rcu: Do RCU GP kthread self-wakeup from softirq and interrupt

[sagit-ice-cold/kernel_xiaomi_msm8998.git] / kernel / sysctl.c

diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 002ec08..beadcf8 100644 (file)
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -342,7 +342,8 @@ static struct ctl_table kern_table[] = {
                .data           = &sysctl_sched_time_avg,
                .maxlen         = sizeof(unsigned int),
                .mode           = 0644,
-               .proc_handler   = proc_dointvec,
+               .proc_handler   = proc_dointvec_minmax,
+               .extra1         = &one,
        },
        {
                .procname       = "sched_shares_window_ns",
@@ -1159,6 +1160,8 @@ static struct ctl_table kern_table[] = {
                .maxlen         = sizeof(unsigned int),
                .mode           = 0644,
                .proc_handler   = timer_migration_handler,
+               .extra1         = &zero,
+               .extra2         = &one,
        },
 #endif
 #ifdef CONFIG_BPF_SYSCALL
@@ -1713,6 +1716,24 @@ static struct ctl_table fs_table[] = {
                .extra2         = &one,
        },
        {
+               .procname       = "protected_fifos",
+               .data           = &sysctl_protected_fifos,
+               .maxlen         = sizeof(int),
+               .mode           = 0600,
+               .proc_handler   = proc_dointvec_minmax,
+               .extra1         = &zero,
+               .extra2         = &two,
+       },
+       {
+               .procname       = "protected_regular",
+               .data           = &sysctl_protected_regular,
+               .maxlen         = sizeof(int),
+               .mode           = 0600,
+               .proc_handler   = proc_dointvec_minmax,
+               .extra1         = &zero,
+               .extra2         = &two,
+       },
+       {
                .procname       = "suid_dumpable",
                .data           = &suid_dumpable,
                .maxlen         = sizeof(int),
@@ -2285,7 +2306,16 @@ static int do_proc_dointvec_minmax_conv(bool *negp, unsigned long *lvalp,
 {
        struct do_proc_dointvec_minmax_conv_param *param = data;
        if (write) {
-               int val = *negp ? -*lvalp : *lvalp;
+               int val;
+               if (*negp) {
+                       if (*lvalp > (unsigned long) INT_MAX + 1)
+                               return -EINVAL;
+                       val = -*lvalp;
+               } else {
+                       if (*lvalp > (unsigned long) INT_MAX)
+                               return -EINVAL;
+                       val = *lvalp;
+               }
                if ((param->min && *param->min > val) ||
                    (param->max && *param->max < val))
                        return -EINVAL;