From: Daniel Thompson <daniel.thompson@linaro.org>
To: Russell King <linux@arm.linux.org.uk>
Cc: Daniel Thompson <daniel.thompson@linaro.org>,
linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, patches@linaro.org,
linaro-kernel@lists.linaro.org,
John Stultz <john.stultz@linaro.org>,
Thomas Gleixner <tglx@linutronix.de>,
Sumit Semwal <sumit.semwal@linaro.org>
Subject: [PATCH 3.17-rc4 v5 0/6] arm: Implement arch_trigger_all_cpu_backtrace
Date: Thu, 11 Sep 2014 12:31:12 +0100 [thread overview]
Message-ID: <1410435078-28462-1-git-send-email-daniel.thompson@linaro.org> (raw)
In-Reply-To: <1410272111-30516-1-git-send-email-daniel.thompson@linaro.org>
This patchset implements arch_trigger_all_cpu_backtrace for arm.
Non-maskable signalling relies on the kernel being able to access FIQ
and therefore, for devices that implement TrustZone, it will work only on
systems that boot the kernel in secure mode.
Tested on Freescale iMX.6 (both via SysRq-l and by deliberately locking
up the kernel with CONFIG_DEBUG_SPINLOCK=y).
Changes since v4:
* Rebased on 3.17-rc4.
* Removed a spurious line from the final "glue it together" patch
that broke the build.
Changes since v3:
* Replaced push/pop with stmfd/ldmfd respectively (review of Nicolas
Pitre).
* Really fix bad pt_regs pointer generation in __fiq_abt.
* Remove fiq_safe_migration_lock and associated logic in
gic_raise_softirq() (review of Russell King)
* Restructured to introduce the default FIQ handler first, before the
new features (review of Russell King).
Changes since v2:
* Removed redundant header guards from arch/arm64/include/asm/fiq.h
(review of Catalin Marinas).
* Moved svc_exit_via_fiq macro to entry-header.S (review of Nicolas
Pitre).
Changes since v1:
* Restructured to sit nicely on a similar FYI patchset from Russell
King. It now effectively replaces the work in progress final patch
with something much more complete.
* Implemented (and tested) a Thumb-2 implementation of svc_exit_via_fiq
(review of Nicolas Pitre)
* Dropped the GIC group 0 workaround patch. The issue of FIQ interrupts
being acknowledged by the IRQ handler does still exist but should be
harmless because the IRQ handler will still wind up calling
ipi_cpu_backtrace().
* Removed any dependency on CONFIG_FIQ; all cpu backtrace effectively
becomes a platform feature (although the use of non-maskable
interrupts to implement it is best effort rather than guaranteed).
* Better comments highlighting usage of RAZ/WI registers (and parts of
registers) in the GIC code.
Changes *before* v1:
* This patchset is a hugely cut-down successor to "[PATCH v11 00/19]
arm: KGDB NMI/FIQ support". Thanks to Thomas Gleixner for suggesting
the new structure. For historic details see:
https://lkml.org/lkml/2014/9/2/227
* Fix bug in __fiq_abt (no longer passes a bad struct pt_regs value).
In fixing this we also remove the useless indirection previously
found in the fiq_handler macro.
* Make default fiq handler "always on" by migrating from fiq.c to
traps.c and replace do_unexp_fiq with the new handler (review
of Russell King).
