diff options
Diffstat (limited to 'target/linux/generic')
3 files changed, 111 insertions, 33 deletions
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 new file mode 100644 index 0000000000..1990e87055 --- /dev/null +++ b/target/linux/generic/pending-4.14/103-MIPS-perf-ath79-Fix-perfcount-IRQ-assignment.patch @@ -0,0 +1,110 @@ +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); diff --git a/target/linux/generic/pending-4.14/120-Fix-alloc_node_mem_map-with-ARCH_PFN_OFFSET-calcu.patch b/target/linux/generic/pending-4.14/120-Fix-alloc_node_mem_map-with-ARCH_PFN_OFFSET-calcu.patch index 61ececbc89..3308b1d71f 100644 --- a/target/linux/generic/pending-4.14/120-Fix-alloc_node_mem_map-with-ARCH_PFN_OFFSET-calcu.patch +++ b/target/linux/generic/pending-4.14/120-Fix-alloc_node_mem_map-with-ARCH_PFN_OFFSET-calcu.patch @@ -71,7 +71,7 @@ Signed-off-by: Tobias Wolf <dev-NTEO@vplace.de> --- a/mm/page_alloc.c +++ b/mm/page_alloc.c -@@ -6143,7 +6143,7 @@ static void __ref alloc_node_mem_map(str +@@ -6145,7 +6145,7 @@ static void __ref alloc_node_mem_map(str mem_map = NODE_DATA(0)->node_mem_map; #if defined(CONFIG_HAVE_MEMBLOCK_NODE_MAP) || defined(CONFIG_FLATMEM) if (page_to_pfn(mem_map) != pgdat->node_start_pfn) diff --git a/target/linux/generic/pending-4.14/220-optimize_inlining.patch b/target/linux/generic/pending-4.14/220-optimize_inlining.patch index cdf8bac323..12b875848e 100644 --- a/target/linux/generic/pending-4.14/220-optimize_inlining.patch +++ b/target/linux/generic/pending-4.14/220-optimize_inlining.patch @@ -1,13 +1,3 @@ ---- a/arch/arm/include/asm/hardirq.h -+++ b/arch/arm/include/asm/hardirq.h -@@ -6,6 +6,7 @@ - #include <linux/threads.h> - #include <asm/irq.h> - -+/* number of IPIS _not_ including IPI_CPU_BACKTRACE */ - #define NR_IPI 7 - - typedef struct { --- a/arch/arm/kernel/atags.h +++ b/arch/arm/kernel/atags.h @@ -5,7 +5,7 @@ void convert_to_tag_list(struct tag *tag @@ -19,28 +9,6 @@ setup_machine_tags(phys_addr_t __atags_pointer, unsigned int machine_nr) { early_print("no ATAGS support: can't continue\n"); ---- a/arch/arm/kernel/smp.c -+++ b/arch/arm/kernel/smp.c -@@ -76,6 +76,10 @@ enum ipi_msg_type { - IPI_CPU_STOP, - IPI_IRQ_WORK, - IPI_COMPLETION, -+ /* -+ * CPU_BACKTRACE is special and not included in NR_IPI -+ * or tracable with trace_ipi_* -+ */ - IPI_CPU_BACKTRACE, - /* - * SGI8-15 can be reserved by secure firmware, and thus may -@@ -801,7 +805,7 @@ core_initcall(register_cpufreq_notifier) - - static void raise_nmi(cpumask_t *mask) - { -- smp_cross_call(mask, IPI_CPU_BACKTRACE); -+ __smp_cross_call(mask, IPI_CPU_BACKTRACE); - } - - void arch_trigger_cpumask_backtrace(const cpumask_t *mask, bool exclude_self) --- a/arch/arm64/include/asm/cpufeature.h +++ b/arch/arm64/include/asm/cpufeature.h @@ -125,7 +125,7 @@ static inline bool cpu_have_feature(unsi |