* [PATCH 1/1] pseries/hotplug-memory.c: Replace nested ifs by switch-case
@ 2019-08-01 22:52 Leonardo Bras
2019-08-02 7:21 ` David Hildenbrand
` (2 more replies)
0 siblings, 3 replies; 5+ messages in thread
From: Leonardo Bras @ 2019-08-01 22:52 UTC (permalink / raw)
To: linuxppc-dev, linux-kernel
Cc: Leonardo Bras, Benjamin Herrenschmidt, Paul Mackerras,
Michael Ellerman, Nathan Fontenot, Pavel Tatashin,
Greg Kroah-Hartman, Andrew Morton, David Hildenbrand,
Nathan Lynch, YueHaibing, Mahesh Salgaonkar, Rob Herring
I noticed these nested ifs can be easily replaced by switch-cases,
which can improve readability.
Signed-off-by: Leonardo Bras <leonardo@linux.ibm.com>
---
.../platforms/pseries/hotplug-memory.c | 26 +++++++++++++------
1 file changed, 18 insertions(+), 8 deletions(-)
diff --git a/arch/powerpc/platforms/pseries/hotplug-memory.c b/arch/powerpc/platforms/pseries/hotplug-memory.c
index 46d0d35b9ca4..8e700390f3d6 100644
--- a/arch/powerpc/platforms/pseries/hotplug-memory.c
+++ b/arch/powerpc/platforms/pseries/hotplug-memory.c
@@ -880,34 +880,44 @@ int dlpar_memory(struct pseries_hp_errorlog *hp_elog)
switch (hp_elog->action) {
case PSERIES_HP_ELOG_ACTION_ADD:
- if (hp_elog->id_type == PSERIES_HP_ELOG_ID_DRC_COUNT) {
+ switch (hp_elog->id_type) {
+ case PSERIES_HP_ELOG_ID_DRC_COUNT:
count = hp_elog->_drc_u.drc_count;
rc = dlpar_memory_add_by_count(count);
- } else if (hp_elog->id_type == PSERIES_HP_ELOG_ID_DRC_INDEX) {
+ break;
+ case PSERIES_HP_ELOG_ID_DRC_INDEX:
drc_index = hp_elog->_drc_u.drc_index;
rc = dlpar_memory_add_by_index(drc_index);
- } else if (hp_elog->id_type == PSERIES_HP_ELOG_ID_DRC_IC) {
+ break;
+ case PSERIES_HP_ELOG_ID_DRC_IC:
count = hp_elog->_drc_u.ic.count;
drc_index = hp_elog->_drc_u.ic.index;
rc = dlpar_memory_add_by_ic(count, drc_index);
- } else {
+ break;
+ default:
rc = -EINVAL;
+ break;
}
break;
case PSERIES_HP_ELOG_ACTION_REMOVE:
- if (hp_elog->id_type == PSERIES_HP_ELOG_ID_DRC_COUNT) {
+ switch (hp_elog->id_type) {
+ case PSERIES_HP_ELOG_ID_DRC_COUNT:
count = hp_elog->_drc_u.drc_count;
rc = dlpar_memory_remove_by_count(count);
- } else if (hp_elog->id_type == PSERIES_HP_ELOG_ID_DRC_INDEX) {
+ break;
+ case PSERIES_HP_ELOG_ID_DRC_INDEX:
drc_index = hp_elog->_drc_u.drc_index;
rc = dlpar_memory_remove_by_index(drc_index);
- } else if (hp_elog->id_type == PSERIES_HP_ELOG_ID_DRC_IC) {
+ break;
+ case PSERIES_HP_ELOG_ID_DRC_IC:
count = hp_elog->_drc_u.ic.count;
drc_index = hp_elog->_drc_u.ic.index;
rc = dlpar_memory_remove_by_ic(count, drc_index);
- } else {
+ break;
+ default:
rc = -EINVAL;
+ break;
}
break;
--
2.20.1
^ permalink raw reply related [flat|nested] 5+ messages in thread* Re: [PATCH 1/1] pseries/hotplug-memory.c: Replace nested ifs by switch-case
2019-08-01 22:52 [PATCH 1/1] pseries/hotplug-memory.c: Replace nested ifs by switch-case Leonardo Bras
@ 2019-08-02 7:21 ` David Hildenbrand
2019-08-02 12:26 ` Michael Ellerman
2019-08-10 10:20 ` Michael Ellerman
2 siblings, 0 replies; 5+ messages in thread
From: David Hildenbrand @ 2019-08-02 7:21 UTC (permalink / raw)
To: Leonardo Bras, linuxppc-dev, linux-kernel
Cc: Benjamin Herrenschmidt, Paul Mackerras, Michael Ellerman,
Nathan Fontenot, Pavel Tatashin, Greg Kroah-Hartman,
Andrew Morton, Nathan Lynch, YueHaibing, Mahesh Salgaonkar,
Rob Herring
On 02.08.19 00:52, Leonardo Bras wrote:
> I noticed these nested ifs can be easily replaced by switch-cases,
> which can improve readability.