* Add arm64 version of fiq.h (review of Russell King)
* Removed conditional branching and code from irq-gic.c, this is
replaced by much simpler code that relies on the GIC specification's
heavy use of read-as-zero/write-ignored (review of Russell King)
Daniel Thompson (5):
arm: fiq: Replace default FIQ handler
arm64: Introduce dummy version of asm/fiq.h
irqchip: gic: Add support for IPI FIQ
ARM: add basic support for on-demand backtrace of other CPUs
arm: smp: Handle ipi_cpu_backtrace() using FIQ (if available)
Russell King (1):
ARM: remove unused do_unexp_fiq() function
arch/arm/include/asm/irq.h | 5 ++
arch/arm/include/asm/smp.h | 3 +
arch/arm/kernel/entry-armv.S | 95 ++++++++++++++++++++++++---
arch/arm/kernel/entry-header.S | 47 ++++++++++++++
arch/arm/kernel/setup.c | 8 ++-
arch/arm/kernel/smp.c | 64 ++++++++++++++++++
arch/arm/kernel/traps.c | 32 ++++++++-
arch/arm64/include/asm/fiq.h | 8 +++
drivers/irqchip/irq-gic.c | 140 ++++++++++++++++++++++++++++++++++++++--
include/linux/irqchip/arm-gic.h | 3 +
10 files changed, 386 insertions(+), 19 deletions(-)
create mode 100644 arch/arm64/include/asm/fiq.h
--
1.9.3
next prev parent reply other threads:[~2014-09-11 11:31 UTC|newest]
Thread overview: 194+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1403174303-25456-1-git-send-email-daniel.thompson@linaro.org>
2014-06-24 15:18 ` [PATCH v6 0/4] arm: KGDB NMI/FIQ support Daniel Thompson
2014-06-24 15:18 ` [PATCH v6 1/4] arm: fiq: Add callbacks to manage FIQ routings Daniel Thompson
2014-06-24 15:44 ` Nicolas Pitre
2014-06-24 15:58 ` Daniel Thompson
2014-06-24 15:18 ` [PATCH v6 2/4] arm: fiq: Allow EOI to be communicated to the intc Daniel Thompson
2014-06-24 15:46 ` Nicolas Pitre
2014-06-24 15:18 ` [PATCH v6 3/4] ARM: Move some macros from entry-armv to entry-header Daniel Thompson
2014-06-24 15:53 ` Nicolas Pitre
2014-06-24 15:18 ` [PATCH v6 4/4] ARM: Add KGDB/KDB FIQ debugger generic code Daniel Thompson
2014-06-24 16:08 ` Russell King - ARM Linux
2014-06-26 9:54 ` Daniel Thompson
2014-06-30 13:54 ` Daniel Thompson
2014-06-24 16:22 ` Nicolas Pitre
2014-06-26 12:48 ` Daniel Thompson
2014-06-30 8:53 ` [PATCH v7 0/4] arm: KGDB NMI/FIQ support Daniel Thompson
2014-06-30 8:53 ` [PATCH v7 1/4] arm: fiq: Add callbacks to manage FIQ routings Daniel Thompson
2014-06-30 8:53 ` [PATCH v7 2/4] arm: fiq: Allow EOI to be communicated to the intc Daniel Thompson
2014-06-30 8:53 ` [PATCH v7 3/4] ARM: Move some macros from entry-armv to entry-header Daniel Thompson
2014-06-30 8:53 ` [PATCH v7 4/4] ARM: Add KGDB/KDB FIQ debugger generic code Daniel Thompson
2014-07-10 8:03 ` [PATCH v8 0/4] arm: KGDB NMI/FIQ support Daniel Thompson
2014-07-10 8:03 ` [PATCH v8 1/4] arm: fiq: Add callbacks to manage FIQ routings Daniel Thompson
2014-07-10 8:03 ` [PATCH v8 2/4] arm: fiq: Allow ACK and EOI to be passed to the intc Daniel Thompson
2014-07-10 8:03 ` [PATCH v8 3/4] ARM: Move some macros from entry-armv to entry-header Daniel Thompson
