| Message ID | 1604998411-16116-1-git-send-email-wangqing@vivo.com (mailing list archive) |
|---|---|
| State | Deferred, archived |
| Headers | show |
| Series | [V3] sched/rt, powerpc: Prepare for PREEMPT_RT | expand |
| Context | Check | Description |
|---|---|---|
| snowpatch_ozlabs/apply_patch | success | Successfully applied on branch powerpc/merge (80ecbe16c827714ce3741ed1f1d34488b903e717) |
| snowpatch_ozlabs/build-ppc64le | success | Build succeeded |
| snowpatch_ozlabs/build-ppc64be | success | Build succeeded |
| snowpatch_ozlabs/build-ppc64e | success | Build succeeded |
| snowpatch_ozlabs/build-pmac32 | success | Build succeeded |
| snowpatch_ozlabs/checkpatch | warning | total: 0 errors, 1 warnings, 0 checks, 12 lines checked |
| snowpatch_ozlabs/needsstable | success | Patch has no Fixes tags |
Le 10/11/2020 à 09:53, Wang Qing a écrit : > PREEMPT_RT is a separate preemption model, CONFIG_PREEMPT will > be disabled when CONFIG_PREEMPT_RT is enabled, so we need > to add CONFIG_PREEMPT_RT output to __die(). > > Signed-off-by: Wang Qing <wangqing@vivo.com> Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu> > > Changes in v3: > - Fix typo issue. > > Changes in v2: > - Modify as Christophe suggested. > --- > arch/powerpc/kernel/traps.c | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c > index 5006dcb..dec7b81 > --- a/arch/powerpc/kernel/traps.c > +++ b/arch/powerpc/kernel/traps.c > @@ -262,10 +262,11 @@ static int __die(const char *str, struct pt_regs *regs, long err) > { > printk("Oops: %s, sig: %ld [#%d]\n", str, err, ++die_counter); > > - printk("%s PAGE_SIZE=%luK%s%s%s%s%s%s %s\n", > + printk("%s PAGE_SIZE=%luK%s%s%s%s%s%s%s %s\n", > IS_ENABLED(CONFIG_CPU_LITTLE_ENDIAN) ? "LE" : "BE", > PAGE_SIZE / 1024, get_mmu_str(), > IS_ENABLED(CONFIG_PREEMPT) ? " PREEMPT" : "", > + IS_ENABLED(CONFIG_PREEMPT_RT) ? " PREEMPT_RT" : "", > IS_ENABLED(CONFIG_SMP) ? " SMP" : "", > IS_ENABLED(CONFIG_SMP) ? (" NR_CPUS=" __stringify(NR_CPUS)) : "", > debug_pagealloc_enabled() ? " DEBUG_PAGEALLOC" : "", >
Wang Qing <wangqing@vivo.com> writes: > PREEMPT_RT is a separate preemption model, CONFIG_PREEMPT will > be disabled when CONFIG_PREEMPT_RT is enabled, so we need > to add CONFIG_PREEMPT_RT output to __die(). > > Signed-off-by: Wang Qing <wangqing@vivo.com> Something fairly similar was posted previously. That time I said: I don't think there's any point adding the "_RT" to the __die() output until/if we ever start supporting PREEMPT_RT. https://lore.kernel.org/linuxppc-dev/87d0ext4q3.fsf@mpe.ellerman.id.au/ And I think I still feel the same way. It's not clear powerpc will ever support PREEMPT_RT, so this would just be confusing to people. And potentially someone will then send a patch to remove it as dead code. cheers > diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c > index 5006dcb..dec7b81 > --- a/arch/powerpc/kernel/traps.c > +++ b/arch/powerpc/kernel/traps.c > @@ -262,10 +262,11 @@ static int __die(const char *str, struct pt_regs *regs, long err) > { > printk("Oops: %s, sig: %ld [#%d]\n", str, err, ++die_counter); > > - printk("%s PAGE_SIZE=%luK%s%s%s%s%s%s %s\n", > + printk("%s PAGE_SIZE=%luK%s%s%s%s%s%s%s %s\n", > IS_ENABLED(CONFIG_CPU_LITTLE_ENDIAN) ? "LE" : "BE", > PAGE_SIZE / 1024, get_mmu_str(), > IS_ENABLED(CONFIG_PREEMPT) ? " PREEMPT" : "", > + IS_ENABLED(CONFIG_PREEMPT_RT) ? " PREEMPT_RT" : "", > IS_ENABLED(CONFIG_SMP) ? " SMP" : "", > IS_ENABLED(CONFIG_SMP) ? (" NR_CPUS=" __stringify(NR_CPUS)) : "", > debug_pagealloc_enabled() ? " DEBUG_PAGEALLOC" : "", > -- > 2.7.4
diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c index 5006dcb..dec7b81 --- a/arch/powerpc/kernel/traps.c +++ b/arch/powerpc/kernel/traps.c @@ -262,10 +262,11 @@ static int __die(const char *str, struct pt_regs *regs, long err) { printk("Oops: %s, sig: %ld [#%d]\n", str, err, ++die_counter); - printk("%s PAGE_SIZE=%luK%s%s%s%s%s%s %s\n", + printk("%s PAGE_SIZE=%luK%s%s%s%s%s%s%s %s\n", IS_ENABLED(CONFIG_CPU_LITTLE_ENDIAN) ? "LE" : "BE", PAGE_SIZE / 1024, get_mmu_str(), IS_ENABLED(CONFIG_PREEMPT) ? " PREEMPT" : "", + IS_ENABLED(CONFIG_PREEMPT_RT) ? " PREEMPT_RT" : "", IS_ENABLED(CONFIG_SMP) ? " SMP" : "", IS_ENABLED(CONFIG_SMP) ? (" NR_CPUS=" __stringify(NR_CPUS)) : "", debug_pagealloc_enabled() ? " DEBUG_PAGEALLOC" : "",
PREEMPT_RT is a separate preemption model, CONFIG_PREEMPT will be disabled when CONFIG_PREEMPT_RT is enabled, so we need to add CONFIG_PREEMPT_RT output to __die(). Signed-off-by: Wang Qing <wangqing@vivo.com> Changes in v3: - Fix typo issue. Changes in v2: - Modify as Christophe suggested. --- arch/powerpc/kernel/traps.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)