kernel: remove support for kernel 4.14

[openwrt/staging/dedeckeh.git] / target / linux / generic / pending-4.14 / 103-MIPS-perf-ath79-Fix-perfcount-IRQ-assignment.patch

diff --git a/target/linux/generic/pending-4.14/103-MIPS-perf-ath79-Fix-perfcount-IRQ-assignment.patch b/target/linux/generic/pending-4.14/103-MIPS-perf-ath79-Fix-perfcount-IRQ-assignment.patch
deleted file mode 100644 (file)
index 1990e87..0000000
--- a/target/linux/generic/pending-4.14/103-MIPS-perf-ath79-Fix-perfcount-IRQ-assignment.patch
+++ /dev/null
@@ -1,110 +0,0 @@
-From 852a88f35f4b7e5ebb717fed3c3a3330d5ad4336 Mon Sep 17 00:00:00 2001
-From: =?UTF-8?q?Petr=20=C5=A0tetiar?= <ynezz@true.cz>
-Date: Wed, 10 Apr 2019 16:43:27 +0200
-Subject: [PATCH v2] MIPS: perf: ath79: Fix perfcount IRQ assignment
-MIME-Version: 1.0
-Content-Type: text/plain; charset=UTF-8
-Content-Transfer-Encoding: 8bit
-
-Currently it's not possible to use perf on ath79 due to genirq flags
-mismatch happening on static virtual IRQ 13 which is used for
-performance counters hardware IRQ 5.
-
-On TP-Link Archer C7v5:
-
-           CPU0
-  2:          0      MIPS   2  ath9k
-  4:        318      MIPS   4  19000000.eth
-  7:      55034      MIPS   7  timer
-  8:       1236      MISC   3  ttyS0
- 12:          0      INTC   1  ehci_hcd:usb1
- 13:          0  gpio-ath79   2  keys
- 14:          0  gpio-ath79   5  keys
- 15:         31  AR724X PCI    1  ath10k_pci
-
- $ perf top
- genirq: Flags mismatch irq 13. 00014c83 (mips_perf_pmu) vs. 00002003 (keys)
-
-On TP-Link Archer C7v4:
-
-         CPU0
-  4:          0      MIPS   4  19000000.eth
-  5:       7135      MIPS   5  1a000000.eth
-  7:      98379      MIPS   7  timer
-  8:         30      MISC   3  ttyS0
- 12:      90028      INTC   0  ath9k
- 13:       5520      INTC   1  ehci_hcd:usb1
- 14:       4623      INTC   2  ehci_hcd:usb2
- 15:      32844  AR724X PCI    1  ath10k_pci
- 16:          0  gpio-ath79  16  keys
- 23:          0  gpio-ath79  23  keys
-
- $ perf top
- genirq: Flags mismatch irq 13. 00014c80 (mips_perf_pmu) vs. 00000080 (ehci_hcd:usb1)
-
-This problem is happening, because currently statically assigned virtual
-IRQ 13 for performance counters is not claimed during the initialization
-of MIPS PMU during the bootup, so the IRQ subsystem doesn't know, that
-this interrupt isn't available for further use.
-
-So this patch fixes the issue by simply booking hardware IRQ 5 for MIPS PMU.
-
-Tested-by: Kevin 'ldir' Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
-Signed-off-by: Petr Štetiar <ynezz@true.cz>
----
-
-Changes since v1:
-
- I've incorporated two comments which I've received on IRC from blogic and
- I've also reworded the commit message to match the changes in v2 of this
- patch.
-
-  * use actual hardware perfcount IRQ 5 instead of the virtual IRQ 13
-  * dropped the CONFIG_PERF_EVENTS ifdef around irq_create_mapping
-
- arch/mips/ath79/setup.c          |  6 ------
- drivers/irqchip/irq-ath79-misc.c | 11 +++++++++++
- 2 files changed, 11 insertions(+), 6 deletions(-)
-
---- a/arch/mips/ath79/setup.c
-+++ b/arch/mips/ath79/setup.c
-@@ -183,12 +183,6 @@ const char *get_system_type(void)
-       return ath79_sys_type;
- }
- 
--int get_c0_perfcount_int(void)
--{
--      return ATH79_MISC_IRQ(5);
--}
--EXPORT_SYMBOL_GPL(get_c0_perfcount_int);
--
- unsigned int get_c0_compare_int(void)
- {
-       return CP0_LEGACY_COMPARE_IRQ;
---- a/drivers/irqchip/irq-ath79-misc.c
-+++ b/drivers/irqchip/irq-ath79-misc.c
-@@ -22,6 +22,15 @@
- #define AR71XX_RESET_REG_MISC_INT_ENABLE      4
- 
- #define ATH79_MISC_IRQ_COUNT                  32
-+#define ATH79_MISC_PERF_IRQ                   5
-+
-+static int ath79_perfcount_irq;
-+
-+int get_c0_perfcount_int(void)
-+{
-+      return ath79_perfcount_irq;
-+}
-+EXPORT_SYMBOL_GPL(get_c0_perfcount_int);
- 
- static void ath79_misc_irq_handler(struct irq_desc *desc)
- {
-@@ -113,6 +122,8 @@ static void __init ath79_misc_intc_domai
- {
-       void __iomem *base = domain->host_data;
- 
-+      ath79_perfcount_irq = irq_create_mapping(domain, ATH79_MISC_PERF_IRQ);
-+
-       /* Disable and clear all interrupts */
-       __raw_writel(0, base + AR71XX_RESET_REG_MISC_INT_ENABLE);
-       __raw_writel(0, base + AR71XX_RESET_REG_MISC_INT_STATUS);