2014-07-10 8:03 ` [PATCH v8 4/4] ARM: Add KGDB/KDB FIQ debugger generic code Daniel Thompson
2014-08-13 21:45 ` Russell King - ARM Linux
2014-08-14 10:48 ` Daniel Thompson
2014-08-14 11:15 ` [RFC PATCH 0/3] arm: FIQ IPI support Daniel Thompson
2014-08-14 11:15 ` [RFC PATCH 1/3] arm: smp: Introduce a special IPI signalled using FIQ Daniel Thompson
2014-08-14 11:15 ` [RFC PATCH 2/3] arm: kgdb: Add support for IPI FIQ roundup Daniel Thompson
2014-08-14 11:15 ` [RFC PATCH 3/3] irqchip: gic: Add support for IPI FIQ Daniel Thompson
2014-08-14 12:36 ` [PATCH v8 4/4] ARM: Add KGDB/KDB FIQ debugger generic code Russell King - ARM Linux
2014-08-14 15:02 ` Daniel Thompson
2014-07-14 13:51 ` [PATCH v8 0/4] arm: KGDB NMI/FIQ support Harro Haan
2014-07-15 9:41 ` Daniel Thompson
2014-07-15 13:04 ` Harro Haan
2014-07-15 14:52 ` Daniel Thompson
2014-07-15 15:59 ` Harro Haan
2014-07-15 17:08 ` Daniel Thompson
2014-07-16 17:15 ` Harro Haan
2014-07-17 9:01 ` Daniel Thompson
2014-07-15 18:45 ` Marek Vasut
2014-07-16 12:54 ` Daniel Thompson
2014-07-16 17:21 ` Harro Haan
2014-07-17 9:20 ` Daniel Thompson
2014-08-18 13:40 ` [PATCH v9 00/16] " Daniel Thompson
2014-08-18 13:40 ` [PATCH v9 01/16] arm: fiq: Add callbacks to manage FIQ routings Daniel Thompson
2014-08-18 13:40 ` [PATCH v9 02/16] arm: fiq: Allow ACK and EOI to be passed to the intc Daniel Thompson
2014-08-18 13:40 ` [PATCH v9 03/16] arm: fiq: Replace default FIQ handler Daniel Thompson
2014-08-18 13:40 ` [PATCH v9 04/16] arm: smp: Introduce a special IPI signalled using FIQ Daniel Thompson
2014-08-18 13:40 ` [PATCH v9 05/16] arm: KGDB/KDB FIQ support Daniel Thompson
2014-08-19 16:45 ` [PATCH v10 00/19] arm: KGDB NMI/FIQ support Daniel Thompson
2014-08-19 16:45 ` [PATCH v10 01/19] arm: fiq: Add callbacks to manage FIQ routings Daniel Thompson
2014-08-19 16:45 ` [PATCH v10 02/19] arm: fiq: Allow ACK and EOI to be passed to the intc Daniel Thompson
2014-08-19 16:45 ` [PATCH v10 03/19] arm: fiq: Replace default FIQ handler Daniel Thompson
2014-08-19 17:37 ` Russell King - ARM Linux
2014-08-19 18:12 ` Daniel Thompson
2014-08-28 15:01 ` Russell King - ARM Linux
2014-08-28 15:43 ` Paul E. McKenney
2014-08-28 15:54 ` Daniel Thompson
2014-08-28 16:15 ` Paul E. McKenney
2014-09-02 11:03 ` Daniel Thompson
2014-09-02 11:36 ` Russell King - ARM Linux
2014-09-02 11:49 ` Daniel Thompson
2014-09-02 14:23 ` Paul E. McKenney
2014-09-02 16:42 ` Russell King - ARM Linux
2014-09-03 10:21 ` Daniel Thompson
2014-09-03 19:34 ` Russell King - ARM Linux
2014-09-04 9:09 ` Daniel Thompson
2014-09-04 9:45 ` Russell King - ARM Linux
2014-09-04 10:04 ` Daniel Thompson
2014-08-19 16:45 ` [PATCH v10 04/19] arm: smp: Introduce a special IPI signalled using FIQ Daniel Thompson
2014-08-19 16:45 ` [PATCH v10 05/19] arm: KGDB/KDB FIQ support Daniel Thompson
2014-08-19 16:45 ` [PATCH v10 06/19] irqchip: gic: Provide support for interrupt grouping Daniel Thompson
2014-08-19 16:45 ` [PATCH v10 07/19] irqchip: gic: Add support for FIQ management Daniel Thompson
