/* * Analog Devices PPI header file * * Copyright (c) 2011 Analog Devices Inc. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #ifndef _PPI_H_ #define _PPI_H_ #include #include #include /* EPPI */ #ifdef EPPI_EN #define PORT_EN EPPI_EN #define PORT_DIR EPPI_DIR #define DMA32 0 #define PACK_EN PACKEN #endif /* EPPI3 */ #ifdef EPPI0_CTL2 #define PORT_EN EPPI_CTL_EN #define PORT_DIR EPPI_CTL_DIR #define PACK_EN EPPI_CTL_PACKEN #define DMA32 0 #define DLEN_8 EPPI_CTL_DLEN08 #define DLEN_16 EPPI_CTL_DLEN16 #endif struct ppi_if; struct ppi_params { u32 width; /* width in pixels */ u32 height; /* height in lines */ u32 hdelay; /* delay after the HSYNC in pixels */ u32 vdelay; /* delay after the VSYNC in lines */ u32 line; /* total pixels per line */ u32 frame; /* total lines per frame */ u32 hsync; /* HSYNC length in pixels */ u32 vsync; /* VSYNC length in lines */ int bpp; /* bits per pixel */ int dlen; /* data length for ppi in bits */ u32 ppi_control; /* ppi configuration */ u32 int_mask; /* interrupt mask */ }; struct ppi_ops { int (*attach_irq)(struct ppi_if *ppi, irq_handler_t handler); void (*detach_irq)(struct ppi_if *ppi); int (*start)(struct ppi_if *ppi); int (*stop)(struct ppi_if *ppi); int (*set_params)(struct ppi_if *ppi, struct ppi_params *params); void (*update_addr)(struct ppi_if *ppi, unsigned long addr); }; enum ppi_type { PPI_TYPE_PPI, PPI_TYPE_EPPI, PPI_TYPE_EPPI3, }; struct ppi_info { enum ppi_type type; int dma_ch; int irq_err; void __iomem *base; const unsigned short *pin_req; }; struct ppi_if { struct device *dev; unsigned long ppi_control; const struct ppi_ops *ops; const struct ppi_info *info; bool err_int; /* if we need request error interrupt */ bool err; /* if ppi has fifo error */ void *priv; }; struct ppi_if *ppi_create_instance(struct platform_device *pdev, const struct ppi_info *info); void ppi_delete_instance(struct ppi_if *ppi); #endif commit/?id=dd86e373e09fb16b83e8adf5c48c421a4ca76468'>root/tools/build/tests/ex/a.c
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authorThomas Gleixner <tglx@linutronix.de>2017-01-31 23:58:38 +0100
committerIngo Molnar <mingo@kernel.org>2017-02-01 08:37:27 +0100
commitdd86e373e09fb16b83e8adf5c48c421a4ca76468 (patch)
tree55703c2ea8584e303e342090614e0aab3509ab21 /tools/build/tests/ex/a.c
parent0b3589be9b98994ce3d5aeca52445d1f5627c4ba (diff)
perf/x86/intel/rapl: Make package handling more robust
The package management code in RAPL relies on package mapping being available before a CPU is started. This changed with: 9d85eb9119f4 ("x86/smpboot: Make logical package management more robust") because the ACPI/BIOS information turned out to be unreliable, but that left RAPL in broken state. This was not noticed because on a regular boot all CPUs are online before RAPL is initialized. A possible fix would be to reintroduce the mess which allocates a package data structure in CPU prepare and when it turns out to already exist in starting throw it away later in the CPU online callback. But that's a horrible hack and not required at all because RAPL becomes functional for perf only in the CPU online callback. That's correct because user space is not yet informed about the CPU being onlined, so nothing caan rely on RAPL being available on that particular CPU. Move the allocation to the CPU online callback and simplify the hotplug handling. At this point the package mapping is established and correct. This also adds a missing check for available package data in the event_init() function. Reported-by: Yasuaki Ishimatsu <yasu.isimatu@gmail.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sebastian Siewior <bigeasy@linutronix.de> Cc: Stephane Eranian <eranian@google.com> Cc: Vince Weaver <vincent.weaver@maine.edu> Fixes: 9d85eb9119f4 ("x86/smpboot: Make logical package management more robust") Link: http://lkml.kernel.org/r/20170131230141.212593966@linutronix.de Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'tools/build/tests/ex/a.c')