From: Maulik Shah <mkshah@codeaurora.org>
To: agross@kernel.org, bjorn.andersson@linaro.org
Cc: linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org,
ulf.hansson@linaro.org, swboyd@chromium.org,
dianders@chromium.org, rnayak@codeaurora.org,
ilina@codeaurora.org, lsrao@codeaurora.org,
Maulik Shah <mkshah@codeaurora.org>
Subject: [RESEND v2 0/2] Modularize RPMH driver
Date: Mon, 5 Oct 2020 11:29:54 +0530 [thread overview]
Message-ID: <1601877596-32676-1-git-send-email-mkshah@codeaurora.org> (raw)
Resending the patches rebasing on top of latest linux-next (next-20201002)
Changes in v2:
- Update commit message in patch 1
- send [4] again instead of revert's revert in patch 2.
This series is to modularize RPMH driver
The tracepoint in RPMH driver was changed to _rcuidle variant based on the
test results of unmerged series [1] where .power_off callback from genpd
reported RCU warnings.
The series which finally got merged [2] uses CPU PM notifications
and genpd .power_off callback is not implemented in RPMH driver to invoke
rpmh_flush(). The CPU PM notifications are done with RCU non idle in kernel
(see cpu_pm_notify() uses rcu_irq_enter_irqson() before notifications)
However using _rcuidle variant prevented RPMH driver to compile as module
since these _rcuidle are not exported symbols for tracepoints.
This seris reverts the change [3] to remove _rcuidle variant for tracepoint
as its no more valid test case (genpd .power_off is not implemented)
and bring backs the change [4] that was reverted due to _rcuidle preventing
to become modular.
[1] https://patchwork.kernel.org/project/linux-arm-msm/list/?series=243931
[2] https://patchwork.kernel.org/project/linux-arm-msm/list/?series=269733
[3] https://lore.kernel.org/r/20200115013751.249588-1-swboyd@chromium.org
[4] https://lore.kernel.org/r/20200326224459.105170-3-john.stultz@linaro.org
John Stultz (1):
soc: qcom: rpmh: Allow RPMH driver to be loaded as a module
Maulik Shah (1):
Revert "drivers: qcom: rpmh-rsc: Use rcuidle tracepoints for rpmh"
drivers/soc/qcom/Kconfig | 2 +-
drivers/soc/qcom/rpmh-rsc.c | 7 ++++++-
2 files changed, 7 insertions(+), 2 deletions(-)
--
QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member
of Code Aurora Forum, hosted by The Linux Foundation
next reply other threads:[~2020-10-05 6:00 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-05 5:59 Maulik Shah [this message]
2020-10-05 5:59 ` [RESEND v2 1/2] Revert "drivers: qcom: rpmh-rsc: Use rcuidle tracepoints for rpmh" Maulik Shah
2020-10-05 5:59 ` [RESEND v2 2/2] soc: qcom: rpmh: Allow RPMH driver to be loaded as a module Maulik Shah
2020-10-19 7:26 ` [RESEND v2 0/2] Modularize RPMH driver Maulik Shah
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