Merge tag 'powerpc-5.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc...

[tomoyo/tomoyo-test1.git] / arch / powerpc / kernel / hw_breakpoint.c

diff --git a/arch/powerpc/kernel/hw_breakpoint.c b/arch/powerpc/kernel/hw_breakpoint.c
index a293a53..c8d1fa2 100644 (file)
--- a/arch/powerpc/kernel/hw_breakpoint.c
+++ b/arch/powerpc/kernel/hw_breakpoint.c
@@ -366,59 +366,3 @@ void hw_breakpoint_pmu_read(struct perf_event *bp)
 {
        /* TODO */
 }
-
-bool dawr_force_enable;
-EXPORT_SYMBOL_GPL(dawr_force_enable);
-
-static ssize_t dawr_write_file_bool(struct file *file,
-                                   const char __user *user_buf,
-                                   size_t count, loff_t *ppos)
-{
-       struct arch_hw_breakpoint null_brk = {0, 0, 0};
-       size_t rc;
-
-       /* Send error to user if they hypervisor won't allow us to write DAWR */
-       if ((!dawr_force_enable) &&
-           (firmware_has_feature(FW_FEATURE_LPAR)) &&
-           (set_dawr(&null_brk) != H_SUCCESS))
-               return -1;
-
-       rc = debugfs_write_file_bool(file, user_buf, count, ppos);
-       if (rc)
-               return rc;
-
-       /* If we are clearing, make sure all CPUs have the DAWR cleared */
-       if (!dawr_force_enable)
-               smp_call_function((smp_call_func_t)set_dawr, &null_brk, 0);
-
-       return rc;
-}
-
-static const struct file_operations dawr_enable_fops = {
-       .read =         debugfs_read_file_bool,
-       .write =        dawr_write_file_bool,
-       .open =         simple_open,
-       .llseek =       default_llseek,
-};
-
-static int __init dawr_force_setup(void)
-{
-       dawr_force_enable = false;
-
-       if (cpu_has_feature(CPU_FTR_DAWR)) {
-               /* Don't setup sysfs file for user control on P8 */
-               dawr_force_enable = true;
-               return 0;
-       }
-
-       if (PVR_VER(mfspr(SPRN_PVR)) == PVR_POWER9) {
-               /* Turn DAWR off by default, but allow admin to turn it on */
-               dawr_force_enable = false;
-               debugfs_create_file_unsafe("dawr_enable_dangerous", 0600,
-                                          powerpc_debugfs_root,
-                                          &dawr_force_enable,
-                                          &dawr_enable_fops);
-       }
-       return 0;
-}
-arch_initcall(dawr_force_setup);