>
> Signed-off-by: Leonardo Bras <leonardo@linux.ibm.com>
> ---
> .../platforms/pseries/hotplug-memory.c | 26 +++++++++++++------
> 1 file changed, 18 insertions(+), 8 deletions(-)
More LOC but seems to be the right thing to do
Reviewed-by: David Hildenbrand <david@redhat.com>
>
> diff --git a/arch/powerpc/platforms/pseries/hotplug-memory.c b/arch/powerpc/platforms/pseries/hotplug-memory.c
> index 46d0d35b9ca4..8e700390f3d6 100644
> --- a/arch/powerpc/platforms/pseries/hotplug-memory.c
> +++ b/arch/powerpc/platforms/pseries/hotplug-memory.c
> @@ -880,34 +880,44 @@ int dlpar_memory(struct pseries_hp_errorlog *hp_elog)
>
> switch (hp_elog->action) {
> case PSERIES_HP_ELOG_ACTION_ADD:
> - if (hp_elog->id_type == PSERIES_HP_ELOG_ID_DRC_COUNT) {
> + switch (hp_elog->id_type) {
> + case PSERIES_HP_ELOG_ID_DRC_COUNT:
> count = hp_elog->_drc_u.drc_count;
> rc = dlpar_memory_add_by_count(count);
> - } else if (hp_elog->id_type == PSERIES_HP_ELOG_ID_DRC_INDEX) {
> + break;
> + case PSERIES_HP_ELOG_ID_DRC_INDEX:
> drc_index = hp_elog->_drc_u.drc_index;
> rc = dlpar_memory_add_by_index(drc_index);
> - } else if (hp_elog->id_type == PSERIES_HP_ELOG_ID_DRC_IC) {
> + break;
> + case PSERIES_HP_ELOG_ID_DRC_IC:
> count = hp_elog->_drc_u.ic.count;
> drc_index = hp_elog->_drc_u.ic.index;
> rc = dlpar_memory_add_by_ic(count, drc_index);
> - } else {
> + break;
> + default:
> rc = -EINVAL;
> + break;
> }
>
> break;
> case PSERIES_HP_ELOG_ACTION_REMOVE:
> - if (hp_elog->id_type == PSERIES_HP_ELOG_ID_DRC_COUNT) {
> + switch (hp_elog->id_type) {
> + case PSERIES_HP_ELOG_ID_DRC_COUNT:
> count = hp_elog->_drc_u.drc_count;
> rc = dlpar_memory_remove_by_count(count);
> - } else if (hp_elog->id_type == PSERIES_HP_ELOG_ID_DRC_INDEX) {
> + break;
> + case PSERIES_HP_ELOG_ID_DRC_INDEX:
> drc_index = hp_elog->_drc_u.drc_index;
> rc = dlpar_memory_remove_by_index(drc_index);
> - } else if (hp_elog->id_type == PSERIES_HP_ELOG_ID_DRC_IC) {
> + break;
> + case PSERIES_HP_ELOG_ID_DRC_IC:
> count = hp_elog->_drc_u.ic.count;
> drc_index = hp_elog->_drc_u.ic.index;
> rc = dlpar_memory_remove_by_ic(count, drc_index);
> - } else {
> + break;
> + default:
> rc = -EINVAL;
> + break;
> }
>
> break;
>
--
Thanks,
David / dhildenb
