selftests/powerpc: Run tm-tmspr test for longer

This test creates some threads, which write to TM SPRs, and then makes
sure the registers maintain the correct values across context switches
and contention with other threads.

But currently the test finishes almost instantaneously, which reduces
the chance of it hitting an interesting condition.

So increase the number of loops, so it runs a bit longer, though still
less than 2s on a Power8.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200813013445.686464-3-mpe@ellerman.id.au

diff --git a/tools/testing/selftests/powerpc/tm/tm-tmspr.c b/tools/testing/selftests/powerpc/tm/tm-tmspr.c
index 2ff329e..794d574 100644 (file)
--- a/tools/testing/selftests/powerpc/tm/tm-tmspr.c
+++ b/tools/testing/selftests/powerpc/tm/tm-tmspr.c
@@ -33,7 +33,7 @@
 #include "utils.h"
 #include "tm.h"
 
-int    num_loops       = 10000;
+int    num_loops       = 1000000;
 int    passed = 1;
 
 void tfiar_tfhar(void *in)