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Commit c9af3fa9e1e3e5154649991a14b74f3a2dee19ee

Authored by Heiko Carstens
Committed by Martin Schwidefsky
1 parent 0576fc703a
Exists in master and in 39 other branches 8mp-imx_5.4.70_2.3.0, 8qm-imx_5.4.70_2.3.0, emb_imx_lf-5.15.y, emb_lf-6.1.y, imx_3.0.35_4.1.0, imx_3.10.17_1.0.1_ga, imx_3.10.53_1.1.0_ga, imx_3.14.28_1.0.0_ga, imx_4.1.15_1.0.0_ga, pitx_8mp_lf-5.10.y, rt-smarc-imx_4.1.15_1.0.0_ga, rt_linux_5.15.71, smarc-8m-android-11.0.0_2.0.0, smarc-imx6_4.14.98_2.0.0_ga, smarc-imx6_4.9.88_2.0.0_ga, smarc-imx7_4.14.98_2.0.0_ga, smarc-imx7_4.9.11_1.0.0_ga, smarc-imx7_4.9.88_2.0.0_ga, smarc-imx_3.10.53_1.1.0_ga, smarc-imx_3.14.28_1.0.0_ga, smarc-imx_4.1.15_1.0.0_ga, smarc-imx_4.9.11_1.0.0_ga, smarc-imx_4.9.51_imx8m_ga, smarc-imx_4.9.88_2.0.0_ga, smarc-m6.0.1_2.1.0-ga, smarc-n7.1.2_2.0.0-ga, smarc-rel_imx_4.1.15_1.2.0_ga, smarc_8m_00d0_imx_4.14.98_2.0.0_ga, smarc_8m_imx_4.14.78_1.0.0_ga, smarc_8m_imx_4.14.98_2.0.0_ga, smarc_8m_imx_4.19.35_1.1.0, smarc_8mm_imx_4.14.78_1.0.0_ga, smarc_8mm_imx_4.14.98_2.0.0_ga, smarc_8mm_imx_4.19.35_1.1.0, smarc_8mm_imx_5.4.24_2.1.0, smarc_8mp_lf-5.10.y, smarc_8mq_imx_5.4.24_2.1.0, smarc_8mq_lf-5.10.y, smarc_imx_lf-5.15.y

[S390] topology: change default 

Switch default value of the kernel parameter 'topology' from off to on.
Various performance measurements have finally shown that there are no
(known) regressions anywhere.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

Showing 2 changed files with 4 additions and 4 deletions Side-by-side Diff

Documentation/kernel-parameters.txt
Diff comments   View file @ c9af3fa
... ... @@ -2438,7 +2438,7 @@
2438 2438 topology informations if the hardware supports these.
2439 2439 The scheduler will make use of these informations and
2440 2440 e.g. base its process migration decisions on it.
2441   - Default is off.
  2441 + Default is on.
2442 2442  
2443 2443 tp720= [HW,PS2]
2444 2444  
arch/s390/kernel/topology.c
Diff comments   View file @ c9af3fa
... ... @@ -63,7 +63,7 @@
63 63 cpumask_t mask;
64 64 };
65 65  
66   -static int topology_enabled;
  66 +static int topology_enabled = 1;
67 67 static void topology_work_fn(struct work_struct *work);
68 68 static struct tl_info *tl_info;
69 69 static int machine_has_topology;
70 70  
... ... @@ -311,9 +311,9 @@
311 311  
312 312 static int __init early_parse_topology(char *p)
313 313 {
314   - if (strncmp(p, "on", 2))
  314 + if (strncmp(p, "off", 3))
315 315 return 0;
316   - topology_enabled = 1;
  316 + topology_enabled = 0;
317 317 return 0;
318 318 }
319 319 early_param("topology", early_parse_topology);