[PATCH] ptsematest, sigwaittest, pmqtest, svsematest reprot error "Could not access /sys/kernel/debug/tracing/tracing_enabled"

[PATCH] ptsematest, sigwaittest, pmqtest, svsematest reprot error "Could not access /sys/kernel/debug/tracing/tracing_enabled"

[Qiao Zhao]

For current RHEL7 and RHEL8 kernel (3.10.0 and 4.18.0), we use "tracing_on"
to control tracing disable/enable. The "tracing_enabled" is not the
current value.

For RHEL bug: https://bugzilla.redhat.com/show_bug.cgi?id=1731336
E.g: # # svsematest -a -b 20us -f -i 100 -l 100 -S
...
Could not access /sys/kernel/debug/tracing/tracing_enabled

Sanity test passed. No this error msg when patched.

Signed-off-by: Qiao Zhao <qzhao@redhat.com>
---
 src/pmqtest/pmqtest.c         | 2 +-
 src/ptsematest/ptsematest.c   | 2 +-
 src/sigwaittest/sigwaittest.c | 2 +-
 src/svsematest/svsematest.c   | 2 +-
 4 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/pmqtest/pmqtest.c b/src/pmqtest/pmqtest.c
index 2191710..a04fc49 100644
--- a/src/pmqtest/pmqtest.c
+++ b/src/pmqtest/pmqtest.c
@@ -204,7 +204,7 @@ void *pmqthread(void *param)
 				char tracing_enabled_file[MAX_PATH];
 
 				strcpy(tracing_enabled_file, get_debugfileprefix());
-				strcat(tracing_enabled_file, "tracing_enabled");
+				strcat(tracing_enabled_file, "tracing_on");
 				int tracing_enabled =
 				    open(tracing_enabled_file, O_WRONLY);
 				if (tracing_enabled >= 0) {
diff --git a/src/ptsematest/ptsematest.c b/src/ptsematest/ptsematest.c
index e8a3177..5537592 100644
--- a/src/ptsematest/ptsematest.c
+++ b/src/ptsematest/ptsematest.c
@@ -131,7 +131,7 @@ void *semathread(void *param)
 				char tracing_enabled_file[MAX_PATH];
 
 				strcpy(tracing_enabled_file, get_debugfileprefix());
-				strcat(tracing_enabled_file, "tracing_enabled");
+				strcat(tracing_enabled_file, "tracing_on");
 				int tracing_enabled =
 				    open(tracing_enabled_file, O_WRONLY);
 				if (tracing_enabled >= 0) {
diff --git a/src/sigwaittest/sigwaittest.c b/src/sigwaittest/sigwaittest.c
index 4579f90..59f28a5 100644
--- a/src/sigwaittest/sigwaittest.c
+++ b/src/sigwaittest/sigwaittest.c
@@ -179,7 +179,7 @@ void *semathread(void *param)
 				char tracing_enabled_file[MAX_PATH];
 
 				strcpy(tracing_enabled_file, get_debugfileprefix());
-				strcat(tracing_enabled_file, "tracing_enabled");
+				strcat(tracing_enabled_file, "tracing_on");
 				int tracing_enabled =
 				    open(tracing_enabled_file, O_WRONLY);
 				if (tracing_enabled >= 0) {
diff --git a/src/svsematest/svsematest.c b/src/svsematest/svsematest.c
index 01083d1..8f88078 100644
--- a/src/svsematest/svsematest.c
+++ b/src/svsematest/svsematest.c
@@ -185,7 +185,7 @@ void *semathread(void *param)
 				char tracing_enabled_file[MAX_PATH];
 
 				strcpy(tracing_enabled_file, get_debugfileprefix());
-				strcat(tracing_enabled_file, "tracing_enabled");
+				strcat(tracing_enabled_file, "tracing_on");
 				int tracing_enabled =
 				    open(tracing_enabled_file, O_WRONLY);
 				if (tracing_enabled >= 0) {
-- 
2.20.1

Re: [PATCH] ptsematest, sigwaittest, pmqtest, svsematest reprot error "Could not access /sys/kernel/debug/tracing/tracing_enabled"

