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src/cpu/x86: Add helper mp_run_on_all_aps

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Add a helper function mp_run_on_all_aps, it allows running a given
func on all APs excluding the BSP, with an added provision to run
func in serial manner per AP.

BUG=b:169114674

Signed-off-by: Aamir Bohra <aamir.bohra@intel.com>
Change-Id: I74ee8168eb6380e346590f2575350e0a6b73856e
Reviewed-on: https://review.coreboot.org/c/coreboot/+/51271
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Aamir Bohra
2021-03-05 09:41:20 +05:30
committed by Tim Wawrzynczak
parent a5cdf75f69
commit 7e0019ef20
2 changed files with 28 additions and 0 deletions
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22
src/cpu/x86/mp_init.c
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@ -992,6 +992,28 @@ int mp_run_on_aps(void (*func)(void *), void *arg, int logical_cpu_num,
return run_ap_work(&lcb, expire_us);
}
int mp_run_on_all_aps(void (*func)(void *), void *arg, long expire_us, bool run_parallel)
{
int ap_index, bsp_index;
if (run_parallel)
return mp_run_on_aps(func, arg, 0, expire_us);
bsp_index = cpu_index();
const int total_threads = global_num_aps + 1; /* +1 for BSP */
for (ap_index = 0; ap_index < total_threads; ap_index++) {
/* skip if BSP */
if (ap_index == bsp_index)
continue;
if (mp_run_on_aps(func, arg, ap_index, expire_us))
return CB_ERR;
}
return CB_SUCCESS;
}
int mp_run_on_all_cpus(void (*func)(void *), void *arg)
{
/* Run on BSP first. */