^ permalink raw reply [flat|nested] 5+ messages in thread* Re: [PATCH 1/1] pseries/hotplug-memory.c: Replace nested ifs by switch-case
2019-08-01 22:52 [PATCH 1/1] pseries/hotplug-memory.c: Replace nested ifs by switch-case Leonardo Bras
2019-08-02 7:21 ` David Hildenbrand
@ 2019-08-02 12:26 ` Michael Ellerman
2019-08-02 13:18 ` Leonardo Bras
2019-08-10 10:20 ` Michael Ellerman
2 siblings, 1 reply; 5+ messages in thread
From: Michael Ellerman @ 2019-08-02 12:26 UTC (permalink / raw)
To: Leonardo Bras, linuxppc-dev, linux-kernel
Cc: Leonardo Bras, Benjamin Herrenschmidt, Paul Mackerras,
Nathan Fontenot, Pavel Tatashin, Greg Kroah-Hartman,
Andrew Morton, David Hildenbrand, Nathan Lynch, YueHaibing,
Mahesh Salgaonkar, Rob Herring
Leonardo Bras <leonardo@linux.ibm.com> writes:
> I noticed these nested ifs can be easily replaced by switch-cases,
> which can improve readability.
>
> Signed-off-by: Leonardo Bras <leonardo@linux.ibm.com>
> ---
> .../platforms/pseries/hotplug-memory.c | 26 +++++++++++++------
> 1 file changed, 18 insertions(+), 8 deletions(-)
Thanks, this looks sensible.
Please use "powerpc/" as the prefix on your patches, eg. in this case:
"powerpc/pseries/hotplug-memory.c: Replace nested ifs by switch-case"
I'll fix it up this time when I apply.
cheers
> diff --git a/arch/powerpc/platforms/pseries/hotplug-memory.c b/arch/powerpc/platforms/pseries/hotplug-memory.c
> index 46d0d35b9ca4..8e700390f3d6 100644
> --- a/arch/powerpc/platforms/pseries/hotplug-memory.c
> +++ b/arch/powerpc/platforms/pseries/hotplug-memory.c
> @@ -880,34 +880,44 @@ int dlpar_memory(struct pseries_hp_errorlog *hp_elog)
>
> switch (hp_elog->action) {
> case PSERIES_HP_ELOG_ACTION_ADD:
> - if (hp_elog->id_type == PSERIES_HP_ELOG_ID_DRC_COUNT) {
> + switch (hp_elog->id_type) {
> + case PSERIES_HP_ELOG_ID_DRC_COUNT:
> count = hp_elog->_drc_u.drc_count;
> rc = dlpar_memory_add_by_count(count);
> - } else if (hp_elog->id_type == PSERIES_HP_ELOG_ID_DRC_INDEX) {
> + break;
> + case PSERIES_HP_ELOG_ID_DRC_INDEX:
> drc_index = hp_elog->_drc_u.drc_index;
> rc = dlpar_memory_add_by_index(drc_index);
> - } else if (hp_elog->id_type == PSERIES_HP_ELOG_ID_DRC_IC) {
> + break;
> + case PSERIES_HP_ELOG_ID_DRC_IC:
> count = hp_elog->_drc_u.ic.count;
