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authorMukesh Ojha <mojha@codeaurora.org>2018-08-28 12:24:54 +0530
committerThomas Gleixner <tglx@linutronix.de>2018-08-31 14:13:03 +0200
commit6fb86d97207880c1286cd4cb3a7e6a598afbc727 (patch)
treed06ab3fbcb4e4989afe7dd3adf7c779a5072f237
parent5b394b2ddf0347bef56e50c69a58773c94343ff3 (diff)
downloadlinux-stericsson-6fb86d97207880c1286cd4cb3a7e6a598afbc727.tar.gz
cpu/hotplug: Remove skip_onerr field from cpuhp_step structure
When notifiers were there, `skip_onerr` was used to avoid calling particular step startup/teardown callbacks in the CPU up/down rollback path, which made the hotplug asymmetric. As notifiers are gone now after the full state machine conversion, the `skip_onerr` field is no longer required. Remove it from the structure and its usage. Signed-off-by: Mukesh Ojha <mojha@codeaurora.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lkml.kernel.org/r/1535439294-31426-1-git-send-email-mojha@codeaurora.org
-rw-r--r--kernel/cpu.c26
1 files changed, 4 insertions, 22 deletions
diff --git a/kernel/cpu.c b/kernel/cpu.c
index ed44d7d34c2d..aa7fe85ad62e 100644
--- a/kernel/cpu.c
+++ b/kernel/cpu.c
@@ -102,8 +102,6 @@ static inline void cpuhp_lock_release(bool bringup) { }
* @name: Name of the step
* @startup: Startup function of the step
* @teardown: Teardown function of the step
- * @skip_onerr: Do not invoke the functions on error rollback
- * Will go away once the notifiers are gone
* @cant_stop: Bringup/teardown can't be stopped at this step
*/
struct cpuhp_step {
@@ -119,7 +117,6 @@ struct cpuhp_step {
struct hlist_node *node);
} teardown;
struct hlist_head list;
- bool skip_onerr;
bool cant_stop;
bool multi_instance;
};
@@ -550,12 +547,8 @@ static int bringup_cpu(unsigned int cpu)
static void undo_cpu_up(unsigned int cpu, struct cpuhp_cpu_state *st)
{
- for (st->state--; st->state > st->target; st->state--) {
- struct cpuhp_step *step = cpuhp_get_step(st->state);
-
- if (!step->skip_onerr)
- cpuhp_invoke_callback(cpu, st->state, false, NULL, NULL);
- }
+ for (st->state--; st->state > st->target; st->state--)
+ cpuhp_invoke_callback(cpu, st->state, false, NULL, NULL);
}
static int cpuhp_up_callbacks(unsigned int cpu, struct cpuhp_cpu_state *st,
@@ -644,12 +637,6 @@ static void cpuhp_thread_fun(unsigned int cpu)
WARN_ON_ONCE(!cpuhp_is_ap_state(state));
- if (st->rollback) {
- struct cpuhp_step *step = cpuhp_get_step(state);
- if (step->skip_onerr)
- goto next;
- }
-
if (cpuhp_is_atomic_state(state)) {
local_irq_disable();
st->result = cpuhp_invoke_callback(cpu, state, bringup, st->node, &st->last);
@@ -673,7 +660,6 @@ static void cpuhp_thread_fun(unsigned int cpu)
st->should_run = false;
}
-next:
cpuhp_lock_release(bringup);
if (!st->should_run)
@@ -916,12 +902,8 @@ void cpuhp_report_idle_dead(void)
static void undo_cpu_down(unsigned int cpu, struct cpuhp_cpu_state *st)
{
- for (st->state++; st->state < st->target; st->state++) {
- struct cpuhp_step *step = cpuhp_get_step(st->state);
-
- if (!step->skip_onerr)
- cpuhp_invoke_callback(cpu, st->state, true, NULL, NULL);
- }
+ for (st->state++; st->state < st->target; st->state++)
+ cpuhp_invoke_callback(cpu, st->state, true, NULL, NULL);
}
static int cpuhp_down_callbacks(unsigned int cpu, struct cpuhp_cpu_state *st,