2014-08-19 16:45 ` [PATCH v10 08/19] irqchip: gic: Remove spin locks from eoi_irq Daniel Thompson
2014-08-19 16:45 ` [PATCH v10 09/19] irqchip: gic: Add support for IPI FIQ Daniel Thompson
2014-08-19 16:46 ` [PATCH v10 10/19] irqchip: gic: Group 0 workaround Daniel Thompson
2014-08-19 16:46 ` [PATCH v10 11/19] irqchip: vic: Add support for FIQ management Daniel Thompson
2014-08-19 16:46 ` [PATCH v10 12/19] serial: kgdb_nmi: No CON_ENABLED by default Daniel Thompson
2014-08-19 16:46 ` [PATCH v10 13/19] serial: amba-pl011: Use container_of() to get uart_amba_port Daniel Thompson
2014-08-19 16:46 ` [PATCH v10 14/19] serial: amba-pl011: Move pl011_hwinit() Daniel Thompson
2014-08-19 16:46 ` [PATCH v10 15/19] serial: amba-pl011: Pass FIQ information to KGDB Daniel Thompson
2014-08-19 16:46 ` [PATCH v10 16/19] serial: asc: Add support for KGDB's FIQ/NMI mode Daniel Thompson
2014-08-19 16:46 ` [PATCH v10 17/19] serial: asc: Adopt readl_/writel_relaxed() Daniel Thompson
2014-08-19 16:46 ` [PATCH v10 18/19] serial: imx: clean up imx_poll_get_char() Daniel Thompson
2014-08-19 16:46 ` [PATCH v10 19/19] serial: imx: Add support for KGDB's FIQ/NMI mode Daniel Thompson
2014-09-02 13:00 ` [PATCH v11 00/19] arm: KGDB NMI/FIQ support Daniel Thompson
2014-09-02 13:00 ` [PATCH v11 01/19] arm: fiq: Add callbacks to manage FIQ routings Daniel Thompson
2014-09-02 18:51 ` Russell King - ARM Linux
2014-09-03 0:03 ` Thomas Gleixner
2014-09-03 8:27 ` Daniel Thompson
2014-09-02 13:00 ` [PATCH v11 02/19] arm: fiq: Allow ACK and EOI to be passed to the intc Daniel Thompson
2014-09-02 13:00 ` [PATCH v11 03/19] arm: fiq: Replace default FIQ handler Daniel Thompson
2014-09-02 13:00 ` [PATCH v11 04/19] arm: smp: Introduce a special IPI signalled using FIQ Daniel Thompson
2014-09-02 13:00 ` [PATCH v11 05/19] arm: KGDB/KDB FIQ support Daniel Thompson
2014-09-02 13:00 ` [PATCH v11 06/19] irqchip: gic: Provide support for interrupt grouping Daniel Thompson
2014-09-02 19:33 ` Russell King - ARM Linux
2014-09-02 21:36 ` Catalin Marinas
2014-09-03 9:44 ` Daniel Thompson
2014-09-03 9:28 ` Daniel Thompson
2014-09-02 13:00 ` [PATCH v11 07/19] irqchip: gic: Add support for FIQ management Daniel Thompson
2014-09-02 19:36 ` Russell King - ARM Linux
2014-09-02 13:00 ` [PATCH v11 08/19] irqchip: gic: Remove spin locks from eoi_irq Daniel Thompson
2014-09-02 13:00 ` [PATCH v11 09/19] irqchip: gic: Add support for IPI FIQ Daniel Thompson
2014-09-02 13:00 ` [PATCH v11 10/19] irqchip: gic: Group 0 workaround Daniel Thompson
2014-09-02 13:00 ` [PATCH v11 11/19] irqchip: vic: Add support for FIQ management Daniel Thompson
2014-09-02 19:40 ` Russell King - ARM Linux
2014-09-02 13:00 ` [PATCH v11 12/19] serial: kgdb_nmi: No CON_ENABLED by default Daniel Thompson
2014-09-02 13:00 ` [PATCH v11 13/19] serial: amba-pl011: Use container_of() to get uart_amba_port Daniel Thompson
2014-09-02 13:00 ` [PATCH v11 14/19] serial: amba-pl011: Move pl011_hwinit() Daniel Thompson
2014-09-02 13:00 ` [PATCH v11 15/19] serial: amba-pl011: Pass FIQ information to KGDB Daniel Thompson
