On Sun, Jul 05, 2020 at 01:24:07PM +0200, Geert Uytterhoeven wrote:

Hi Greg,

On Sun, Jul 5, 2020 at 8:55 AM Greg Kroah-Hartman
[off-list ref] wrote:

quoted

On Sat, Jul 04, 2020 at 08:38:26PM +0200, Geert Uytterhoeven wrote:

quoted

On Sat, Jul 4, 2020 at 4:05 PM Greg Kroah-Hartman
[off-list ref] wrote:

quoted

Test the functionality of readfile(2) in various ways.

Also provide a simple speed test program to benchmark using readfile()
instead of using open()/read()/close().

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

quoted

quoted

quoted

--- /dev/null
+++ b/tools/testing/selftests/readfile/readfile.c

quoted

+static void readfile(const char *filename)
+{
+//     int root_fd;

???

Ugh, sorry about that, I obviously didn't clean up my last tests from
this file, thanks for catching that.

Reading about seq_file behavior, did the commented-out test for
"/sys/kernel/debug/usb/devices" work?

Yes it did, which means I need to go dig to try to find a "problem"
seq_file procfs file to try to debug that behavior...

thanks,

greg k-h