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| author | Nicholas Piggin <npiggin@gmail.com> | 2017-05-22 15:53:00 +1000 |
|---|---|---|
| committer | Stewart Smith <stewart@linux.vnet.ibm.com> | 2017-06-06 20:49:06 +1000 |
| commit | 38b0c8454b56a74fe785f0db1d218afa8f6ea478 (patch) | |
| tree | 2371fcb67e716a7cd16016031cd3554d1afddede /core/fast-reboot.c | |
| parent | 41b14f9452c25f3dd74a8304763a3cc58bff019f (diff) | |
| download | skiboot-38b0c8454b56a74fe785f0db1d218afa8f6ea478.zip skiboot-38b0c8454b56a74fe785f0db1d218afa8f6ea478.tar.gz skiboot-38b0c8454b56a74fe785f0db1d218afa8f6ea478.tar.bz2 | |
cpu: Introduce smt_lowest()
Recent CPUs have introduced a lower SMT priority. This uses the
Linux pattern of executing priority nops in descending order to
get a simple portable way to put the CPU into lowest SMT priority.
Introduce smt_lowest() and use it in place of smt_very_low and
smt_low ; smt_very_low sequences.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
Diffstat (limited to 'core/fast-reboot.c')
| -rw-r--r-- | core/fast-reboot.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/core/fast-reboot.c b/core/fast-reboot.c index 41e87e3..b99eb99 100644 --- a/core/fast-reboot.c +++ b/core/fast-reboot.c @@ -488,7 +488,7 @@ void __noreturn fast_reboot_entry(void) if (this_cpu() != boot_cpu) { this_cpu()->state = cpu_state_present; while (!fast_boot_release) { - smt_very_low(); + smt_lowest(); sync(); } smt_medium(); @@ -511,7 +511,7 @@ void __noreturn fast_reboot_entry(void) /* XXX Add a callin timeout ? */ while (cpu->state != cpu_state_present) { - smt_very_low(); + smt_lowest(); sync(); } smt_medium(); @@ -534,7 +534,7 @@ void __noreturn fast_reboot_entry(void) /* XXX Add a callin timeout ? */ while (cpu->state == cpu_state_present) { - smt_very_low(); + smt_lowest(); sync(); } } |