linux-kernel - [PATCH v7 0/4] SRF: Fix offline CPU preventing pc6 entry

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Message-ID: <20241129182232.14987-1-patryk.wlazlyn@linux.intel.com>
Date: Fri, 29 Nov 2024 19:22:28 +0100
From: Patryk Wlazlyn <patryk.wlazlyn@...ux.intel.com>
To: x86@...nel.org
Cc: linux-kernel@...r.kernel.org,
	linux-pm@...r.kernel.org,
	rafael.j.wysocki@...el.com,
	peterz@...radead.org,
	dave.hansen@...ux.intel.com,
	gautham.shenoy@....com,
	tglx@...utronix.de,
	len.brown@...el.com,
	artem.bityutskiy@...ux.intel.com,
	patryk.wlazlyn@...ux.intel.com
Subject: [PATCH v7 0/4] SRF: Fix offline CPU preventing pc6 entry

Small update, after Gautham's review and few changes around comments that
referenced old mwait_play_dead code, that I noticed after submitting the
v6. Some places referenced the old mwait_play_dead() in the comments, so
I decided to reuse the mwait_play_dead() name, so that the comments
don't have to be updated.

Changes since v6:
 * Renamed mwait_play_dead to mwait_play_dead_cpuid_hint in 1/1, so that
   mwait_play_dead name can be reused for the function that takes the
   MWAIT hint as an argument. This leaves the comments around the
   smpboot.c file that reference the old mwait_play_dead() unchanged.

 * Moved the old comment above mwait_play_dead() to
   mwait_play_dead_with_hints in patch 4/4.

 * Added missing include of asm/smp.h in arch/x86/kernel/acpi/cstate.c

 * Removed empty line added by mistake, spotted by Gautham (Thanks!)
   in arch/x86/include/asm/smp.h

 * Reworded 1/4 commit message to better describe the changes the patch
   is actually making.

Patryk Wlazlyn (4):
  x86/smp: Allow calling mwait_play_dead with an arbitrary hint
  ACPI: processor_idle: Add FFH state handling
  intel_idle: Provide the default enter_dead() handler
  x86/smp native_play_dead: Prefer cpuidle_play_dead() over
    mwait_play_dead()

 arch/x86/include/asm/smp.h    |  3 +++
 arch/x86/kernel/acpi/cstate.c | 10 ++++++++
 arch/x86/kernel/smpboot.c     | 46 ++++-------------------------------
 drivers/acpi/processor_idle.c |  2 ++
 drivers/idle/intel_idle.c     | 18 ++++++++++++--
 include/acpi/processor.h      |  5 ++++
 6 files changed, 41 insertions(+), 43 deletions(-)

-- 
2.47.1