| Message ID | 20240506111359.224579-2-laura.nao@collabora.com |
|---|---|
| State | New |
| Headers | show |
| Series | [1/2] selftests/watchdog: limit ping loop and allow configuring the number of pings | expand |
On 5/6/24 05:13, Laura Nao wrote: > In order to run the watchdog selftest with the kselftest runner, the > loop responsible for pinging the watchdog should be finite. This > change limits the loop to 5 iterations by default and introduces a new > '-c' option to adjust the number of pings as needed. This patch makes the test run finite in all cases changing the bevavior to run it forever? > > Signed-off-by: Laura Nao <laura.nao@collabora.com> > --- > tools/testing/selftests/watchdog/watchdog-test.c | 16 ++++++++++++++-- > 1 file changed, 14 insertions(+), 2 deletions(-) > > diff --git a/tools/testing/selftests/watchdog/watchdog-test.c b/tools/testing/selftests/watchdog/watchdog-test.c > index bc71cbca0dde..786cc5a26206 100644 > --- a/tools/testing/selftests/watchdog/watchdog-test.c > +++ b/tools/testing/selftests/watchdog/watchdog-test.c > @@ -24,16 +24,18 @@ > #include <linux/watchdog.h> > > #define DEFAULT_PING_RATE 1 > +#define DEFAULT_PING_COUNT 5 > > int fd; > const char v = 'V'; > -static const char sopts[] = "bdehp:st:Tn:NLf:i"; > +static const char sopts[] = "bdehp:c:st:Tn:NLf:i"; > static const struct option lopts[] = { > {"bootstatus", no_argument, NULL, 'b'}, > {"disable", no_argument, NULL, 'd'}, > {"enable", no_argument, NULL, 'e'}, > {"help", no_argument, NULL, 'h'}, > {"pingrate", required_argument, NULL, 'p'}, > + {"pingcount", required_argument, NULL, 'c'}, > {"status", no_argument, NULL, 's'}, > {"timeout", required_argument, NULL, 't'}, > {"gettimeout", no_argument, NULL, 'T'}, > @@ -90,6 +92,8 @@ static void usage(char *progname) > printf(" -h, --help\t\tPrint the help message\n"); > printf(" -p, --pingrate=P\tSet ping rate to P seconds (default %d)\n", > DEFAULT_PING_RATE); > + printf(" -c, --pingcount=C\tSet number of pings to C (default %d)\n", > + DEFAULT_PING_COUNT); > printf(" -t, --timeout=T\tSet timeout to T seconds\n"); > printf(" -T, --gettimeout\tGet the timeout\n"); > printf(" -n, --pretimeout=T\tSet the pretimeout to T seconds\n"); > @@ -172,6 +176,7 @@ int main(int argc, char *argv[]) > { > int flags; > unsigned int ping_rate = DEFAULT_PING_RATE; > + unsigned int ping_count = DEFAULT_PING_COUNT; > int ret; > int c; > int oneshot = 0; > @@ -248,6 +253,12 @@ int main(int argc, char *argv[]) > ping_rate = DEFAULT_PING_RATE; > printf("Watchdog ping rate set to %u seconds.\n", ping_rate); > break; > + case 'c': > + ping_count = strtoul(optarg, NULL, 0); > + if (!ping_count) > + ping_count = DEFAULT_PING_COUNT; > + printf("Number of pings set to %u.\n", ping_count); > + break; > case 's': > flags = 0; > oneshot = 1; > @@ -336,9 +347,10 @@ int main(int argc, char *argv[]) > > signal(SIGINT, term); > > - while (1) { > + while (ping_count > 0) { > keep_alive(); > sleep(ping_rate); > + ping_count--; So this test no longer runs forever? thanks, -- Shuah
On 6/27/24 20:48, Shuah Khan wrote: > On 5/6/24 05:13, Laura Nao wrote: >> In order to run the watchdog selftest with the kselftest runner, the >> loop responsible for pinging the watchdog should be finite. This >> change limits the loop to 5 iterations by default and introduces a new >> '-c' option to adjust the number of pings as needed. > > This patch makes the test run finite in all cases changing the bevavior > to run it forever? Correct. >> >> Signed-off-by: Laura Nao <laura.nao@collabora.com> >> --- >> tools/testing/selftests/watchdog/watchdog-test.c | 16 ++++++++++++++-- >> 1 file changed, 14 insertions(+), 2 deletions(-) >> >> diff --git a/tools/testing/selftests/watchdog/watchdog-test.c >> b/tools/testing/selftests/watchdog/watchdog-test.c >> index bc71cbca0dde..786cc5a26206 100644 >> --- a/tools/testing/selftests/watchdog/watchdog-test.c >> +++ b/tools/testing/selftests/watchdog/watchdog-test.c >> @@ -24,16 +24,18 @@ >> #include <linux/watchdog.h> >> #define DEFAULT_PING_RATE 1 >> +#define DEFAULT_PING_COUNT 