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| author | mav <mav@FreeBSD.org> | 2013-02-26 13:59:39 +0000 |
|---|---|---|
| committer | mav <mav@FreeBSD.org> | 2013-02-26 13:59:39 +0000 |
| commit | d9ff8818e59c14ea0e7fc65590570396d4fdec2a (patch) | |
| tree | eada01034cc6b569eb33762d18274c9e3b3bc3ca /sys/dev/hwpmc | |
| parent | 40f8a2948b0c4e6acc784c63eeb5a3ac8a7c573b (diff) | |
| download | FreeBSD-src-d9ff8818e59c14ea0e7fc65590570396d4fdec2a.zip FreeBSD-src-d9ff8818e59c14ea0e7fc65590570396d4fdec2a.tar.gz | |
Change the way how software PMC updates counters.
This at least fixes -n option of pmcstat.
Reviewed by: fabient
Diffstat (limited to 'sys/dev/hwpmc')
| -rw-r--r-- | sys/dev/hwpmc/hwpmc_soft.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/sys/dev/hwpmc/hwpmc_soft.c b/sys/dev/hwpmc/hwpmc_soft.c index dac3612..0ed2262 100644 --- a/sys/dev/hwpmc/hwpmc_soft.c +++ b/sys/dev/hwpmc/hwpmc_soft.c @@ -408,8 +408,11 @@ pmc_soft_intr(struct pmckern_soft *ks) } processed = 1; - pc->soft_values[ri]++; if (PMC_IS_SAMPLING_MODE(PMC_TO_MODE(pm))) { + if ((pc->soft_values[ri]--) <= 0) + pc->soft_values[ri] += pm->pm_sc.pm_reloadcount; + else + continue; user_mode = TRAPF_USERMODE(ks->pm_tf); error = pmc_process_interrupt(ks->pm_cpu, PMC_SR, pm, ks->pm_tf, user_mode); @@ -424,7 +427,8 @@ pmc_soft_intr(struct pmckern_soft *ks) */ curthread->td_flags |= TDF_ASTPENDING; } - } + } else + pc->soft_values[ri]++; } atomic_add_int(processed ? &pmc_stats.pm_intr_processed : |
