linux/drivers/char/ipmi
Corey Minyard 84038a98b9 ipmi_si: Only schedule continuously in the thread in maintenance mode
[ Upstream commit 340ff31ab0 ]

ipmi_thread() uses back-to-back schedule() to poll for command
completion which, on some machines, can push up CPU consumption and
heavily tax the scheduler locks leading to noticeable overall
performance degradation.

This was originally added so firmware updates through IPMI would
complete in a timely manner.  But we can't kill the scheduler
locks for that one use case.

Instead, only run schedule() continuously in maintenance mode,
where firmware updates should run.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2019-10-07 18:56:39 +02:00
..
bt-bmc.c ipmi: Add or fix SPDX-License-Identifier in all files 2018-02-27 07:42:51 -06:00
ipmi_bt_sm.c ipmi: Move BT capabilities detection to the detect call 2018-08-31 08:42:59 -05:00
ipmi_devintf.c ipmi_devintf: Add an error return on invalid ioctls 2018-04-18 10:23:04 -05:00
ipmi_dmi.c ipmi: Add or fix SPDX-License-Identifier in all files 2018-02-27 07:42:51 -06:00
ipmi_dmi.h ipmi: Add or fix SPDX-License-Identifier in all files 2018-02-27 07:42:51 -06:00
ipmi_kcs_sm.c ipmi: Add or fix SPDX-License-Identifier in all files 2018-02-27 07:42:51 -06:00
ipmi_msghandler.c ipmi: fix sleep-in-atomic in free_user at cleanup SRCU user->release_barrier 2019-04-27 09:36:37 +02:00
ipmi_powernv.c ipmi: Add or fix SPDX-License-Identifier in all files 2018-02-27 07:42:51 -06:00
ipmi_poweroff.c ipmi: Rename ipmi_user_t to struct ipmi_user * 2018-04-18 10:22:55 -05:00
ipmi_si_hardcode.c ipmi: ipmi_si_hardcode.c: init si_type array to fix a crash 2019-05-16 19:41:23 +02:00
ipmi_si_hotmod.c ipmi: Add or fix SPDX-License-Identifier in all files 2018-02-27 07:42:51 -06:00
ipmi_si_intf.c ipmi_si: Only schedule continuously in the thread in maintenance mode 2019-10-07 18:56:39 +02:00
ipmi_si_mem_io.c ipmi_si: fix use-after-free of resource->name 2019-03-23 20:10:08 +01:00
ipmi_si_parisc.c ipmi: Add or fix SPDX-License-Identifier in all files 2018-02-27 07:42:51 -06:00
ipmi_si_pci.c ipmi:pci: Blacklist a Realtek "IPMI" device 2018-03-13 06:58:47 -05:00
ipmi_si_platform.c ipmi_si: Fix crash when using hard-coded device 2019-04-03 06:26:15 +02:00
ipmi_si_port_io.c ipmi_si: fix use-after-free of resource->name 2019-03-23 20:10:08 +01:00
ipmi_si_sm.h ipmi: Add or fix SPDX-License-Identifier in all files 2018-02-27 07:42:51 -06:00
ipmi_si.h ipmi_si: Fix crash when using hard-coded device 2019-04-03 06:26:15 +02:00
ipmi_smic_sm.c ipmi: Add or fix SPDX-License-Identifier in all files 2018-02-27 07:42:51 -06:00
ipmi_ssif.c ipmi:ssif: compare block number correctly for multi-part return messages 2019-05-22 07:37:43 +02:00
ipmi_watchdog.c ipmi: Rename ipmi_user_t to struct ipmi_user * 2018-04-18 10:22:55 -05:00
Kconfig ipmi: Remove the proc interface 2018-05-09 12:21:46 -05:00
kcs_bmc_aspeed.c ipmi: kcs_bmc: coding-style fixes and use new poll type 2018-02-26 09:49:21 -06:00
kcs_bmc_npcm7xx.c ipmi: NPCM7xx KCS BMC: enable interrupt to the host 2018-05-23 08:29:23 -05:00
kcs_bmc.c ipmi: kcs_bmc: don't change device name 2018-08-30 14:55:18 -05:00
kcs_bmc.h ipmi: kcs_bmc: coding-style fixes and use new poll type 2018-02-26 09:49:21 -06:00
Makefile ipmi: add an NPCM7xx KCS BMC driver 2018-04-18 10:23:12 -05:00