5 >> int fd; >> const char v = 'V'; >> -static const char sopts[] = "bdehp:st:Tn:NLf:i"; >> +static const char sopts[] = "bdehp:c:st:Tn:NLf:i"; >> static const struct option lopts[] = { >> {"bootstatus", no_argument, NULL, 'b'}, >> {"disable", no_argument, NULL, 'd'}, >> {"enable", no_argument, NULL, 'e'}, >> {"help", no_argument, NULL, 'h'}, >> {"pingrate", required_argument, NULL, 'p'}, >> + {"pingcount", required_argument, NULL, 'c'}, >> {"status", no_argument, NULL, 's'}, >> {"timeout", required_argument, NULL, 't'}, >> {"gettimeout", no_argument, NULL, 'T'}, >> @@ -90,6 +92,8 @@ static void usage(char *progname) >> printf(" -h, --help\t\tPrint the help message\n"); >> printf(" -p, --pingrate=P\tSet ping rate to P seconds (default >> %d)\n", >> DEFAULT_PING_RATE); >> + printf(" -c, --pingcount=C\tSet number of pings to C (default >> %d)\n", >> + DEFAULT_PING_COUNT); >> printf(" -t, --timeout=T\tSet timeout to T seconds\n"); >> printf(" -T, --gettimeout\tGet the timeout\n"); >> printf(" -n, --pretimeout=T\tSet the pretimeout to T seconds\n"); >> @@ -172,6 +176,7 @@ int main(int argc, char *argv[]) >> { >> int flags; >> unsigned int ping_rate = DEFAULT_PING_RATE; >> + unsigned int ping_count = DEFAULT_PING_COUNT; >> int ret; >> int c; >> int oneshot = 0; >> @@ -248,6 +253,12 @@ int main(int argc, char *argv[]) >> ping_rate = DEFAULT_PING_RATE; >> printf("Watchdog ping rate set to %u seconds.\n", >> ping_rate); >> break; >> + case 'c': >> + ping_count = strtoul(optarg, NULL, 0); >> + if (!ping_count) >> + ping_count = DEFAULT_PING_COUNT; >> + printf("Number of pings set to %u.\n", ping_count); >> + break; >> case 's': >> flags = 0; >> oneshot = 1; >> @@ -336,9 +347,10 @@ int main(int argc, char *argv[]) >> signal(SIGINT, term); >> - while (1) { >> + while (ping_count > 0) { >> keep_alive(); >> sleep(ping_rate); >> + ping_count--; > > So this test no longer runs forever? > That's correct, with this patch applied the test no longer runs forever. I understand you prefer the current behavior - how about keeping the keep_alive() loop infinite by default and only making it finite when the -c argument is passed? Would that be reasonable? Thanks for your feedback! Laura
On 7/3/24 08:48, Laura Nao wrote: > On 6/27/24 20:48, Shuah Khan wrote: >> On 5/6/24 05:13, Laura Nao wrote: >>> In order to run the watchdog selftest with the kselftest runner, the >>> loop responsible for pinging the watchdog should be finite. This >>> change limits the loop to 5 iterations by default and introduces a new >>> '-c' option to adjust the number of pings as needed. >> >> This patch makes the test run finite in all cases changing the bevavior >> to run it forever? > > Correct. > >>> >>> Signed-off-by: Laura Nao <laura.nao@collabora.com> >>> --- >>> tools/testing/selftests/watchdog/watchdog-test.c | 16 ++++++++++++++-- >>> 1 file changed, 14 insertions(+), 2 deletions(-) >>> >>> diff --git a/tools/testing/selftests/watchdog/watchdog-test.c >>> b/tools/testing/selftests/watchdog/watchdog-test.c >>> index bc71cbca0dde..786cc5a26206 100644 >>> --- a/tools/testing/selftests/watchdog/watchdog-test.c >>> +++ b/tools/testing/selftests/watchdog/watchdog-test.c >>> @@ -24,16 +24,18 @@ >>> #include <linux/watchdog.h> >>> #define DEFAULT_PING_RATE 1 >>> +#define DEFAULT_PING_COUNT 5 >>> int fd; >>> const char v = 'V'; >>> -static const char sopts[] = "bdehp:st:Tn:NLf:i"; >>> +static const char sopts[] = "bdehp:c:st:Tn:NLf:i"; >>> static const struct option lopts[] = { >>> {"bootstatus", no_argument, NULL, 'b'}, >>> {"disable", no_argument, NULL, 'd'}, >>> {"enable", no_argument, NULL, 'e'}, >>> {"help", no_argument, NULL, 'h'}, >>> {"pingrate", required_argument, NULL, 'p'}, >>> + {"pingcount", required_argument, NULL, 'c'}, >>> {"status", no_argument, NULL, 's'}, >>> {"timeout", required_argument, NULL, 't'}, >>> {"gettimeout", no_argument, NULL, 'T'}, >>> @@ -90,6 +92,8 @@ static void usage(char *progname) >>> printf(" -h, --help\t\tPrint the help message\n"); >>> printf(" -p, --pingrate=P\tSet ping rate to P seconds (default >>> %d)\n", >>> DEFAULT_PING_RATE); >>> + printf(" -c, --pingcount=C\tSet number of pings to C (default >>> %d)\n", >>> + DEFAULT_PING_COUNT); >>> printf(" -t, --timeout=T\tSet timeout to T seconds\n"); >>> printf(" -T, --gettimeout\tGet the timeout\n"); >>> printf(" -n, --pretimeout=T\tSet the pretimeout to T seconds\n"); >>> @@ -172,6 +176,7 @@ int main(int argc, char *argv[]) >>> { >>> int flags; >>> unsigned int ping_rate = DEFAULT_PING_RATE; >>> + unsigned int ping_count = DEFAULT_PING_COUNT; >>> int ret; >>> int c; >>> int oneshot = 0; >>> @@ -248,6 +253,12 @@ int main(int argc, char *argv[]) >>> ping_rate = DEFAULT_PING_RATE; >>> printf("Watchdog ping rate set to %u seconds.\n", >>> ping_rate); >>> break; >>> + case 'c': >>> + ping_count = strtoul(optarg, NULL, 0); >>> + if (!ping_count) >>> + ping_count = DEFAULT_PING_COUNT; >>> + printf("Number of pings set to %u.\n", ping_count); >>> + break; >>> case 's': >>> flags = 0; >>> oneshot = 1; >>> @@ -336,9 +347,10 @@ int main(int argc, char *argv[]) >>> signal(SIGINT, term); >>> - while (1) { >>> + while (ping_count > 0) { >>> keep_alive(); >>> sleep(ping_rate); >>> + ping_count--; >> >> So this test no longer runs forever? >> > > That's correct, with this patch applied the test no longer runs forever. > I understand you prefer the current behavior - how about keeping the > keep_alive() loop infinite by default and only making it finite when the > -c argument is passed? Would that be reasonable? > Yes. I am open to taking the patch if the default behavior doesn't change. thanks, -- Shuah
diff --git a/tools/testing/selftests/watchdog/watchdog-test.c b/tools/testing/selftests/watchdog/watchdog-test.c index bc71cbca0dde..786cc5a26206 100644 --- a/tools/testing/selftests/watchdog/watchdog-test.c +++ b/tools/testing/selftests/watchdog/watchdog-test.c @@ -24,16 +24,18 @@ #include <linux/watchdog.h> #define DEFAULT_PING_RATE 1 +#define DEFAULT_PING_COUNT 5 int fd; const char v = 'V'; -static const char sopts[] = "bdehp:st:Tn:NLf:i"; +static const char sopts[] = "bdehp:c:st:Tn:NLf:i"; static const struct option lopts[] = { {"bootstatus", no_argument, NULL, 'b'}, {"disable", no_argument, NULL, 'd'}, {"enable", no_argument, NULL, 'e'}, {"help", no_argument, NULL, 'h'}, {"pingrate", required_argument, NULL, 'p'}, + {"pingcount", required_argument, NULL, 'c'}, {"status", no_argument, NULL, 's'}, {"timeout", required_argument, NULL, 't'}, {"gettimeout", no_argument, NULL, 'T'}, @@ -90,6 +92,8 @@ static void usage(char *progname) printf(" -h, --help\t\tPrint the help message\n"); printf(" -p, --pingrate=P\tSet ping rate to P seconds (default %d)\n", DEFAULT_PING_RATE); + printf(" -c, --pingcount=C\tSet number of pings to C (default %d)\n", + DEFAULT_PING_COUNT); printf(" -t, --timeout=T\tSet timeout to T seconds\n"); printf(" -T, --gettimeout\tGet the timeout\n"); printf(" -n, --pretimeout=T\tSet the pretimeout to T seconds\n"); @@ -172,6 +176,7 @@ int main(int argc, char *argv[]) { int flags; unsigned int ping_rate = DEFAULT_PING_RATE; + unsigned int ping_count = DEFAULT_PING_COUNT; int ret; int c; int oneshot = 0; @@ -248,6 +253,12 @@ int main(int argc, char *argv[]) ping_rate = DEFAULT_PING_RATE; printf("Watchdog ping rate set to %u seconds.\n", ping_rate); break; + case 'c': + ping_count = strtoul(optarg, NULL, 0); + if (!ping_count) + ping_count = DEFAULT_PING_COUNT; + printf("Number of pings set to %u.\n", ping_count); + break; case 's': flags = 0; oneshot = 1; @@ -336,9 +347,10 @@ int main(int argc, char *argv[]) signal(SIGINT, term); - while (1) { + while (ping_count > 0) { keep_alive(); sleep(ping_rate); + ping_count--; } end: /*
In order to run the watchdog selftest with the kselftest runner, the loop responsible for pinging the watchdog should be finite. This change limits the loop to 5 iterations by default and introduces a new '-c' option to adjust the number of pings as needed. Signed-off-by: Laura Nao <laura.nao@collabora.com> --- tools/testing/selftests/watchdog/watchdog-test.c | 16 ++++++++++++++-- 1 file changed, 14 insertions(+), 2 deletions(-)