> drc_index = hp_elog->_drc_u.ic.index;
> rc = dlpar_memory_add_by_ic(count, drc_index);
> - } else {
> + break;
> + default:
> rc = -EINVAL;
> + break;
> }
>
> break;
> case PSERIES_HP_ELOG_ACTION_REMOVE:
> - if (hp_elog->id_type == PSERIES_HP_ELOG_ID_DRC_COUNT) {
> + switch (hp_elog->id_type) {
> + case PSERIES_HP_ELOG_ID_DRC_COUNT:
> count = hp_elog->_drc_u.drc_count;
> rc = dlpar_memory_remove_by_count(count);
> - } else if (hp_elog->id_type == PSERIES_HP_ELOG_ID_DRC_INDEX) {
> + break;
> + case PSERIES_HP_ELOG_ID_DRC_INDEX:
> drc_index = hp_elog->_drc_u.drc_index;
> rc = dlpar_memory_remove_by_index(drc_index);
> - } else if (hp_elog->id_type == PSERIES_HP_ELOG_ID_DRC_IC) {
> + break;
> + case PSERIES_HP_ELOG_ID_DRC_IC:
> count = hp_elog->_drc_u.ic.count;
> drc_index = hp_elog->_drc_u.ic.index;
> rc = dlpar_memory_remove_by_ic(count, drc_index);
> - } else {
> + break;
> + default:
> rc = -EINVAL;
> + break;
> }
>
> break;
> --
> 2.20.1
^ permalink raw reply [flat|nested] 5+ messages in thread* Re: [PATCH 1/1] pseries/hotplug-memory.c: Replace nested ifs by switch-case
2019-08-02 12:26 ` Michael Ellerman
@ 2019-08-02 13:18 ` Leonardo Bras
0 siblings, 0 replies; 5+ messages in thread
From: Leonardo Bras @ 2019-08-02 13:18 UTC (permalink / raw)
To: Michael Ellerman, linuxppc-dev, linux-kernel
Cc: Nathan Lynch, Pavel Tatashin, David Hildenbrand,
Greg Kroah-Hartman, YueHaibing, Mahesh Salgaonkar,
Paul Mackerras, Nathan Fontenot, Andrew Morton, Rob Herring
[-- Attachment #1: Type: text/plain, Size: 2960 bytes --]
On Fri, 2019-08-02 at 22:26 +1000, Michael Ellerman wrote:
> Leonardo Bras <leonardo@linux.ibm.com> writes:
> > I noticed these nested ifs can be easily replaced by switch-cases,
> > which can improve readability.
> >
> > Signed-off-by: Leonardo Bras <leonardo@linux.ibm.com>
> > ---
> > .../platforms/pseries/hotplug-memory.c | 26 +++++++++++++------
> > 1 file changed, 18 insertions(+), 8 deletions(-)
>
> Thanks, this looks sensible.
>
> Please use "powerpc/" as the prefix on your patches, eg. in this case:
>
> "powerpc/pseries/hotplug-memory.c: Replace nested ifs by switch-case"
>
Ok, I will make sure to do that next time.
Thanks!
> I'll fix it up this time when I apply.
