kernel/arch/powerpc/include/asm/perf_event_fsl_emb.h, branch linux-6.2.y

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152

2019-05-30T18:26:32Z

Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner Reviewed-by: Allison Randal Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman

powerpc/perf: increase the perf HW events to 6

2013-08-07T23:38:03Z

This change is required after the e6500 perf support has been added. There are 6 counters in e6500 core instead of 4 in e500 core and the MAX_HWEVENTS counter should be changed accordingly from 4 to 6. Added also runtime check for counters overflow. Signed-off-by: Catalin Udma Signed-off-by: Lijun Pan Signed-off-by: Scott Wood

powerpc/perf: e500 support

2010-03-05T09:04:08Z

This implements perf_event support for the Freescale embedded performance monitor, based on the existing perf_event.c that supports server/classic chips. Some limitations: - Performance monitor interrupts are regular EE interrupts, and thus you can't profile places with interrupts disabled. We may want to implement soft IRQ-disabling, with perfmon interrupts exempted and treated as NMIs. - When trying to schedule multiple event groups at once, and using restricted events, situations could arise where scheduling fails even though it would be possible. Consider three groups, each with two events. One group has restricted events, the others don't. The two non-restricted groups are scheduled, then one is removed, which happens to occupy the two counters that can't do restricted events. The remaining non-restricted group will not be moved to the non-restricted-capable counters to make room if the restricted group tries to be scheduled. Signed-off-by: Scott Wood Acked-by: Paul Mackerras Signed-off-by: Kumar Gala