From: Arnaldo Carvalho de Melo <acme@kernel.org>
To: Ingo Molnar <mingo@kernel.org>
Cc: Clark Williams <williams@redhat.com>,
linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org,
Adrian Hunter <adrian.hunter@intel.com>,
Jiri Olsa <jolsa@redhat.com>,
Steven Rostedt <rostedt@goodmis.org>,
Tzvetomir Stoyanov <tz.stoyanov@gmail.com>,
Arnaldo Carvalho de Melo <acme@redhat.com>
Subject: [PATCH 10/22] tools lib traceevent: Fix compile warnings in tools/lib/traceevent/event-parse.c
Date: Fri, 30 Nov 2018 15:26:40 -0300 [thread overview]
Message-ID: <20181130182652.23620-11-acme@kernel.org> (raw)
In-Reply-To: <20181130182652.23620-1-acme@kernel.org>
From: Adrian Hunter <adrian.hunter@intel.com>
Fix following warnings:
event-parse.c: In function ‘tep_find_event_by_name’:
event-parse.c:3521:21: warning: ‘event’ may be used uninitialized in this function [-Wmaybe-uninitialized]
pevent->last_event = event;
~~~~~~~~~~~~~~~~~~~^~~~~~~
CC ui/gtk/hists.o
LINK plugin_mac80211.so
CC nlattr.o
event-parse.c: In function ‘tep_data_lat_fmt’:
event-parse.c:5200:4: warning: ‘migrate_disable’ may be used uninitialized in this function [-Wmaybe-uninitialized]
trace_seq_printf(s, "%d", migrate_disable);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
event-parse.c:5207:4: warning: ‘lock_depth’ may be used uninitialized in this function [-Wmaybe-uninitialized]
trace_seq_printf(s, "%d", lock_depth);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
LINK plugin_sched_switch.so
LINK plugin_function.so
LINK plugin_xen.so
event-parse.c: In function ‘tep_event_info’:
event-parse.c:5047:7: warning: ‘len_arg’ may be used uninitialized in this function [-Wmaybe-uninitialized]
trace_seq_printf(s, format, len_arg, (char)val);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
event-parse.c:4884:6: note: ‘len_arg’ was declared here
int len_arg;
^~~~~~~
event-parse.c:4338:11: warning: ‘vsize’ may be used uninitialized in this function [-Wmaybe-uninitialized]
val = tep_read_number(pevent, bptr, vsize);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
event-parse.c:4224:6: note: ‘vsize’ was declared here
int vsize;
^~~~~
$ gcc --version
gcc (Clear Linux OS for Intel Architecture) 8.2.1 20180502
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Steven Rostedt (VMware) <rostedt@goodmis.org>
Cc: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com>
Link: http://lkml.kernel.org/r/20181122112937.10582-1-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/lib/traceevent/event-parse.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/tools/lib/traceevent/event-parse.c b/tools/lib/traceevent/event-parse.c
index 3692f29fee46..fbd6d6813fab 100644
--- a/tools/lib/traceevent/event-parse.c
+++ b/tools/lib/traceevent/event-parse.c
@@ -3498,7 +3498,7 @@ struct tep_event_format *
tep_find_event_by_name(struct tep_handle *pevent,
const char *sys, const char *name)
{
- struct tep_event_format *event;
+ struct tep_event_format *event = NULL;
int i;
if (pevent->last_event &&
@@ -4221,7 +4221,7 @@ static struct tep_print_arg *make_bprint_args(char *fmt, void *data, int size, s
unsigned long long ip, val;
char *ptr;
void *bptr;
- int vsize;
+ int vsize = 0;
field = pevent->bprint_buf_field;