>
> cheers
>
> > diff --git a/arch/powerpc/platforms/pseries/hotplug-memory.c b/arch/powerpc/platforms/pseries/hotplug-memory.c
> > index 46d0d35b9ca4..8e700390f3d6 100644
> > --- a/arch/powerpc/platforms/pseries/hotplug-memory.c
> > +++ b/arch/powerpc/platforms/pseries/hotplug-memory.c
> > @@ -880,34 +880,44 @@ int dlpar_memory(struct pseries_hp_errorlog *hp_elog)
> >
> > switch (hp_elog->action) {
> > case PSERIES_HP_ELOG_ACTION_ADD:
> > - if (hp_elog->id_type == PSERIES_HP_ELOG_ID_DRC_COUNT) {
> > + switch (hp_elog->id_type) {
> > + case PSERIES_HP_ELOG_ID_DRC_COUNT:
> > count = hp_elog->_drc_u.drc_count;
> > rc = dlpar_memory_add_by_count(count);
> > - } else if (hp_elog->id_type == PSERIES_HP_ELOG_ID_DRC_INDEX) {
> > + break;
> > + case PSERIES_HP_ELOG_ID_DRC_INDEX:
> > drc_index = hp_elog->_drc_u.drc_index;
> > rc = dlpar_memory_add_by_index(drc_index);
> > - } else if (hp_elog->id_type == PSERIES_HP_ELOG_ID_DRC_IC) {
> > + break;
> > + case PSERIES_HP_ELOG_ID_DRC_IC:
> > count = hp_elog->_drc_u.ic.count;
> > drc_index = hp_elog->_drc_u.ic.index;
> > rc = dlpar_memory_add_by_ic(count, drc_index);
> > - } else {
> > + break;
> > + default:
> > rc = -EINVAL;
> > + break;
> > }
> >
> > break;
> > case PSERIES_HP_ELOG_ACTION_REMOVE:
> > - if (hp_elog->id_type == PSERIES_HP_ELOG_ID_DRC_COUNT) {
> > + switch (hp_elog->id_type) {
> > + case PSERIES_HP_ELOG_ID_DRC_COUNT:
> > count = hp_elog->_drc_u.drc_count;
> > rc = dlpar_memory_remove_by_count(count);
> > - } else if (hp_elog->id_type == PSERIES_HP_ELOG_ID_DRC_INDEX) {
> > + break;
> > + case PSERIES_HP_ELOG_ID_DRC_INDEX:
> > drc_index = hp_elog->_drc_u.drc_index;
> > rc = dlpar_memory_remove_by_index(drc_index);
> > - } else if (hp_elog->id_type == PSERIES_HP_ELOG_ID_DRC_IC) {
> > + break;
> > + case PSERIES_HP_ELOG_ID_DRC_IC:
> > count = hp_elog->_drc_u.ic.count;
> > drc_index = hp_elog->_drc_u.ic.index;
> > rc = dlpar_memory_remove_by_ic(count, drc_index);
> > - } else {
> > + break;
> > + default:
> > rc = -EINVAL;
> > + break;
> > }
> >
> > break;
> > --
> > 2.20.1
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^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH 1/1] pseries/hotplug-memory.c: Replace nested ifs by switch-case
2019-08-01 22:52 [PATCH 1/1] pseries/hotplug-memory.c: Replace nested ifs by switch-case Leonardo Bras
2019-08-02 7:21 ` David Hildenbrand
2019-08-02 12:26 ` Michael Ellerman
@ 2019-08-10 10:20 ` Michael Ellerman
2 siblings, 0 replies; 5+ messages in thread
From: Michael Ellerman @ 2019-08-10 10:20 UTC (permalink / raw)
To: Leonardo Bras, linuxppc-dev, linux-kernel
Cc: Nathan Lynch, Pavel Tatashin, Greg Kroah-Hartman,
David Hildenbrand, YueHaibing, Mahesh Salgaonkar, Paul Mackerras,
Nathan Fontenot, Leonardo Bras, Andrew Morton, Rob Herring
On Thu, 2019-08-01 at 22:52:51 UTC, Leonardo Bras wrote:
> I noticed these nested ifs can be easily replaced by switch-cases,
> which can improve readability.
>
> Signed-off-by: Leonardo Bras <leonardo@linux.ibm.com>
> Reviewed-by: David Hildenbrand <david@redhat.com>
Series applied to powerpc next, thanks.
https://git.kernel.org/powerpc/c/9616dda1aaddb2080122aaeab96ad7fc064e36b4
cheers
^ permalink raw reply [flat|nested] 5+ messages in thread
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2019-08-01 22:52 [PATCH 1/1] pseries/hotplug-memory.c: Replace nested ifs by switch-case Leonardo Bras
2019-08-02 7:21 ` David Hildenbrand
2019-08-02 12:26 ` Michael Ellerman
2019-08-02 13:18 ` Leonardo Bras
2019-08-10 10:20 ` Michael Ellerman
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