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| author | Dapeng Mi <dapeng1.mi@linux.intel.com> | 2026-09-17 09:52:33 +0800 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2026-09-22 11:37:46 +0200 |
| commit | 0102c8c7fdfc4bd700971daff2b94470f4eafae4 (patch) | |
| tree | 531306c2299f9a269f0a986e29f17ba972180104 /Documentation/ABI/testing/gpio-cdev | |
| download | linux-stable-0102c8c7fdfc4bd700971daff2b94470f4eafae4.tar.gz linux-stable-0102c8c7fdfc4bd700971daff2b94470f4eafae4.zip | |
perf/x86/intel: Rename DMR offcore_rsp attribute to offmodule_rspgrafted
DMR introduces Offmodule Response events in place of the legacy
Offcore Response events, but it still exposes the inherited
offcore_rsp PMU attribute for programming the corresponding MSR data.
Rename the DMR PMU attribute to offmodule_rsp so the sysfs interface
matches the underlying event name and avoids user & tooling confusion.
Signed-off-by: Dapeng Mi <dapeng1.mi@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://patch.msgid.link/20260917015234.981153-12-dapeng1.mi@linux.intel.com
Diffstat (limited to 'Documentation/ABI/testing/gpio-cdev')
| -rw-r--r-- | Documentation/ABI/testing/gpio-cdev | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/gpio-cdev b/Documentation/ABI/testing/gpio-cdev new file mode 100644 index 000000000..c9689b2a6 --- /dev/null +++ b/Documentation/ABI/testing/gpio-cdev @@ -0,0 +1,28 @@ +What: /dev/gpiochip[0-9]+ +Date: November 2015 +KernelVersion: 4.4 +Contact: linux-gpio@vger.kernel.org +Description: + The character device files /dev/gpiochip* are the interface + between GPIO chips and userspace. + + The ioctl(2)-based ABI is defined in + [include/uapi]<linux/gpio.h> and documented in + Documentation/userspace-api/gpio/chardev.rst. + + The following file operations are supported: + + open(2) + Currently the only useful flags are O_RDWR. + + ioctl(2) + Initiate various actions. + + See Documentation/userspace-api/gpio/chardev.rst + for a description of all ioctls. + + close(2) + Stops and free up the I/O contexts that was associated + with the file descriptor. + +Users: TBD |