• Mark Rutland's avatar
    arm: perf: clean up PMU names · 3d1ff755
    Mark Rutland authored
    The perf userspace tools can't handle dashes or spaces in PMU names,
    which conflicts with the current naming scheme in the arm perf backend.
    This prevents these PMUs from being accessed by name from the perf
    tools. Additionally the ARMv6 pmus are named "v6", which does not fully
    distinguish them in the sys/bus/event_source namespace.
    
    This patch renames the PMUs consistently to a lower case form with
    underscores, e.g. "armv6_1176", "armv7_cortex_a9". This is both readily
    accepted by today's perf tool, and far easier to type than the
    (apparently unused) convention in use previously. The OProfile name
    conversion code is updated to handle this.
    
    Due to a copy-paste error involving two "xscale1" entries, "xscale2" has
    never been matched by the name OProfile name mapping. While we're
    updating names, this is corrected.
    Acked-by: default avatarWill Deacon <will.deacon@arm.com>
    Tested-by: default avatarChristopher Covington <cov@codeaurora.org>
    Signed-off-by: default avatarMark Rutland <mark.rutland@arm.com>
    [sachin: fixed missing semicolons in armv6 backend]
    Signed-off-by: default avatarSachin Kamat <sachin.kamat@samsung.com>
    Signed-off-by: default avatarWill Deacon <will.deacon@arm.com>
    3d1ff755
perf_event_v6.c 17.6 KB