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| author | Masami Hiramatsu <mhiramat@kernel.org> | 2016-08-18 10:58:47 +0200 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2016-08-23 22:06:37 +0200 |
| commit | 925437872525ee229736a9a8bdf804fc98f75b44 (patch) | |
| tree | a2e81893c0b0f843b972202d4b79db3325d5bdc7 /tools/perf/util/probe-finder.c | |
| parent | perf probe: Add supported for type casting by the running kernel (diff) | |
| download | linux-925437872525ee229736a9a8bdf804fc98f75b44.tar.xz linux-925437872525ee229736a9a8bdf804fc98f75b44.zip | |
perf probe: Support hexadecimal casting
Support hexadecimal unsigned integer casting by 'x'. This allows user
to explicitly specify the output format of the probe arguments as
hexadecimal.
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Hemant Kumar <hemant@linux.vnet.ibm.com>
Cc: Naohiro Aota <naohiro.aota@hgst.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/147151072679.12957.4458656416765710753.stgit@devbox
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/probe-finder.c')
| -rw-r--r-- | tools/perf/util/probe-finder.c | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/tools/perf/util/probe-finder.c b/tools/perf/util/probe-finder.c index 24dbe23e010c..f18cd6bbada9 100644 --- a/tools/perf/util/probe-finder.c +++ b/tools/perf/util/probe-finder.c @@ -298,13 +298,13 @@ static int convert_variable_type(Dwarf_Die *vr_die, char sbuf[STRERR_BUFSIZE]; int bsize, boffs, total; int ret; - char sign; + char prefix; /* TODO: check all types */ - if (cast && strcmp(cast, "string") != 0 && + if (cast && strcmp(cast, "string") != 0 && strcmp(cast, "x") != 0 && strcmp(cast, "s") != 0 && strcmp(cast, "u") != 0) { /* Non string type is OK */ - /* and respect signedness cast */ + /* and respect signedness/hexadecimal cast */ tvar->type = strdup(cast); return (tvar->type == NULL) ? -ENOMEM : 0; } @@ -366,11 +366,14 @@ static int convert_variable_type(Dwarf_Die *vr_die, } if (cast && (strcmp(cast, "u") == 0)) - sign = 'u'; + prefix = 'u'; else if (cast && (strcmp(cast, "s") == 0)) - sign = 's'; + prefix = 's'; + else if (cast && (strcmp(cast, "x") == 0) && + probe_type_is_available(PROBE_TYPE_X)) + prefix = 'x'; else - sign = die_is_signed_type(&type) ? 's' : 'u'; + prefix = die_is_signed_type(&type) ? 's' : 'u'; ret = dwarf_bytesize(&type); if (ret <= 0) @@ -384,7 +387,7 @@ static int convert_variable_type(Dwarf_Die *vr_die, dwarf_diename(&type), MAX_BASIC_TYPE_BITS); ret = MAX_BASIC_TYPE_BITS; } - ret = snprintf(buf, 16, "%c%d", sign, ret); + ret = snprintf(buf, 16, "%c%d", prefix, ret); formatted: if (ret < 0 || ret >= 16) { |