diff options
| author | Anton Blanchard <anton@samba.org> | 2015-12-09 10:11:47 +0100 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2015-12-10 11:11:13 +0100 |
| commit | db1231dcdb4dc6cdcbdef0babe641a9162c0dc98 (patch) | |
| tree | 34250a59e15b1d3e9620a7a9e3083b0a4fa82bce /tools | |
| parent | powerpc: Call restore_sprs() before _switch() (diff) | |
| download | linux-db1231dcdb4dc6cdcbdef0babe641a9162c0dc98.tar.xz linux-db1231dcdb4dc6cdcbdef0babe641a9162c0dc98.zip | |
powerpc: Fix DSCR inheritance over fork()
Two DSCR tests have a hack in them:
/*
* XXX: Force a context switch out so that DSCR
* current value is copied into the thread struct
* which is required for the child to inherit the
* changed value.
*/
sleep(1);
We should not be working around this in the testcase, it is a kernel bug.
Fix it by copying the current DSCR to the child, instead of what we
had in the thread struct at last context switch.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/testing/selftests/powerpc/dscr/dscr_inherit_exec_test.c | 8 | ||||
| -rw-r--r-- | tools/testing/selftests/powerpc/dscr/dscr_inherit_test.c | 8 |
2 files changed, 0 insertions, 16 deletions
diff --git a/tools/testing/selftests/powerpc/dscr/dscr_inherit_exec_test.c b/tools/testing/selftests/powerpc/dscr/dscr_inherit_exec_test.c index 8265504de571..08a8b95e3bc1 100644 --- a/tools/testing/selftests/powerpc/dscr/dscr_inherit_exec_test.c +++ b/tools/testing/selftests/powerpc/dscr/dscr_inherit_exec_test.c @@ -60,14 +60,6 @@ int dscr_inherit_exec(void) else set_dscr(dscr); - /* - * XXX: Force a context switch out so that DSCR - * current value is copied into the thread struct - * which is required for the child to inherit the - * changed value. - */ - sleep(1); - pid = fork(); if (pid == -1) { perror("fork() failed"); diff --git a/tools/testing/selftests/powerpc/dscr/dscr_inherit_test.c b/tools/testing/selftests/powerpc/dscr/dscr_inherit_test.c index 4e414caf7f40..3e5a6d195e9a 100644 --- a/tools/testing/selftests/powerpc/dscr/dscr_inherit_test.c +++ b/tools/testing/selftests/powerpc/dscr/dscr_inherit_test.c @@ -40,14 +40,6 @@ int dscr_inherit(void) else set_dscr(dscr); - /* - * XXX: Force a context switch out so that DSCR - * current value is copied into the thread struct - * which is required for the child to inherit the - * changed value. - */ - sleep(1); - pid = fork(); if (pid == -1) { perror("fork() failed"); |