Author: andrew Date: Wed Sep 21 09:45:14 2016 New Revision: 306085 URL: https://svnweb.freebsd.org/changeset/base/306085
Log: MFC 305285: Add a pc_clock pcpu field and use it to implement cpu_est_clockrate. This will allow drivers that manage the clock frequency to communicate this with the reset of the kernel. Sponsored by: ABT Systems Ltd Modified: stable/11/sys/arm64/arm64/machdep.c stable/11/sys/arm64/include/pcpu.h Directory Properties: stable/11/ (props changed) Modified: stable/11/sys/arm64/arm64/machdep.c ============================================================================== --- stable/11/sys/arm64/arm64/machdep.c Wed Sep 21 09:06:06 2016 (r306084) +++ stable/11/sys/arm64/arm64/machdep.c Wed Sep 21 09:45:14 2016 (r306085) @@ -407,8 +407,17 @@ cpu_flush_dcache(void *ptr, size_t len) int cpu_est_clockrate(int cpu_id, uint64_t *rate) { + struct pcpu *pc; - panic("ARM64TODO: cpu_est_clockrate"); + pc = pcpu_find(cpu_id); + if (pc == NULL || rate == NULL) + return (EINVAL); + + if (pc->pc_clock == 0) + return (EOPNOTSUPP); + + *rate = pc->pc_clock; + return (0); } void Modified: stable/11/sys/arm64/include/pcpu.h ============================================================================== --- stable/11/sys/arm64/include/pcpu.h Wed Sep 21 09:06:06 2016 (r306084) +++ stable/11/sys/arm64/include/pcpu.h Wed Sep 21 09:45:14 2016 (r306085) @@ -38,7 +38,8 @@ #define PCPU_MD_FIELDS \ u_int pc_acpi_id; /* ACPI CPU id */ \ u_int pc_midr; /* stored MIDR value */ \ - char __pad[121] + uint64_t pc_clock; \ + char __pad[113] #ifdef _KERNEL _______________________________________________ svn-src-all@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"