linux-stable/drivers/char
Corey Minyard 31f643615f 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 18:54:59 +02:00
..
agp agp: uninorth: make two functions static 2018-06-21 04:02:56 +09:00
hw_random hwrng: core - don't wait on add_early_randomness() 2019-10-05 12:48:12 +02:00
ipmi ipmi_si: Only schedule continuously in the thread in maintenance mode 2019-10-07 18:54:59 +02:00
mwave char/mwave: fix potential Spectre v1 vulnerability 2019-01-31 08:13:43 +01:00
pcmcia
tpm tpm: Fix TPM 1.2 Shutdown sequence to prevent future TPM operations 2019-10-07 18:54:56 +02:00
xilinx_hwicap
xillybus
apm-emulation.c
applicom.c applicom: Fix potential Spectre v1 vulnerabilities 2019-03-13 14:03:10 -07:00
applicom.h
bfin-otp.c
bsr.c
ds1302.c
ds1620.c
dsp56k.c
dtlk.c
efirtc.c
generic_nvram.c
hangcheck-timer.c
hpet.c hpet: Fix division by zero in hpet_time_div() 2019-07-31 07:28:58 +02:00
Kconfig tty: mark Siemens R3964 line discipline as BROKEN 2019-04-17 08:37:44 +02:00
lp.c
Makefile
mbcs.c
mbcs.h
mem.c /dev/mem: Bail out upon SIGKILL. 2019-10-05 12:48:11 +02:00
misc.c
mspec.c
nsc_gpio.c
nvram.c
nwbutton.c
nwbutton.h
nwflash.c
pc8736x_gpio.c
powernv-op-panel.c
ppdev.c
ps3flash.c
random.c random: add a spinlock_t to struct batched_entropy 2019-05-31 06:47:25 -07:00
raw.c
rtc.c
scx200_gpio.c
snsc.c
snsc.h
snsc_event.c
sonypi.c
tb0219.c
tile-srom.c
tlclk.c
toshiba.c
ttyprintk.c
uv_mmtimer.c
virtio_console.c virtio_console: initialize vtermno value for ports 2019-05-31 06:47:32 -07:00