2014-09-02 13:00 ` [PATCH v11 16/19] serial: asc: Add support for KGDB's FIQ/NMI mode Daniel Thompson
2014-09-02 13:00 ` [PATCH v11 17/19] serial: asc: Adopt readl_/writel_relaxed() Daniel Thompson
2014-09-02 13:42 ` [STLinux Kernel] " Peter Griffin
2014-09-02 13:55 ` Maxime Coquelin
2014-09-02 13:00 ` [PATCH v11 18/19] serial: imx: clean up imx_poll_get_char() Daniel Thompson
2014-09-02 13:00 ` [PATCH v11 19/19] serial: imx: Add support for KGDB's FIQ/NMI mode Daniel Thompson
2014-09-02 23:02 ` [PATCH v11 00/19] arm: KGDB NMI/FIQ support Thomas Gleixner
2014-09-03 9:02 ` Daniel Thompson
2014-09-03 10:06 ` Thomas Gleixner
2014-09-03 10:30 ` Daniel Thompson
2014-09-04 16:03 ` [PATCH v1 0/6] arm: Implement arch_trigger_all_cpu_backtrace Daniel Thompson
2014-09-04 16:03 ` [PATCH v1 1/6] arm: fiq: Replace default FIQ handler Daniel Thompson
2014-09-04 18:57 ` Nicolas Pitre
2014-09-05 9:03 ` Daniel Thompson
2014-09-05 18:04 ` Nicolas Pitre
2014-09-08 13:22 ` Daniel Thompson
2014-09-04 16:03 ` [PATCH v1 2/6] arm: smp: Introduce a non-maskable IPI Daniel Thompson
2014-09-04 16:03 ` [PATCH v1 3/6] arm64: Introduce dummy version of asm/fiq.h Daniel Thompson
2014-09-04 16:03 ` [PATCH v1 4/6] irqchip: gic: Add support for IPI FIQ Daniel Thompson
2014-09-04 16:03 ` [PATCH v1 5/6] irqchip: gic: Group 0 workaround Daniel Thompson
2014-09-04 16:03 ` [PATCH v1 6/6] arm: Implement arch_trigger_all_cpu_backtrace Daniel Thompson
2014-09-05 15:33 ` [PATCH v2 0/5] " Daniel Thompson
2014-09-05 15:33 ` [PATCH v2 1/5] ARM: remove unused do_unexp_fiq() function Daniel Thompson
2014-09-05 15:33 ` [PATCH v2 2/5] ARM: add basic support for on-demand backtrace of other CPUs Daniel Thompson
2014-09-05 15:33 ` [PATCH v2 3/5] arm: fiq: Replace default FIQ handler Daniel Thompson
2014-09-05 15:33 ` [PATCH v2 4/5] arm64: Introduce dummy version of asm/fiq.h Daniel Thompson
2014-09-05 16:50 ` Catalin Marinas
2014-09-08 11:03 ` Daniel Thompson
2014-09-05 15:33 ` [PATCH v2 5/5] irqchip: gic: Add support for IPI FIQ Daniel Thompson
2014-09-08 15:28 ` [PATCH v3 0/5] arm: Implement arch_trigger_all_cpu_backtrace Daniel Thompson
2014-09-08 15:28 ` [PATCH v3 1/5] ARM: remove unused do_unexp_fiq() function Daniel Thompson
2014-09-08 15:28 ` [PATCH v3 2/5] ARM: add basic support for on-demand backtrace of other CPUs Daniel Thompson
2014-09-08 15:28 ` [PATCH v3 3/5] arm: fiq: Replace default FIQ handler Daniel Thompson
2014-09-08 15:49 ` Nicolas Pitre
2014-09-08 15:57 ` Daniel Thompson
2014-09-08 15:28 ` [PATCH v3 4/5] arm64: Introduce dummy version of asm/fiq.h Daniel Thompson
2014-09-08 15:28 ` [PATCH v3 5/5] irqchip: gic: Add support for IPI FIQ Daniel Thompson
2014-09-08 16:23 ` Russell King - ARM Linux
2014-09-09 8:24 ` Daniel Thompson
2014-09-14 11:53 ` Daniel Thompson
2014-09-08 16:24 ` [PATCH v3 0/5] arm: Implement arch_trigger_all_cpu_backtrace Russell King - ARM Linux
2014-09-09 8:26 ` Daniel Thompson
2014-09-09 14:15 ` [PATCH v4 0/6] " Daniel Thompson