ip_field = pevent->bprint_ip_field;
@@ -4881,7 +4881,7 @@ static void pretty_print(struct trace_seq *s, void *data, int size, struct tep_e
char format[32];
int show_func;
int len_as_arg;
- int len_arg;
+ int len_arg = 0;
int len;
int ls;
@@ -5146,8 +5146,8 @@ void tep_data_lat_fmt(struct tep_handle *pevent,
static int migrate_disable_exists;
unsigned int lat_flags;
unsigned int pc;
- int lock_depth;
- int migrate_disable;
+ int lock_depth = 0;
+ int migrate_disable = 0;
int hardirq;
int softirq;
void *data = record->data;
--
2.19.1
next prev parent reply other threads:[~2018-11-30 18:27 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-30 18:26 [GIT PULL 00/22] perf/core improvements and fixes Arnaldo Carvalho de Melo
2018-11-30 18:26 ` [PATCH 01/22] perf build: Give better hint about devel package for libssl Arnaldo Carvalho de Melo
2018-11-30 18:26 ` [PATCH 02/22] perf stat: Fix shadow stats for clock events Arnaldo Carvalho de Melo
2018-11-30 18:26 ` [PATCH 03/22] perf stat: Fix CSV mode column output for non-cgroup events Arnaldo Carvalho de Melo
2018-11-30 18:26 ` [PATCH 04/22] perf map: Remove extra indirection from map__find() Arnaldo Carvalho de Melo
2018-11-30 18:26 ` [PATCH 05/22] perf env: Also consider env->arch == NULL as local operation Arnaldo Carvalho de Melo
2018-11-30 18:26 ` [PATCH 06/22] perf machine: Record if a arch has a single user/kernel address space Arnaldo Carvalho de Melo
2018-11-30 18:26 ` [PATCH 07/22] perf thread: Add fallback functions for cases where cpumode is insufficient Arnaldo Carvalho de Melo
2018-11-30 18:26 ` [PATCH 08/22] perf tools: Use fallback for sample_addr_correlates_sym() cases Arnaldo Carvalho de Melo
2018-11-30 18:26 ` [PATCH 09/22] perf script: Use fallbacks for branch stacks Arnaldo Carvalho de Melo
2018-11-30 18:26 ` Arnaldo Carvalho de Melo [this message]
2018-11-30 18:26 ` [PATCH 11/22] perf tests record: Allow for 'sleep' being 'coreutils' Arnaldo Carvalho de Melo
2018-11-30 18:26 ` [PATCH 12/22] perf test: Fix perf_event_attr test failure Arnaldo Carvalho de Melo
2018-11-30 18:26 ` [PATCH 13/22] tools include: Adopt ERR_CAST() from the kernel err.h header Arnaldo Carvalho de Melo
2018-11-30 18:26 ` [PATCH 14/22] perf bpf: Use ERR_CAST instead of ERR_PTR(PTR_ERR()) Arnaldo Carvalho de Melo
2018-11-30 18:26 ` [PATCH 15/22] perf top: Allow passing a kallsyms file Arnaldo Carvalho de Melo
2018-11-30 18:26 ` [PATCH 16/22] perf intel-pt: Fix error with config term "pt=0" Arnaldo Carvalho de Melo
2018-11-30 18:26 ` [PATCH 17/22] tools build feature: Check if libaio is available Arnaldo Carvalho de Melo
2018-11-30 18:26 ` [PATCH 18/22] perf mmap: Map data buffer for preserving collected data Arnaldo Carvalho de Melo
2018-11-30 18:26 ` [PATCH 19/22] perf record: Enable asynchronous trace writing Arnaldo Carvalho de Melo
2018-11-30 18:26 ` [PATCH 20/22] perf record: Extend trace writing to multi AIO Arnaldo Carvalho de Melo
2018-11-30 18:26 ` [PATCH 21/22] perf beauty mmap_flags: Check if the arch has a mmap.h file Arnaldo Carvalho de Melo
2018-11-30 18:26 ` [PATCH 22/22] tools lib traceevent: Add sanity check to is_timestamp_in_us() Arnaldo Carvalho de Melo
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