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-rw-r--r--drivers/cpuidle/cpuidle-riscv-sbi.c49
-rw-r--r--drivers/cpuidle/cpuidle.c2
-rw-r--r--drivers/cpuidle/governors/haltpoll.c9
3 files changed, 13 insertions, 47 deletions
diff --git a/drivers/cpuidle/cpuidle-riscv-sbi.c b/drivers/cpuidle/cpuidle-riscv-sbi.c
index e8094fc924..a6e123dfe3 100644
--- a/drivers/cpuidle/cpuidle-riscv-sbi.c
+++ b/drivers/cpuidle/cpuidle-riscv-sbi.c
@@ -73,26 +73,6 @@ static inline bool sbi_is_domain_state_available(void)
return data->available;
}
-static int sbi_suspend_finisher(unsigned long suspend_type,
- unsigned long resume_addr,
- unsigned long opaque)
-{
- struct sbiret ret;
-
- ret = sbi_ecall(SBI_EXT_HSM, SBI_EXT_HSM_HART_SUSPEND,
- suspend_type, resume_addr, opaque, 0, 0, 0);
-
- return (ret.error) ? sbi_err_map_linux_errno(ret.error) : 0;
-}
-
-static int sbi_suspend(u32 state)
-{
- if (state & SBI_HSM_SUSP_NON_RET_BIT)
- return cpu_suspend(state, sbi_suspend_finisher);
- else
- return sbi_suspend_finisher(state, 0, 0);
-}
-
static __cpuidle int sbi_cpuidle_enter_state(struct cpuidle_device *dev,
struct cpuidle_driver *drv, int idx)
{
@@ -100,9 +80,9 @@ static __cpuidle int sbi_cpuidle_enter_state(struct cpuidle_device *dev,
u32 state = states[idx];
if (state & SBI_HSM_SUSP_NON_RET_BIT)
- return CPU_PM_CPU_IDLE_ENTER_PARAM(sbi_suspend, idx, state);
+ return CPU_PM_CPU_IDLE_ENTER_PARAM(riscv_sbi_hart_suspend, idx, state);
else
- return CPU_PM_CPU_IDLE_ENTER_RETENTION_PARAM(sbi_suspend,
+ return CPU_PM_CPU_IDLE_ENTER_RETENTION_PARAM(riscv_sbi_hart_suspend,
idx, state);
}
@@ -133,7 +113,7 @@ static __cpuidle int __sbi_enter_domain_idle_state(struct cpuidle_device *dev,
else
state = states[idx];
- ret = sbi_suspend(state) ? -1 : idx;
+ ret = riscv_sbi_hart_suspend(state) ? -1 : idx;
ct_cpuidle_exit();
@@ -206,17 +186,6 @@ static const struct of_device_id sbi_cpuidle_state_match[] = {
{ },
};
-static bool sbi_suspend_state_is_valid(u32 state)
-{
- if (state > SBI_HSM_SUSPEND_RET_DEFAULT &&
- state < SBI_HSM_SUSPEND_RET_PLATFORM)
- return false;
- if (state > SBI_HSM_SUSPEND_NON_RET_DEFAULT &&
- state < SBI_HSM_SUSPEND_NON_RET_PLATFORM)
- return false;
- return true;
-}
-
static int sbi_dt_parse_state_node(struct device_node *np, u32 *state)
{
int err = of_property_read_u32(np, "riscv,sbi-suspend-param", state);
@@ -226,7 +195,7 @@ static int sbi_dt_parse_state_node(struct device_node *np, u32 *state)
return err;
}
- if (!sbi_suspend_state_is_valid(*state)) {
+ if (!riscv_sbi_suspend_state_is_valid(*state)) {
pr_warn("Invalid SBI suspend state %#x\n", *state);
return -EINVAL;
}
@@ -607,16 +576,8 @@ static int __init sbi_cpuidle_init(void)
int ret;
struct platform_device *pdev;
- /*
- * The SBI HSM suspend function is only available when:
- * 1) SBI version is 0.3 or higher
- * 2) SBI HSM extension is available
- */
- if ((sbi_spec_version < sbi_mk_version(0, 3)) ||
- !sbi_probe_extension(SBI_EXT_HSM)) {
- pr_info("HSM suspend not available\n");
+ if (!riscv_sbi_hsm_is_supported())
return 0;
- }
ret = platform_driver_register(&sbi_cpuidle_driver);
if (ret)
diff --git a/drivers/cpuidle/cpuidle.c b/drivers/cpuidle/cpuidle.c
index 737a026ef5..02e40fd7d9 100644
--- a/drivers/cpuidle/cpuidle.c
+++ b/drivers/cpuidle/cpuidle.c
@@ -237,7 +237,7 @@ noinstr int cpuidle_enter_state(struct cpuidle_device *dev,
}
if (target_state->flags & CPUIDLE_FLAG_TLB_FLUSHED)
- leave_mm(dev->cpu);
+ leave_mm();
/* Take note of the planned idle state. */
sched_idle_set_state(target_state);
diff --git a/drivers/cpuidle/governors/haltpoll.c b/drivers/cpuidle/governors/haltpoll.c
index 1dff3a5291..663b7f164d 100644
--- a/drivers/cpuidle/governors/haltpoll.c
+++ b/drivers/cpuidle/governors/haltpoll.c
@@ -98,10 +98,15 @@ static void adjust_poll_limit(struct cpuidle_device *dev, u64 block_ns)
unsigned int shrink = guest_halt_poll_shrink;
val = dev->poll_limit_ns;
- if (shrink == 0)
+ if (shrink == 0) {
val = 0;
- else
+ } else {
val /= shrink;
+ /* Reset value to 0 if shrunk below grow_start */
+ if (val < guest_halt_poll_grow_start)
+ val = 0;
+ }
+
trace_guest_halt_poll_ns_shrink(val, dev->poll_limit_ns);
dev->poll_limit_ns = val;
}