From: Reinette Chatre <reinette.chatre@intel.com>
To: "Ilpo Järvinen" <ilpo.jarvinen@linux.intel.com>,
linux-kselftest@vger.kernel.org,
"Fenghua Yu" <fenghua.yu@intel.com>,
"Shuah Khan" <shuah@kernel.org>,
linux-kernel@vger.kernel.org
Cc: Shaopeng Tan <tan.shaopeng@jp.fujitsu.com>
Subject: Re: [PATCH v2 22/24] selftests/resctrl: Split measure_cache_vals() function
Date: Fri, 21 Apr 2023 17:21:48 -0700 [thread overview]
Message-ID: <695f71ed-46f6-e287-371d-bb11f014148d@intel.com> (raw)
In-Reply-To: <20230418114506.46788-23-ilpo.jarvinen@linux.intel.com>
Hi Ilpo,
On 4/18/2023 4:45 AM, Ilpo Järvinen wrote:
> The measure_cache_vals() function does a different thing depending on
> the test case that called it:
> - For CAT, it measures LLC perf misses 2.
What does the "2" represent?
> - For CMT, it measures LLC occupancy through resctrl.
>
> Split these two functionalities such that CMT test calls a new function
> called measure_llc_resctrl() to get LLC occupancy through resctrl and
> CAT test directly calls get_llc_perf().
>
The changelog mentions 'split' but the split does not end up the same for
the two usages. Why does this split end up with one usage moving to a direct
call (get_llc_perf()) while the other usage remains with a wrapper?
Why not open code both?
Reinette
next prev parent reply other threads:[~2023-04-22 0:22 UTC|newest]
Thread overview: 72+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-04-18 11:44 [PATCH v2 00/24] selftests/resctrl: Fixes, cleanups, and rewritten CAT test Ilpo Järvinen
2023-04-18 11:44 ` [PATCH v2 01/24] selftests/resctrl: Add resctrl.h into build deps Ilpo Järvinen
2023-04-22 0:07 ` Reinette Chatre
2023-04-18 11:44 ` [PATCH v2 02/24] selftests/resctrl: Check also too low values for CBM bits Ilpo Järvinen
2023-04-22 0:08 ` Reinette Chatre
2023-04-24 10:46 ` Ilpo Järvinen
2023-04-18 11:44 ` [PATCH v2 03/24] selftests/resctrl: Move resctrl FS mount/umount to higher level Ilpo Järvinen
2023-04-22 0:09 ` Reinette Chatre
2023-04-24 14:58 ` Ilpo Järvinen
2023-04-18 11:44 ` [PATCH v2 04/24] selftests/resctrl: Remove mum_resctrlfs Ilpo Järvinen
2023-04-22 0:11 ` Reinette Chatre
2023-04-24 14:55 ` Ilpo Järvinen
2023-04-18 11:44 ` [PATCH v2 05/24] selftests/resctrl: Make span unsigned long everywhere Ilpo Järvinen
2023-04-22 0:12 ` Reinette Chatre
2023-04-24 15:05 ` Ilpo Järvinen
2023-04-18 11:44 ` [PATCH v2 06/24] selftests/resctrl: Express span in bytes Ilpo Järvinen
2023-04-22 0:12 ` Reinette Chatre
2023-04-24 15:31 ` Ilpo Järvinen
2023-04-18 11:44 ` [PATCH v2 07/24] selftests/resctrl: Remove duplicated preparation for span arg Ilpo Järvinen
2023-04-22 0:14 ` Reinette Chatre
2023-04-24 15:41 ` Ilpo Järvinen
2023-04-18 11:44 ` [PATCH v2 08/24] selftests/resctrl: Don't use variable argument list for ->setup() Ilpo Järvinen
2023-04-18 11:44 ` [PATCH v2 09/24] selftests/resctrl: Remove "malloc_and_init_memory" param from run_fill_buf() Ilpo Järvinen
