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cpu/x86/mp_init: use cb_err as run_ap_work return type 

Using cb_err as return type clarifies the meaning of the different
return values. To not change the return types of mp_run_on_aps which is
exposed outside of this compilation unit to keep the scope of this patch
limited, the return value of run_ap_work gets translated to the int
values in mp_run_on_aps. This could also be done by a cast of the
run_ap_work return value to int, but an explicit translation of the
return values should be clearer about what it does there.

Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: Id346c8edf06229a929b4783498d8c6774f54a8b1
Reviewed-on: https://review.coreboot.org/c/coreboot/+/58490
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
This commit is contained in:
Felix Held 2021-10-20 19:46:14 +02:00 committed by Felix Held
parent c6f0ed789b
commit e198880732
1 changed files with 8 additions and 6 deletions
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14
src/cpu/x86/mp_init.c
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@ -886,7 +886,7 @@ static void store_callback(struct mp_callback **slot, struct mp_callback *val)
);
}
static int run_ap_work(struct mp_callback *val, long expire_us)
static enum cb_err run_ap_work(struct mp_callback *val, long expire_us)
{
int i;
int cpus_accepted;
@ -895,14 +895,14 @@ static int run_ap_work(struct mp_callback *val, long expire_us)
if (!CONFIG(PARALLEL_MP_AP_WORK)) {
printk(BIOS_ERR, "APs already parked. PARALLEL_MP_AP_WORK not selected.\n");
return -1;
return CB_ERR;
}
cur_cpu = cpu_index();
if (cur_cpu < 0) {
printk(BIOS_ERR, "Invalid CPU index.\n");
return -1;
return CB_ERR;
}
/* Signal to all the APs to run the func. */
@ -928,12 +928,12 @@ static int run_ap_work(struct mp_callback *val, long expire_us)
}
if (cpus_accepted == global_num_aps)
return 0;
return CB_SUCCESS;
} while (expire_us <= 0 || !stopwatch_expired(&sw));
printk(BIOS_CRIT, "CRITICAL ERROR: AP call expired. %d/%d CPUs accepted.\n",
cpus_accepted, global_num_aps);
return -1;
return CB_ERR;
}
static void ap_wait_for_instruction(void)
@ -979,7 +979,9 @@ int mp_run_on_aps(void (*func)(void *), void *arg, int logical_cpu_num,
{
struct mp_callback lcb = { .func = func, .arg = arg,
.logical_cpu_number = logical_cpu_num};
return run_ap_work(&lcb, expire_us);
/* TODO: Remove this return value translation after changing the return type of
mp_run_on_aps to enum cb_err */
return run_ap_work(&lcb, expire_us) == CB_SUCCESS ? 0 : -1;
}
int mp_run_on_all_aps(void (*func)(void *), void *arg, long expire_us, bool run_parallel)