From: Lakshmi Sowjanya D <lakshmi.sowjanya.d@xxxxxxxxx> The convert_art_to_tsc() and convert_art_ns_to_tsc() interfaces are no longer required. This conversion is internally done in get_device_system_crosststamp() using convert_base_to_cs(). Signed-off-by: Lakshmi Sowjanya D <lakshmi.sowjanya.d@xxxxxxxxx> --- arch/x86/include/asm/tsc.h | 3 -- arch/x86/kernel/tsc.c | 61 -------------------------------------- 2 files changed, 64 deletions(-) diff --git a/arch/x86/include/asm/tsc.h b/arch/x86/include/asm/tsc.h index 594fce0ca744..5e36495cc821 100644 --- a/arch/x86/include/asm/tsc.h +++ b/arch/x86/include/asm/tsc.h @@ -27,9 +27,6 @@ static inline cycles_t get_cycles(void) } #define get_cycles get_cycles -extern struct system_counterval_t convert_art_to_tsc(u64 art); -extern struct system_counterval_t convert_art_ns_to_tsc(u64 art_ns); - extern void tsc_early_init(void); extern void tsc_init(void); extern void mark_tsc_unstable(char *reason); diff --git a/arch/x86/kernel/tsc.c b/arch/x86/kernel/tsc.c index 035ae5bec2e8..706ef369e33c 100644 --- a/arch/x86/kernel/tsc.c +++ b/arch/x86/kernel/tsc.c @@ -1298,67 +1298,6 @@ int unsynchronized_tsc(void) return 0; } -/* - * Convert ART to TSC given numerator/denominator found in detect_art() - */ -struct system_counterval_t convert_art_to_tsc(u64 art) -{ - u64 tmp, res, rem; - - rem = do_div(art, art_base_clk.denominator); - - res = art * art_base_clk.numerator; - tmp = rem * art_base_clk.numerator; - - do_div(tmp, art_base_clk.denominator); - res += tmp + art_base_clk.offset; - - return (struct system_counterval_t) { - .cs_id = have_art ? CSID_X86_TSC : CSID_GENERIC, - .cycles = res - }; -} -EXPORT_SYMBOL(convert_art_to_tsc); - -/** - * convert_art_ns_to_tsc() - Convert ART in nanoseconds to TSC. - * @art_ns: ART (Always Running Timer) in unit of nanoseconds - * - * PTM requires all timestamps to be in units of nanoseconds. When user - * software requests a cross-timestamp, this function converts system timestamp - * to TSC. - * - * This is valid when CPU feature flag X86_FEATURE_TSC_KNOWN_FREQ is set - * indicating the tsc_khz is derived from CPUID[15H]. Drivers should check - * that this flag is set before conversion to TSC is attempted. - * - * Return: - * struct system_counterval_t - system counter value with the ID of the - * corresponding clocksource - * @cycles: System counter value - * @cs_id: Clocksource ID corresponding to system counter value. - * Used by timekeeping code to verify comparability of two - * cycle values. - */ - -struct system_counterval_t convert_art_ns_to_tsc(u64 art_ns) -{ - u64 tmp, res, rem; - - rem = do_div(art_ns, USEC_PER_SEC); - - res = art_ns * tsc_khz; - tmp = rem * tsc_khz; - - do_div(tmp, USEC_PER_SEC); - res += tmp; - return (struct system_counterval_t) { - .cs_id = have_art ? CSID_X86_TSC : CSID_GENERIC, - .cycles = res - }; -} -EXPORT_SYMBOL(convert_art_ns_to_tsc); - static void tsc_refine_calibration_work(struct work_struct *work); static DECLARE_DELAYED_WORK(tsc_irqwork, tsc_refine_calibration_work); /** -- 2.35.3