Repository files (latest commit first)

Filename	Latest commit message	Latest commit date
Ingo Molnar 528871b456 perf/core: Fix impossible ring-buffer sizes warning ... The following commit: 9dff0aa95a ("perf/core: Don't WARN() for impossible ring-buffer sizes") results in perf recording failures with larger mmap areas: root@skl:/tmp# perf record -g -a failed to mmap with 12 (Cannot allocate memory) The root cause is that the following condition is buggy: if (order_base_2(size) >= MAX_ORDER) goto fail; The problem is that @size is in bytes and MAX_ORDER is in pages, so the right test is: if (order_base_2(size) >= PAGE_SHIFT+MAX_ORDER) goto fail; Fix it. Reported-by: "Jin, Yao" <[email protected]> Bisected-by: Borislav Petkov <[email protected]> Analyzed-by: Peter Zijlstra <[email protected]> Cc: Julien Thierry <[email protected]> Cc: Mark Rutland <[email protected]> Cc: Alexander Shishkin <[email protected]> Cc: Arnaldo Carvalho de Melo <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Linus Torvalds <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: Greg Kroah-Hartman <[email protected]> Cc: <[email protected]> Fixes: 9dff0aa95a ("perf/core: Don't WARN() for impossible ring-buffer sizes") Signed-off-by: Ingo Molnar <[email protected]>		2019-02-13 08:05:02 +01:00
..
callchain.c	treewide: convert ISO_8859-1 text comments to utf-8	2018-08-23 18:48:43 -07:00
core.c	perf/x86: Add check_period PMU callback	2019-02-11 11:46:43 +01:00
hw_breakpoint.c	perf: Fix typos in comments	2018-12-03 11:22:32 +01:00
internal.h	perf: Make perf_callchain function static	2018-01-08 12:33:01 -03:00
Makefile
ring_buffer.c	perf/core: Fix impossible ring-buffer sizes warning	2019-02-13 08:05:02 +01:00
uprobes.c	mm/mmu_notifier: use structure for invalidate_range_start/end calls v2	2018-12-28 12:11:50 -08:00