projects / GitHub / mt8127 / android_kernel_alcatel_ttab.git / blame
| Commit | Line | Data |
|---|---|---|
| b920de1b DH |
1 | /* MN10300 Profiling setup |
| 2 | * | |
| 3 | * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved. | |
| 4 | * Written by David Howells (dhowells@redhat.com) | |
| 5 | * | |
| 6 | * This program is free software; you can redistribute it and/or | |
| 7 | * modify it under the terms of the GNU General Public Licence | |
| 8 | * as published by the Free Software Foundation; either version | |
| 9 | * 2 of the Licence, or (at your option) any later version. | |
| 10 | */ | |
| 11 | ||
| 12 | /* | |
| 13 | * initialise the profiling if enabled | |
| 14 | * - using with gdbstub will give anomalous results | |
| 15 | * - can't be used with gdbstub if running at IRQ priority 0 | |
| 16 | */ | |
| 17 | static __init int profile_init(void) | |
| 18 | { | |
| 19 | u16 tmp; | |
| 20 | ||
| 21 | if (!prof_buffer) | |
| 22 | return 0; | |
| 23 | ||
| 24 | /* use timer 11 to drive the profiling interrupts */ | |
| 25 | set_intr_stub(EXCEP_IRQ_LEVEL0, profile_handler); | |
| 26 | ||
| 27 | /* set IRQ priority at which to run */ | |
| 28 | set_intr_level(TM11IRQ, GxICR_LEVEL_0); | |
| 29 | ||
| 30 | /* set up timer 11 | |
| 31 | * - source: (IOCLK 33MHz)*2 = 66MHz | |
| 32 | * - frequency: (33330000*2) / 8 / 20625 = 202Hz | |
| 33 | */ | |
| 34 | TM11BR = 20625 - 1; | |
| 35 | TM11MD = TM8MD_SRC_IOCLK_8; | |
| 36 | TM11MD |= TM8MD_INIT_COUNTER; | |
| 37 | TM11MD &= ~TM8MD_INIT_COUNTER; | |
| 38 | TM11MD |= TM8MD_COUNT_ENABLE; | |
| 39 | ||
| 40 | TM11ICR |= GxICR_ENABLE; | |
| 41 | tmp = TM11ICR; | |
| 42 | ||
| 43 | printk(KERN_INFO "Profiling initiated on timer 11, priority 0, %uHz\n", | |
| 368dd5ac | 44 | MN10300_IOCLK / 8 / (TM11BR + 1)); |
| b920de1b DH |
45 | printk(KERN_INFO "Profile histogram stored %p-%p\n", |
| 46 | prof_buffer, (u8 *)(prof_buffer + prof_len) - 1); | |
| 47 | ||
| 48 | return 0; | |
| 49 | } | |
| 50 | ||
| 51 | __initcall(profile_init); |