[John Kacur]

On Thu, 25 Jul 2019, Qiao Zhao wrote:

> For current RHEL7 and RHEL8 kernel (3.10.0 and 4.18.0), we use "tracing_on"
> to control tracing disable/enable. The "tracing_enabled" is not the
> current value.
> 
> For RHEL bug: https://bugzilla.redhat.com/show_bug.cgi?id=1731336
> E.g: # # svsematest -a -b 20us -f -i 100 -l 100 -S
> ...
> Could not access /sys/kernel/debug/tracing/tracing_enabled
> 
> Sanity test passed. No this error msg when patched.
> 
> Signed-off-by: Qiao Zhao <qzhao@redhat.com>
> ---
>  src/pmqtest/pmqtest.c         | 2 +-
>  src/ptsematest/ptsematest.c   | 2 +-
>  src/sigwaittest/sigwaittest.c | 2 +-
>  src/svsematest/svsematest.c   | 2 +-
>  4 files changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/src/pmqtest/pmqtest.c b/src/pmqtest/pmqtest.c
> index 2191710..a04fc49 100644
> --- a/src/pmqtest/pmqtest.c
> +++ b/src/pmqtest/pmqtest.c
> @@ -204,7 +204,7 @@ void *pmqthread(void *param)
>  				char tracing_enabled_file[MAX_PATH];
>  
>  				strcpy(tracing_enabled_file, get_debugfileprefix());
> -				strcat(tracing_enabled_file, "tracing_enabled");
> +				strcat(tracing_enabled_file, "tracing_on");
>  				int tracing_enabled =
>  				    open(tracing_enabled_file, O_WRONLY);
>  				if (tracing_enabled >= 0) {
> diff --git a/src/ptsematest/ptsematest.c b/src/ptsematest/ptsematest.c
> index e8a3177..5537592 100644
> --- a/src/ptsematest/ptsematest.c
> +++ b/src/ptsematest/ptsematest.c
> @@ -131,7 +131,7 @@ void *semathread(void *param)
>  				char tracing_enabled_file[MAX_PATH];
>  
>  				strcpy(tracing_enabled_file, get_debugfileprefix());
> -				strcat(tracing_enabled_file, "tracing_enabled");
> +				strcat(tracing_enabled_file, "tracing_on");
>  				int tracing_enabled =
>  				    open(tracing_enabled_file, O_WRONLY);
>  				if (tracing_enabled >= 0) {
> diff --git a/src/sigwaittest/sigwaittest.c b/src/sigwaittest/sigwaittest.c
> index 4579f90..59f28a5 100644
> --- a/src/sigwaittest/sigwaittest.c
> +++ b/src/sigwaittest/sigwaittest.c
> @@ -179,7 +179,7 @@ void *semathread(void *param)
>  				char tracing_enabled_file[MAX_PATH];
>  
>  				strcpy(tracing_enabled_file, get_debugfileprefix());
> -				strcat(tracing_enabled_file, "tracing_enabled");
> +				strcat(tracing_enabled_file, "tracing_on");
>  				int tracing_enabled =
>  				    open(tracing_enabled_file, O_WRONLY);
>  				if (tracing_enabled >= 0) {
> diff --git a/src/svsematest/svsematest.c b/src/svsematest/svsematest.c
> index 01083d1..8f88078 100644
> --- a/src/svsematest/svsematest.c
> +++ b/src/svsematest/svsematest.c
> @@ -185,7 +185,7 @@ void *semathread(void *param)
>  				char tracing_enabled_file[MAX_PATH];
>  
>  				strcpy(tracing_enabled_file, get_debugfileprefix());
> -				strcat(tracing_enabled_file, "tracing_enabled");
> +				strcat(tracing_enabled_file, "tracing_on");
>  				int tracing_enabled =
>  				    open(tracing_enabled_file, O_WRONLY);
>  				if (tracing_enabled >= 0) {
> -- 


Thanks for the patch

I did edit the comments to remove references to rhel
Signed-off-by: John Kacur <jkacur@redhat.com>