linux-kernel - Re: [PATCH v5 1/2] x86/resctrl: Rename pseudo_lock

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Message-ID: <ed992a7f-7b1d-415d-8d90-1fbb8b619a8c@shopee.com>
Date: Tue, 19 Mar 2024 14:27:20 +0800
From: Haifeng Xu <haifeng.xu@...pee.com>
To: Reinette Chatre <reinette.chatre@...el.com>, james.morse@....com
Cc: fenghua.yu@...el.com, babu.moger@....com, tglx@...utronix.de,
 mingo@...hat.com, bp@...en8.de, dave.hansen@...ux.intel.com, hpa@...or.com,
 peternewman@...gle.com, x86@...nel.org, linux-kernel@...r.kernel.org,
 corbet@....net, linux-doc@...r.kernel.org
Subject: Re: [PATCH v5 1/2] x86/resctrl: Rename pseudo_lock_event.h to trace.h



On 2024/3/14 06:46, Reinette Chatre wrote:
> Hi Haifeng,
> 
> On 3/7/2024 11:41 PM, Haifeng Xu wrote:
>> Now only pseudo-locking part uses tracepoints to do event tracking, but
>> other parts of resctrl may need new tracepoints. It is unnecessary to
>> create separate header files and define CREATE_TRACE_POINTS in different
>> c files which fragments the resctrl tracing.
>>
>> Therefore, give the resctrl tracepoint header file a generic name to
>> support its use for tracepoints that are not specific to pseudo-locking.
>>
>> No functional change.
>>
>> Signed-off-by: Haifeng Xu <haifeng.xu@...pee.com>
>> Suggested-by: Reinette Chatre <reinette.chatre@...el.com>
>> ---
>>  arch/x86/kernel/cpu/resctrl/pseudo_lock.c                   | 2 +-
>>  .../x86/kernel/cpu/resctrl/{pseudo_lock_event.h => trace.h} | 6 +++---
>>  2 files changed, 4 insertions(+), 4 deletions(-)
>>  rename arch/x86/kernel/cpu/resctrl/{pseudo_lock_event.h => trace.h} (88%)
>>
>> diff --git a/arch/x86/kernel/cpu/resctrl/pseudo_lock.c b/arch/x86/kernel/cpu/resctrl/pseudo_lock.c
>> index 884b88e25141..492c8e28c4ce 100644
>> --- a/arch/x86/kernel/cpu/resctrl/pseudo_lock.c
>> +++ b/arch/x86/kernel/cpu/resctrl/pseudo_lock.c
>> @@ -31,7 +31,7 @@
>>  #include "internal.h"
>>  
>>  #define CREATE_TRACE_POINTS
>> -#include "pseudo_lock_event.h"
>> +#include "trace.h"
>>  
>>  /*
>>   * The bits needed to disable hardware prefetching varies based on the
>> diff --git a/arch/x86/kernel/cpu/resctrl/pseudo_lock_event.h b/arch/x86/kernel/cpu/resctrl/trace.h
>> similarity index 88%
>> rename from arch/x86/kernel/cpu/resctrl/pseudo_lock_event.h
>> rename to arch/x86/kernel/cpu/resctrl/trace.h
>> index 428ebbd4270b..ed5c66b8ab0b 100644
>> --- a/arch/x86/kernel/cpu/resctrl/pseudo_lock_event.h
>> +++ b/arch/x86/kernel/cpu/resctrl/trace.h
>> @@ -2,7 +2,7 @@
>>  #undef TRACE_SYSTEM
>>  #define TRACE_SYSTEM resctrl
>>  
>> -#if !defined(_TRACE_PSEUDO_LOCK_H) || defined(TRACE_HEADER_MULTI_READ)
>> +#if !defined(_TRACE_RESCTRL_H) || defined(TRACE_HEADER_MULTI_READ)
>>  #define _TRACE_PSEUDO_LOCK_H
> 
> The above #define should match the new name also.

Sorry, I forgot to replace it with 'RESCTRL' in this version.
Thanks for pointing that out!
> 
>>  
>>  #include <linux/tracepoint.h>
>> @@ -35,9 +35,9 @@ TRACE_EVENT(pseudo_lock_l3,
>>  	    TP_printk("hits=%llu miss=%llu",
>>  		      __entry->l3_hits, __entry->l3_miss));
>>  
>> -#endif /* _TRACE_PSEUDO_LOCK_H */
>> +#endif /* _TRACE_RESCTRL_H */
>>  
>>  #undef TRACE_INCLUDE_PATH
>>  #define TRACE_INCLUDE_PATH .
>> -#define TRACE_INCLUDE_FILE pseudo_lock_event
>> +#define TRACE_INCLUDE_FILE trace
>>  #include <trace/define_trace.h>
> 
> The rest looks good.
> 
> Thank you.
> 
> Reinette