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Commit 8209e054 authored by Thomas Renninger's avatar Thomas Renninger Committed by Len Brown
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tools: turbostat: fix bitwise and operand 



bug could cause false positive on indicating
presence of invarient TSC or APERF support.

Signed-off-by: default avatarThomas Renninger <trenn@suse.de>
Signed-off-by: default avatarLen Brown <len.brown@intel.com>
parent 6148a47a

tools/power/x86/turbostat/turbostat.c

+2 −2
Original line number Diff line number Diff line
@@ -892,7 +892,7 @@ void check_cpuid() 
	 * this check is valid for both Intel and AMD

	 */

	asm("cpuid" : "=a" (eax), "=b" (ebx), "=c" (ecx), "=d" (edx) : "a" (0x80000007));

	has_invariant_tsc = edx && (1 << 8);

	has_invariant_tsc = edx & (1 << 8);



	if (!has_invariant_tsc) {

		fprintf(stderr, "No invariant TSC\n");
@@ -905,7 +905,7 @@ void check_cpuid() 
	 */



	asm("cpuid" : "=a" (eax), "=b" (ebx), "=c" (ecx), "=d" (edx) : "a" (0x6));

	has_aperf = ecx && (1 << 0);

	has_aperf = ecx & (1 << 0);

	if (!has_aperf) {

		fprintf(stderr, "No APERF MSR\n");

		exit(1);