kernel/tools/perf/tests/wp.c, branch linux-5.1.y

perf test: S390 does not support watchpoints in test 22

2018-10-08T17:23:44Z

S390 does not support the perf_event_open system call for attribute type PERF_TYPE_BREAKPOINT. This results in test failure for test 22: [root@s8360046 perf]# ./perf test 22 22: Watchpoint : 22.1: Read Only Watchpoint : FAILED! 22.2: Write Only Watchpoint : FAILED! 22.3: Read / Write Watchpoint : FAILED! 22.4: Modify Watchpoint : FAILED! [root@s8360046 perf]# Add s390 support to avoid these tests being executed on s390 platform: [root@s8360046 perf]# ./perf test 22 [root@s8360046 perf]# ./perf test -v 22 22: Watchpoint : Disabled [root@s8360046 perf]# Signed-off-by: Thomas Richter Reviewed-by: Ravi Bangoria Cc: Heiko Carstens Cc: Hendrik Brueckner Cc: Martin Schwidefsky Link: http://lkml.kernel.org/r/20180928105335.67179-1-tmricht@linux.ibm.com Signed-off-by: Arnaldo Carvalho de Melo

perf test: Add watchpoint test

2018-09-18T20:21:13Z

We don't have a 'perf test' entry available to test the watchpoint functionality. Add a simple set of tests: - Read only watchpoint - Write only watchpoint - Read / Write watchpoint - Runtime watchpoint modification Ex.: on powerpc: $ sudo perf test 22 22: Watchpoint : 22.1: Read Only Watchpoint : Ok 22.2: Write Only Watchpoint : Ok 22.3: Read / Write Watchpoint : Ok 22.4: Modify Watchpoint : Ok Signed-off-by: Ravi Bangoria Acked-by: Jiri Olsa Tested-by: Arnaldo Carvalho de Melo Cc: Alexander Shishkin Cc: Hendrik Brueckner Cc: Kate Stewart Cc: Kim Phillips Cc: Namhyung Kim Cc: Naveen N. Rao Cc: Sandipan Das Cc: Thomas Gleixner Cc: Thomas Richter Link: http://lkml.kernel.org/r/20180912061229.22832-1-ravi.bangoria@linux.ibm.com Signed-off-by: Arnaldo Carvalho de Melo