2023-04-18 11:44 ` [PATCH v2 10/24] selftests/resctrl: Split run_fill_buf() to alloc, work, and dealloc helpers Ilpo Järvinen
2023-04-22 0:16 ` Reinette Chatre
2023-04-24 16:01 ` Ilpo Järvinen
2023-04-24 16:32 ` Reinette Chatre
2023-04-18 11:44 ` [PATCH v2 11/24] selftests/resctrl: Remove start_buf local variable from buffer alloc func Ilpo Järvinen
2023-04-22 0:16 ` Reinette Chatre
2023-04-18 11:44 ` [PATCH v2 12/24] selftests/resctrl: Don't pass test name to fill_buf Ilpo Järvinen
2023-04-18 11:44 ` [PATCH v2 13/24] selftests/resctrl: Add flush_buffer() " Ilpo Järvinen
2023-04-22 0:16 ` Reinette Chatre
2023-04-18 11:44 ` [PATCH v2 14/24] selftests/resctrl: Remove test type checks from cat_val() Ilpo Järvinen
2023-04-18 11:44 ` [PATCH v2 15/24] selftests/resctrl: Refactor get_cbm_mask() Ilpo Järvinen
2023-04-22 0:17 ` Reinette Chatre
2023-05-31 6:03 ` Shaopeng Tan (Fujitsu)
2023-05-31 9:24 ` Ilpo Järvinen
2023-04-18 11:44 ` [PATCH v2 16/24] selftests/resctrl: Create cache_alloc_size() helper Ilpo Järvinen
2023-04-22 0:19 ` Reinette Chatre
2023-04-24 16:28 ` Ilpo Järvinen
2023-04-24 16:45 ` Reinette Chatre
2023-04-18 11:44 ` [PATCH v2 17/24] selftests/resctrl: Replace count_bits with count_consecutive_bits() Ilpo Järvinen
2023-04-22 0:20 ` Reinette Chatre
2023-04-25 11:41 ` Ilpo Järvinen
2023-04-25 14:28 ` Reinette Chatre
2023-05-31 7:25 ` Shaopeng Tan (Fujitsu)
2023-05-31 9:35 ` Ilpo Järvinen
2023-06-01 6:20 ` Shaopeng Tan (Fujitsu)
2023-04-18 11:45 ` [PATCH v2 18/24] selftests/resctrl: Exclude shareable bits from schemata in CAT test Ilpo Järvinen
2023-04-18 11:45 ` [PATCH v2 19/24] selftests/resctrl: Pass the real number of tests to show_cache_info() Ilpo Järvinen
2023-04-22 0:20 ` Reinette Chatre
2023-04-18 11:45 ` [PATCH v2 20/24] selftests/resctrl: Move CAT/CMT test global vars to func they are used Ilpo Järvinen
2023-04-22 0:20 ` Reinette Chatre
2023-04-18 11:45 ` [PATCH v2 21/24] selftests/resctrl: Read in less obvious order to defeat prefetch optimizations Ilpo Järvinen
2023-05-31 5:33 ` Shaopeng Tan (Fujitsu)
2023-05-31 9:17 ` Ilpo Järvinen
2023-06-01 6:15 ` Shaopeng Tan (Fujitsu)
2023-06-02 13:51 ` Ilpo Järvinen
2023-06-02 14:39 ` Reinette Chatre
2023-06-14 13:02 ` Ilpo Järvinen
2023-06-16 5:30 ` Shaopeng Tan (Fujitsu)
2023-06-16 6:44 ` Ilpo Järvinen
2023-04-18 11:45 ` [PATCH v2 22/24] selftests/resctrl: Split measure_cache_vals() function Ilpo Järvinen
2023-04-22 0:21 ` Reinette Chatre [this message]
2023-04-18 11:45 ` [PATCH v2 23/24] selftests/resctrl: Split show_cache_info() to test specific and generic parts Ilpo Järvinen
2023-04-22 0:22 ` Reinette Chatre
2023-04-18 11:45 ` [PATCH v2 24/24] selftests/resctrl: Rewrite Cache Allocation Technology (CAT) test Ilpo Järvinen
2023-04-22 0:32 ` Reinette Chatre
2023-04-26 13:58 ` Ilpo Järvinen
2023-04-26 23:35 ` Reinette Chatre
2023-04-27 8:04 ` Ilpo Järvinen
2023-04-27 15:15 ` Reinette Chatre
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