proc: test /proc/*/maps, smaps, smaps_rollup, statm

Alexey Dobriyan · sfrothwell · commit 34aab6bec23e · 2019-03-06T11:43:18.000+11:00
Start testing VM related fiels found in per-process files. Do it by jiting small executable which brings its address space to precisely known state, then comparing /proc/*/maps, smaps, smaps_rollup, and statm files to expected values. Currently only x86_64 is supported. [adobriyan@gmail.com: exit correctly in /proc/*/maps test] Link: http://lkml.kernel.org/r/20190206073659.GB15311@avx2 Link: http://lkml.kernel.org/r/20190203165806.GA14568@avx2 Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
diff --git a/tools/testing/selftests/proc/.gitignore b/tools/testing/selftests/proc/.gitignore
@@ -2,6 +2,7 @@
 /fd-002-posix-eq
 /fd-003-kthread
 /proc-loadavg-001
+/proc-pid-vm
 /proc-self-map-files-001
 /proc-self-map-files-002
 /proc-self-syscall
diff --git a/tools/testing/selftests/proc/Makefile b/tools/testing/selftests/proc/Makefile
@@ -6,6 +6,7 @@ TEST_GEN_PROGS += fd-001-lookup
 TEST_GEN_PROGS += fd-002-posix-eq
 TEST_GEN_PROGS += fd-003-kthread
 TEST_GEN_PROGS += proc-loadavg-001
+TEST_GEN_PROGS += proc-pid-vm
 TEST_GEN_PROGS += proc-self-map-files-001
 TEST_GEN_PROGS += proc-self-map-files-002
 TEST_GEN_PROGS += proc-self-syscall
diff --git a/tools/testing/selftests/proc/proc-pid-vm.c b/tools/testing/selftests/proc/proc-pid-vm.c