2014-09-09 14:15 ` [PATCH v4 1/6] ARM: remove unused do_unexp_fiq() function Daniel Thompson
2014-09-09 14:15 ` [PATCH v4 2/6] arm: fiq: Replace default FIQ handler Daniel Thompson
2014-09-09 14:15 ` [PATCH v4 3/6] arm64: Introduce dummy version of asm/fiq.h Daniel Thompson
2014-09-09 14:15 ` [PATCH v4 4/6] irqchip: gic: Add support for IPI FIQ Daniel Thompson
2014-09-09 14:15 ` [PATCH v4 5/6] ARM: add basic support for on-demand backtrace of other CPUs Daniel Thompson
2014-09-09 14:15 ` [PATCH v4 6/6] arm: smp: Handle ipi_cpu_backtrace() using FIQ (if available) Daniel Thompson
2014-09-11 11:31 ` Daniel Thompson [this message]
2014-09-11 11:31 ` [PATCH 3.17-rc4 v5 1/6] ARM: remove unused do_unexp_fiq() function Daniel Thompson
2014-09-11 11:31 ` [PATCH 3.17-rc4 v5 2/6] arm: fiq: Replace default FIQ handler Daniel Thompson
2014-09-12 17:03 ` Russell King - ARM Linux
2014-09-12 17:07 ` Russell King - ARM Linux
2014-09-13 12:01 ` Daniel Thompson
2014-09-12 17:08 ` Russell King - ARM Linux
2014-09-12 17:14 ` Russell King - ARM Linux
2014-09-12 17:19 ` Russell King - ARM Linux
2014-09-12 17:23 ` Russell King - ARM Linux
2014-09-14 6:36 ` Daniel Thompson
2014-09-14 8:45 ` Russell King - ARM Linux
2014-09-14 11:27 ` Daniel Thompson
2014-09-13 12:03 ` Daniel Thompson
2014-09-11 11:31 ` [PATCH 3.17-rc4 v5 3/6] arm64: Introduce dummy version of asm/fiq.h Daniel Thompson
2014-09-11 11:31 ` [PATCH 3.17-rc4 v5 4/6] irqchip: gic: Add support for IPI FIQ Daniel Thompson
2014-09-11 11:31 ` [PATCH 3.17-rc4 v5 5/6] ARM: add basic support for on-demand backtrace of other CPUs Daniel Thompson
2014-09-11 11:31 ` [PATCH 3.17-rc4 v5 6/6] arm: smp: Handle ipi_cpu_backtrace() using FIQ (if available) Daniel Thompson
2014-08-18 14:12 ` [PATCH v9 06/16] irqchip: gic: Provide support for interrupt grouping Daniel Thompson
2014-08-18 14:12 ` [PATCH v9 07/16] irqchip: gic: Add support for FIQ management Daniel Thompson
2014-08-18 14:12 ` [PATCH v9 08/16] irqchip: gic: Remove spin locks from eoi_irq Daniel Thompson
2014-08-18 14:12 ` [PATCH v9 09/16] irqchip: gic: Add support for IPI FIQ Daniel Thompson
2014-08-18 14:12 ` [PATCH v9 10/16] irqchip: gic: Group 0 workaround Daniel Thompson
2014-08-18 14:12 ` [PATCH v9 11/16] irqchip: vic: Add support for FIQ management Daniel Thompson
2014-08-18 14:28 ` [PATCH v9 12/16] serial: amba-pl011: Pass FIQ information to KGDB Daniel Thompson
2014-08-18 18:30 ` Peter Hurley
2014-08-19 9:08 ` Daniel Thompson
2014-08-19 11:58 ` Peter Hurley
2014-08-19 12:51 ` Daniel Thompson
2014-08-18 14:28 ` [PATCH v9 13/16] serial: asc: Add support for KGDB's FIQ/NMI mode Daniel Thompson
2014-08-18 14:28 ` [PATCH v9 14/16] serial: asc: Adopt readl_/writel_relaxed() Daniel Thompson
2014-08-18 14:28 ` [PATCH v9 15/16] serial: imx: clean up imx_poll_get_char() Daniel Thompson
2014-08-18 14:28 ` [PATCH v9 16/16] serial: imx: Add support for KGDB's FIQ/NMI mode Daniel Thompson
2014-08-18 17:32 ` Dirk Behme
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