)
{
- int idx = arg->val;
struct strarray *sa = arg->parm;
+ int idx = arg->val - sa->offset;
if (idx < 0 || idx >= sa->nr_entries)
- return scnprintf(bf, size, "%d", idx);
+ return scnprintf(bf, size, "%d", arg->val);
return scnprintf(bf, size, "%s", sa->entries[idx]);
}
@@ -288,8 +295,8 @@ static size_t syscall_arg__scnprintf_futex_op(char *bf, size_t size, struct sysc
#define SCA_FUTEX_OP syscall_arg__scnprintf_futex_op
-static const char *epoll_ctl_ops[] = { [1] = "ADD", "DEL", "MOD", };
-static DEFINE_STRARRAY(epoll_ctl_ops);
+static const char *epoll_ctl_ops[] = { "ADD", "DEL", "MOD", };
+static DEFINE_STRARRAY_OFFSET(epoll_ctl_ops, 1);
static const char *itimers[] = { "REAL", "VIRTUAL", "PROF", };
static DEFINE_STRARRAY(itimers);
--
1.8.1.4
--
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