| Message ID | 20210505132845.23698-1-catalin.marinas@arm.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | arm64: Correct the stated event stream frequency | expand |
On Wed, May 05, 2021 at 02:28:45PM +0100, Catalin Marinas wrote: > It should be 10KHz, matching the ARCH_TIMER_EVT_STREAM_PERIOD_US of > 100us. > > Fixes: 611a7bc74ed2 ("arm64: docs: describe ELF hwcaps") > Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> > Cc: Mark Rutland <mark.rutland@arm.com> It might be worth being more explicit in the commit message, to make it clear that this is just a documentation bug. e.g. | In 2013 we introduced a (roughly) 10KHz event stream in commit: | | 037f637767a82907 ("drivers: clocksource: add support for ARM architected timer event stream") | | ... but in 2017 when we documented this in commit: | | 611a7bc74ed2dcba ("arm64: docs: describe ELF hwcaps") | | ... we erroneously stated that the frequency was roughly 100KHz. | | This patch corrects the documentation. Either way: Acked-by: Mark Rutland <mark.rutland@arm.com> Mark. > --- > Documentation/arm64/elf_hwcaps.rst | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/Documentation/arm64/elf_hwcaps.rst b/Documentation/arm64/elf_hwcaps.rst > index 87821662eeb2..ec1a5a63c1d0 100644 > --- a/Documentation/arm64/elf_hwcaps.rst > +++ b/Documentation/arm64/elf_hwcaps.rst > @@ -74,7 +74,7 @@ HWCAP_ASIMD > > HWCAP_EVTSTRM > The generic timer is configured to generate events at a frequency of > - approximately 100KHz. > + approximately 10KHz. > > HWCAP_AES > Functionality implied by ID_AA64ISAR0_EL1.AES == 0b0001.
On Wed, 5 May 2021 14:28:45 +0100, Catalin Marinas wrote: > It should be 10KHz, matching the ARCH_TIMER_EVT_STREAM_PERIOD_US of > 100us. Applied to arm64 (for-next/core), thanks! [1/1] arm64: Correct the stated event stream frequency https://git.kernel.org/arm64/c/5d8505fd039c
diff --git a/Documentation/arm64/elf_hwcaps.rst b/Documentation/arm64/elf_hwcaps.rst index 87821662eeb2..ec1a5a63c1d0 100644 --- a/Documentation/arm64/elf_hwcaps.rst +++ b/Documentation/arm64/elf_hwcaps.rst @@ -74,7 +74,7 @@ HWCAP_ASIMD HWCAP_EVTSTRM The generic timer is configured to generate events at a frequency of - approximately 100KHz. + approximately 10KHz. HWCAP_AES Functionality implied by ID_AA64ISAR0_EL1.AES == 0b0001.
It should be 10KHz, matching the ARCH_TIMER_EVT_STREAM_PERIOD_US of 100us. Fixes: 611a7bc74ed2 ("arm64: docs: describe ELF hwcaps") Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Cc: Mark Rutland <mark.rutland@arm.com> --- Documentation/arm64/elf_hwcaps.rst | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)