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realtime-tests/SOURCES/rt-tests-Fix-warnings.patch

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From d13b57f72f0c8b8e058f9aa4322641d5c15a2618 Mon Sep 17 00:00:00 2001
From: Crystal Wood <crwood@redhat.com>
Date: Wed, 6 Dec 2023 14:55:05 -0600
Subject: [PATCH] rt-tests: Fix warnings
Numerous places threw sign comparison warnings; we could fix them but
it's kind of an obnoxious warning that requires casts to deal with things
such as ARRAY_SIZE() while still being able to check for the user
entering a negative number.
-Wunused-parameter is another obnoxious warning as it flags perfectly
reasonable code that takes unneeded parameters in order to comply with
a function pointer interface or similar; however, all of the instances
that were flagged here were actual dead parameters, so just fix them.
Add volatile to timer_started in hackbench so that it doesn't get
clobbered by longjmp().
Signed-off-by: Crystal Wood <crwood@redhat.com>
--
Let me know if you'd rather I fix the sign warnings.
Signed-off-by: John Kacur <jkacur@redhat.com>
---
Makefile | 2 +-
src/hackbench/hackbench.c | 2 +-
src/sched_deadline/cyclicdeadline.c | 6 +++---
src/sched_deadline/deadline_test.c | 10 +++++-----
src/sigwaittest/sigwaittest.c | 6 +++---
5 files changed, 13 insertions(+), 13 deletions(-)
diff --git a/Makefile b/Makefile
index 2808c212058a..ad481a73cf93 100644
--- a/Makefile
+++ b/Makefile
@@ -31,7 +31,7 @@ prefix ?= /usr/local
bindir ?= $(prefix)/bin
mandir ?= $(prefix)/share/man
-CFLAGS ?= -Wall -Wno-nonnull -Wextra
+CFLAGS ?= -Wall -Wno-nonnull -Wextra -Wno-sign-compare
CPPFLAGS += -D_GNU_SOURCE -Isrc/include
LDFLAGS ?=
diff --git a/src/hackbench/hackbench.c b/src/hackbench/hackbench.c
index 69dd5f087fb6..4430db0e4ed6 100644
--- a/src/hackbench/hackbench.c
+++ b/src/hackbench/hackbench.c
@@ -494,7 +494,7 @@ int main(int argc, char *argv[])
struct timeval start, stop, diff;
int readyfds[2], wakefds[2];
char dummy;
- int timer_started = 0;
+ volatile int timer_started = 0;
struct sched_param sp;
process_options (argc, argv);
diff --git a/src/sched_deadline/cyclicdeadline.c b/src/sched_deadline/cyclicdeadline.c
index 9bdc4b5deaf1..097e2e5d4580 100644
--- a/src/sched_deadline/cyclicdeadline.c
+++ b/src/sched_deadline/cyclicdeadline.c
@@ -750,7 +750,7 @@ static void print_stat(FILE *fp, struct sched_data *sd, int index, int verbose,
}
}
-static u64 do_runtime(long tid, struct sched_data *sd, u64 period)
+static u64 do_runtime(struct sched_data *sd, u64 period)
{
struct thread_stat *stat = &sd->stat;
u64 next_period = period + sd->deadline_us;
@@ -833,7 +833,7 @@ void *run_deadline(void *data)
period = get_time_us();
while (!shutdown) {
- period = do_runtime(tid, sd, period);
+ period = do_runtime(sd, period);
if (tracelimit && (stat->max > tracelimit)) {
shutdown++;
pthread_mutex_lock(&break_thread_id_lock);
@@ -1266,7 +1266,7 @@ int main(int argc, char **argv)
/* Make sure that we can make our deadlines */
start_period = get_time_us();
- do_runtime(gettid(), sd, start_period);
+ do_runtime(sd, start_period);
end_period = get_time_us();
if (end_period - start_period > sd->runtime_us)
fatal("Failed to perform task within runtime: Missed by %lld us\n",
diff --git a/src/sched_deadline/deadline_test.c b/src/sched_deadline/deadline_test.c
index cd8ef01f7d68..ca2da476ec95 100644
--- a/src/sched_deadline/deadline_test.c
+++ b/src/sched_deadline/deadline_test.c
@@ -1181,7 +1181,7 @@ static int read_ctx_switches(int *vol, int *nonvol, int *migrate)
* @data->total_time - Total time it took to complete all loops
* @data->nr_periods - Number of periods that were executed.
*/
-static u64 do_runtime(long tid, struct sched_data *data, u64 period)
+static u64 do_runtime(struct sched_data *data, u64 period)
{
u64 next_period = period + data->deadline_us;
u64 now = get_time_us();
@@ -1354,7 +1354,7 @@ void *run_deadline(void *data)
period = get_time_us();
while (!done) {
- period = do_runtime(tid, sched_data, period);
+ period = do_runtime(sched_data, period);
sched_yield();
}
ret = sched_getattr(0, &attr, sizeof(attr), 0);
@@ -1714,7 +1714,7 @@ static u64 calculate_loops_per_ms(u64 *overhead)
do_sleep(1000);
start = get_time_us();
- do_runtime(0, &sd, start + sd.deadline_us);
+ do_runtime(&sd, start + sd.deadline_us);
end = get_time_us();
diff = end - start;
@@ -1743,7 +1743,7 @@ static u64 calculate_loops_per_ms(u64 *overhead)
do_sleep(1000);
start = get_time_us();
- do_runtime(0, &sd, start + sd.deadline_us);
+ do_runtime(&sd, start + sd.deadline_us);
end = get_time_us();
odiff = end - start;
@@ -1962,7 +1962,7 @@ int main(int argc, char **argv)
/* Make sure that we can make our deadlines */
start_period = get_time_us();
- do_runtime(gettid(), sd, start_period);
+ do_runtime(sd, start_period);
end_period = get_time_us();
if (end_period - start_period > sd->runtime_us) {
printf("Failed to perform task within runtime: Missed by %lld us\n",
diff --git a/src/sigwaittest/sigwaittest.c b/src/sigwaittest/sigwaittest.c
index 55855769c63b..8c1c16fb3081 100644
--- a/src/sigwaittest/sigwaittest.c
+++ b/src/sigwaittest/sigwaittest.c
@@ -375,7 +375,7 @@ static void sighand(int sig __attribute__ ((unused)))
mustshutdown = 1;
}
-static void print_stat(FILE *fp, struct params *receiver, struct params *sender,
+static void print_stat(struct params *receiver, struct params *sender,
int verbose __attribute__ ((unused)), int quiet)
{
int i;
@@ -644,7 +644,7 @@ int main(int argc, char *argv[])
sender[i].shutdown;
if (receiver[0].samples > oldsamples || mustshutdown) {
- print_stat(stdout, receiver, sender, 0, quiet);
+ print_stat(receiver, sender, 0, quiet);
if (!quiet)
printf("\033[%dA", num_threads*2);
}
@@ -664,7 +664,7 @@ int main(int argc, char *argv[])
if (!quiet)
printf("\033[%dB", num_threads*2 + 2);
else
- print_stat(stdout, receiver, sender, 0, 0);
+ print_stat(receiver, sender, 0, 0);
for (i = 0; i < num_threads; i++) {
receiver[i].shutdown = 1;
--
2.43.0
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