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[platform]: Disable interrupt for intel i2c-i801 driver (#16309)

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On S6100 we are seeing almost 100K interrupts per second on intels i801 SMBUS controller which affects systems performance.

We now disable the i801 driver interrupt and instead enable polling

Microsoft ADO (number only): 24910530

How I did it
Disable the interrupt by passing the interrupt disable feature argument to i2c-i801 driver

How to verify it
This fix is NOT applicable for ARM based platforms. Applicable only for intel based platforms:-

- On SN2700 its already disabled in Mellanox hw-mgmt
- Celestica DX010 and E1031
- Dell S6100 verified the interrupts are no longer incrementing.
- Arista 7260CX3

Signed-off-by: Prince George <prgeor@microsoft.com>
This commit is contained in:
Prince George 2023-09-05 10:23:57 -07:00 committed by GitHub
parent 31194124b5
commit a4e37a5cd6
No account linked to committer's email address
4 changed files with 4 additions and 3 deletions
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2
device/celestica/x86_64-cel_e1031-r0/installer.conf
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@ -1,4 +1,4 @@
CONSOLE_PORT=0x2f8
CONSOLE_DEV=1
CONSOLE_SPEED=9600
ONIE_PLATFORM_EXTRA_CMDLINE_LINUX="module_blacklist=gpio_ich processor.max_cstate=1 intel_idle.max_cstate=0"
ONIE_PLATFORM_EXTRA_CMDLINE_LINUX="module_blacklist=gpio_ich processor.max_cstate=1 intel_idle.max_cstate=0 i2c-i801.disable_features=0x10"

2
device/celestica/x86_64-cel_seastone-r0/installer.conf
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@ -1,3 +1,3 @@
CONSOLE_PORT=0x3f8
CONSOLE_DEV=0
ONIE_PLATFORM_EXTRA_CMDLINE_LINUX="module_blacklist=gpio_ich"
ONIE_PLATFORM_EXTRA_CMDLINE_LINUX="module_blacklist=gpio_ich i2c-i801.disable_features=0x10"

2
device/dell/x86_64-dell_s6100_c2538-r0/installer.conf
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@ -1,3 +1,3 @@
CONSOLE_PORT=0x2f8
CONSOLE_DEV=1
ONIE_PLATFORM_EXTRA_CMDLINE_LINUX="module_blacklist=gpio_ich,wdat_wdt acpi_no_watchdog=1 nos-config-part=/dev/sda12 logs_inram=on"
ONIE_PLATFORM_EXTRA_CMDLINE_LINUX="module_blacklist=gpio_ich,wdat_wdt acpi_no_watchdog=1 nos-config-part=/dev/sda12 logs_inram=on i2c-i801.disable_features=0x10"

1
files/Aboot/boot0.j2
View File

@ -503,6 +503,7 @@ write_platform_specific_cmdline() {
aboot_machine=arista_7260cx3_64
flash_size=28000
cmdline_add logs_inram=on
cmdline_add i2c-i801.disable_features=0x10
fi
if [ "$sid" = "Alhambra" ]; then
aboot_machine=arista_7170_64c