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path: root/arch/mips/vr41xx/common/pmu.c
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2018-06-29MIPS: Annotate cpu_wait implementations with __cpuidlePaul Burton1-1/+2
Annotate cpu_wait implementations using the __cpuidle macro which places these functions in the .cpuidle.text section. This allows cpu_in_idle() to return true for PC values which fall within these functions, allowing nmi_backtrace() to produce cleaner output for CPUs running idle functions. For example: # echo l >/proc/sysrq-trigger [ 38.587170] sysrq: SysRq : Show backtrace of all active CPUs [ 38.593657] NMI backtrace for cpu 1 [ 38.597611] CPU: 1 PID: 161 Comm: sh Not tainted 4.18.0-rc1+ #27 [ 38.604306] Stack : 00000000 00000004 00000006 80486724 00000000 00000000 00000000 00000000 [ 38.613647] 80e17eda 00000034 00000000 00000000 80d20000 80b67e98 8e559c90 0ffe1e88 [ 38.622986] 00000000 00000000 80e70000 00000000 8f61db18 38312e34 722d302e 202b3163 [ 38.632324] 8e559d3c 8e559adc 00000001 6b636162 80d20000 80000000 00000000 80d1cfa4 [ 38.641664] 00000001 80d20000 80d19520 00000000 00000003 80836724 00000004 80e10004 [ 38.650993] ... [ 38.653724] Call Trace: [ 38.656499] [<8040cdd0>] show_stack+0xa0/0x144 [ 38.661475] [<80b67e98>] dump_stack+0xe8/0x120 [ 38.666455] [<80b6f6d4>] nmi_cpu_backtrace+0x1b4/0x1cc [ 38.672189] [<80b6f81c>] nmi_trigger_cpumask_backtrace+0x130/0x1e4 [ 38.679081] [<808295d8>] __handle_sysrq+0xc0/0x180 [ 38.684421] [<80829b84>] write_sysrq_trigger+0x50/0x64 [ 38.690176] [<8061c984>] proc_reg_write+0xd0/0xfc [ 38.695447] [<805aac1c>] __vfs_write+0x54/0x194 [ 38.700500] [<805aaf24>] vfs_write+0xe0/0x18c [ 38.705360] [<805ab190>] ksys_write+0x7c/0xf0 [ 38.710238] [<80416018>] syscall_common+0x34/0x58 [ 38.715558] Sending NMI from CPU 1 to CPUs 0,2-3: [ 38.720916] NMI backtrace for cpu 0 skipped: idling at r4k_wait_irqoff+0x2c/0x34 [ 38.729186] NMI backtrace for cpu 3 skipped: idling at r4k_wait_irqoff+0x2c/0x34 [ 38.737449] NMI backtrace for cpu 2 skipped: idling at r4k_wait_irqoff+0x2c/0x34 Without this we get register value & backtrace output from all CPUs, which is generally useless for those running the idle function & serves only to overwhelm & obfuscate the meaningful output from non-idle CPUs. Signed-off-by: Paul Burton <paul.burton@mips.com> Cc: James Hogan <jhogan@kernel.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Huacai Chen <chenhc@lemote.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/19598/
2016-05-13MIPS: VR41xx: Use __flush_cache_all instead of flush_cache_all.Ralf Baechle1-1/+1
It's probably a good idea to flush caches before reset and by the time this code was written flush_cache_all did actually still do something. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-05-22MIPS: Idle: Consolidate all declarations in <asm/idle.h>.Ralf Baechle1-0/+1
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-02-01MIPS: Whitespace cleanup.Ralf Baechle1-1/+1
Having received another series of whitespace patches I decided to do this once and for all rather than dealing with this kind of patches trickling in forever. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2012-03-28Disintegrate asm/system.h for MIPSDavid Howells1-1/+0
Disintegrate asm/system.h for MIPS. Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Ralf Baechle <ralf@linux-mips.org> cc: linux-mips@linux-mips.org
2009-07-03Update Yoichi Yuasa's e-mail addressYoichi Yuasa1-1/+1
Signed-off-by: Yoichi Yuasa <yuasa@linux-mips.org> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-10-12[MIPS] Allow hardwiring of the CPU type to a single type for optimization.Ralf Baechle1-2/+2
This saves a few k on systems which only ever ship with a single CPU type. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-10-12[MIPS] VR41xx: replace infinite loop with hibernateYoichi Yuasa1-9/+2
Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-10-12[MIPS] VR41xx: Add default restart routine.Yoichi Yuasa1-1/+6
Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-10-12[MIPS] vr41xx: add cpu_waitYoichi Yuasa1-2/+16
Add cpu_wait for NEC VR41xx Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-02-07[MIPS] Rename _machine_power_off to pm_power_off so the kernel builds again.Ralf Baechle1-1/+2
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-01-10Update Yoichi Yuasa's email address.Ralf Baechle1-1/+1
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-05-17[PATCH] mips: add resource management to pmuYoichi Yuasa1-7/+48
This patch had added resource management to vr41xx's pmu. Signed-off-by: Yoichi Yuasa <yuasa@hh.iij4u.or.jp> Cc: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-04-17Linux-2.6.12-rc2v2.6.12-rc2Linus Torvalds1-0/+81
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
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